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2 years ago

What is the solution to the equation -(5-(a+1))=9-(5-(2a-3))?

Mathematics

1 answer:

Wewaii [24]2 years ago

5 0

I know the answer. It B!

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Two trains leave towns 664 miles apart at the same time and travel toward each other. One train travels 16 mih faster than the o

Hatshy [7]

Answer:

I think that I am right. One train is traveling at 75 mph and the other train is traveling at 91 mph

Step-by-step explanation:

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5 months ago

Put 3/8, 2/5, and 0.38 from least to greatest

Vesnalui [34]

3/8=0.375
2/5=0.4
0.38=0.38

0.375<0.38<0.4

therefore: 3/8,0.38,2/5

*Remember that you can convert fractions to decimals by dividing the numerator by the denominator! This makes it much easier to compare :)

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2 years ago

Read 2 more answers

Which goes where? I will be giving brainliest. :)

IrinaK [193]

First One is the bottom one on the first column.
Second one is the top one on the first column.

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8 0

2 years ago

during a hike, 3 friends equally shared 1/2 pound of trail mix. what amount of trail mix, in pounds, did each friends recieve

VashaNatasha [74]

1/2 divided by 3 is 1/6.
So your answer is 1/6 pounds each person.

7 0

2 years ago

Read 2 more answers

the height of a triangle is 4 meters less than the base. if the area of the triangle is 6 m^2 what is the height of the triangle

inna [77]

Answer:

$2m$

Step-by-step explanation:

Alrighty let's do this.

We know that formula for the Area of a triangle is:

$A = \frac{1}{2}bh$

They give us the area as $6m^2$ , so let's include it in the equation.

$6 = \frac{1}{2}bh$

Now we reach a stage where we have 2 unknown variables! That means we can't solve it in its current state. So the idea you should have in cases like these where you have 2 or more unknown variables is, "Can I represent this one variable in terms of another variable?" In this case you can do exactly that. You can represent height in terms of length of the base. We are told the height of the triangle is 4 meters less than the base. That is telling us that $h = b-4$

So replace $h$ in the equation with $b-4$ .

You will now get:

$6 = \frac{1}{2}b(b-4)$

Now we can work towards solving. Let's get simplifying.

$12 = b(b-4)\\12 = b^2 - 4b\\$

bring everything to one side so we can make a quadratic and factor:

$0 = b^2 - 4b - 12\\0 = (b-6)(b+2)\\\\b = 6\\b\neq -2$

We get that $b=6$ .

Since we need the height of the triangle we'll need to call back on what h is. We found earlier that $h = b - 4$ , so to find h, we just sub in our b value into that.

$h = (6) - 4 = 2$

We find that $h=2$

7 0

1 year ago