2 years ago

90 is 25% of what number

Mathematics

1 answer:

AysviL [449]2 years ago

5 0

360 is the answer because 90 times 4 is equal to 360

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A figure is composed of a semicircle and a right triangle. Determine the area of the shaded region. Use 3.14 for π and round to

Aliun [14]

Answer:

$A=9.5\ ft^2$

Step-by-step explanation:

we know that

The area of the shaded region is equal to the area of triangle plus the area of semicircle

$A=\frac{1}{2}bh+\frac{1}{2}\pi r^{2}$

we have

$b=4\ ft$

Find the height of the right triangle applying the Pythagorean Theorem

$5^2=h^2+4^2$

$h^2=9\\h=3\ ft$

The radius of the semicircle is half the height of triangle

$r=3/2=1.5\ ft$

substitute in the formula

$A=\frac{1}{2}(4)(3)+\frac{1}{2}(3.14)(1.5)^{2}$

$A=6+3.5=9.5\ ft^2$

5 0

2 years ago

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What are some HARD math facts that equal 100

Lelu [443]

0.10 *1000 = 100

0.2 * 500 = 100

6 0

2 years ago

Pls help this is due very soon

Viefleur [7K]

10x16 = 160 cm

160x 3.14 = 502.4 cm

502.4 ≈ 500 cm

7 0

3 years ago

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Complete the square to determine the minimum or maximum value of the function defined by the expression.

FrozenT [24]

Answer:

Option D. minimum value at −38

Step-by-step explanation:

we have

$x^{2}-12x-2$

Let

$y=x^{2}-12x-2$

Complete the square

$y+2=x^{2}-12x$

$y+2+36=(x^{2}-12x+36)$

$y+38=(x^{2}-12x+36)$

$y+38=(x-6)^{2}$

$y=(x-6)^{2}-38$ ------> equation of a vertical parabola in vertex form

The vertex is the point $(6,-38)$

The parabola open upward-----> the vertex is a minimum

therefore

minimum value at −38

3 0

3 years ago

If you randomly pick a date in april, how mny equally likely outcomes are there.

ArbitrLikvidat [17]

There are 30 days in April, so if you randomly pick a date in April there are 30 equally likely outcomes

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3 years ago