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Nana76 [90]
2 years ago
15

I will give you brainliest if you solve it

Mathematics
2 answers:
Tema [17]2 years ago
8 0

Answer:

<u>Ronald will take 6 hours to complete the 18 km race if he maintains this speed.</u>

Step-by-step explanation:

6000m in 2h = 6km in 2h

multiply by 3:

18km in 6h

Have a nice day!

rosijanka [135]2 years ago
4 0

Answer:

ok 6 hours and a kid like him cant even make a 18 kilo run

Step-by-step explanation:

3x6=18 and 2x3=6

You might be interested in
for what value of the variable the value of the expression 4(5x-8) is 4 more than the value of the expression 2(4-x)
Zigmanuir [339]

Answer:

For x=2, the expression 4(5x-8) will be 4 more than the expression 2(4-x)

Step-by-step explanation:

Given expressions are;

4(5x-8) and 2(4-x)

For 4 more than the second expression, we will add 4 with second expression.

4(5x-8) = 2(4-x) + 4

20x - 32 = 8 -2x +4

20x + 2x = 12 + 32

22x = 44

Dividing both sides by 22

\frac{22x}{22}=\frac{44}{22}\\x=2

Hence,

For x=2, the expression 4(5x-8) will be 4 more than the expression 2(4-x)

7 0
3 years ago
Solve each system of equations <br> 2x- 5y = 7<br> 3x - y = -9
Darina [25.2K]

Answer:

x = -4; y = -3

Step-by-step explanation:

2x - 5y = 7

3x - y = -9

Rewrite top equation. Multiply both sides of bottom equation by -5. Add equations. This eliminates y, and we solve for x.

         2x - 5y = 7

(+)   -15x + 5y = 45

----------------------------

      -13x         = 52

Divide both sides by -13.

x = -4

Substitute -4 for x in the first original equation and solve for y.

2x - 5y = 7

2(-4) - 5y = 7

-8 - 5y = 7

-5y = 15

y = -3

Answer: x = -4; y = -3

-5 =

8 0
3 years ago
1-4
Oksi-84 [34.3K]

Answer:

282 Hours after 6 weeks

Step-by-step explanation:

Multiply the 6 weeks and the 48 hour a week adverage and theres your answer!

3 0
2 years ago
Kelly leaves her home and cycles 4y miles south then cycles (3y + 9) miles east
atroni [7]
4y(3y + 9)
12y + 36
36 ÷ 12=x=3
7 0
2 years ago
How do work this out
BabaBlast [244]
We can factor this by using grouping. Take the leading coefficient and multiply it by the constant. In this case we get 5*-7 = -35. 

Now we need 2 numbers that add to 2 and multiply to be -35. The numbers are -5 and 7.

So split the 2r into these two terms and group.

(5r^2 - 5r) + (7r - 7)

Factor both groups.

5r(r-1) + 7(r-1)

The factors of (r-1) can be added together to get the answer.

(r-1)(5r+7)
6 0
3 years ago
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