MATHEMATICS MIDDLE SCHOOL

I need help on a math problem . Thanks A BILLION BRAINLY STUDENTS !!!!!!!!!!!!!!!!!!!!!!!!!1) evaluate the expression 5x+6 for x =-2(whole #) 1/5
KEY # = number
GRADE= 7th grade
SUBJECT = math

Answers

Answer 1
Answer: 5\cdot\left(-2(1)/(5)\right)+6=\n5\cdot(-2)+5\cdot\left(-(1)/(5)\right)+6=\n-10-1+6=\n-5

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Misha has a board that is 17 1/2 inches long that he has to into 3 equal pieces.How long should each piece be?

Answers

3 is written as 3/1 so:
(17 1/2)/(3/1)
(34/2)/(3/1)
34/2*1/3
34/6
17/3
5 2/3 inches.

Hope this helps :)
17.5 (Or 1/2) divided by 3 = 5.833333333, or just 5.8. So each piece would be 5 4/5 in long.

Sorry if it's a little confusing. Hope it helped! :)

3a + b to the second power

Answers

Answer:

9a^2 + b^2

Step-by-step explanation:

(3a + b)^2

9a^2 + b^2

A bag contains 3 green marbles, 7 blue marbles ,band 2 black marbles the probility of randomly picking a green marble

Answers

first, add the total of all marbles in the bag: 3+2+7=12. this will be our denomonator. the probability is just the number of marbles in this question. there are three green marbles out of 12, and since you cannot simplify, that is your probability: 3/12

It takes a turtle 3 1/4 hours to walk 1 1/2 miles. How many hours does it take to walk one mile?

Answers

Using the principle of proportional relationship, the time taken by the turtle to walk one mile is 2.1667 hours

Creatinga systemof proportional expression :

1.5 miles = 3.25 hours - - - - (1)

1 mile = t hours ----(2)

Crossmultiply:

1.5t = (3.25 × 1)

1.5t = 3.25

Divide both sides by 1.5

t = (3.25 ÷ 1.5)

t = 2.1667 hours

Therefore, the time taken per mile is 2.1667 hours

Learn more : brainly.com/question/18405415
195min/1.5 miles so 130 min / 1 mile or 2h 10min (2 1/6h)

A TV at an electronics store originally costs $600, but it is on sale for 30% off. If a customer buying the TV has a coupon for $35.00 off of any purchase, what will her final price be on the TV

Answers

30% of the price is $180, so the result after the first drop is $420. The coupon drops another $35, so the final total is $385.

Answer:

$385

Step-by-step explanation:

Y=-3x+24x-15 in vertex form

Answers

Answer: (4,-38) i think
Y = a(x-h)^2+k
First divide factor out -3 so Y = -3(x^2-8x+5)
Then complete the square:
Y = -3(x^2-8x+16+5-16)
Y = -3(x-4)^2+33
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