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Varvara68 [4.7K]
3 years ago
8

2(15+3m)-7 Plz explain and answer

Mathematics
2 answers:
Alekssandra [29.7K]3 years ago
4 0
6m+23

You have to use distributive property, so 15x2=30 and 2x3m= 6m. You then subtract 30 from 7 and get 23. 


Fiesta28 [93]3 years ago
4 0
6m+23

You have to use distributive property, so 15x2=30 and 2x3m= 6m. You then subtract 30 from 7 and get 23.
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Simplify each radical expression. sqrt 7 ( sqrt 14 + sqrt 3 )
defon

sqrt 7 ( sqrt 14 + sqrt 3 )

distribute

sqrt(7) sqrt(14) +sqrt(7) *sqrt(3)

sqrt(98) + sqrt(21)

sqrt(49*2) + sqrt(21)

sqrt(49) * sqrt(2) + sqrt(21)

7sqrt(2) + sqrt(21)

5 0
3 years ago
Solve 2 ÷ x =5
Volgvan
So to help with the first one
2 / x = 5
multiply the x on both sides
2 = 5x
divide by 5 to isolate the x
2/5 = x

For the second one
We will use the diamond to help us find the common factor 
  \   1  /
   \    / 
    \  / 
 2 /  \   4
   / 3 \
  /      \

1) the product
2) and 4) the two numbers
and 3) is sum

10 is the product and -7 is the sum
so what two numbers (factors of 10)
will equal -7 when added

so we have these numbers that will equal the product of +10 and we will need to find the ones that will equal -7 as the sum
10*1, 2*5, -1*-10, -2*-5
if we add the two numbers we will find respectively
11, 7, -11, -7
As you can see that -2 + -5 = +10 and -2+-5= +10
So we have found the two numbers
now before we factor the expression looks like 
( x + a) (x + b)
and when factored looks like
x^2 + (a+b)x + (a*b)
Now we can plug in the numbers and solve to see if -2 and -5 are right
(x + -2) (x + -5)
we will factor it
x^2 +-5x + -2x + 10
x^2 + -7x + 10
so a = -2 and b = -5

Hope this helps :)
5 0
3 years ago
7th grade math!<br><br> Divide 20xy^4z^12 by 4x^3yz^24<br><br> Answer options in picture above.
luda_lava [24]

Answer:third one

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Trisha knit a total of 8 centimeters of scarf over 4 nights. How many nights will Trisha have to spend knitting in order to knit
Gnom [1K]

Answer: 6

Step-by-step explanation:

You would divide the number by the other number to get the awnser

6 0
3 years ago
Read 2 more answers
Ray UW is the angle bisector of VUT. If mVUW = (4x + 6)° and mWUT = (6x – 10)°, what is the measure of WUT? 32° 38° 48° 76°
stepan [7]
Ray UW bisect VUT it means it must be breaking them in two equal parts
VUT=VUW+WUV
and mVUW= mWUV
4x+6=6x-10
-2x=-16
x=8
mWUT=6x-10=6(8)-10=38°

Your answer is 38°


4 0
3 years ago
Read 2 more answers
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