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hodyreva [135]
3 years ago
14

What is the rate of change?

Mathematics
1 answer:
eduard3 years ago
4 0

Answer:

12

Step-by-step explanation:

12 +30= 42

42+12=54

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Kelly answered 3 items on a test incorrectly. This was 6% of the items. How many items were on the test?
alukav5142 [94]

Answer:

50

Step-by-step explanation:

6/100=3/y

Let y be the total number of items on the test

[cross multiply]

6×y =3×100

6y = 300

divide both sides by 6

y = 50

3 0
2 years ago
Find the value of x.<br> 65°<br> (x + 12)<br> X-53<br> X = 65<br> x-77<br> x = 103
SpyIntel [72]

Answer:

The answer is -77

Step-by-step explanation:

Hope this helped! Have a great day!

8 0
2 years ago
The measures of the three angles of a triangle are given by 1. 3x +1 2. 2x -3, and 9x. What is the measure of the smallest angle
nordsb [41]
Since the total measure of all the angles of a triangle is always 180, solve for x with the equation: 3x+1+2x-3+9x=180. x=13. Now plug in x and look for the smallest one, which will be B. 23 degrees.
4 0
2 years ago
What is the surface area of a rectangular prism that is 12cm by 3cm by 5cm?
Cerrena [4.2K]
A = 2lw + 2lh + 2hw
A = 2(12)(3) + 2(12)(5) + 2(5)(3)
A = 72 + 120 + 30
A = 222 cm squared

Hope this helps!! :)
3 0
2 years ago
What is the equation of the line that passes through the point (-3, 2) and has a<br> slope of -2/3
Mazyrski [523]

Answer:

y=-2/3x

Step-by-step explanation:

if you use the graphing calculator, the y intercept of the equation is 0 therefore y=mx

m=-2/3

the slope intercept equation is y=-2/3x

5 0
3 years ago
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