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2 years ago

Please help me I want to past my exams please. Please

Mathematics

2 answers:

11Alexandr11 [23.1K]2 years ago

7 0

Answer:

last option is the correct answer

LuckyWell [14K]2 years ago

7 0

Answer:

Step-by-step explanation:

The easiest way to solve this is to make all of those percentage/fractions decimals.

Our new options are:

A. 0.67

B. 0.732

C. 0.625

D. 0.79

As we can see, D is the largest out of all of these options

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What value of r gives the line passing through (3,2) and (r,-4) A SLOPE OF 3/2

IrinaVladis [17]

Answer:

(-6,-4)

Step-by-step explanation:

to get to -4 from 2 you have to subtract 6, making the slope x/6 but you said the slope is 3/2. divide 6 by 2 and you get 3. 3x3=9 making the slope 9/6. simplify and you get 3/2

4 0

3 years ago

I need help with this math problem!

tatiyna

First flip the bottom fraction:

$\frac{5t^2}{8x^2}* \frac{x^2t}{3t}$

After you simplify further you get:

3 0

4 years ago

Express the formula P=2L+2W in terms of the width,W. Use the formula to find the width when the perimeter is 70 and the length i

ozzi

Answer:

<h2>The width is 13</h2>

Step-by-step explanation:

From the question

P=2L+2W

where

L is the length

W is the width

To make W the subject move 2L to the left side of the equation

That's

2W = P - 2L

Divide both sides of 2 to make W stand alone

We have

$W = \frac{P - 2L}{2}$

when

P = 70

L = 22

W is

$W = \frac{70 - 2(22)}{2} \\ W = \frac{70 - 44}{2} \\ W = \frac{26}{2}$

We have the final answer as

Hope this helps you

5 0

3 years ago

Read 2 more answers

What are the first 6 numbers of pi

Viefleur [7K]

Step-by-step explanation:

3.141592653............

6 0

3 years ago

A county government says that a safe level of chlorine in a hot tub is within 1.75 ppm of 3.25 ppm.

Schach [20]

Answer:

Part A : <u>|x-2.5| ≤ 0.75 , x ∈ [1.75,3.5]</u>

Part B : yes, the lifeguard should add more chlorine.

Step-by-step explanation:

Part A:

Let C is the variation of the level of chlorine in a hot tub.

Level of chlorine in a hot tub is within 1.75 ppm of 3.25 ppm.

To find absolute value inequality, need to find the standard level of chlorine 1.75 + C or 3.25 - C

1.75 + C = 3.25 - C

2C = 5

C = 2.5

So, the standard level would be 2.5 ppm,

If x represents the present level of chlorine,

Then it would be lie within 1.75 ppm of 3.25 ppm.

1.75 ≤ x ≤ 3.25

Subtract 2.5 from all sides

1.75 - 2.5 ≤ x -2.5 ≤ 3.25 - 2.5

-0.75 ≤ (x-2.5) ≤ 0.75

which is equivalent to the following absolute value inequality.

<u>And the solve of the inequality : x ∈ [1.75,3.5]</u>

Part B: If x = 1.0 ppm,

∴ |1.0-2.5| = 1.5 which is not less than equal to 0.75.

Another explanation:

the minimum safe level of chlorine in a hot tub is 1.75 ppm

Since 1 < 1.75

Therefore, lifeguard should add more chlorine.

8 0

4 years ago