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2 years ago

14

Which is a correct first step for solving this equation? 2 + 7 = 2x + 5 - 43

2 answers:

Nina [5.8K]2 years ago

5 0

Answer:

Combine the like terms

Step-by-step explanation:

2 + 7 = 2x + 5 - 43

The first step is to combine the like terms

9 = 2x - 38

iragen [17]2 years ago

4 0

Answer:

5

Step-by-step explanation:

OMG OOPS ITS WRON WUSTION SRRY

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Nikitich [7]

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5 0

2 years ago

A large pizza has 16 slices. You eat 4 pieces and 7 chicken wings. What proportion of the pizza did you eat?

ddd [48]

Answer:

4/16

Step-by-step explanation:

You ate 4 slice of the 16 slice pizza

3 0

3 years ago

Use Hooke's Law to determine the work done by the variable force in the spring problem. A force of 450 newtons stretches a sprin

vlada-n [284]

Answer:

The work done is 202.50Nm

Step-by-step explanation:

Given

$F =450N$

$x_1 = 30cm$

$x_2 = 60cm$

Required

The work done

First, we calculate the spring constant (k)

$F = kx_1$

$450N = k *30cm$

$k = \frac{450N}{30cm}$

$k =15N/cm$

So:

$F = kx_1$

$F(x) = 15x$

The work done using Hooke's law is:

$W =\int\limits^a_b {F(x)} \, dx$

This gives:

$W =\int\limits^{60}_{30} {15x} \, dx$

Rewrite as:

$W =15\int\limits^{60}_{30} {x} \, dx$

Integrate

$W =15 \frac{x^2}{2}|\limits^{60}_{30}$

This gives:

$W =15 *\frac{60^2 - 30^2}{2}$

$W =15 *\frac{2700}{2}$

$W =15 *1350$

$W =20250N-cm$

Convert to Nm

$W =\frac{20250Nm}{100}$

$W =202.50Nm$

7 0

2 years ago

Juan builds a square dog pen that has an area of 100 square feet. He then builds a second pen that has an area of 49 square feet

EleoNora [17]

Answer:

51%

Step-by-step explanation:

Simple. 100-49=51

4 0

3 years ago

Read 2 more answers

The price of an item has been reduced by 30% . The original price was $79 .whats the price now

zvonat [6]

Answer:

$23.70

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers