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3 years ago

How much money will Gregg need to save in order to buy a video game for $40 if the sales tax is 8%?

Mathematics

2 answers:

Softa [21]3 years ago

8 0

It would most like be $43 with tax if I’m not mistaken

love history [14]3 years ago

6 0

Answer:

$43.2

Step-by-step explanation:

You need to divide 40 by 100 then multiply by 8, after that add what you get to 40.

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Factorise x squared + 4x + 3

olganol [36]

<h3>Answer: (x+1)(x+3)</h3>

===================================================

Explanation:

Let's assume it factors into (x+a)(x+b)

The goal is to find the two numbers a and b.

FOIL out (x+a)(x+b) to get x^2+(a+b)x+ab

Note how a+b is the middle term and ab is the last term.

In the original expression, 4 is the middle term and 3 is the last term.

So we need to find two numbers that

add to 4
multiply to 3

There are two ways to multiply to 3 and they are

1 times 3 = 3
-1 times -3 = -3

But only the first way has the factors add to 4. So that means a = 1 and b = 3.

Therefore (x+a)(x+b) = (x+1)(x+3)

And x^2+4x+3 = (x+1)(x+3)

8 0

3 years ago

9. Which transformation will place the trapezoid onto

galben [10]

Answer: B

The rotation will go back to the place where the trapezoid started

8 0

3 years ago

Richard has 4 1/2 ft of wood. He needs to cut the wood into 5 equal pieces. Each piece of wood will be _____?

mina [271]

Answer: 22 1/2

Step-by-step explanation: first convert 4 1/2 into a mixed # = 9/2

The divide that by 5 (mult by reciprocal)

Reciprocal is the # flipped so,

9/2 x 1/5

= 45/2

divide 45 by 2

5 0

3 years ago

A pendant is formed using a cylinder and cone. Once assembled, as shown below, the pendant is painted. How many square millimete

solmaris [256]

Surface area of cylinder is given by area of circle + area of the rectangle that curved around the cylinder

Area of the base of the cylinder = $\pi r^{2} = 8^{2} \pi =64 \pi$
Area of the cylinder 'wall' = width × length = $12$ × $2r \pi$ = $12$ × $16 \pi$ = $192 \pi$

Note that the wall of the cylinder is in the shape of a rectangle. The width of the rectangle is the height of the cylinder. The length of the rectangle is the circumference of the circle base.

Surface area of cone is given by $\pirl$ where $l$ is the slanted height of the cone

SA of cone = $\pi (8)(10)=80 \pi$

Hence total painted surface area is $80 \pi +192 \pi +64 \pi =336 \pi$

3 0

3 years ago

Read 2 more answers

Suppose someone tells you that she has a triangle with sides having lengths 2.2, 4.5, and 6.7. Is this a right triangle?

laila [671]

You can apply the Pythagorean theorem:
a^2 + b^2 = c^2
c is the longest side of the triangle
2.2^2 + 4.2^2 = 6.7^2
4.84 + 17.64 = 44.89
22.48 =/= 44.89
That is not a right triangle

6 0

3 years ago