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olganol [36]
3 years ago
10

Select the expression that makes the equation true.

Mathematics
1 answer:
svetoff [14.1K]3 years ago
4 0

Answer:

a.) -18 x 10^6

Step-by-step explanation:

multiply 9 x-2

add exponents 9 and -3

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The answer is y=3x/7 +4
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A right triangle has an area of 50 square inches. If the triangle is an isosceles triangle, what are the lengths of the legs of
Fed [463]
<span>If this is an isosceles triangle, then it has two 45 degree angles corresponding to two legs of equal length.  Orient the base of this triangle so that it's horizontal, and represent its length by b.  Let h represent the height of the triangle.  Then the area of this right triangle is 50 square inches = (1/2)(b)(h), or A = (b/2)h = 50 in^2.   

Due to the 45 degree angles, the height of this triangle is equal to half the base, or h = b/2.  Thus, (b/2)h = 50 becomes (b/2)(b/2) = 50, or b^2=200. Thus, b = 10sqrt(2), and h=(1/2)(10 sqrt(2)), or h = 5sqrt(2).

The length of one of the legs is the sqrt of  [5sqrt(2)]^2+[5sqrt(2)]^2, or

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4 0
3 years ago
PLEASE HELP ME!!! The sum of two numbers is 46. When 30 is subtracted from 5 times the smaller the result is 3 times the larger.
Ipatiy [6.2K]

Answer:

m = 21

n= 25

Step-by-step explanation:

the equations are:

n + m= 46

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plz vote brainliest :)

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Find the real solutions of the equati<br> √7x+1 - √x-5 = 6
Juliette [100K]

The solution of this equation is x = 5 and   x = 9.

<h3>What is the solution?</h3>

Let us recall that what we have here is a radical equation as follows;

√7x+1 - √x-5 = 6

When we isolate we have';

 √7x+1 = √x-5+6

Taking the square of both sides;

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Hence;

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-12√x-5 = -7x-1+x-5+36

12√x-5 = 6x-30

Raising this equation to power 2

144x-720 = 36x^2-360x+900

When we rearrange we obtain;

36x2  - 504x  + 1620 = 0

Hence;

x = 5 and   x = 9

Learn more about radical equation:brainly.com/question/8606917

#SPJ1

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Pls answer given in the graph for 50 points!
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Which graph ??.........

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