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jeka57 [31]
3 years ago
9

7th grade math help me pleasee

Mathematics
2 answers:
OverLord2011 [107]3 years ago
5 0

Answer:

3) -11 + 11

Step-by-step explanation:

-11+11=0

Arisa [49]3 years ago
4 0

In  3, The number cancel out each other resulting in zero

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The area of a squared lawn and rectangular vegetable garden are equal.The perimeter of lawn is 24 m and its side is twice the br
rjkz [21]

Answer:

g=12

Step-by-step explanation:

4(2y)=24

8y=24

y =  \frac{24}{8}

y=3

{4y}^{2}  = yg

Since we know the value of y we substitude

{4 \times 3}^{2}  = 3g

36=3g

g=12

6 0
2 years ago
Which of the following is equivalent to (x-3)(x^2-2x-3)
Thepotemich [5.8K]
What is the following
7 0
3 years ago
PLEASE HELP I WILL GIVE BRAINLIEST
OLga [1]

Answer:

$67

Step-by-step explanation:

So 5x12+7=C

PEDMAS so:

5x12 = 60

60+7 = 67

67 = C

8 0
2 years ago
Please help ASAP!!! Thank you so much!!! Just want confirm my answer it is y=150x-50. A concession stand at a football game took
jekas [21]

Answer: You have the correct answer. It is y = 150x-50

Nice work on getting the correct answer. For anyone curious, the explanation is below.

=============================================

x = number of hours the stand is open

y = amount earned

(1,100) is from the fact the stand is open 1 hour and earns $100

(3,400) is due to the stand earning $400 after 3 hours.

Slope Formula

m = (y2 - y1)/(x2 - x1)

m = (400-100)/(3-1)

m = 300/2

m = 150 is the slope, and it is the amount earned per hour. It is the rate of change.

Use m = 150 and (x,y) = (1,100) to find the value of b as shown below

y = mx+b

100 = 150(1) + b

100 = 150 + b

100-150 = b

-50 = b

b = -50 is the y intercept and it is the starting amount they earn. The negative earning indicates that they spent $50 to set up the stand, which is the cost of buying the food, equipment, etc.

So we have m = 150 as the slope and b =  -50 as the y intercept.

Therefore, y = mx+b turns into y = 150x-50.

-------

As a check, plugging in x = 1 should lead to y = 100

y = 150x-50

y = 150(1)-50

y = 150-50

y = 100 and indeed it does

The same should be the case with (3,400). Plug in x = 3 and we should get y = 400

y = 150x-50

y = 150(3)-50

y = 450-50

y = 400, we have confirmed the answer by showing that the line y = 150x-50 goes through the two points (1,100) and (3,400).

3 0
2 years ago
60% of what is 3. .
jasenka [17]

Answer:

5

Step-by-step explanation:

3 ÷ 0.6 = 5

7 0
3 years ago
Read 2 more answers
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