Bernard solved the equation 5x+(-4)=6x+4 using algebra tiles. Which explains why Bernard added 5 negative x-tiles to both sides in the first step of the solution?

A) He wanted to create zero pairs on the left side of the equation to get a positive coefficient of x on the right side.

B) He wanted to combine more negative tiles with the 4 negative tiles on the left side of the equation.

C) He wanted to remove the larger coefficient on the left side of the equation.

D) He wanted to have 10 x-tiles on the left side of the equation.

Answers

Answer 1
To find why he would do this, we need to understand what all the possible first steps are in this equation.

You could add 4 to both sides.
You could subtract 4 from both sides.
You could subtract 5x from both sides.
You could subtract 6x from both sides.

Any of these work. In Bernard's case, he added 5 negative x tiles, meaning he subtracted. C and D already make no sense, but allow me to further explain. By him subtracting 5x from both sides, the equation turns into:

-4 = x + 4

By this point, he can just subtract 4 from both sides to find the value of x. But the question asks for why he did the first step. Therefore, it would be A.
Answer 2

Answer:

a

Step-by-step explanation:

if dont want to read


Related Questions

Eric is hanging a rectangle mirror that has a diagonal of 47 inches with an angle of depression of 60°. How many square inches is the mirror?

Answers

check the picture below.

make sure your calculator is in Degree mode.

the mirror is x*y square inches.

Answer:

A) 956.5 in^2

Step-by-step explanation:

took the test

10 ​An important aspect of ____________ is assigning people to various tasks and jobs?

Answers

Could you add the answer choices? It would be much easier to help you xD Thanks!!

A squirrel is traveling at a rate of 12 miles per hour. Write the rate in miles per minute.

Answers

1 hour = 60 minutes

12/60 = 0.2 miles per minute

Which is a correct expansion of (2x+3)(2x^2-5)
A. 2x•2x^2+2x•(-5)+3•2x+3•(-5)
B. 2x•2x^2+2x•(-5)+3•2x^2+3•(-5)
C. 2x•2x^2+3•2x^2+2x^2•(-5)+3•(-5)

Answers

Use distributive property.

2x * 2x^2
2x * -5
3 * 2x^2
3 * -5

2x * 2x^2 + 2x * -5 + 3 * 2x^2 + 3 * -5
Hope this helps!

Answer: B

2X.2X^2+2X.(-5)+3.2X^2+3.(-5)

Step-by-step explanation:

(2X+3) (2X^2-5)

Cross multiply (2X+3) by (2X^2-5)

2X*2X^2+

2X*(-5)+

3*2X^2+

3*(-5)

= 2X*2X^2+2X*(-5)+3*2X^2+3*(-5)

If you came home from a trip with 150 south african rand, 350 kuwaiti dinars and 200 japanese yen, how much would you have in u.s. dollars?

Answers

We know that:

1 south African rand = 0.075 usd

1 kuwaiti dinar = 3.31 usd

1 japanese yen = 0.0089 usd

 

Therefore the total money in usd is:

total usd = 150 rand * (0.075 usd / 1 rand) + 350 dinar * (3.31 usd / 1 dinar) + 200 yen * (0.0089 usd / 1 yen)

total usd = 1,171.53 us dollars 

The square root of a number is between 7 and 8. which could be the number? a 72 c 51 b 83 d 66

Answers

Answer:

51

Step-by-step explanation:

The number could be 51 if the square root of a number is between 7 and 8 option (c) 51 is correct.

What is inequality?

It is defined as the expression in mathematics in which both sides are not equal they have mathematical signs either less than or greater than known as inequality.

It is given that:

The square root of a number is between 7 and 8.

Let the number is x:

The square root of the number will be √x

7 < √x < 8

Squaring both sides:

49 < x < 64

The number will lie between 49 and 64

From the option, the number 51 lies between 49 and 64.

Thus, the number could be 51 if the square root of a number is between 7 and 8 option (c) 51 is correct.

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Calculate the speed of a dog running through a yard covering 24m in 52s

Answers

The speed of the dog is 4.8m/s

Data;

Distance = 24mTime = 52 seconds

Speed

This is calculated as the ratio between the distance covered to the time taken.

