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otez555 [7]
3 years ago
5

This a test and I’ve been stuck on this question I don’t understand it need help asap D:

Mathematics
2 answers:
Olegator [25]3 years ago
7 0
Plug in the distance formula
abruzzese [7]3 years ago
7 0

Answer:

try B. but im not sure at all

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If 45% of a number n is 225 what is 75% of n
Tpy6a [65]

75% of n is 375.

Step-by-step explanation:

Given,

45% of a number n = 225

We will find n first.

\frac{45}{100}n=225\\0.45n=225

Dividing both sides by 0.45

\frac{0.45n}{0.45}=\frac{225}{0.45}\\n=500

Now we have to find 75% of n.

75% of n = \frac{75}{100}*500=75*5

75% of n = 375

75% of n is 375.

Keywords: percentage, division

Learn more about percentages at:

  • brainly.com/question/3071107
  • brainly.com/question/3126500

#LearnwithBrainly

4 0
3 years ago
What is true about this linear inequality <br> y&gt;3/4-2
astraxan [27]

Inequalities help us to compare two unequal expressions. The statements that are correct are B, D, and E.

<h3>What are inequalities?</h3>

Inequalities help us to compare two unequal expressions. Also, it helps us to compare the non-equal expressions so that an equation can be formed.

It is mostly denoted by the symbol <, >, ≤, and ≥.

The complete question is:

Which statements are true about the linear inequality y >3/4 x – 2? Check all that apply.

-The slope of the line is –2.

-The graph of y >3/4 x – 2 is a dashed line.

-The area below the line is shaded.

-One solution to the inequality is (0, 0).

-The graph intercepts the y-axis at (0, –2)

-The slope of the line is 3/4. Thus, the first statement is false.

-The graph of y >3/4 x – 2 is a dashed line. The given statement is true.

-The area below the line is shaded. The statement is false.

-One solution to the inequality is (0, 0). The given statement is true.

-The graph intercepts the y-axis at (0, –2) The statement is true.

Hence, the statements that are correct are B, D, and E.

Learn more about Inequality:

brainly.com/question/19491153

#SPJ1

5 0
2 years ago
Frank works at a convenience store. He earns 7.50 per hour when he works during the day. He earns 12.50 per hour when he works a
fredd [130]

Answer:

7.50x + 12.50y = 300

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
What are the surface area and volume ratios of a cylinder change if the radius and height are multiplied by 5/4 ?
victus00 [196]

Answer:

The ratio of the surface areas and volume is 8((5y+5x) /25xy)

Step-by-step explanation:

This problem bothers on the mensuration of solid shapes.

Let us assume that the radius =x

Radius r=5x/4

And the height =y

Height h= 5y/4

We know that the total surface area of a cylinder is

A total = 2πrh+2πr²

We can factor out 2πr

A total = 2πr(h+r)

The volume of a cylinder is given as

v= πr²h

The surface area and volume ratios

Can be expressed as

2πr(h+r)/πr²h= 2(h+r)/rh

= (2h+2r)/rh= 2h/rh + 2r/rh

= 2/r + 2/h

= 2(1/r + 1/h)

Substituting our value of x and y

For radius and height we have

= 2(1/5x/4 + 1/5y/4)

=2(4/5x + 4/5y)

=2*4(1/5x + 1/5y)

= 8 (5y+5x/25xy)

6 0
3 years ago
Read 2 more answers
Solve k^2 + 13k + 30 = 0
kogti [31]
K² + 13k + 30 = 0

This is a quadratic equation. Let's attempt solving it by factorization.

Coefficient of k² = 1, last term = 30

Multiply these two together 1*30 = 30

We think of two numbers that multiply to give 30 and add to give the middle term 13.

The two numbers are 3 and 10.

3*10 = 30,   3 + 10 = 13.

we replace the 13k with 3k + 10k

 k² + 13k + 30 = 0

k² + 3k + 10k + 30 = 0

k(k + 3) + 10(k + 3) = 0

(k + 3)(k + 10) = 0

(k + 3) = 0 or  (k + 10) = 0

k = 0 - 3  or  k = 0 - 10

k = -3, or -10

I hope this helps.
4 0
4 years ago
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