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melisa1 [442]
3 years ago
15

What does h equal? 6h-1=7h+12=

Mathematics
1 answer:
Len [333]3 years ago
5 0

Answer:

-13

Step-by-step explanation:

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Martey drew a model of the shool library
vova2212 [387]

Answer:

Q?

Step-by-step explanation:

3 0
3 years ago
Can someone help with this please?
ipn [44]

7^2=7\cdot7=49\\\\8^2=8\cdot8=64\\\\\sqrt{49}

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Which statements are true for the image below? Check all that apply.
Arlecino [84]

Answer:

its 1,3,4,and 7

Step-by-step explanation:

i just did it

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Two trains leave the station at the same, one heading west and the other east. The westbound train travels at 55 miles per hour.
Mars2501 [29]

The time that taken for the two trains is 1.2 hours.

The computation of the time taken for the two trains is shown below:

Given that

The westbound train travels 55 miles per hour.

And, the eastbound train travels 75 miles per hour.

So, the total speed is

= 55 miles per hour + 75 miles per hour

= 130 miles per hour

The distance is 156 miles

So, the time taken is

= \frac{distance}{speed}\\\\= \frac{156\ miles}{130\  miles\ per\ hour}\\\\

= 1.2 hours

Therefore we can conclude that the time that taken for the two trains is 1.2 hours.

Learn more about the speed here: brainly.com/question/21791162

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3 years ago
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the ratio of girls to boys in the sixth grade is 5:3. If there are 400 sixth graders, how many boys are there?
PilotLPTM [1.2K]

Answer:

boys = 250

girls = 150

Step-by-step explanation:

5g = 3b       eq. 1

g + b = 400       eq. 2

g = girls

b = boys

From the eq. 2

g = 400 - b

Replacing this last eq. on eq. 1:

5(400-b) = 3b

5*400 + 5*-b = 3b

2000 - 5b = 3b

2000 = 3b + 5b

2000 = 8b

2000/8 = b

250 = b

From eq. 2

g + 250 = 400

g = 400 - 250

g = 150

Check:

from eq. 1

5*150 = 3*250  = 750

3 0
2 years ago
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