MATHEMATICS MIDDLE SCHOOL

Find the value of x.

Answers

Answer 1

Answer:

Answer:x=31

Step-by-step explanation:

the total degrees is 360 which can be cut into 2*(3x-5) + 2*(2x+30).

3x-5 +2x+30=180

5x+25=180

5x=155

x=31

to check your answer do 2*((3*31)-5) + 2*((2*31)+30) which equals 360

Answer 2

Answer: X should be 31, you can double check by plugging it in :)

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Natalie earns $2.50 for each cd she sells and $3.50 for each dvd she sells. Natalie sold 45 dvds last year. She earned a total of $780 last year selling cds and dvds.

Write an equation that can be used to determine the number of cds [c] Natalie sold last year.

How many cd's did Natalie sell last year?

Answers

45 x 3.50 = 157.50
780 - 157.50 = 622.50
622.50 / 2.50 = 249
Natalie sold 249 cds last year

Answer:

each cd she sells and $3.50 for each dvd she sells. natalie sold 45 dvds last year. she earned a total of $780 last year selling cds and dvds.

Step-by-step explanation:

5 meat loaves using 9 pounds of ground beef. 14 hamburgers using 4 pounds of ground beef. each meat loaf was made with the same amount of ground beef. which of these is closest to the amount of ground beef in each meat loaf. 1/2 Pd, 1pd, 1 1/2 Pd , 2 Pd?

Answers

1/2 pound, take 9 pounds and divide by 5 equals almost 1/2 pound

Is the gcf of a pair

Answers

A gcf is the Greastest comman factor like 4 and 8 there GCF is 4

Find x in this right triangle

Answers

Since the triangle is right angled, we may use pythagoras theorem to find the third side.

Pythagoras theorem :-

KI^2 + JI^2 = KJ^2

substituting the known values in the formula,

x^2 + 3^2 = 5^2

x^2 + 9 = 25

x^2 = 25 - 9

x^2 = 16

x = √16

x = 4

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•°• value of x is 4cm

What would the graph of y=x look like name three ordered pairs

Answers

that is called the identity line

x=y
y=x

some points are
(1,1)
(2,2)
(0,0)
(z,z)
(π,π)
as long as the 2 numbers are same, it's on the graph

it looks like a diagonal line that goes from bottom left corner to top right corner
makes 2 triangles

You borrowed $25 from your friend. You paid him back in full after 6 months. He charged $2 for interest. What was the annual simple interest rate that he charged you?

Answers

annual interest
6 months =1/2 year
so 2 dollars=1/2 of yearly interest
4 dollars is yearly

4 out of 25
4/25 =x%
percent means parts out of 100
x%=x/100
4/25=x/100
multiply both sides 100
16=x

answer is 16%

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