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2 years ago

I need help with 11 and 12 I’m not sure

Mathematics

2 answers:

Vlad1618 [11]2 years ago

8 0

Answer:

11. is false

12. is true

Step-by-step explanation:

everything is based on the angle

nekit [7.7K]2 years ago

6 0

11 is false and 12 is true

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The sum of 10and 7 to the difference of a number and 12

anzhelika [568]

( 10 +7) - x = 12
17 - x = 12
- x = 12 - 17
- x = - 5
x = 5

17 - 5 = 12

5 0

3 years ago

In a football game, a team loses 8 yards, then loses 3 yards, then loses 11 yards.

stich3 [128]

Answer:

the lost 22 yards altogether

they now have -22 yards i believe

8 0

3 years ago

Read 2 more answers

Suppose speeds of vehicles traveling on a highway have an unknown distribution with mean 63 and standard deviation 4 miles per h

Mashutka [201]

Answer:

The standard deviation for the sample mean distribution=0.603

Step-by-step explanation:

We are given that

Mean, $\mu=63$

Standard deviation, $\sigma=4$

n=44

We have to find the standard deviation for the sample mean distribution using Central Limit Theorem for Means.

Standard deviation for the sample mean distribution

$\sigma_x=\frac{\sigma}{\sqrt{n}}$

Using the formula

$\sigma_x=\frac{4}{\sqrt{44}}$

$\sigma_x=\frac{4}{\sqrt{2\times 2\times 11}}$

$\sigma_x=\frac{4}{2\sqrt{11}}$

$\sigma_x=\frac{2}{\sqrt{11}}$

$\sigma_x=0.603$

Hence, the standard deviation for the sample mean distribution=0.603

6 0

2 years ago

Whoever gets it right can have brainliest, but answer ASAP!

sveta [45]

Answer:

-29

Step-by-step explanation:

(-4 + -3) x 2^2 - 1

follow order of operations PEMDAS

Parentheses:

(-4 + -3) x 2^2 - 1

(-7) x 2^2 -1

exponents:

(-7) x 4 - 1

multiplication

-28 - 1

subtraction

-29

3 0

2 years ago

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A garden is in the shape of a square with a perimeter of

ElenaW [278]

The perimeter of a square is the sum of its sides and they are all equal, so to obtain the length of each of them we divide the perimeter of the first fence between 4:

P1= 64 feet/4 sides

P1= 16 feet

Then, the length of each side of the second fence will increase 2 feet at each end, as shown in the figure. We have then that the perimeter of the second fence is:

P2 = 20 feet x 4 sides

P2 = 80 feet

The sum of the perimeters of both fences is:

PT = P1 + P2

PT = 64 feet + 80 feet

PT = 144 feet

Total cost = 1.17 $ x 144 feet

Total cost = 168.48 $

The total cost of the fences was $ 168.48

6 0

3 years ago