find f (×-1) when f (×) =-3×+7. find f (x-1). what's the answer?

Answer:

x = 2

Step-by-step explanation:

When 2 secants are drawn from an external point to a circle the following theorem applies

outside × whole = outside × whole, that is

(x + 1)(x + 1 + 11) = (x + 4)(x + 4 + 1) ← simplify

(x + 1)(x + 12) = (x + 4)(x + 5) ← expand factors on both sides

x² + 13x + 12 = x² + 9x + 20 ( subtract x² from both sides )

13x + 12 = 9x + 20 ( subtract 9x from both sides )

4x + 12 = 20 ( subtract 12 from both sides )

4x = 8 ( divide both sides by 4 )

x = 2

Hi There!

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Problem #1:

At the dealership where she works, Sade fulfilled 3/10 of her quarterly sales goal in January and another 1/10 of her sales goal in February. What fraction of her quarterly sales goal had Sade reached by the end of February?

3/10 + 1/10 = 4/10

4/10 of her goal.

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Problem #2:

Shane has been monitoring his mileage. According to last week's driving log, he drove 1/10 of a mile in his car and 9/10 of a mile in his truck. How far did Shane drive last week in all?

1/10 + 9/10 = 10/10 = 1

Shane drove 1 mile.

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Problem #3:

For a class experiment, Vina's class weighed a log before and after subjecting it to termites. Before subjecting it to termites, the log weighed 7/10 of a pound. After the termites, the log weighed 3/10 of a pound. How much weight did the termites take from the log?

7/10 - 3/10 = 4/10

The termites took 4/10 pound away from the log.

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Hope This Helps :)

Answers

First train's speed is 363 mph

Second train's speed is 356.1 mph

=====================================

Explanation:

x = speed of first train, y = speed of second train

x+y = 719.1 because the two speeds add to this value (sum means result of addition)

x = y+6.9 due to the fact that the first train (x) is faster than the second train (y) by 6.9 mph

Use substitution to find that...

x+y = 719.1

y+6.9+y = 719.1 <--- replace x with y+6.9

2y+6.9 = 719.1

2y = 719.1-6.9 <--- subtract 6.9 from both sides

2y = 712.2

y = 712.2/2 <--- divide both sides by 2

y = 356.1

now use this y value to find x

x = y+6.9

x = 356.1+6.9

x = 363

The speed of the first train is 363 mph and the speed of the second train is 356.1 mph. To find these, we solved the equation 2x + 6.9 = 719.1, where x represents the speed of the slower train.

To solve this problem, we will use algebra to set up equations based on the information given. Let's denote the speed of the second train as x miles per hour. Accordingly, the speed of the first train is described as x + 6.9 miles per hour, since we are told it is 6.9 mph faster than the second train. The sum of their speeds is given to be 719.1 mph. Therefore, we can write the following equation to find the speeds of each train:

Hence, the speed of the second train is 356.1 mph. Now to find the speed of the first train we add 6.9 mph to the speed of the second train:

So the speed of the first train is 363 mph, and the speed of the second train is 356.1 mph.

Answer:

Fraction 3 over 8, because fraction 7 over 8 minus 2 times fraction 1 over 4 equals fraction 7 over 8 minus fraction 2 over 4.

Step-by-step explanation:

Rickey has [tex]\frac{7}{8}[/tex] of a cup of cereal in a bowl.

He then gave two [tex]\frac{1}{4}[/tex] or [tex]2\times \frac{1}{4}[/tex] or  [tex]\frac{2}{4}[/tex] cups of cereal from his bowl to his little sister.

Amount of cereal left in Rickey's bowl = [tex]\frac{7}{8}- \frac{2}{4}[/tex]

= [tex]\frac{7-4}{8}=\frac{3}{8}[/tex]

So, the answer is -

Fraction 3 over 8, because fraction 7 over 8 minus 2 times fraction 1 over 4 equals fraction 7 over 8 minus fraction 2 over 4.

The length of the rectangular garden will be 10 meters. Thus, the correct option is B.

Given that:

Perimeter, P = 30 meters

Relation, W = L/2

Let W be the rectangle's width and L its length.

The perimeter of the rectangle will be defined as the total length of all of its sides. So the rectangle's perimeter will be given as,

Perimeter of the rectangle = 2(L + W) units

The length of the garden is calculated as,

30 = 2(L + L/2)

30 = 2 x 3L / 2

3L = 30

L = 10 meters

Thus, the correct option is B.

