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Softa [21]
3 years ago
10

Simplify (9r-5)-(-4r+9)

Mathematics
1 answer:
Lena [83]3 years ago
6 0

Answer:

13r - 14

Step-by-step explanation:

I don't have an explanation since I used a calculator, but, I hope this was helpful.

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What is the y-intercept Of the function Represented by the table of values belowX -2 1 2 4 7 y 15 6 3 -3 -12
Kipish [7]

Given:

The table of values.

To find:

The y-intercept of the given function.

Solution:

The table of values represents a linear function because the rate of change is constant.

Consider any two points from the given table. Let the two points are (-2,15) and (1,6). Then the equation of the linear function is

y-y_1=\dfrac{y_2-y_1}{x_2-x_1}(x-x_1)

y-15=\dfrac{6-15}{1-(-2)}(x-(-2))

y-15=\dfrac{-9}{1+2}(x+2)

y-15=\dfrac{-9}{3}(x+2)

y-15=-3(x+2)

Adding 15 on both sides, we get

y=-3x-6+15

y=-3x+9

Putting x=0, we get

y=-3(0)+9

y=0+9

y=9

The y-intercept is 9. Therefore, the correct option is C.

8 0
3 years ago
Read 2 more answers
What is the area of the following circle
Alex17521 [72]

Answer:

Area = 153.86

Step-by-step explanation:

Formula: A = \pi r^{2}

diameter (d) = 14

radius = d / 2

radius is 14 / 2 = 7

A = \pi (7)^{2}\\\pi 49\\49\pi \\49(3.14) = 153.86

8 0
1 year ago
The price of an item has risen to $276 today. Yesterday it was $115. Find the percentage increase.
Nezavi [6.7K]
Are you kidding me, bro? lol

276-115=131
131 divided by 276 = 0.47

0.47% increase
6 0
3 years ago
HELP ME PLLEEEEASE I BEG
agasfer [191]
Union = {0,1,4,8,10,16}

Intersection = {4,16}
5 0
3 years ago
Two different sized triangles have a scale factor of 2:3. If the hypotenuse ( the longest side ) of the bigger triangle measures
OlgaM077 [116]

Answer:

16 in

Step-by-step explanation:

The 3 part of the ratio represents 24 inches.

Dividing by 3 gives the value of one part of the ratio.

24 in ÷ 3 = 8 in ← value of 1 part of the ratio, thus

2 parts = 2 × 8 in = 16 in ← hypotenuse of smaller triangle

6 0
3 years ago
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