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3 years ago

This is an equation.

1 answer:

3 0

Let's evaluate left side first.

There are 4 -5's and 5 -3's

So that's 4(-5) + 5(-3) = -35

So now our equation is -35 = -5x

Now divide both sides by -5:

-35 / -5 = x

7 = x

So the missing number would be 7 to make this equation true.

Final answer: 7

Hope this helps.

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In a sample of 150 cars, 18 cars failed a safety inspection. The sampling method had a margin of error of 0.02

mestny [16]

Answer:

(Lower limit, Upper limit) = (0.10, 0.14)

(Lower limit, Upper limit) = (10%, 14%)

Step-by-step explanation:

Total number of cars = 150

Cars that failed the safety inspection = 18

The proportion is given by

p = 18/150

p = 0.12

p = 12%

The confidence interval is given by

p ± margin of error

Where margin of error is 0.02

0.12 ± 0.02

Lower limit = 0.12 - 0.02

Lower limit = 0.10

Lower limit = 10%

Upper limit = 0.12 + 0.02

Upper limit = 0.14

Upper limit = 14%

(Lower limit, Upper limit) = (0.10, 0.14)

(Lower limit, Upper limit) = (10%, 14%)

7 0

2 years ago

Sam loves to read. The longest time it ever took her to finish a book was 23 hours. The shortest time was 1 hour and 5 minutes.

ehidna [41]

C 22 hours and 55 minutes

8 0

3 years ago

Read 2 more answers

Evaluate the function

Sedaia [141]

$f(0) = {4}^{3 \times 0 + 3} = {4}^{0 + 3} = {4}^{3} = 64$
The answer is above.
Additional note 1:
${4}^{3} = 4 \times 4 \times 4 = 16 \times 4 = 64$
Additional note 2:
In the answer I filled in "0" at the place where "n" was. This is because the question tells us n=0

4 0

2 years ago

Help <br> me to solve this please

Leona [35]

Answer:

for this one I think it mostly 3

3 0

2 years ago

Liam is setting up folding chairs for a meeting. If he arranges the chairs in 8 rows of the same length, he has 9 chairs left ov

Mnenie [13.5K]

8x +9 = 6x + 21 where x = number of chairs in each row
2x=12
x=6

sub back into original equation 8 x 6 + 9 =57 chairs

4 0

3 years ago