3 years ago

Find the value of this expression if x = 5 and y = -1

Mathematics

1 answer:

geniusboy [140]3 years ago

8 0

Answer:

5/6

Step-by-step explanation:

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Ac=22 BC= x+41 and AB = x + 10 find x

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Draw the figure out and you will find that AB + BC = AC. Given this, put the equations together to form x+41+x+10=22. Solve to get x=-29/2

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4 years ago

In the equation W=8s+2b explain why the varable s has coefficient of 8 and the variable b a coefficient of 2

sergeinik [125]

Whatever the value of s is will be multiplied by 8 and the value of b will be multiplied by 2.

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3 years ago

The function f(r) = π determines the area of a circle in cm2, A, in terms of the radius of the circle in cm, r. a. Write a funct

ollegr [7]

Answer with Step-by-step explanation:

We are given that

a. $f(r)=\pi r^2$

$A=\pi r^2$

$r^2=\frac{A}{\pi}$

$g(A)=r=\sqrt{\frac{A}{\pi}}$

b.Radius=2.58 cm

Substitute the values in the formula and $\pi=3.14$

$f(2.58)=3.14(2.58)^2=20.9 cm^2$

Hence, the area of circle =20.9 square cm

c.Area of circle=1530 square cm

$r=\sqrt{\frac{1530}{3.14}}=22.07 cm$

Hence, the radius of circle=22.07 cm

c.Area of circle of radius 15.2 cm= $A_1=3.14(15.2)^2=725.47 cm^2$

Area of circle of radius 15.1 cm= $A_2=3.14(15.1)^2=715.95 cm^2$

$A_1-A_2=725.47-715.95=9.52 cm^2$

Hence, the area of circle whose radius is 15.2 cm is greater than the area of circle of radius 15.1 cm by 9.52 square cm .

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3 years ago

Simplify each of the following (5x+4y)(5x-4y) solve

Tju [1.3M]

Simplified :(5x+4y)(5x−4y)

=(5x+4y)(5x+−4y)

=(5x)(5x)+(5x)(−4y)+(4y)(5x)+(4y)(−4y)

=25x2−20xy+20xy−16y2

=25x2−16y2

hope this helps!

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Which of the following segments is a radius of circle O?

Harlamova29_29 [7]

I think it's RO if it's circle O

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