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vovangra [49]
3 years ago
15

89% of what number is 14

Mathematics
1 answer:
MariettaO [177]3 years ago
8 0

Answer:

D: 14 = 0.89 x n; 15.7

Step-by-step explanation:

To get 89% of a number you have to multiply that number by 0.89

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If the given values in a right triangle are cos A =
Vlad1618 [11]
See the picture attached to better understand the problem

we know that
in the right triangle ABC
cos A=AC/AB
cos A=1/3
so
1/3=AC/AB----->AB=3*AC-----> square----> AB²=9*AC²---->  equation 1

applying the Pythagoras Theorem
BC²+AC²=AB²-----> 2²+AC²=AB²---> 4+AC²=AB²----> equation 2

substitute equation 1 in equation 2
4+AC²=9*AC²----> 8*AC²=4----> AC²=1/2----> AC=√2/2
so
AB²=9*AC²----> AB²=9*(√2/2)²----> AB=(3√2)/2

the answer is
the hypotenuse is (3√2)/2

5 0
3 years ago
How many are 5 raised to 4 ???​
Licemer1 [7]

Answer:

625

Step-by-step explanation:

5⁴ = 5x5x5x5 = 625

4 0
3 years ago
What is the slope of the line containg (-2,5) and (4,-4)​
Zanzabum

Answer:

-3/2

Step-by-step explanation:

(Y2-Y1)/(X2-X1)

(-4 - 5) / (4 - (-2))

-9 / 6

Simplified: -3/2

5 0
3 years ago
1 + cot^2 x is equivalent to
zysi [14]

Answer:

csc^2x

Step-by-step explanation:

It's a trig identity where 1+cot^2x = csc^2x

6 0
2 years ago
The line above goes through points (-4,0) and (0,1). what is the equation of the line?​
mariarad [96]

Answer:

y = \frac{1}{4} x + 1

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (- 4, 0) and (x₂, y₂ ) = (0, 1)

m = \frac{1-0}{0+4} = \frac{1}{4}

Note the line crosses the y- axis at (0, 1) ⇒ c = 1

y = \frac{1}{4} x + 1 ← equation of line

5 0
3 years ago
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