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Mnenie [13.5K]
3 years ago
13

Please tel me the answer to 17- ? =12

Mathematics
1 answer:
Volgvan3 years ago
7 0

Answer:

5

Step-by-step explanation:

17 - ? = 12

-? = 12 - 17

-? = -5

? = 5

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The answer is 36 units squared
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3 years ago
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
Terrance picked 54 apples. He kept a apples for himself and gave each of 6 friends an equal number of apples. How many apples di
pentagon [3]

we are given

total number of apples =54

Let's assume each friend receives =x

He kept a apples for himself and gave each of 6 friends an equal number of apples

so, we will get equation as

6x=54

now, we can solve for x

x=9

each friend receives is 9 apples.........Answer

3 0
3 years ago
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BigorU [14]
The answer should be acute and scalene. Sorry if I’m wrong though
4 0
3 years ago
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Help me out asap pls! <br> For 20 points..
Sunny_sXe [5.5K]
The answer is b. 9pi because 3^2xpi=9pi.
7 0
2 years ago
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