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3 years ago

HELLLLLLPPPP PLEASEEEEEEEEEEE

Mathematics

1 answer:

dalvyx [7]3 years ago

8 0

What I’m I supposed to be looking for??

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Find the area of a circle whose radius is<br> 52 km. Round to nearest tenth

goblinko [34]

Answer:

8494.87 is the actual answer but the rounded version is 8494.9

7 0

3 years ago

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WILL MARK BRAINLIEST ASAP!!

7nadin3 [17]

$\dfrac{x^2+ax-4}{x+2}+\dfrac{x+b}{x+2}=\dfrac{x^2+ax-4+x+b}{x+2}=\dfrac{x^2+(a+1)x+(b-4)}{x+2}\\\\\dfrac{x^2+(a+1)x+(b-4)}{x+2}=x+1\\\\\dfrac{x^2+(a+1)x+(b-4)}{x+2}=\dfrac{(x+1)(x+2)}{x+2}\\\\\dfrac{x^2+(a+1)x+(b-4)}{x+2}=\dfrac{(x)(x)+(x)(2)+(1)(x)+(1)(2)}{x+2}\\\\\dfrac{x^2+(a+1)x+(b-4)}{x+2}=\dfrac{x^2+2x+x+2}{x+2}\\\\\dfrac{x^2+(a+1)x+(b-4)}{x+2}=\dfrac{x^2+3x+2}{x+2}\iff a+1=3\ \wedge\ b-4=2\\\\\boxed{a=2\ \wedge\ b=6}$

3 0

3 years ago

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The sides of a rhombus with angle of 60° are 6 inches. find the area of the rhombus. 9√3 in2 18√3 in2 36 in2

harina [27]

Drop a perpendicular from an obtuse vertex.

That makes a 30 - 60º right triangle, with

hypotenuse 6 and short leg 3. So the long leg,

which is the height of the rhombus, is 3√3 .

Since a rhombus is a parallelogram, its area

is base x height = 6 x 3√3 = 18√3 .

4 0

3 years ago

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Junior's box of animal crackers contains ten elephants, ten monkeys, ten zebras, and ten lions. Without looking, Junior grabs on

Anit [1.1K]

Answer:

3/52

Step-by-step explanation:

10/40 x 9/39 = 3/52

4 0

3 years ago

Xcel energy uses the equation c (x) =7.1+23logx to determine the cost of electricity for x hours. A. What would the function c^-

Sergeeva-Olga [200]

Answer:

Step-by-step explanation:

Note that the cost function is $c(x) = 7.1+23\ln(x)$ , which gives us the cost of electricity for x hours of consumption

a). The function $c^{-1}(x)[tex] which is the inverse function, tells us given a cost, the amount of hours we can consume electricty. b) Consider the equation [tex]y=7.1+23\ln(x)$

To find out the inverse function, we interchange the labels of x and y and solve for y, that is

$x = 7.1+23\ln(y)$

when solved for y we have

$e^{\frac{x-7.1}{23}}= y$

So the inverse function is given by $c^{-1}(x) = e^{\frac{x-7.1}{23}}$ .

c) We will use the inverse function to find the amount of hours the customer can use eelectricity. It is simple obtained by evaluating the inverse function at the desired cost (i.e $c^{-1}(15)$ )

that is

$e^{\frac{15-7.1}{23}} = 1.409$

that is, the custome can consume at most 1.41 hours of electricity.

7 0

2 years ago

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