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Fynjy0 [20]
3 years ago
12

Help with these math exercises, please!

Mathematics
1 answer:
lions [1.4K]3 years ago
4 0
1) (3-x) x (3+x)

2) 5(5-x) x (5+x)

3) (3v-wy) x (3v+wy)

4) 2(k-m) x (k+m) x (k^2+m^2)

5) (ab-4c) x (ab+4c)

Brainliest?
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Max was on vacation twice as long as Jared and half as long as Wesley. The boys were on vacation a total of 3 weeks. How many da
GuDViN [60]
Lets say W=Wesley, M=Max, and J=Jared.
So your equations are M=2J, 2M=W, and M+J+W=21days(3 weeks)
So substituting M and W into M+J+W=21 gives you 2J+J+2M=21, substitute M again, to get 2J+J+4J=21 so you get 7J=21 so J= 3 days. Using J=3, substitute in to find M, using M=2J, so M=2(3) so M=6 and using that, substitute into 2M=W, so 2(6)=W so W=12. And 12+6+3=21 to check.

6 0
4 years ago
What is the value of s in the equation 4(2s − 1) = 7s + 12? (4 points)
notka56 [123]

Answer:

B) 16

8s-4=7s+12

s-4=12

s=16

3 0
3 years ago
Read 2 more answers
Jamahl Jones earned $20.50 cutting grass, $16.50 babysitting, and $4.95 selling two baseball cards. He puts
Arisa [49]
It’s would be C $31.95
8 0
3 years ago
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3/4√5-√3 + 2/4√5+√3 =b√3+a√5 find the value of b and a
Zielflug [23.3K]

Answer:

a = 5 / 4

b = 0

Step-by-step explanation:

3/4√5 - √3 + 2/4√5 + √3 = b√3 + a√5

3/4√5 + 2/4√5 + √3 - √3 = b√3 + a√5

5/4√5 + 0 = b√3 + a√5

0 + 5/4√5 = b√3 + a√5

b√3 = 0

b = 0 / √3

b = 0

a√5 = 5/4√5

a = 5/4√5 / √5

a = 5 / 4

3 0
3 years ago
Please help me on this
Alex777 [14]

Answer:

x^3-9x^2+28x-60

Step-by-step explanation:

(x-5)(x+2)(x-6) = (x^2-3x+10)(x-6) = x^3-9x^2+28x-60

6 0
3 years ago
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