Solve for “a”
a - 40 = 21

The answer is 360in,hope this help!

Answer:

Part A. = 2,000,000,000

Step-by-step explanation:

To find the first measurements solve the equation.

10^3 = 1,000

So now 1,000 multiplied by 4

4 x 1,000 = 4,000

for the second side or measurement solve again.

10^5 = 100,000

5 x 100,000 = 500, 000

with both measurements 4,000 and 500,000 to find area we need to multiply both sides

4,000 x 500,000 = 2,000,000,000

See if you can solve the other one, if you can't I'll help!

Hope this helps!

Please mark as brainliest answer!! THanks!!

it is 3

4 time 3 plus 1.3 equals 13.3

Answer:

The proportion is true.

Step-by-step explanation:

We are given the following proportion and we are to determine whether it is a true proportion or not:

[tex] \frac { 15 } { 3 } = \frac { y } { 7 } [/tex]

Finding the value of y:

[tex]y = \frac{15}{3} \times 7[/tex]

[tex]y=35[/tex]

So now we have [tex] \frac { 15 } { 3 } = \frac { 35 } { 7 } [/tex]

Checking if it is a true proportion:

[tex] \frac { 15 / 3 } { 3 / 3 } = \frac { 5 } { 1 } [/tex]

[tex] \frac { 35 / 7 } { 7 / 7 } = \frac { 5 } { 1 } [/tex]

Since the simplified fractions are equivalent, therefore the proportion is true.

The given expression, 15/3 = y/7, is a true proportion. Solving for y, we find y = 35.

The given expression, 15/3 = y/7, is a proportion. In a proportion, the product of the means (15 and 7) is equal to the product of the extremes (3 and y). To check if the given proportion is true, we can cross-multiply and check if the products are equal.

Cross-multiplying, we have 15 * 7 = 3 * y. This simplifies to 105 = 3y. Solving for y, we divide both sides of the equation by 3, obtaining y = 35.

Therefore, the proportion is true, and y = 35.

https://brainly.com/question/32430980

#SPJ6

Answer:

(x-7)  (x+4)

Step-by-step explanation:

x^2 - 3x - 28

What two numbers multiply to -28 and add to -3

-7*4 = -28

-7+4 = -3

(x-7)  (x+4)

Answer:

on the top: -28

on the bottom: -3

on the sides: -7 and 4

(x-7)(x+4)

Step-by-step explanation:

Answer:

I think they both have the same amount walked, therefore they are both considered as they have walked the same distance

Step-by-step explanation:

Both walked the same distance.

Joelle walked 2/5 of the way from her house to school
Franco also walked 2/5 of the way from his house to school.

What is fraction?

Fraction is defined as the number of composition constitute the Whole.

The question is incomplete so we assume that Joelle and Franco are the neighbors. and school is equally distance from the both the houses

so if Joelle walked for 2/5 and Franco also walked for 2/5
implies both have walked the same distance.

Thus, Both walked the same distance.  

Learn more about fractions here:
https://brainly.com/question/10708469

#SPJ2

Answer:

4 feet or 4/15

Step-by-step explanation:

1. So first you have to multiply the top and bottom number of each fraction by the denominator of the opposite fraction to have the same denominator:

1/3 X 5/5 = 5/15

3/5 X 3/3 = 9/15

2. Then you compare the two fractions and subtract the smaller fraction from the bigger:

9/15 - 5/15 = 4/15

So Jimmy dived 4 feet deeper the second time

Answer:

The answer is 4/15 in fraction and 4 feet in whole number

Step-by-step explanation:

Answer:

12 minutes

Step-by-step explanation:

if it fills up in 4 minutes but empties in 6 minutes, that means there's a two minute gap of water sitting - meaning it would multiple attempts to get the bucket filled - taking 12 minutes to be exact - hope this helps!!

Is it 12 minutes good job

The percentage chance of a solution, or essentially its mass/volume percent concentration, with 150 g active ingredient in a total of 1000 mL of solution is 15%.

The student is asking how to calculate the mass/volume percent concentration of a solution with a given amount of active ingredient and total solution volume. To find the percentage concentration, we use the mass of the active ingredient and the total volume of the solution. In this case, it is a 150 g active ingredient in 1000 mL of solution, assumming the solution's density is 1.0 g/mL which is typical for dilute aqueous solutions.

