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adelina 88 [10]
2 years ago
15

LOTS OF POINTS FOR HELLLP

Mathematics
2 answers:
lara31 [8.8K]2 years ago
5 0

Answer:

y = 3x+9

Step-by-step explanation:

We can use the slope intercept form

y = mx+b

where m is the slope and b is the y intercept

y = 3x +b

Substitute the point into the equation

6 = 3(-1) +b

6 = -3+b

Add 3 to each side

6+3 = -3+3+b

9 = b

y = 3x+9

Zepler [3.9K]2 years ago
5 0

Answer:

C.

Step-by-step explanation:

The answer is C. when using the formula C=2*pi*r and A=pi*r^2.

Just remember to divide the diameter by two to get the radius. If you were asked to find the radius instead of the diameter, you would simply divide 7 feet by 2 because the radius is one-half the measure of the diameter. The radius of the circle is 3.5 feet. You can also use the circumference and radius equation.

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3 years ago
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ludmilkaskok [199]

Answer:

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3 years ago
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3 years ago
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Sergio039 [100]

Answer:

The area of ∆DEF = 4.5in²

Step-by-step explanation:

From the above diagram,

∆BAC ~∆DEF

It is important to note that if two triangles are similar, the ratio of their areas is equal or equivalent to the ratio of the areas of their sides

This means for the above question, that

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Finding the scale factor k = ratio of the sides of both Triangles

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k² = (4/3)²

k² = 16/9

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Area of ∆DEF = 72/16

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Answer:

D

Step-by-step explanation:

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