The formula is given as

[tex]speed = \frac{distance }{time taken}[/tex]

Let's plug in our values and solve

[tex]speed = \frac{24}{5}\\ speed = 4.8m/s[/tex]

The speed of the dog is 4.8m/s

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Final answer:

To find the speed of a dog that covers 24 meters in 52 seconds, divide the distance by the time to get an average speed of approximately 0.4615 meters per second (m/s).

Explanation:

To calculate the speed of a dog running through a yard that covers a distance of 24 meters in 52 seconds, you would use the formula for speed, which is:

Speed = Distance ÷ Time

In this case, the dog covers a distance (Distance) of 24 meters in a time (Time) of 52 seconds. Substituting these values into the formula we get:

Speed = 24 m ÷ 52 s

Now, we perform the division to find the speed:

Speed = 0.4615 meters per second (m/s)

Therefore, the dog is running at an average speed of approximately 0.4615 m/s.

Given the statement "If Jack’s pet is a pig, then Jack’s pet cannot fly,” which statement represents the converse?

q → p, where p = Jack’s pet is a pig and q = Jack’s pet cannot fly~q → ~p, where p = Jack’s pet cannot fly and q = Jack’s pet is a pig p → q, where p = Jack’s pet is a pig and q = Jack’s pet cannot flyq → p, where p = Jack’s pet is not a pig and q = Jack’s pet is a pig

Answers

the answer is A just had the practice quiz

Converse statement of "If Jack’s pet is a pig, then Jack’s pet cannot fly,” is given by " q → p, where p = Jack’s pet is a pig and q = Jack’s pet cannot fly."

What is converse statement?

" Converse statement is defined as when the hypothesis and conclusion of a statement interchange or reversed."

According to the question,

Given,

p → q

Hypothesis of a statement 'p': If Jack’s pet is a pig

Conclusion of a statement 'q' : then Jack’s pet cannot fly

Converse of a statement is given by reversing hypothesis and conclusion we get,

q → p

Hypothesis of a statement 'q' : If Jack’s pet cannot fly

Conclusion of a statement  'p': then Jack’s pet is a pig

Hence, converse statement is given by  q → p, where p = Jack’s pet is a pig and q = Jack’s pet cannot fly.

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A stock market analyst observes the following for the price of two stocks that he owns, one of which is increasing at an exponential rate (geometric) and the other is increasing in a linear fashion (arithmetic).

Stock A: Equation: an = 15n + 130, where an is the value of the stock and n is the number of years.


Year Price
1 $145.00
2 $160.00
3 $175.00
4 $190.00
5 $205.00


Stock B: Equation: an = 36(1.09)n − 1, where an is the value of the stock and n is the number of years.

Year Price
1 $36.00
2 $39.24
3 $42.77
4 $46.61
5 $50.82


Assuming these stock values continue to increase in the same manner until retirement, which stock option is worth more in 50 years and how much more is this stock worth per share?


OPTIONS:
A) Stock B is worth more in 50 years, $1,575.84 more per share
B) Stock A is worth more in 50 years, $1,364.08 more per share
C) Stock B is worth more in 50 years, $1,796.87 more per share
D) Stock A is worth more in 50 years, $880.00 more per share

Answers

in 50 years  stock A realises 15*50 + 130  = $880

in 50 yeras stock B  gives  50(1.09)^50 = $2676.87

2676.87 - 880 = $ 1796.87 / share

Its C
Final answer:

Stock B is worth more in 50 years, $1,575.84 more per share.

Explanation:

To determine which stock option is worth more in 50 years, we need to find the value of each stock after 50 years.

For Stock A, we have the equation: an = 15n + 130. Plugging in n = 50, we get a50 = 15(50) + 130 = $880.

For Stock B, we have the equation: an = 36(1.09)n - 1, where n is the number of years. Plugging in n = 50, we get a50 = 36(1.09)^50 - 1 = $2,455.84.

Therefore, Stock B is worth more in 50 years, $1,575.84 more per share.

