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nordsb [41]
2 years ago
11

Need help with 7 and 8

Mathematics
1 answer:
Lostsunrise [7]2 years ago
3 0

Answer:

Step-by-step explanation

7. Find the value of Y

3X+ (8Y-102)+(2Y+6)=360

3X+(8Y+2Y)-102+6=360

3X+10Y-96=360

3X+10Y=456

10Y=456-3X

Y=1/10(456-3X)

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What is the measure of ABC?
MaRussiya [10]

Answer:

D i think

Step-by-step explanation:

3 0
2 years ago
A store sells rope by the meter. The equation p=0.8L represents the price p(in dollars) of a piece of nylon rope that is L meter
Margaret [11]

Answer:

1. $0.80 or 80 cents

2. 1.25 meters

Step-by-step explanation:

The equation p=0.8L represents the price p (in dollars) of a piece of nylon rope that is L meters long.

1. To find how much the nylon costs per meter, take L = 1 (this means you are calculating the price of a piece of nylon rope that is 1 meter long):

L=1,\\ \\p=\$0.8\cdot 1=\$0.80

2. To find how long a piece of nylon rope that costs $1.00 is, substitute into the equation p = 1:

p=1,\\ \\1=0.8L\\ \\L=\dfrac{1}{0.8}=\dfrac{10}{8}=\dfrac{5}{4}=1.25\ meters

5 0
3 years ago
Joe paid $14 for a board game. this is 70% of the original price. what was the original price?
tino4ka555 [31]

Step-by-step explanation:

It is given that Joe paid 14.00 for a board game this is 70% of the original price what is the original price.

Let the original price of board game be

X.

x * 70/100 = 14

x * 7/10 = 14

Multiply both sides by 10.

7x = 140

Divide both sides by 7.

x = 20

4 0
1 year ago
25 POINTS <br> 2 QUESTIONS!!!<br> HELP PLEASE AND THANK YOU
Alexandra [31]

1. c

2. c again hope this helps and plz mark as brainliest


7 0
3 years ago
The demand function for a product is p=30−3q where p is the price in dollars when q units are demanded. Find the level of produc
Marina86 [1]

Answer: a) Q= 5units

b) R= $75

Step-by-step explanation:

The maximum revenue is at dR/dq = 0

Revenue = price x quantity of demand = p × q

Substituting p = 30- 3q

R = (30-3q) × q

R= 30q- 3q2 (q2 = q raised to the power of 2)

dR/dq = 30- 6q = 0

6q = 30

q= 30/6= 5

q= 5 units

R = pq= 30q- 3q2

R= 30(5) - 3( 5×5)

R= 150- 75

R= $75

Goodluck...

7 0
3 years ago
Read 2 more answers
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