add
9a+8b-a+b and 10a-9b+6a-1b

Answer:

Bobby is 8

Step-by-step explanation:

Bobby is 8 because 8*2=16. and 16+8=24

Answer:

9

Step-by-step explanation:

[tex]729 = 9^3[/tex]

Answer:

Step-by-step explanation:

When solving a system of equations using substitution, you look for an equation that makes it simple to write an expression for one of the variables in terms of the other(s). Here, the first equation already gives you an expression for x, so it is easiest to substitute for x in the second equation:

  (2y -5) +2y = 4 . . . . . . (2y-5) substituted for x

  4y = 9 . . . . . . . . . . add 5 and simplify

  y = 9/4 . . . . . . . . divide by 4

  x = 2(9/4) -5 = 9/2 -10/2 = -1/2

The solution is (x, y) = (-1/2, 9/4).

Answer:

H

Step-by-step explanation:

So when finding the area you need to square the radius. In the problem she only multiplied it by two. so she needs to do 49×3.14.

Hope this helps!

[tex][Hello,BrainlyUser][/tex]

Answer:

[tex]1\frac{1}{15}[/tex]

Step-by-step explanation:

To Convert to a mixed number..

First, Let's add both fraction.

[tex]\frac{2}{15} + \frac{14}{15}[/tex]

The two fractions have like denominators so you can add the numerators.

[tex]\frac{2+14}{15}=\frac{16}{15}[/tex]

The fraction

[tex]\frac{16}{15}[/tex]

is the same as

[tex]16[/tex] ÷ [tex]15[/tex]

Convert to a mixed number using

long division for 16 ÷ 15 = 1R1, so

[tex]\frac{16}{15}=1\frac{1}{15}[/tex]

Therefore,

[tex]\frac{2}{15}+\frac{14}{15}=1\frac{1}{15}[/tex]

Hence, your answer is 1 1/15

[tex][CloudBreeze][/tex]

Answer:

Step-by-step explanation:

because CE is 8 and the space is equal to ET

Answer:

He delivered [tex]\sf {\frac{1}{2}[/tex] of the newspapers in the second hour.

Explanation:

[tex]\sf total \ newspapers: \ 1[/tex]

newspapers left to deliver after first hour:

[tex]\sf 1 - \frac{3}{8}[/tex]

[tex]\sf \frac{8}{8} - \frac{3}{8}[/tex]

[tex]\sf \frac{8-3}{8}[/tex]

[tex]\sf \frac{5}{8}[/tex]

in second hour:

[tex]\sf \frac{5}{8} * \frac{4}{5}[/tex]

[tex]\sf \frac{1}{2} * \frac{1}{1}[/tex]

[tex]\sf \frac{1}{2}[/tex]

Answer:

4

Step-by-step explanation:

4    0

             12 - 0 = 12

3    3

             12 - 0 = 12             12 + 12 - 16 = 8     8/2 = 4

0    4

              0 - 16 = -16

4    0

Answer: always

Step-by-step explanation:

Answer:

[tex]\huge\boxed{\sf{Und.efined}}[/tex]

Step-by-step explanation:

Hello.

There are 2 ways to solve this problem.

One of them is to use the slope formula.

The other one is to simply look at the x-coordinates and see that they are the same.

This means the slope is undefined.

I hope it helps.

Have a great day.

[tex]\boxed{imperturbability}[/tex]

Answer:

infinite

Step-by-step explanation:

[tex]\mathsf{slope=\dfrac{change \ in \ y}{change \ in \ x}}[/tex]

[tex]\implies \mathsf{slope=\dfrac{0-3}{-4--4}=-\dfrac30}[/tex]

Therefore the slope is infinite

Answer:

D. 82

Step-by-step explanation:

Answer:

O [tex]\sf y = 20000(1 - 08) ^5[/tex]

O $13181.63

explanation:

[tex]\sf compound \ interest = P(1 + \dfrac{r}{100})^{n}[/tex]

insert the following given values

[tex]\sf \hookrightarrow 20000(1 - \frac{8}{100} )^5[/tex]

[tex]\sf \hookrightarrow 20000(1 - 0.08)^5[/tex]

[tex]\sf \hookrightarrow 13181.63[/tex]

Answer:

A. 68 feet ( the length of the outer curve to the nearest foot

Option C is correct, the the length of the outer curve to the nearest foot is 86 feet.

The formula for length of arc to find the length of the outer curve.

Thus; Arc Length = radius ×angle

We are given;

Radius = 70 ft

Angle = 70° = 70 × π/180 radians

Thus;

Arc length = 70 × (70 × π/180)

Arc length = 86 ft

Therefore, the outer curve is 86 feet long. Option C is correct.