One teaspoon equals 0.5 centiliters. How many liters equal 50 teaspoons? Round the answer to the nearest hundredth.

Answers

.5/100 = 0.005
0.005*50 =.25 liters
50 teaspoons = 0.246446 liters
0.246446 rounded to the nearest hundredth is 0.25

so your answer is 0.25

In the figure, the measure of angle 6 is 141°. What is the measure of angle 5?







Answers

I THINK THAT THE ANSWER IS 39 BECAUSE ALL TRIANGELS EQUAL 180 DEGREES

Answer:

39 degrees

Step-by-step explanation:

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Given that 56 square equals 3,136 find the square of112

Answers

112  = 56 x 2 

so  56 square = 3136

112 squared = 56 squared x 2 squared = 3136 x 4 =12544

Si vendo los 7/4 de lo que no vendí, ¿que parte del total no vendí?

Answers

The part of the total that is not sold is 1/4.

If you sell 7/4 of the lot, the part of the total that is not sold is 1 - 7/4 = 1/4.

Another way to think about it is that if you have 4 slices of pie and you sell 7 of them, you have 1 slice left. Therefore, 1/4 of the pie is not sold.

Suppose you have a lot that is 100 square meters in size. If you sell 7/4 of the lot, you will sell 7/4 * 100 square meters = 175 square meters. This means that you will have 100 square meters - 175 square meters = 25 square meters left.

Therefore, the part of the total that is not sold is 25 square meters / 100 square meters = 1/4.

In general, if you sell a fraction of a total, the part of the total that is not sold is 1 - (fraction sold).

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Jean has $20 and is going shopping to buy 3 scarves and as many pairs of earrings as possible. How many pairs of earrings can she buy if scarves cost $2.55 each and earrings cost $2.99 a pair? Jean can buy at least 4 pairs of earrings. Jean can buy more than 4 pairs of earrings. Jean can buy less than 4 pairs of earrings. Jean can buy at most 4 pairs of earrings.

Answers

If scarves cost $2.55 each, and she is buying three: 2.55(3)= $7.65
20 - 7.65= $12. 35
you have $12.35 left to buy earrings 
12.35 / 2.99= 4, Jean can only buy 4 pairs of earrings

PLEASE HELP ME ASAP !!!!!!

Answers

The answer is (a) hope it helps
63/10 = 6.3 or 6 3/10
6 4/5 = 6 8/10
31/5 = 6 1/5 = 6 2/10

I put the numbers in that form for a reason..

ur number lines are in intervals of 1/10

so ur graph is : graph D


fine the distance between 8 and 32

Answers

Let d = distance between the two given numbers.

d = 32 - 8

d = 24

The difference is 24.
Do 32 minus 8
The answer is 24

The lengths of the sides of a triangle are 8, 15, and 17. if the longest side of a similar triangle is 51, what is the length of the shortest side?

Answers

If the longest side on the similar triangle is 51 and the longest side of the first triangle is 17, then you divide 51 and 17.

51 / 17 = 3

So the similar triangle is 3 times as big.
To find the shortest side of the similar triangle, you multiply 8 and 3.

8 * 3 = 24

The length of the shortest side of the similar triangle is 24.

Hope this helps!

he length of the shortest side is 32

Similar triangles and scale factors

Given the length if the sides of the triangle to be 8, 15 and 17. If the longest side of a similar triangle is 51, then the scale factor will be expressed as:

Scale factor  = 51/17

Scale factor = 4

For the shortest side;

Length  = 8 * scale factor

Length  = 8 * 4

Length = 32

Hence the length of the shortest side is 32

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You roll a six-sided number cube. Which events are mutually exclusive?
A) rolling a multiple of 2 and a multiple of 4
B) rolling a multiple of 3 and a multiple of 6
C) rolling an even number and an odd number
D) rolling a prime number and an even number

Answers

Events are mutually exclusive only if they cannot both be true.
Only C is alright.

4 is a multiple of two so it can't be right.
Same logic works for B.

And then 2 is prime so then D is out too.

Answer:

C) Rolling an even number and an odd number.

Step-by-step explanation:

We are asked to choose the correct option that represents two mutually exclusive events.

