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3 years ago

Which of the following numbers is closest to 7?

Mathematics

1 answer:

Sphinxa [80]3 years ago

7 0

Answer:

B. √50

Step-by-step explanation:

$7^{2}$ is 49 so √49 is 7

So,

since the closest number to 49 is 50, that is the answer.

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Malik buys and sells car parts. He bought two tires for $45.00 each and later sold them for $65.00 each. He bought three rims fo

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The answer is $213 because you subtract the price sold by the price he bought them for and then you add them together (see work)

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2 years ago

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2/5 of the members of a school band are 6th graders. What percent of

faust18 [17]

Answer:

60%

Step-by-step explanation:

3/5 is 60%

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2 years ago

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Solve the equation. And write all solutions in general form.

Amiraneli [1.4K]

Answer:

x = pi/2 + 2 pi n x = pi + 2 pi n where n is an integer

x = 5pi /3 + 2 pi n

Step-by-step explanation:

8 cos^2 x + 4 cos x-4 = 0

Divide by 4

2 cos^2 x + cos x-1 = 0

Let u = cos x

2 u^2 +u -1 =0

Factor

(2u -1) ( u+1) = 0

Using the zero product property

2u-1 =0 u+1 =0

u = 1/2 u = -1

Substitute cosx for u

cos x = 1/2 cos x = -1

Take the inverse cos on each side

cos ^-1(cos x) = cos ^-1(1/2) cos ^-1( cos x) =cos ^-1( -1)

x = pi/2 + 2 pi n x = pi + 2 pi n where n is an integer

x = 5pi /3 + 2 pi n

8 0

3 years ago

Find the area of this figure (50 points)

Softa [21]

Answer:

$A_{total} = 14\ in^2$

Step-by-step explanation:

Step 1: Determine the area of the left rectangle

We can tell that the total shape seems like two rectangles glued together. We can separate the left rectangle and determine the area of it and then determine the area of the right rectangle and combine them. Lets first solve the left rectangle.

$A = l * w$

$A_{left\ rectangle} = 2\ in * 4\ in$

$A_{left\ rectangle} = 8\ in^2$

Step 2: Determine the area of the right rectangle

$A = l * w$

$A_{right\ rectangle} = 3\ in * 2\ in$

$A_{right\ rectangle} = 6\ in^2$

Step 3: Determine the total area

$A_{total}=A_{left\ rectangle} + A_{right\ rectangle}$

$A_{total} = 8\ in^2 + 6\ in^2$

$A_{total} = 14\ in^2$

Answer: $A_{total} = 14\ in^2$

4 0

2 years ago

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Please help me solve this question.

astraxan [27]

Answer:

ZXY = KXH by reason SAA

Step-by-step explanation:

I believe that is the answer.

also, SAA stands for Side, Angle, Angle

It could also be AAS

Either one is right.

AAS or SAA

6 0

2 years ago