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Ilya [14]
2 years ago
11

Consider this equation.

Mathematics
1 answer:
AnnyKZ [126]2 years ago
7 0

Answer:

I know u saw me before but the answer is B hope it helps! =)

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The height of a triangle is 3cm less than twice the base. The area is 10cm2
Kamila [148]

Answer:

The base is 4cm and the height is 5cm.

Step-by-step explanation:

This is a solve the system question. Call H the height of the triangle and B the base. The question tells us:

H=2B-3

and

\frac{B \times H}{2}=10

Sub the first equation into the second (as H is already isolated). You will end up with a quadratic equation - solve that any way you wish (e.g. quadratic formula). I've provided the factored form below which shows you the roots:

\frac{B(2B-3)}{2}=10\\\frac{2B^2-3B}{2}=10\\2B^2-3B=20\\2B^2-3B-20=0\\(2B+5)(B-4)=0\\B= - \frac{5}{2},4

In this question, we take B=4. You can't have a negative side length so the other answer is eliminated. Now sub the value for B into either of the original equations. I'll use the first, again because H is already isolated:

H=2(4)-3\\H=8-3\\H=5

3 0
3 years ago
Suppose that y varies inversely with x. Use the information to find k, and then choose the equation of variation. X= 2.5 when y=
puteri [66]

Answer:constant of variation(k) is, 250.

Step-by-step explanation:

The inverse variation says that:

then, the equation is in the form of :

       ....[1] where, k is the constant of variation

As per the statement:

Suppose that y varies inversely with x.

then,

by definition of inverse variation we have;

When x = 2.5 and y = 100 then

Substitute these in [1] we have;

Multiply 2.5 both sides we have;

or

k = 250

⇒

Therefore, the constant of variation is, 250 and the equation we get

Read more on Brainly.com - brainly.com/question/5991656#readmore

Step-by-step explanation:

4 0
3 years ago
3x−1=1−3x. Needs to be in simpilest form.
xz_007 [3.2K]

Answer:

x= 2/6

Step-by-step explanation:

add 3x to both sides

add 1 to both sides

divide 6 to both sides to isolate x

x = 2/6

8 0
3 years ago
Is a triangle with sides of length 6 ft., 21 ft., 23 ft. a right triangle?
allochka39001 [22]

Yes It is a right triangle

Don't forget to make me the brainiest

6 0
3 years ago
Read 2 more answers
If x = 0, what is f(x)?
Tema [17]
12. hope that helps you with your homework
6 0
3 years ago
Read 2 more answers
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