Since we know that mutually exclusive events are those events, who can not happen at the same time. As we cannot have both heads and tails in one toss, either we will get heads or we will get tails.

Let us check our given choices one by one.

A) Rolling a multiple of 2 and a multiple of 4.

Multiples of 2: 2, 4, 6,..

Since 4 is a multiple of 2, so both events are not mutually exclusive and option A is not a correct choice.

B) Rolling a multiple of 3 and a multiple of 6.

Multiples of 3: 3, 6, 9,...

Since 6 is a multiple of 3, so both events are not mutually exclusive and option B is not a correct choice.

C) Rolling an even number and an odd number.

Odd numbers on a cube: 1, 3, 5.

Even numbers on a cube: 2, 4, 6.

Since on one roll of dice we can either have an odd or an even number, both events are not possible with a single roll, therefore, option C is the correct choice.

D) Rolling a prime number and an even number.

Prime number on a cube: 2, 3, 5.

Even numbers on a cube: 2, 4, 6.

We can clearly see that 2 is a prime number and it is even as well, therefore, option D is not a correct choice.

The community center has a pottery class each month. Each student pays $15 for the class and $27 for materials. This month the pottery class brought in a total of $714. How many students are in the class this month?

please answerrrrrr

Answers

If you add $15 + $27 because that's how much it costs for each student, you get $42. Then you divide $714 by $42, you get 17 and that's how many students are in the class this month.

Answer:

[tex]17[/tex]

Step-by-step explanation:

Let the number of students in pottery class be [tex]x[/tex]

Price each student pays for the class = [tex]\$15[/tex]

Price each student pays for the material = [tex]\$27[/tex]

Total earning of pottery class = [tex]\$714[/tex]

We can write this in expression as-

[tex]15x + 27x = 714[/tex]

Solving the expression we get[tex]15x + 27x = 714\\42x = 714\\x = \frac{714}{42} \\x = 17[/tex]

There are total [tex]17[/tex] students in the class this month

Bob runs 5 miles in 38 minutes. at the same rate, how many miles would he run in 57 minutes?

Answers

Sent a picture of the solution to the problem (s).

What is the circumference of the circle shown below, given that the length of ED (the minor Arc) is 6?

Answers

45' x 8 = 360

To find DE = 6 x 8 =48.
The answer is 48 because you can fit 8 45 degrees angle in the circle and since there are 8 sides, multiply the 6 with the 8 which equals to the answer

The length of a rectangle is 10 feet more than the width. if the perimeter of the rectangle is 180 feet, find the length and the width of the rectangle

Answers

The length would be 50 ft and the width would be 40 ft.

A polygon has 10 sides. What is the measure of the interior angles of the polygon?

Answers

Example 1: Find the interior angle sum of a decagon. A decagon has 10 sides, so: Example 2: Find the exterior angle sums, one exterior angle at each vertex, of aconvex nonagon. The sum of the exterior angles of any convex polygon is 360°.

144 degrees is the measure of the interior angles of the polygon.

What is a polygon?

In Mathematics, a polygon can be defined as a two-dimensional geometric figure that consists of straight line segments and a finite number of sides. Additionally, some examples of a polygon include the following:

• Triangle

• Quadrilateral

• Pentagon

• Hexagon

• Heptagon

• Octagon

• Nonagon

Generally speaking, the measure of the angle at the center of a regular polygon is equal to 360 degrees. Therefore, the smallest angle of rotation that maps (carries) a regular polygon onto itself can be calculated by using this formula:

α = 360/n

The sum of the measures of the interior angles of an n-sided polygon is given by the formula:

S = (n - 2) × 180 degrees

So, for a 10-sided polygon, we have:

S = (10 - 2) × 180 = 8 × 180 = 1440 degrees

To find the measure of each interior angle, we divide the sum by the number of angles (which is the same as the number of sides for a polygon):

m = S/n = 1440/10 = 144 degrees

Therefore, each interior angle of a 10-sided polygon has a measure of 144 degrees.

