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Ilya [14]
3 years ago
11

Help me PLZZZZZZZ!!!!!!

Mathematics
1 answer:
eduard3 years ago
7 0

Answer:

25% decrease

Step-by-step explanation:

Take the original amount of books and subtract the new number of books

20 -15 = 5

Divide by the original amount of books

5/20 = .25

Multiply by 100%

25%

It is a decrease since the amount went down

25% decrease

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One fourth of a number plus 3 gives 4. The number is:
Triss [41]
The number would be 4
5 0
3 years ago
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Determine the discount between the point(-4,2) and the line 4y=3×+6​
Savatey [412]

Answer:

d = 14/5

Step-by-step explanation:

The point (-4,2) means that;

At x = -4, y = 2

Now general form of a linear equation is;

Ax + By + C = 0

We are given;

4y = 3x + 6​

Rearranging to the form of a linear equation gives;

3x - 4y + 6 = 0

Thus, A = 3, B = -4 and C = 6

Thus, at point (-4,2), distance between them is;

d = (3(-4) - 4(2) + 6)/√(3² + (-4)²)

d = -14/5

We will take the absolute value.

Thus; d = 14/5

6 0
3 years ago
The cost of 3 scarves is $26.25. What is the unit price? (cost per scarf)
Marysya12 [62]

$8.75 because 26.25 divided by 3 equals $8.75.

hope this helps

7 0
4 years ago
Alan made $396 for 18 hours of work. At the same rate, how much would he make for 11 hours of work?
wel

Answer:

Step-by-step explanation:

I think it is helpful to set this up as a proportion as it is the easiest way in my opinion.

1st step: 396/18 and x/11

This is the way you set up the proportion.

2nd Step: You would have to multiply 396 and 11 then divide the value by 18.

396x11 = 4,356

4,356/18 = 242

x=242 Dollars

Answer: 242 dollars

Therefore, Alan would make 242$ while working at the same rate for 11 hours.

8 0
3 years ago
Which of the following represents an equation of a line that has an x-intercept of 8 and a y-intercept of 2?
Julli [10]

Correct answer A) x+4y=8  ,  represents an equation of a line that has an x-intercept of 8 and a y-intercept of 2 .

<u>Step-by-step explanation:</u>

Here we have to identify Which of the following represents an equation of a line that has an x-intercept of 8 and a y-intercept of 2 .Let's find out:

A) x+4y=8

Let's check if line has an x-intercept of 8 i.e. at y=0 value of x is 8 :

⇒ x+4y=8

⇒ x+4(0)=8

⇒ x=8

Let's  check if line has an y-intercept of 2 i.e. at x=0 value of y is 2 :

⇒ x+4y=8

⇒ 0+4(y)=8

⇒ y=2

Hence , Correct option!

B) x=(-.25y+2)

Let's check if line has an x-intercept of 8 i.e. at y=0 value of x is 8 :

⇒ x=(-.25y+2)

⇒ x=(-.25(0)+2)

⇒ x=2

Incorrect option!

C) 4x+y=2

Let's check if line has an x-intercept of 8 i.e. at y=0 value of x is 8 :

⇒ 4x+y=2

⇒ 4x+0=2

⇒ x=\frac{1}{2}

Incorrect option!

D) y=-4x+8

Let's check if line has an x-intercept of 8 i.e. at y=0 value of x is 8 :

⇒ y=-4x+8

⇒ 0=-4x+8

⇒ x=2

Incorrect option!

8 0
3 years ago
Read 2 more answers
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