I need help with numbers 1-6

Mathematics

1 answer:

sweet-ann [11.9K]3 years ago

7 0

1) 2.7*10=27 (total number of miles ran by everyone)

4*3=12 (to find how many miles not averaged, multiply)

27-12=15 (how many miles left over for the other 6 people to run)

15/6= 2.5 (your answer)

2. 80/400= .2 (E)

3. Given:

x-5/4=-9/5

Mulitply everything by 4 to cancle it out

x-5=-36/5

add 5 to both sides

x=-11/5

4. A

5.E

6.A

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How do you do this?PLZ HELP

Alisiya [41]

3(x^2+10x+5)-5(x-k)=
3x^2+30x+15-5x+5k=
3x^2+25x+15+5k

for this to be divisible by x every term must include x or get eliminated

the problematic terms are 15 and 5k
to eliminate them they must equal 0 when added:
15+5k=0
5k=-15
k=-3

so A) -3 is the solution

5 0

4 years ago

Solve for x. write integer or simplified fraction.<br><br>22/2 = x/3

ale4655 [162]

<h3>I'll teach you how to solve 22/2 = x/3</h3>

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22/2 = x/3

Switch sides:

x/3 = 22/2

Divide the numbers 22/2:

x/3 = 11

Multiply both sides by 3: