MATHEMATICS HIGH SCHOOL

Randi needs to mow her lawn. The mixture requires 5 gallons of gas for every 2 gallons of oil. How much oil will she need for 8 gallons of gas? Your answer should be in tenths. (1 point) gallons​

Answers

Answer 1
Answer:

Answer:

3.2 gal oil

Step-by-step explanation:

Use a proportion.

5/2 = 8/x

5x = 2 × 8

5x = 16

x = 3.2

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Need help ASAP please​
Aretha had $0.85 in nickels and dimes. She has 2 more nickels than dimes. How many nickels and dimes does she have?
What is 2/5 of 20???

What is the sum of the first five terms in the series 7+12+17+..?

Answers

7 + 12 + 17 + 22 + 27 = ( 7 + 27 ) + ( 12 + 22 ) + ( 34 / 2 ) = ( 34 / 1 ) + ( 34 / 1 ) + ( 34 / 2 ) = ( 68 / 2 ) + ( 68 / 2 ) + ( 34 / 2 ) = 170 / 2 = 85 .

Th sum of the cost of dinner d a $12 tip divided equally between 3 people

Answers

12 / 3 so the answer would be 4

The work of a student to solve a set of equations is shown:Equation 1: m = 8 + 2n
Equation 2: 3m = 4 + 4n



Step 1:
−3(m) = −3(8 + 2n) [Equation 1 is multiplied by −3.]
3m = 4 + 4n [Equation 2]

Step 2:
−3m = −24 − 6n [Equation 1 in Step 1 is simplified.]
3m = 4 + 4n [Equation 2]

Step 3:
−3m + 3m = −24 − 6n + 4n [Equations in Step 2 are added.]

Step 4:
0 = −24 − 2n

Step 5:
n = −12


In which step did the student first make an error?

Step 4

Step 3

Step 2

Step 1

Answers

Answer:

Step 3

Step-by-step explanation:

Hello

the student made a mistake in the step number 3.

let´s see

in the step number 1 he multiplied by -3 in order to add this new equation with  equiation 2 and then eliminate the terms with m

Step one

-3(m)=-3(8+2n)

-3m= -24 - 6 n,  it is ok

in step two he simplified, he did it well.

in the step 3  he added the equations

 -3m = -24-6n

  3m = 4   +4n

_____________

    0   = -20-2n

he did not add properly -24+4, here , he made his first mistake.

step 4 is already wrong

continuing..to find n

0= -20-2n

20=-2n

n=-10

Have a great day

 

I think the student first made an error on step 1 because why is it multiplied by -3. To be more precise, where did the student get the -3 from?

y = 1/2x – 6 x = –4 what is the solution to the system of equations? (–8, –4) (–4, –8) (–4, 4) (4, –4)

Answers

Answer:

(-4,-8)

Step-by-step explanation:

Given :


y = (1)/(2) x -6  ---(1)


x= -4    ------(2)


Solution :

To find the solution of given system of equation we need to use the substitution method i.e. we need to substitute the value of x from equation (2)  in equation (1).


⇒y=(1)/(2) *(-4)-6


⇒y=-2-6


⇒y= -8

Thus for x =-4 we get y = -8


Hence (-4,-8) is the solution to the given system of equations .

y = 1/2 (-4) - 6 = -2 - 6 = -8
Therefore, solution is (-4, -8)

Rearrange the formula a = θr22 for θ.

Answers

a= theta r 22Theta = a/ 22r

Answer:

θ = 2A/r^2

I completed this question on USA Test Prep and got this answer

______________ is the human use of spoken or written words as a communication system. a. Syntax b. Grammar c. Language d. Vocabulary Please select the best answer from the choices provided A B C D

Answers

That would be C, language.
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