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Nadya [2.5K]
3 years ago
13

What is the greatest common factor of 42 and 63

Mathematics
1 answer:
rodikova [14]3 years ago
5 0
42|2\\21|3\\.\ 7|7\\.\ 1|\\42=2\times\fbox3\times\fbox7\\\\63|3\\21|3\\.\ 7|7\\.\ 1|\\63=\fbox3\times3\times\fbox7\\\\GCF(42;\ 63)=\fbox3\times\fbox7=\boxed{\boxed{21}}
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Solve each equation.<br> 7) 18 =-2+a<br> 8) -7= m - 12<br> 9) -8(7 + 7n)=-336<br> 10) -140=-7(-4+36)
lesya692 [45]

Answer:

7) a= 20

8) m= 5

9)n = 5

10) b = 8

Step-by-step explanation:

7) 18+2=-2+2+a

>> 20 = a >> a = 20

18 + 2 = 20 so that isolates the variable leaving a = 20

8) -7+12 = m -12+12

>>> 5 = m >> m = 5

-7 + 12 = 5 so that again isolates the variable leaving m = 5

9) <u>-8(7</u> + <u>7n</u>) = -336

>> -56+56 + -56n = -336+56

>>> -56n/-56 = -280/-56

>>>> n = 5

use distributive property, cancel out necessary numbers, isolate the variable. leaving n = 5.

10) -140 = <u>-7(-4 </u>+ <u>3b)</u>

>>  -140 = 28 - 21b >> -140-28 = -21b +28-28 ( flipped the numbers)

>>>  -168/-21 = -21b /-21

>>>> 8 = b >> b =8

Hope it helps!

5 0
3 years ago
A square has an area of 64 square units. A cube has a volume of 64 cubic units. What is the difference in the side length of the
Rina8888 [55]
The formula in solving the area of a square is Area = a² where "a" is for the length of the side. The area formula in solving a cube is Area = 6a² where "a" is for the length of its side.
Area of square = a²
64 = a²
a = 8 units

Area of cube = 6a²
64= 6a²
a = 3.27 units 

The difference of side of the square and side of the cube is shown below:
Difference = 8 - 3.27
Difference = 4.73 units.

The answer is 4.73 units.
4 0
3 years ago
Is this right? and if so. how
Murrr4er [49]
You answer is correct. For example

Even:
16+4 = 20

194+4=198


Odd:
13+4=17

235+4=239
3 0
3 years ago
Two marbles are drawn without replacement from a box with 3 white, 2 green, 2 red, and 1 blue marble. Find the probability that
Likurg_2 [28]
White       3/8
Green      2/8
Red          2/8
Blue          1/8

Blue         1/7
7 0
3 years ago
The function h(x) = 1/2 (x+3)2 +2. How is the graph of the h(x) translated from the parent graph of a quadratic function, F(x) =
Natali5045456 [20]
For this case, the parent function is given by:
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 y = (1/2) * x ^ 2&#10;
 Horizontal translations:
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 We have then:
 y = (1/2) * (x + 3) ^ 2&#10;
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 We have then:
 h (x) = (1/2) * (x + 3) ^ 2 + 2&#10;
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Vertical compression by factor of 1/2. Horizontal displacement 3 units to the left. Vertical displacement 2 units up.
3 0
3 years ago
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