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stira [4]
3 years ago
8

Please explain clearly

Mathematics
1 answer:
skad [1K]3 years ago
3 0
The solution to the question
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Marvin is buying a watch from his brother
Vladimir79 [104]

Answer:

140 = 40 + 10x

Step-by-step explanation:

The watch is 140 in total. He can pay 40 dollars currently. 10x is the amount of payments there are. How much he can pay with each payment (10x) is unknown so that is why there is the variable.

6 0
3 years ago
5/6y+1= -1/2y+1/4 please help thank you cutie ahbhahhhahaha
sweet [91]

Answer: -9/16

Step-by-step explanation:

10y+12=-6y+3

16y=-9

Y=-9/16

3 0
3 years ago
What is the surface area of a cylinder with a diameter of 8 centimeters and a height of 12 centimeters?
Lostsunrise [7]
The formula for this is A=2 \pi rh+2 \pi  r^{2}.  If the diameter is 8 the radius is 4, so filling in accordingly we have A=2 \pi (4)(12)+2 \pi (16) and A=96 \pi +32 \pi which is A=128 \pi and when you multiply in 3.14 you get that A = 401.92 or B above.
8 0
4 years ago
The total weight of three tins of beans and four jars of jam is 2080g.
ELEN [110]

Lets represent a tin of beans as b\\ and a jar of jam as j\\.

Therefore

3b+4j=2080 and 5b=2000.

Now we can say that b=400.

Substitute b in 3b+4j=2080 for 400.

3*400+4j=2080

Simplify

1200+4j=2080

4j=880

j=220.

Therefore

1 tin of beans is 400 grams and 1 jar of jam is 220 grams.

5 0
3 years ago
For your trip to Austin you know you are going to travel 182 miles and your car can do that in 14 gallons. How far can your car
AnnyKZ [126]
First, you need to create a unit rate.
The car travels 182 miles on 14 gallons of gas.
To create a unit rate, you would have to divide 14 by 182.

182 mi 13 mi
———— = ———-
14 gal 1 gal

Then, you would need to multiply the numerator and denominator by 8 because the question is asking how far the car can travel on 8 gallons of gas.

13 mi x 8 104 mi
——— = ————
1 gal x 8 8 gal

So, your answer is the car travels 104 miles on 8 gallons of gas.
7 0
3 years ago
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