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Sonbull [250]
3 years ago
14

at first, the ratio of john’s money to peter’s money was 4:7 . after john spent half of his money and peter spent $60, peter had

twice the amount of money as john. how much money did john have at first?
Mathematics
1 answer:
hodyreva [135]3 years ago
4 0

Answer:

$80

Step-by-step explanation:

4x/2=2x

7x-60

7x-60=2x*2

7x-60=4x

3x=60

x=20

20*4=80

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For what value of y does 125=(1/25)^y-1
Alex777 [14]

Answer:y=-1/2

Step-by-step explanation:

125=(1/25)^(y-1)

5^3=(5^(-2))^(y-1)

5^3=5^(-2(y-1))

The same base eliminate each other we then have

3=-2(y-1)

3=-2y+2

Collect like terms

2y=2-3

2y=-1

Divide both sides by 2

2y/2=-1/2

y=-1/2

4 0
3 years ago
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Tickets at a school play cost $4 in advance or $5 at the door. Total ticket sales for an evening production were $440. If no tic
lisov135 [29]
5x=440
×=the number of tickets sold

then you woukd just divide 440÷5=88
88 tickets were sold at the door
4 0
3 years ago
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If Mark gets 150 free miles, how many miles will he be charged for with these two odometer readings: 29,582 and 30,283?
lapo4ka [179]
He will be charged for 551 miles.

30283-29582=701 miles traveled in the rental vehicle.

150 of those miles are free; 701-150 = 551 miles he will be charged for.
8 0
3 years ago
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What are m∠1 and m∠2?
zaharov [31]

Answer:

B. <1 = 35, m<2 = 30

Step-by-step explanation:

To figure out m<1 I first need to figure out the other missing angle. A straight line is a 180 degree angle. Taking that information you can do 180 - 115. This means that the missing angle is 65 degrees. The interior angles of triangles always add up to 180.

80 + 65 = 145

180 - 145 = 35

<1 = 35

Repeat with the other side.

85 + 65 = 150

180 - 150 = 30

<2 = 30

Hope this helps!

5 0
2 years ago
Which pair of ratios form a proportion?
leva [86]

Answer:

D: 5 : 8 and 20 : 32

Step-by-step explanation:

A is incorrect because 3 x 1.33 = 4 and 4 x 1.25 = 5.

B is incorrect because 10 x 1.6 = 16 and 12 x 1.5 = 18.

C is incorrect because 7 x 1.428 = 10 and 10 x 1.4 = 14.

D is correct because 5 x 4 = 20 and 8 x 4 = 32.

another way of solving the ratio answers is by putting them in a fraction 5/8 = .625 and also does 20/32 = .625.....

Easy right!?

Hope I Helped!

Please Mark me Brainliest!!!

4 0
3 years ago
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