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mylen [45]
3 years ago
7

How to expand (X+8) (X+3)

Mathematics
2 answers:
Wewaii [24]3 years ago
6 0
(a+b)(c+d)=ac+ad+bc+bd\\\\(x+8)(x+3)=x\cdot x+3\cdot x+8\cdot x+8\cdot3\\\\=x^2+3x+8x+24=x^2+11x+24
evablogger [386]3 years ago
4 0
Multiply everything in first bracket with the wats in the second so x*x = x^2 and x*3= 3x and 8*x=8x and 8*3= 24.
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Solve this equation 23x−15x=x−1
Komok [63]

Answer:

x = 1/7

Step-by-step explanation:

23x - 15x = x-1

8x = x - 1

8x - x = 1

7x = 1

x = 1/7

6 0
2 years ago
Zeolite organized a canned food drive. She worked a total of 12 2/3 hours. She worked 3 1/6 hours each day that she worked. How
galina1969 [7]
She worked 4 days on the food drive because to do math with these two fractions, you have to give them the same denominator. So, 12 2/3 becomes 12 4/6. Then, how many times does 3 go into 12? 4 times so the answer is 4. Hope this helped :)
7 0
3 years ago
A power line is to be constructed from a power station at point A to an island at point C, which is 1 mi directly out in the wat
navik [9.2K]

Answer:

<u>Given :</u>

length offshore = CS=√(1+X^2)

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onshore length = 4-X

laying cost = 3000(4-X)

total cost:

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DC/DX

= [5000*(0.5)*2X/{√(1+X^2)}]-3000=0... for optimum

5000X=3000√(1+X^2)

25X^2=3+3X^2

22X^2=3

X=√(3/22)

= 0.3693 miles

So, it would be laid offshore to S in a manner that

BS=X=0.3693 miles

Onshore=4-0.3693

=3.6307 miles

7 0
3 years ago
A blue whale swims at -26.3 meters. A bald eagle flies at 17.8 meters.
zvonat [6]
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6 0
2 years ago
On one of the day you went to the gym, the ratio of men to women was 3 : 2.
balu736 [363]

Answer

Find out the  how many women were there .

To prove

Let us assume that the x is the scalar multiple of men and women.

As given

The ratio of men to women was 3 : 2.

Than

The total number of men = 3x

The total number of women = 2x

As given

If 120 men used the gym.

thus

120 = 3x

x = \frac{120}{3}

x = 40

The total number of women = 2 × 40

                                               = 80

Therefore 80 women were there in the gym .




5 0
3 years ago
Read 2 more answers
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