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lord [1]
3 years ago
8

Adam was going to sell all of his stamp collection to buy a video game. After selling half of them he changed his mind and did n

ot sell the rest. He then bought ten more, How many did he start with if he now has 31?
Mathematics
1 answer:
Roman55 [17]3 years ago
6 0
He would have 21 before he bought the 10 stamp because 31-10=21
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171 / 7.6 = 22.5 miles per gallon

22.5 x 12.5 = 281.25 miles she can drive

7 0
3 years ago
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When Henry surveyed 45 seventh-grade students at random in the school cafeteria, he found that 3 out of 15 liked reggae music. U
xxMikexx [17]
3                       x
---------= --------- ---------
15                 180

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Steps: Cross multiply to get 15x and 540. Divide both numbers by 15, then you found what x equals, which is the answer. 
4 0
3 years ago
I WILL NAME BRAINLIEST FOR WHOEVER CAN WRITE THE ANSWER! I WILL NOT GIVE IT ANYONE WHO JUST POINTS! What is the area of the figu
PtichkaEL [24]

Answer:

48.5cm^{2}

Step-by-step explanation:

This shape is actually just a rectangle with a missing triangle. We can first find the area of the rectangle with 7*8=56 and subtract the triangle.

Area of missing triangle = \frac{1}{2} *b*h (b is the base and h is the height)

Base = 8-3=5

Height = 7-4=3

Area of missing triangle = \frac{1}{2} *5*3=7.5

Area of the figure: 56-7.5=48.5

--------------------------------------------------------------------------

Alternatively, you can find the area of each individual shape and add them all up.

Area of the rectangle: 8*4=32

Area of square: (7-4)*3=9

Area of triangle: \frac{1}{2} *(8-3)*(7-4)=\frac{1}{2} *5*3=7.5

Total Area: 32+9+7.5=48.5

6 0
3 years ago
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Your new car went 258 miles on 7.3 gallons of gasoline. How many miles per gallon is this? ​
nexus9112 [7]
The car went about 35.34 miles per gallon.(How? Divide 7.3 into 257 and you got your answer.)
4 0
3 years ago
What's the answer to 1&2 plzz
Degger [83]
The first answer would be A because the volume is l*w*h so you would multiply 24 by 10 by 12 which gives you 2880 ft^3
I don't know how to do the second question. I am sorry!
3 0
3 years ago
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