In order to calculate the mass/volume percent (m/v %), we use the formula:

% m/v = (Mass of solute in grams × 100) ÷ Volume of solution in mL

Plugging in the values we get:

% m/v = (150 g × 100) ÷ 1000 mL = 15%

Therefore, the solution has a mass/volume percent concentration of 15%.

Final answer:

The percentage chance of the solution with 150g of active ingredient in a total of 1000mL is 15%.

Explanation:

To calculate the percentage chance of a solution containing 150 g active ingredient in a total of 1000 mL of solution, we use the concept of mass/volume percentage. This concept is often used in chemistry to express the concentration of a solute in a solution.

Assuming the density of the solution is 1.0 g/mL, which is common for dilute aqueous solutions, the total mass of the solution will also be 1000 g.

The mass/volume percentage is hence calculated as:

% m/v = (mass of solute in grams) / (volume of solution in milliliters) x 100%

In this case, it's:

% m/v = (150 g)/(1000 mL) x 100% = 15%

So, the solution has a 15% mass/volume percentage of active ingredient.

Answer:

Part a) [tex]\frac{AB}{A'B'}=\frac{BC}{B'C'} =\frac{AC}{A'C'}[/tex]

Part b) The dilation is an enlargement, because the corresponding sides of the image are larger than the corresponding sides of the original figure.(the scale factor is greater than 1)

Part c) The scale factor is [tex]3[/tex]

Step-by-step explanation:

Part a) Write the similarity statement

we know that

If two figures are similar, then the ratio of its corresponding sides is equal so

[tex]\frac{AB}{A'B'}=\frac{BC}{B'C'} =\frac{AC}{A'C'}[/tex]

substitute the values

[tex]\frac{9}{27}=\frac{12}{36} =\frac{15}{45'}[/tex]

[tex]\frac{1}{3}=\frac{1}{3} =\frac{1}{3'}[/tex] ----> is true

therefore

the figures are similar

Part b) The dilation is an enlargement, because the corresponding sides of the image are larger than the corresponding sides of the original figure. (the scale factor is greater than 1)

Part c) we know that

If two figures are similar, then the ratio of its corresponding sides is equal to the scale factor

Let

z------> the scale factor

x-----> corresponding side of the image

y------> corresponding side of the original figure

so

[tex]z=\frac{x}{y}[/tex]

we have

[tex]x=A'B'=27\ units[/tex]

[tex]y=AB=9\ units[/tex]

substitute

[tex]z=\frac{27}{9}=3[/tex]

The scale factor is greater than 1

therefore

Is an enlargement

Answer:

i think its .b.   sorry if im wrong

Step-by-step explanation:

Answer:

A) 5x -4y =1

B) 4x -2y = 8

Using Cramer's Rule of detrminants

a = 5 b = -4  e=1

c = 4 d = -2  f = 8

denominator = 5 * -2 -(4 *-4) = 6

x = 1 * -2 [-(8 *-4)] / denom = 30 / 6 = 5

y = 5 * 8 -(4 * 1) / denom = 36 / 6 = 6

Step-by-step explanation:

13^2-5^2=144 find the square root of that which is 12

y=kx

10=k15

rearrange the eqn, make k as a subject

k=10/15

k=2/3

Therefore, the answers

y=2/3x

The direct proportion equation that relates x and y is y = 2x/3.

When two quantities are directly proportional it means that if one quantity goes up by a certain percentage, the other quantity goes up by the same percentage as well.

Given that, y is directly proportional to x, when y = 10 when x = 15,

That mean,

y ∝ x

We know the rule of directly proportion,

y = kx

Where k is the proportionality constant,

To find the value of k in the given case, put, x = 15 and y = 10

10 = 15k

k = 2/3

Therefore, we can write,

y = 2/3 x

Hence, the direct proportion equation that relates x and y is y = 2x/3.