To learn more on Arc length click here:

https://brainly.com/question/29021920

#SPJ5

Answer:

C = (12, 13)

Step-by-step explanation:

The centre of the rectangle is O.

Find the difference between the x and y-values of O and A:

[tex]O_x-A_x=\dfrac{21}{2}-9=\dfrac32[/tex]

[tex]O_y-A_y=\dfrac{19}{2}-6=\dfrac72[/tex]

Now add those difference to the coordinates of O to find C:

x value of C = [tex]O_x+\dfrac32=\dfrac{21}{2}+\dfrac32=\dfrac{24}{2}=12[/tex]

y value of C = [tex]O_y+\dfrac72=\dfrac{19}{2}+\dfrac72=\dfrac{26}{2}=13[/tex]

Therefore, the coordinates of C = (12, 13)

Answer:

Step-by-step explanation:

In rectangle the diagonals bisect each other. So,O is the midpoint of AC

[tex]Midpoint = \left(\dfrac{x_{1}+x_{2}}{2},\dfrac{y_{1}+y_{2}}{2} \right)\\\\\\x_{1}=9 \ and \ y_{1}=6\\\\\left(\dfrac{9+x_{2}}{2},\dfrac{6+y_{2}}{2} \right) = \left (\dfrac{21}{2},\dfrac{19}{2} \right)[/tex]

Compare the x- coordinates and y- coordinates

[tex]\dfrac{9+x_{2}}{2}=\dfrac{21}{2} \ ; \ \dfrac{6+y_{2}}{2}=\dfrac{19}{2}\\\\\\9+x_{2}=\dfrac{21}{2}*2 \ ; \ 6 +y_{2}=\dfrac{19}{2}*2[/tex]

9 + x₂ = 21         ;  6 +y₂ = 19

     x₂ = 21 -9     ;       y₂ = 19 - 6

     x₂ = 12         ;        y₂ = 13

C(12 ,13)

Answer: 9

Step-by-step explanation: 105/12=8.75

8 batches are not enough so she should do it one more time to finish

Answer:

30 percent

Step-by-step explanation:

7/10 is 70%

100%-70%=30%

Answer:

the answer is 30%

Step-by-step explanation:

I got the answer correct on the test

Answer:

5.138

2.624+= 7.762 is the answer

6 2

Answer:

Answer: 1/3

Step-by-step explanation:

The probability of getting tails when tossing a coin is 1/2

The probability of rolling a number greater than 2 is 4 (3 4 5 6)

So 4/6 or 2/3 of the time is the probability of throwing the die and getting a number greater than 2.

The combined probability of getting both is 1/2 * 2/3 = 2/6 or 1/3

Answer:

x= -49.5

y= -13.5

Step-by-step explanation:

-x-y= -63

-x+y=-36

y=-13.5

x=-49.5

hope this helps!

Answer:

Step-by-step explanation:

if it is linear ,then

[tex]slope=\frac{1-0}{\frac{\pi }{8}-0 } =\frac{8}{\pi } \\eq.~of~line~is\\y-0=\frac{8}{\pi } (x-0)\\y=\frac{8}{\pi } x[/tex]

Answer:

15:32

Step-by-step explanation:

3/4 of an hour = 45 minutes.
1 3/5 hours = 8/5 of an hour = 96 minutes

So, the ratio can be written as 45:96, or simplified as 15:32

Answer:

5

Step-by-step explanation:

remember, when you have a double negative, you can instead add so:

4 1/3-(-2/3) is the same as

4 1/3 + 2/3 = 5

Answer:

8 1/2 divided by 2 1/4 = 3 7/9 inches

Answer:

Step-by-step explanation:

It expresses how much money he had to pay in total for the sheet music and drumsticks altogether.

Have an amazing day!

Please mark brainliest!

Using a system of equations, it is found that the usual waiting time for the bumper cars is of 7.5 min.

A system of equations is when two or more variables are related, and equations are built to find the values of each variable.

In this problem, the variables are:

The waiting time for the roller coaster is usually 3 times as long as the waiting time for the bumper cars, hence:

x = 3y

The park's website says that visitors who go on both rides should expect to wait a total of 30 min, hence:

x + y = 30

Since x = 3y:

3y + y = 30

4y = 30

y = 30/4

y = 7.5.

The usual waiting time for the bumper cars is of 7.5 min.

More can be learned about a system of equations at https://brainly.com/question/24342899

Answer:

$6.83

Step-by-step explanation:

37 x 59 = 2183

Because it is dollars you need to divide it by 100:

$21.83 - 15 = 6.83

Answer:

21÷3= 7

ans check 7×3 = 21

answer =21