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3 years ago

Using the distrubutive proberty an experstion equvalent to 45+72

Mathematics

1 answer:

Colt1911 [192]3 years ago

3 0

solution:

$45+72\\=(9\times 5)+(9\times 8)\\=9(5+8)\\=117$

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Answer:

Where did the writer go in holiday

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2 years ago

How many odd 2-digit positive integers greater than 30 are there?

alexgriva [62]

Answer:

There are 70 two digit numbers that are greater than or equal to 30

Step-by-step explanation:

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2 years ago

Read 2 more answers

Which line shows theINITIAL error in volume work?

aliina [53]

In step 2, V = $\frac{4}{3}(3.14)(37.5)$ show the error in volume work.

Solution:

Given data:

The steps shows it is sphere.

Radius of the sphere = 12.5

The value of π = 3.14

Volume of the sphere = $\frac{4}{3} \pi r^3$

Step 1:

$$V=\frac{4}{3} (3.14)(12.5)^3$

$$V=\frac{4}{3} (3.14)(12.5)(12.5)(12.5)$

Step 2:

$$V=\frac{4}{3} (3.14)(1953.125)$

Step 3:

$$V=\frac{4}{3} (6132.81)$

Step 4:

V = 8177.08 cubic units

This is the correct solution.

But in the given options, in step 2, 12.5 is multiplied by 3.

That is not the correct step. You have to do 12.5 × 12.5 × 12.5.

Hence in step 2, V = $\frac{4}{3}(3.14)(37.5)$ show the error in volume work.

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3 years ago

Solve a=v/t for v<br> NEED HELP ASAP!!!

Sergeu [11.5K]

Answer:

$v = at$

Step-by-step explanation:

you need to cross multiple

3 0

2 years ago

A. Steven wrote an expression with 2 terms. The second term, which is the whole number 7, is subtracted from the first term. The

bulgar [2K]

Answer:

Part a)

Steve's expression is $2(2x+5)^{2}-7$

For x=3, the expression is equal to $235$

Part b)

Jasmine's expression is

$(3x^{2})+(25x)$

For x=2, the expression is equal to $62$

Step-by-step explanation:

Part a)

Let

n-----> the first term

The expression is

$(n-7)$

$n=2(2x+5)^{2}$

substitute

Steve's expression is

$2(2x+5)^{2}-7$

Evaluate for x=3

$2(2(3)+5)^{2}-7=242-7=235$

Part b)

Let

n-----> the first term

Jasmine's expression is

$(3x^{2})+(25x)$

Evaluate for x=2

$(3(2)^{2})+(25(2))=12+50=62$

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3 years ago