MATHEMATICS MIDDLE SCHOOL

Can someonehelp me again lol

Answers

Answer 1

Answer:

Answer:

The answer is A and B.

Step-by-step explanation:

Answer 2

Answer: 54 and 89 are correct answers.
Hope this helps!

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a triangular shape has an area of 70 square inches the height is 8 and three fourths what is an equation for this answer
55. If 3x = 4y, the value of (x + y)^2 : (x - y)^2 is:

What is the slope and y-intercept?

Answers

slope=rise/run
yintercept is where the line crosses the y axis
y=mx+B
m=slope
b=yint
intercept at -3
y=mx-3
pick a point
(5,0)
x=5,y=0
0=m(5)-3
add 3
3=5m
divide 5
3/5=m

slope=3/5
y int=-3

A certain colony of bacteria triples in length every 10min. Its length is now 1 millimeter. how long will it be in 40min?(show work please! and in a 6th grader form)

Answers

Bacteria length = 1mm

It will triple four times by 40 min.

This can be shown as 3 to the power of 4; 3⁴ = 81

Original length * growth factor = final length

1 mm * 81 = final length

81 = final length

After 40 mins, the bacteria colony will be 81 mm in length.

Think of it this way. Every ten minutes, its length is multiplied by 3.

After 10 minutes, it will be 3 ml long.
After 20 minutes, it will be 9 ml long.
After 30 minutes, it will be 27 ml long.
After 40 minutes, it will be 81ml long.

In other words, 1x3x3x3x3=81

What is 0.97333... as a fraction

Answers

$x=0.97\overline{3}\n100x=97.\overline{3}\n1000x=973.\overline{3}\n1000x-100x=973.\overline{3}-97.\overline{3}\n900x=876\nx=(876)/(900)=(73)/(75)$

the answer is 73/75 :)

Which equation is represented by the table? x y (x, y)
0 –1 (0, –1)
1 4 (1, 4)
2 9 (2, 9)

A.
y = 5x – 1

B.
y = –3x + 3

C.
y = 3x – 4

D.
y = 3x + 3

Answers

i would say C.
y= 3x - 4

Write an equivalent expression for 8+7y+2x+4y+4

Answers

An equivalent expression would be 12 + 11y + 2x

Alex spent 25% of his money on a sports drink. Then he spent 25% of the remaining money on trail mix. He has $9 left. How much money did Alex begin with?

Answers

If Alex has spent two lots of 25%, this is equal to 50%, which means he has spent half of his money. If he has $9 left, this means that he has spent $9, meaning that he started with $18. Hope this helps :)