More about the perimeter of the rectangle link is given below.

https://brainly.com/question/15287805

#SPJ6

Answer:

it is 70 minutes total

Step-by-step explanation:

just add them

By adding the time spent on each game, we find that Porsche spent a total of 70 minutes at Level 1 across four gaming sessions.

Porsche spent a total amount of time at Level 1 over four games by adding the time taken for each game. This is a simple addition problem. The total time taken is:

First time: 24 minutes

Second time: 18 minutes

Third time: 16 minutes

Fourth time: 12 minutes

Using mental math, we can add these up:

24 + 18 + 16 + 12 = 70 minutes

Therefore, Porsche spent 70 minutes playing at Level 1 over the course of these four games.

Answer:

The solution of the system is the point where the graphs intersect, or have the same x and y values. This means that the company's cost to produce 400 caps is the same as the income made from selling 400 caps. Therefore, the company will not make a profit.

The cost to produce 400 caps is the same as the income made from selling 400 caps.

The company will break even when it sells 400 caps; it will not make a profit.

Step-by-step explanation:

Answer: Your response may vary. Sample answer below is the correct response.

Step-by-step explanation:  Sample response: The solution of the system is the point where the graphs intersect, or have the same x and y values. This means that the company's cost to produce 400 caps is the same as the income made from selling 400 caps. Therefore, the company will not make a profit.

Make sure to include in your answer:

Good Luck! :)

Answer: x = 5

Step-by-step explanation:

NOTE: 343 = 3 * 3 * 3 * 3 * 3

3ˣ = 3⁵

Since the bases are the same, we can eliminate the base and set the exponents equal to each other:

x = 5

Answer:

[tex]3^{5}[/tex]

Step-by-step explanation:

3 × 3 × 3 × 3 × 3 = 243

Answer:

120√6

Step-by-step explanation:

Simplify the 5√8 to 2√2

simplify the √18 to 3√2

so it would be √3 * 2√2 * 5 * 2√2 * 3√2

when a square root of an expression is multiplied by itself:

√3 * 2 * 2* 5 * 2 * 3√2

so as we calculate it, 2 * 2* 5 * 2 * 3 = 120 and √2 * √3 = 6

[tex]\sqrt3\\2\sqrt2\\5\sqrt8=5\sqrt{4\cdot2}=5\sqrt4\cdot\sqrt2=5(2)\sqrt2=10\sqrt2\\\sqrt{18}=\sqrt{9\cdot2}=\sqrt9\cdot\sqrt2=3\sqrt2\\\\\sqrt3\cdot2\sqrt2\cdot5\sqrt8\cdot\sqrt{18}=\sqrt3\cdot2\sqrt2\cdot10\sqrt2\cdot3\sqrt2\\\\=(2\cdot10\cdot3)(\sqrt3\cdot\sqrt2\cdot\sqrt2\cdot\sqrt2)=60\sqrt{3\cdot2}\cdot\sqrt{2\cdot2}\\\\=60\sqrt6\cdot\sqrt4=60\sqrt6\cdot2=(60\cdot2)(\sqrt6)\\\\=\boxed{120\sqrt6}[/tex]

Answer:

A and B.

Step-by-step explanation:

where m is the slope and c is the the y-intercept.

A. y = x + 6

For this equation m = 1

B. y = -x - 9  

For equation B, m = -1

C. y = 2x + 1  

In this equation, m = 2  

D. y = -7x - 2

In equation D, m = -7

The equation with the highest slope is D while the one with the least slope/steep is A and B.

Answer:

3 1/5

Step-by-step explanation:

"1 over 5" means 1/5

3 "1 over 5" would then translate to: 3 1/5

~

Answer:

6 1/5

Step-by-step explanation:

31/5= 6 with one left over

6 1/5 keep denominator the same

Answer:

b,d,e

Step-by-step explanation:

Rock the House

Cost = initial fee + hourly charge * hours

Cost = 500 + 50h

Elegant Homes

Cost = initial fee + hourly charge * hours

Cost = 0+ 75h

Cost = 75h

Set the costs equal

500+ 50h = 75h

Subtract 50 h from each side

500 = 25h

Divide by 25

500/25= 25h/25

25 =h

The costs are equal at 20 hours

If less than 20 hours it costs less at Elegant homes.

