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fgiga [73]
3 years ago
5

PLZ HELP ASAP (Algebra)

Mathematics
1 answer:
Cerrena [4.2K]3 years ago
8 0

Answer:

Step-by-step explanation:

Whenever you add two number x and -x and it becomes 0 . IT is the identity property.

Ex:

-1/3 + 1/3 = 0

-1 + 1 = 0

-58 + 58 = 0

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8/x=14/7 what does x equal
Veronika [31]

Answer:

when you have two fractions that equal each other you want to solve by using cross multiply

What cross multiply is, is when you multiply diagonally so:

8/x=14/7

you would take 14*x and 8*7

14x=56 (you would then divide each side by 14)

x=4 (14/14=1, 56/14=4)

8/4=14/7

To check your work you could simplify

8/4=2

14/7=2

2=2, which is true

x=4

Hope this helps ;)

6 0
3 years ago
What is the area of a rectangle that has a perimeter of 87.20?
harkovskaia [24]
The answer is 43.6 your welcome 87.20 divided by two is 43.6.
5 0
3 years ago
a triangle has two angles that measure 47° and 67° what is the measure of the third angle in this triangle
Anna007 [38]
The answer to your math question is 66°.
Adding 47° and 67° is 114°.
Subtracting 114° from 180° equals 66°.
4 0
3 years ago
Find f (2b^2) for (x)=x^2-4x
BlackZzzverrR [31]

Answer:

A

Step-by-step explanation:

We are given the function:

f(x) = x^2 - 4x

And we want to find:

\displaystyle f(2b^2)

Substitute:

\displaystyle f(2b^2) =(2b^2)^2 -4(2b^2)

And evaluate:

\displaystyle \begin{aligned}  f(2b^2) &=(2b^2)^2 -4(2b^2) \\ &=(4b^4) +(-8b^2) \\ &= 4b^4 - 8b^2 \end{aligned}

In conclusion, our answer is A.

7 0
3 years ago
Which statements describes this trapozoid?
Anna11 [10]

A trapezoid/trapezium is a quadrilateral (4 sided shape) with exactly one pair of parallel sides.

It is a quadrilateral (a closed plane shape with four linear sides) that has at least one pair of parallel lines for sides

4 0
3 years ago
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