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Darcy is buying apples and oranges for a large fruit basket to give away as a door prize at a charity event. apples cost $.24 each and oranges cost $.80 each. she has $12 to spend and would like to purchase at least 20 pieces of fruit total

Answers

Let x be the number of apples 
Let y be the number of oranges 

x+y≤20 
0.24x+0.8y≤12

x≤20-y 

0.24(20-y)+0.8y≤12
4.8-0.24y+0.8y≤12
0.56y≤7.2
y=12.9 (you can choose 12 here, since you can't have a fraction of an orange sold) 

x= 7.14 (again, rounding this off to 7) 

Therefore, Darcy got 12 oranges and 7 apples. 

Hope I helped :) 

The system of linear inequalities that represent the situation are

$0.24x + $0.80y ≤ $12 and x + y ≥ 20

Here is the complete question:

Write a system of linear inequalities to represent this situation.

Darcy is buying apples and oranges for a large fruit basket to give away as a door prize at a charity event. Apples cost $0.24 each and oranges cost $0.80 each. She has $12 to spend and would like to purchase at least 20 pieces of fruit total.

To write a system of linear inequalities to represent the situation, we will consider the statements one after the other.

Let x represent the number of apples and y represent the number of oranges.

From the second statement,

"Apples cost $0.24 each and oranges cost $0.80 each"; and

From the next statement,

"She has $12 to spend"

That means, she can either spend $12 or less than $12.

Therefore, we can write that

$0.24x + $0.80y ≤ $12

Also, from the following statement

"and would like to purchase at least 20 pieces of fruit total"

That means, she will either purchase 20 pieces of fruit or greater than 20 pieces of fruit.

Then we can write that

x + y ≥ 20

Hence, the system of linear inequalities that represent the situation are

$0.24x + $0.80y ≤ $12 and x + y ≥ 20

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Find slope through the points (3,-1) & (2,5)

Answers

okay the slope formula is     y2-y1/x2-x1

5--1
------ = 6/-1 = -6
2-3

the slope is -6
m = -4 is the slope. hope this helps

△MNO is rotated about point A to △M′N′O′ . Which statements are true about the pre-image and image? Select each correct answer.


The image is the same shape but a different size than the pre-image.

The image is the same size but a different shape than the pre-image.

MN ≅ M′N′

Answers

The correct option is MN = M'N' since the first two options can be eliminated through the rules of rigid transformations.

Answer:

MN ≅ M′N′

Step-by-step explanation:

When you rotate an image on a certain pivot point, you´ll end up with two equal images in shape and form, but with different angles from the center, since the image is the same shape, form and length, their sides and angles should be the same, so the sentece that is true is that MN ≅ M′N′.

Which of these shows the result of using the first equation to substitute for y in the second equation, then combining like terms?
y = 3x
2x + 3y = 55

A. 11x = 55
B. 5x = 55
C. 9x = 55
D. 5y = 55

Answers

Answer: A. [tex]11x=55[/tex]

Step-by-step explanation:

The given system of equations:

[tex]y = 3x.....................(1)\\\2x + 3y = 55.................(2)[/tex]

When we substitute the value of y in equation (2), we get

[tex]2x+3(3x)=55\\\\\Rightarrow\ 2x+9x=55\\\\\Rightarrow\ 11x=55[/tex]

Hence, the result of using the first equation to substitute for y in the second equation, then combining like terms is [tex]11x=55[/tex]

what is completely factored form of x^4+8x^2-9

Answers

x^4 + 8x^2 - 9 
= (x^2 + 9)(x^2 - 1)
= (x^2 + 9)(x + 1)(x - 1)  Answer

Answer: B would be the correct answer on edg. (X+1)(x-1)(x^2+9)

Rolando had $120,000 in a CD at Big Bucks Bank, which just failed. If the FDIC insurance limit per depositor, per bank, is $250,000, how much will Rolando get back?

Answers

I think Rolando would get back 120,000. Because the insurance limit is 250k, Rolando only put in 120k, so he should get everything back.

the answer will be 120,000


at a local pizza parlor, patrons have 2 choices of cheese and 14 choices of topping. in how many different ways can a patron choose 1 type of cheese and 1 type of topping?

30

28

16

2

Answers

the answer would be 28
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