3 years ago

I really really suck at math.

Mathematics

2 answers:

Bingel [31]3 years ago

6 0

Answer:

Step-by-step explanation:

a = v^2/r

ra = v^2

r = v^2/a

choli [55]3 years ago

5 0

Answer:

r=v^2/a

Step-by-step explanation:

a=v^2/r is says so

just multiply each side with r which leads us to

a*r=v^2

now divide each side with a

r=v^2/a

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Solve each equation. Showing your reasoning. X^2-6x-20=7

scoundrel [369]

Answer:

x=-3,x=9

Step-by-step explanation:

x^2-6x-20-7=0

x^2-6x-27=0

x^2-(9-3)x-27=0

x^2-9x+3x-27=0

x(x-9)+3(x-9)=0

(x+3)(x-9)=0

x=-3,x=9

4 0

3 years ago

Josie is training for a race the ratio of the number of minutes she wants to the number of miles she wants is 2043 she plans to

guajiro [1.7K]

Answer:

Josie takes 0.93 minutes to run 2 miles.

Step-by-step explanation:

We are given the following in the question:

Ratio:

Number of minutes: Number of miles = 20:43

Josie wants to run 2 miles. We have to find the number of minutes she need to run to maintain the ration.

Let x be the number of minutes Josie run.

This can be done in the following manner:

$\dfrac{20}{43} = \dfrac{x}{2}\\\\\Rightarrow x = \dfrac{20}{43}\times 2\\\\\Rightarrow x = 0.93$

Thus, Josie takes 0.93 minutes to run 2 miles.

8 0

3 years ago

Help... ANYONE PLZZZ

mote1985 [20]

First triangle:
2x+2x+x=180
x=36

second triangle:
7x+3x+90=180
x=9

third triangle:
2x+x+x=180
x=45

good luck!!

4 0

3 years ago

Read 2 more answers

Help ASAP please please please

Andre45 [30]

Answer:

3 is between 1 and 2 so A. will be the correct answer

1 x 1 = 1

2 x 2 = 4

Hope this helps

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Check my work! will give brainliest if ur right

Valentin [98]

Answer:

1) C

Step-by-step explanation:

B-BRACKETS

I-INDICES

D-DIVISION

M-MULTIPLICATION

A-ADDITTION

8 0

3 years ago