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mina [271]
3 years ago
9

Calculate the valor of B, thx!

Mathematics
1 answer:
FinnZ [79.3K]3 years ago
6 0

Answer:

Podrias agregar mas datos porfa

Step-by-step explanation:

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Which expression is equivalent to m^2-13m-30?
sergiy2304 [10]

Answer: First option

Step-by-step explanation:

You have the quadratic equation given in the problem:

m^2-13m-30

To find an equivalent expression you cacn factorize. Find two numbers whose sum is -13 and whose product is -30.

These numbers would be -15 and 2.

Therfore, you obtain the following equivalent expression:

(m-15)(m+2)

If you don't want to apply the method above, you can use the quadratic formula:

x=\frac{-b+/-\sqrt{b^2-4ac}}{2a}

Where:

a=1\\b=-13\\c=-30

When you susbstitute values you obtain that:

x=15\\x=-2

Then you can rewrite the equation as (m-15)(m+2)

7 0
3 years ago
Read 2 more answers
If f(x)=2x+5 , determine the value of f(3x) .
makvit [3.9K]

Answer:

Step-by-step ef(x)=-2x+5……i

and f(-3x)=?

let x=-3x so that

-2x+5=-3x

x=5

substitutinx x into… i

f(x)=-10+5=-5

f(5)=-5………ii

now f(–3x)=f(-15)

scrutinizing… ii ,we can propose that

f(-15)=15.

Thus f(-3x)=15xplanation:

7 0
2 years ago
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What was the average speed of the Luna 1?
Studentka2010 [4]

Answer:

The average speed was about 6,000 kilometers (or 3,200-3,700 miles)

Step-by-step explanation:

hope this helps!

8 0
3 years ago
9/4 divided by 3/8 what the answer?
kolbaska11 [484]

Answer:

6

Step-by-step explanation:

3 0
3 years ago
Find the circumference of this circle<br>c,d,a,g,be​
zheka24 [161]

A,G,B

IDK I think thats it

4 0
3 years ago
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