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Digiron [165]
3 years ago
7

Help ???????????????????????

Mathematics
1 answer:
Likurg_2 [28]3 years ago
5 0

Answer:

I dont remember how to do this but i wish you luck, try searching on khan academy for how to do this ;)

Step-by-step explanation:

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A number + half of the number=15 what is the number?
blondinia [14]

Answer:

10

Step-by-step explanation:

let the number be n then half the number is \frac{1}{2} n, then

n + \frac{1}{2} n = 15

Multiply through by 2 to clear the fraction

2n + n = 30, that is

3n = 30 ( divide both sides by 3 )

n = 10

Thus the number is 10

8 0
3 years ago
Read 2 more answers
Find the area of the figure.
nevsk [136]

Answer:

<h2>        A = 132 cm²</h2>

Step-by-step explanation:

Area of the figure is a sum of area of rectangle 4 cm × 7 cm and trapezoid with bases of 19 cm i 7 cm and altitude of 8 cm.

Therefore:

A=7\cdot4+\dfrac{7+19}2\cdot8=28+26\cdot4=132

5 0
3 years ago
Find the volume of the large solid without the smaller solid. The solid is a right solid and is not drawn to scale. Round answer
Alexxandr [17]
To get the volume of the larger solid without the smaller solid is first you must get the volume of the larger solid and the smaller solid and this are 870.48 is the volume of the large solid then 48.6 so to get the volume without the smaller solid is you just subtract the large to the smaller, so the answer would be 821.9 cubic meter 
5 0
3 years ago
Really need help please
Anettt [7]
I am too lazy I'll explain so you find 688 minus 267 then you divide the difference by 6 and then u subtract the difference from 267x100 because that will be the total. Then u find the mean of the 94 numbers u get!
3 0
3 years ago
Help please ...........<br>number 13, 14, 15<br>​
AfilCa [17]

Answer:

13.  108 inches

14.  not similar (sides have different ratios)

15.  68

Step-by-step explanation:

13. You have two relationships between length and width:

  2L + 2W = 336 . . . . . the perimeter is 336 inches

  L/W = 9/5 . . . . . . . . . .the ratio of length to width is 9/5

Multiplying the second equation by 5/9W, we get

  5/9L = W

Now we can substitute that into the first equation to get ...

  2L +2(5/9L) = 336

Multiplying by 9 gives us ...

  18L +10L = 3024

And dividing by 28 gives ...

  3024/28 = L = 108 . . . . inches

___

14. Shortest to longest, the ratios of sides are 6 : 8 : 9 and 2 : 4 : 5. There is no value that will multiply the first ratio to give the second ratio. For example, multiplying by 1/3 gives ...

  2 : 2 2/3 : 3 . . . . <u>not</u> 2 : 4 : 5

Similar triangles have the same side ratios. These do not, so they are not similar triangles.

__

15. MP is a midsegment of triangle JKL and parallel to base JL. A midsegment is half the length of the parallel base. Then JL is twice as long as MP. JL is 68 units long.

3 0
3 years ago
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