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3 years ago

5×(3-2)=, what is itin expanded form, Explain

Mathematics

1 answer:

Juli2301 [7.4K]3 years ago

5 0

I hope this helps you

5×(3-2)=5×1=5

or

5×3+5×(-2)=15+(-10)=15-10=5

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The more error we allow, the less precise our estimate.Therefore, as the confidence level increases, the precision of our estima

mylen [45]

Answer:

Increase

Step-by-step explanation:

Precision describes the closeness of estimates from different samples, it refers to the width of the confidence interval and can aso be described as the margin of error. While the confidence level describes the accuracy.

Going for a higher confidence level will bring about a wider confidence interval, and thus lead to a less precise estimate.

5 0

3 years ago

You can walk 4.4 feet per second. How many minutes will it take you to get to Room 117? Round your answer to the nearest hundred

OverLord2011 [107]

For this problem, I have to know the amount of distance to get to Room 117. If I do, I can give an exact answer to this problem. Through dimensional analysis, you have divide distance with speed to determine the time:

Time = Distance/Speed
Time = d/4

As long as you know the distance, when you substitute it to d in the equation, you can already answer the time.

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4 years ago

Which ordered pair is a solution to the system of inequalities?

barxatty [35]

Answer:

Step-by-step explanation:

To determine which ordered pair is a solution.

Substitute the x and y values into the inequalities.

Note that both must be true for the pair to be a solution of the system.

(4, 8)

8 > 2(4) → 8 > 8 ← False

8 > 7 ← True

(0, 0)

0 > 2(0) → 0 > 0 ← False

0 > 7 ← False

(3, 7)

7 > 2(3) → 7 > 6 ← True

7 > 7 ← False

(1, 9)

9 > 2(1) → 9 > 2 ← True

9 > 7 ← True

Thus (1, 9) is a solution to the system of equations. → D

6 0

3 years ago

[(2/3)^2]^3 X (2/3)^2 ÷ (2/3)^8

skad [1K]

Answer:

Reduce the expression, if possible, by cancelling the common factors.[(2/3)^2]^3 X (2/3)^2 ÷ (2/3)^8 = 1

Step-by-step explanation:

4/9^3 x (2/3)^2 ÷ (2/3)^8

4/9^3 x 4/9 ÷ (2/3)^8

4/9^3 x 4/9 divided by 256/6561

64/729 x 4/9 divided by 256/6561

= 1

8 0

2 years ago

A total of $8000 is invested: part at 8% and the remainder at 12%. How much is invested at each rate if the annual interest is $

inna [77]

Answer:

8% = $7750

12% = $250

Step-by-step explanation:

I P R. T.

8% X .08 .08X

12% 8000-X .12 .12(8000-X)

.08X + .12(8000-X) = 650

.08X + 960 - .12X = 650

-960 -960

.08x - .12x = -310

-.04x = -310

-.04x -.04x

X = 7750

Verify:

X = 7750

8000 - X = 250

250 + 7750 = 8000

4 0

3 years ago