Learn more about direct proportion, click;

https://brainly.com/question/13906691

#SPJ2

Answer:

Part a) The ratio of the perimeters is [tex]3[/tex]

Part b) The ratio of the areas is [tex]9[/tex]

Step-by-step explanation:

Part A) What is the value of the ratio (new to original) of the perimeters?

we know that

If two figures are similar, then the ratio of its perimeters is equal to the scale factor

Let

z-----> the scale factor

x-----> the perimeter of the new triangle

y-----> the perimeter of the original triangle

[tex]z=\frac{x}{y}[/tex]

we have

[tex]z=3[/tex]

substitute

[tex]\frac{x}{y}=3[/tex]

Part B) What is the value of the ratio (new to original) of the areas?

we know that

If two figures are similar, then the ratio of its areas is equal to the scale factor squared

Let

z-----> the scale factor

x-----> the area of the new triangle

y-----> the area of the original triangle

[tex]z^{2}=\frac{x}{y}[/tex]

we have

[tex]z=3[/tex]

substitute

[tex]\frac{x}{y}=3^{2}[/tex]

[tex]\frac{x}{y}=9}[/tex]

Answer:

Part a) The ratio of the perimeters is 3

Part b) The ratio of the areas is 9

Answer:

= 0.583

Step-by-step explanation:

Changing 7/12 as a decimal

we could use long method or convert to percentage

such that;

7/12 ×  100 = 700/12

                 =58.333%

This is equivalent to; 58.333/100

= 0.58333 ; to the nearest thousandth

= 0.583

Answer:

The correct answer is option A.    0.583

Step-by-step explanation:

It is given a fraction 7/12. This fraction is a proper fraction.

proper fraction :- Numerator is less than denominator

We have to convert this fraction into decimal number.

we can convert all proper fractions into decimal.

Convert 7/12 into decimal

7/12 = 0.58333333...

It is a non terminating rec-curing decimal number.

Therefore we can write, 7/12 = 0.583

The correct answer is option A.    0.583

Answer:

Domain= how many boxes there are from each circle to the other, and the range is basically the height. In this case, Domain= 8, Range=2

Answer:

44

Step-by-step explanation:

substitute k = 1, 2, 3, 4 into 2k² - 4 and sum the terms

k = 1 : 2(1)² - 4 = 2 - 4 = - 2

k = 2 : 2(2)² - 4 = 8 - 4 = 4

k = 3 : 2(3)² - 4 = 18 - 4 = 14

k = 4 : 2(4)² - 4 = 32 - 4 = 28

sum = - 2 + 4 + 14 + 28 = 44

Heya!

--------------------

Things to know before we solve:

The "4" at the top means that the the sequence only goes to the 4th term.

k = 1 represents that the sequence starts with the 1st term.

(2k² - 4) represents the rule of the sequence, we can substitute 1, 2, 3, and 4 to solve for the terms of the sequence.

--------------------

Solving for each term:

1st term:

2(1)² - 4

2(1) - 4

2 - 4

-2

2nd term:

2(2)² - 4

2(4) - 4

8 - 4

4

3rd term:

2(3)² - 4

2(9) - 4

18 - 4

14

4th term:

2(4)² - 4

2(16) - 4

32 - 4

28

--------------------

Simplifying:

Write these terms in expanded form:

(-2) + 4 + 14 + 28

Find the sum of the series:

(-2) + 4 + 14 + 28 = 44

--------------------

Answer:

The sum of the series is 44

--------------------

Best of Luck!

6.45$ for 3 divide 15.05

Answer:

Step-by-step explanation:

Answer:

A- 4 2/3 miles

Step-by-step explanation:

We are given that one of the hiking trails at a state park is [tex] \frac { 14 } { 3 } [/tex] miles long.

We are to determine whether which of the given answer options shows the length of the hiking trail in mixed number.

Basically, we need to divide 14 by 3 to get: [tex] 4 \frac { 2 } { 3 } [/tex]

So the correct answer option is A. [tex] 4 \frac { 2 } { 3 } [/tex].

Answer:

A- 4 2/3 miles

Step-by-step explanation:

To find the mixed fraction, we divide the numerator with the denominator to get a whole number and a remainder. the remainder becomes the numerator of the proper fraction included in the improper fraction.

14÷3=4 remainder 3.

Therefore our fraction becomes,4 2/3 miles.

