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3 years ago

Is the percent increase from 50 to 70 equal to the percent decrease from 70 to 50? Explain.

Mathematics

2 answers:

PIT_PIT [208]3 years ago

6 0

Answer:

No. The amounts of change are the same, but the original amounts are different.

Nookie1986 [14]3 years ago

5 0

Answer:

Step-by-stepNo. The amounts of change are the same, but the original amounts are different. explanation:

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The total weight of a fully loaded coal truck is 4 tons. The ratio of the weight of the truck to the weight of the coal is 7:5.

Vera_Pavlovna [14]

Answer:

Step-by-step explanation:

total weight is 4 tons.

ratio of weight of truck to weight of coal is 7:5....added = 12

so 7/12 of the total weight is the truck's

and 5/12 of the total weight is the coal

7/12 of 4 tons = 7/12 * 4 = 28/12 = 2 1/3 tons <== weight of truck

5/12 of 4 tons = 5/12 * 4 = 20/12 = 1 2/3 tons <== weight of coal

8 0

3 years ago

Choose the graph which represents the solution to the inequality:<br> 3x + 8 ≥ 11

Mashutka [201]

The solution of the inequality is x ≥ 1.

Solution:

Given inequality:

$3 x+8 \geq 11$

To find the solution of the inequality:

$3 x+8 \geq 11$

Subtract 8 from both sides.

$3 x+8-8 \geq 11-8$

$3 x \geq 3$

Divide by 3 on both sides.

$$\frac{3 x}{3} \geq \frac{3}{3}$

On simplifying this, we get

$x \geq 1$

The solution of the inequality is x ≥ 1.

The graph of the solution is attached below.

8 0

3 years ago

In order to solve the following system of equations by subtraction, which of

PSYCHO15rus [73]

Answer:

option d.

Step-by-step explanation:

<em>Multiply the top equation by 3 and the bottom equation by 4.</em>

7 0

3 years ago

Find the volume of the solid of revolution formed by rotating about the x--axis the region bounded by the given curves.

hichkok12 [17]

Answer:

$2\pi(e^2-e^{-4})$

Step-by-step explanation:

We are given: $f(x)=2e^x$

So, the integral will be used to calculate the volume.

$V = \pi\int\limits^1_{-2}(2e^x)^2dx=\pi\int\limits^1_{-2}4e^{2x}dx=2\pi e^{2x}|^1_{-2} =2\pi(e^2-e^{-4})$

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4 years ago

Show how can you find the unit rate without using the models

liraira [26]

Answer:Put y over x or you can divide both numbers by x

Step-by-step explanation:

8 0

4 years ago

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