If more than 20 hours it costs less at Rock the house

Answer:

None of the above

Step-by-step explanation:

a.  (10+50) *4

   60 *4

  240

b.  2 * (19+13)

  2* (32)

64

c.  ( 120+8)÷3

     128/3

     42 2/3

d .  4+ 8*8

   4 + 64

    68

Answer:

gain = 0

% = 0

Step-by-step explanation:

Profit

He sells one for a profit of 25% That means he sells one of them for 100% + 25% = 125%

₹1500 * 125/100 = ₹187500/100 = ₹1875

Loss

Here he sells it for 25% less than the selling price he wanted.

100% - 25% = 75%

₹1500 * 75/100 = ₹112500/100 = ₹1125

Discussion

He should make ₹1500 + ₹1500 = ₹3000 without either profit or loss.

What he actually accomplishes is ₹1125 + ₹1875 = ₹3000

So he has a net gain (loss) of 0.

The % is 0

Answer:

X=62

Step-by-step explanation:

So solving for x, we have 3x-6=180 or 3x=186. So x=62

Question

what is 2x+6+x-12=180

Answer:

Step-by-step explanation:

2x + 6 + x * 12 = 180

3x = 180 - 6 + 12

3x = 186

x = 186 : 3

x = 62

Answer:

a. Vertical angles: 1 and 4, 2 and 3, 5 and 8, 6 and 7.

b. Supplementary angles: 1 and 2, 2 and 4, 3 and 4, 1 and 3, 5 and 6,

6 and 8, 7 and 8, 5 and 7.

c. Corresponding angles: 1 and 5, 2 and 6, 3 and 7, 4 and 8.

d. Alternate interior angles: 3 and 6, 4 and 5.

e. Alternate exterior angles: 1 and 8, 2 and 7.

Step-by-step explanation:

a. Vertical angles (opposite by the vertex):

1 and 4, 2 and 3, 5 and 8, 6 and 7

b. Supplementary angles (sum 180°):

1 and 2, 2 and 4, 3 and 4, 1 and 3, 5 and 6, 6 and 8, 7 and 8, 5 and 7

c. Corresponding angles (same position respect the right lines and the secant):

1 and 5, 2 and 6, 3 and 7, 4 and 8

d. Alternate interior angles (between the lines but in different position with respect the secant):

3 and 6, 4 and 5

e. Alternate exterior angles (not between the lines and in different position with respect the secant):

1 and 8, 2 and 7

Answer:

3.25

Step-by-step explanation:

If we are rounding to the hundreds place, we look at the thousandths place or the 6.  Since 6>=5 we will round up.  The 4 will become a 5

 3.246 rounds to 3.25

Answer:

3.25

Step-by-step explanation:

AS the  digit after 4 is  6 we round up the 4.

Answer:

40+70= 110

8+2=10

110+10=120

Step-by-step explanation:

Hi there! :)

Answer:

120

*The answer must have a positive sign.*

Step-by-step explanation:

Distributive property: a(b+c)=ab+ac

First, you add by the numbers from left to right.

[tex]72+48=120[/tex]

Final answer is 120.

Hope this helps!

Have a nice day! :)

:D

-Charlie

Thanks!

Answer:

12

Step-by-step explanation:

√9 = 3 and √16 = 4

3 + 4 = 7

There is the same relationship in the second and third  set of numbers.

so for 25,9 the answer is 5 + 7 = 12

Answer:

12.

Step-by-step explanation:

We have been given format of different numbers. We are asked to find the missing value for our given format.

[tex]9,16=7[/tex]

Taking square root of 9 and 16 we will get,

[tex]\sqrt{9}=3[/tex]

[tex]\sqrt{16}=4[/tex]

[tex]3+4=7[/tex]

Similarly, we can see that by taking the square root of all the on the left side of equation and adding them we get right side of equation.

[tex]\sqrt{4}=2[/tex]

[tex]\sqrt{36}=6[/tex]

[tex]2+6=8[/tex]

[tex]\sqrt{121}=11[/tex]

[tex]\sqrt{81}=9[/tex]

[tex]11+9=20[/tex]

Upon taking square root of 25 and 49 we will get,

[tex]\sqrt{25}=5[/tex]

[tex]\sqrt{49}=7[/tex]

[tex]5+7=12[/tex]

Therefore, the missing number of our given sequence is 12.

Answer:

I am pretty sure your answer is n because of the font i think.

Answer:

I believe the correct answer would be A. N.

Step-by-step explanation:

For two reasons. Reason 1, it's in a different font than everything else which indicates that it stands for something more than just the letter N. Reason two is, letters are usually used to indicate names of points on graphs, and in equations.

Answer:

The parameters are 7 and 45.

Step-by-step explanation:

Let's model the situation.

Let h be the number of hours Jason worked in a week.

Then, his total income is calculated as follows

His hourly charges = $7

Number of hours worked = h

So, hourly charges for the hours he worked = 7h

Additional income offered by his boss = 45

So, his total income per week = 7h + 45

Here, 7, the hourly charge and 45, the additional income are the parameters.

Answer: choice B 12 cm^2

A = (1/2)*b*h

A = 0.5*b*h <---- 1/2 is the same as 0.5

A = 0.5*4*6 <---- replace b with 4; h with 6

A = 2*6

A = 12

Alternatively, you can multiply the base and height to get 24, then cut that in half to get 12.

Answer:

3 3/4 hours

Step-by-step explanation:

The answer is 3 3/4 hours

Hope this helps :)

Answer:

It would be -3/5, -0.4, |-1/2|, 0.6, 4/5.

Step-by-step explanation:

Answer:

-3/5 , -0.4 , -1/2 , 0.6 , 4/5

Step-by-step explanation:

-0.6, -0.4 , 0.5 , 0.6 , 0.8

In decimal form

Answer:

402.88mm³

Step-by-step explanation:

To find the answer to this, we need to find the total area of the coin and then the size of the inner coin.

As this is a cylinder, the formula is:

[tex]\pi r^{2} h[/tex]

So lets find the area of the whole coin.

The radius is 11.5 and height is 2.2

[tex]\pi * 11.5^{2} * 2.2 = 914.05[/tex]

Now, the area of the inner circle:

Radius is 8.6 and height is 2.2:

[tex]\pi * 8.6^{2} * 2.2 = 511.17[/tex]

Now to find the area of the silver ring in the coin, you subtract the inner circle measurement from the whole coin measurement:

914.05 - 511.17 = 402.88

So the volume of the outer ring is 402.88mm³

Hello there! Your answer would be x = 9/24.

You want to isolate x, and get everything on the other side of the equation.

Let's start by subtracting 10x from both sides. This will cancel it out on the right side, so our x values are only on the left side.

34x-10x - 18 = 10x-10x - 9

24x - 18 = - 9

Next, you want to add 18 to both sides so the x values are on their own side.

24x - 18+18 = - 9+18

24x = 9

Now our last step is to divide both sides by 24 to finish isolating x.

24/24x = 9/24

x = 9/24

The equation is already simplified, so we don't need to simplify any further. I hope this helps and have a great day!

The solution to the equation 34x - 18 = 10x - 9 is x = 3/8.

The given expression is,

34x - 18 = 10x - 9

Combining like terms.

We can do this by subtracting 10x from both sides, which gives us:

34x - 10x - 18 = -9

Simplifying further, we can combine the x terms:

24x - 18 = -9

Next, we'll add 18 to both sides of the equation:

24x = 9

Finally, we'll divide both sides by 24 to isolate x:

x = 9/24

Simplifying the fraction gives us:

x = 3/8

So the solution to the equation 34x - 18 = 10x - 9 is x = 3/8.

To learn more about equations visit:

https://brainly.com/question/29174899

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Answer:

it would be 30

Step-by-step explanation:

you are rounding the tenth so the .45 is not important

you just need to look at 28 which is closer to 30 than it is to 20.

Answer:

57.5 or 58

Step-by-step explanation:

1150 = 20x

Divide both sides by 20 to get 57.5

To be proper, you should say that 58 gallons will be used.

It all depends on the teacher, but I know that mine used to tell me to round these types of things up. If you would like to be more exact, just put 57.5 gallons.

Answer:

17

Step-by-step explanation:

because 12 people can sit at each table, so youd divide 198 by 12 to see how many tables youd need, and you get 16.5. you cant have 16.5 tables, so always round up when it comes to objects, humans, things, etc. so you get 17