Answer:

-7

Step-by-step explanation:

Its really easy, count backwards 16 from 9 and go into negatives.

Here is the answer counting backwards: 9,8,7,6,5,4,3,2,1,0,-1,-2,-3,-4,-5,-6,-7

Answer: -7

Step-by-step explanation:

If you write out the expression it looks like this, x+16=9. All you have to do is solve for x, which would make the answer -7 because 16 more than -7 is 9.

Mark brainliest please!

Answer:

The y-axis is dependent on the variable

Step-by-step explanation:

Just remember the acronym DRY MIX

Depenedent-responding-y axis

Manipulated-independent-x axis

HOPE THIS HELPS!!!!

20 + -4=16, so it is 4

Answer:

36 meters.

Step-by-step explanation:

{Bird's final elevation}= 20m+16m

{Bird's final elevation}=36 m}

Simplifying

y = 0.25x + 2

Reorder the terms:

y = 2 + 0.25x

Solving

y = 2 + 0.25x

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Simplifying

y = 2 + 0.25x

The right answer is y=(x+3)^2 -1

Subtract 5 from both sides.

49 - 5 = 44

11q ≤ 44

Divide both sides by 11.

44/11 = 4

q ≤ 4

The answer is q ≤ 4

11q+5 ≤ 49

Subtracting 5 from both sides

11q ≤ 49 - 5

11q ≤ 44

Dividing both sides by 11

q ≤ 4

First, you need to choose a yellow marble. That is 6/15.

Next, you need to choose a blue marble. That is 5/14, because 1 yellow marble would have been "chosen" already.

So the probability altogether is 6/15 * 5/14 = 1/7, or about 14%.

Final answer:

The probability of randomly choosing a yellow marble, not replacing it, and then choosing a blue marble can be found by multiplying the probabilities of choosing a yellow marble and a blue marble from the jar.

Explanation:

To find the probability of randomly choosing a yellow marble, not replacing it, and then choosing a blue marble, we first need to find the total number of marbles and the number of favorable outcomes.

There are 5 blue marbles, 6 yellow marbles, and 4 green marbles in the jar, for a total of 15 marbles.

When we choose a yellow marble, there are 6 yellow marbles and 14 remaining marbles. When we choose a blue marble from the remaining marbles, there are 5 blue marbles and 13 remaining marbles.

So, the probability of choosing a yellow marble and then a blue marble is:

(6/15) * (5/14) = 1/7 or approximately 0.14

Answer:

I believe the answer is 10/x.

Step-by-step explanation:

A quotient is a result obtained by dividing one quantity by another and sence we don't know what x is it will have to just be an algebraic equation like the question says.

Mark brainliest if you can thanks!

The answer is:

b. [tex]g(x)=x^{2} +3[/tex]

To find what's the equation of the red graph, first, we need to find a function that intercepts the y-axis at 3 and its vertex is located at (0,3)

We must remember that the constant value in a quadratic equation (c) will tell us where the function intercepts the y-axis, so, we are looking for an equation which has a constant value equal to 3, it discards the options a, c and d, so the correct option would be the option b.

Option b function:

[tex]g(x)=x^{2} +3[/tex]

Where,

[tex]a=1\\b=0\\c=3[/tex]

Let's check if the option b is the correct option:

First, let's find the axis intercepts:

Y-axis intercept

[tex]f(x)=x^{2}+3\\f(0)=0^{2}+3\\y=3[/tex]

X-axis intercept

[tex]0=x^{2}+3\\x=\sqrt{-3}[/tex]

There is no x-axis intercepts since the square roots of negative numbers does not exists in the real numbers.

Finding the vertex coordinates:

The x coordinate of the vertex can be found using the following equation:

[tex]x=-\frac{b}{2a}=-\frac{0}{2*1}=0[/tex]

The x coordinate of the vertex is located at x=0, so to find the y-coordinate we must substitute the x value into the parabola equation, so

[tex]y=x^{2}+3=0^{2}+3=3[/tex]

So, the y coordinate of the vertex is located at y=3

Therefore, the vertex of the function is (0,3)

Hence, the calculated values of the option b match with the given graph.

The correct option is: b. [tex]g(x)=x^{2} +3[/tex]

Have a nice day!