3 years ago

Another question I need help with!!

Mathematics

1 answer:

Greeley [361]3 years ago

7 0

Answer:

The answer would be the first one

Step-by-step explanation:

tell me if im wrong

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The slope goes through (2,5) and (7,r) and equals 1/3 what is r

myrzilka [38]

The fromula of a slope:

$m=\dfrac{y_2-y_1}{x_2-x_1}$

We have

$(2,\ 5);\ (7,\ r),\ m=\dfrac{1}{3}$

Substitute:

$\dfrac{r-5}{7-2}=\dfrac{1}{3}\\\\\dfrac{r-5}{5}=\dfrac{1}{3}\qquad|\text{cross multiply}\\\\3(r-5)=(5)(1)\qquad|\text{use distributive property}\\\\3r-15=5\qquad|\text{add 15 to both sides}\\\\3r=20\qquad|\text{divide both sides by 3}\\\\r=\dfrac{20}{3}$

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4 years ago

My sister needs help with this please someone help her

olga2289 [7]

Answer:

1/5 ; 1.64

Step-by-step explanation:

Cara used 1.64 pints of blue paint or 1/5 of 8.2.

3 0

3 years ago

Read 2 more answers

I need help with this

Nataly_w [17]

Answer: 72 units^2

Explanation:
Triangle to the left, you do 5(6) and get 30, but since it's a triangle, you divide by 2 and get 15. Middle rectangle, 6(8) is 48. Right triangle, 3(6) is 18, 18/2 is 9. Add them all up 15+48+9 and you get 72. Hope this helped!

6 0

3 years ago

Given: AD = BC and AD || BC<br> Prove: ABCD is a parallelogram.

Leona [35]

Step-by-step explanation:

pls check your answer I hope u can understand