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2 years ago

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

2 answers:

8 0

Answer: The percents are not equal. The problem with the increase is 50 to 70 which is 20/50, which is 40%, and the percent decrease from 70 to 50 is 20/70, or 29%.

Step-by-step explanation:

Salsk061 [2.6K]2 years ago

4 0

Answer:

Step-by-step explanation:

Percent change is the difference in numbers divided by initial number converted to percent value.

Percent increase:

(70 - 50)/50*100% = 40%

Percent decrease:

(70 - 50)/70*100% = 28.57%

Compare:

40% ≠ 28.57%

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PLEASE HELP!!

madam [21]

Answer:

k=2/3

Step-by-step explanation:

Step 1:

Step 1 in solving the exponential equations is re-writing the base same as other side of the equation

so,

$25^{3k}=625\\=> 25^{3k}=25^2$

Step 2:

Second step is equating the exponents

The rule used is:

$If\ B^m=B^n\ then\ m=n$

So in this case

$3k=2\\k = \frac{2}{3}$

So the solution is:

k=2/3 ..

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3 years ago

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MakcuM [25]

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1 year ago

1. Deshawn's Bikes rents bikes for $11 plus $5 per hour, Maria paid SSI to rent a bike. For how

marysya [2.9K]

Answer8 hours

Step-by-step explanation:

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3 years ago

A ladder leans against a 22-feet-tall apple tree. The base of the ladder forms a 42° angle with the ground. Approximately how ta

igomit [66]

(D) 33 feet

Explanation:

Given:

Height of the tree, h = 22 feet

angle, θ = 42°

Length of the ladder, l = ?

We know:

sin θ = Perpendicular / hypotenuse

So,

Sin θ = height of the tree / length of the ladder

$sin 42^0 = \frac{22}{l} \\\\0.67 = \frac{22}{l} \\\\l = 32.84 feet$

l = 32.84 feet ≈ 33 feet

Therefore, the length of the ladder be to reach the top of the apple tree is 33 feet.

6 0

3 years ago

The sides of a triangle have lengths x + 3, 4(x - 13), and 3 over 4 x. The perimeter of the triangle is 3x +6. What is the lengt

nignag [31]

Answer:

shortest side = 15

Step-by-step explanation:

The question is a bit ambiguous. Do you mean (3/4) x or do you mean 3/(4x)?

I'll take it to be the first one.

(x + 3) + 4(x - 13) + (3/4)x = 3x + 6 Remove the brackets on the left

x + 3 + 4x - 52 + 0.75 x = 3x + 6 Combine

5.75x - 49 = 3x + 6 Subtract 3x from both sides.

2.75x - 49 = 6 Add 49 to both sides

2.75x = 55 Divide by 2.75

x = 55/ 2.75

x = 20

Now for the shortest side

x + 3 = 23

4(x - 13) = 4(20 - 13) = 4*7 = 28

(3/4)*20 = 15

The shortest side = 15

3 0

3 years ago