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Lilit [14]
3 years ago
14

Kacie bought x, number of pencils. She paid $0.91, including tax, per pencil. She gave the cashier $10 and received $6.36 back i

n change. How many pencils did she purchase?
Mathematics
2 answers:
Vikki [24]3 years ago
6 0

Answer: 4 pencils

Step-by-step explanation:

From the question, Kacie bought x, number of pencils. She paid $0.91, including tax, for a pencil and gave the cashier $10 and received $6.36 back in change.

Let the number of pencils bought be x.

Since she paid $0.91 per pencil, and gave the cashier $10 and collected $6.36 as change, this will be:

10 - 0.91x = 6.36

Collect like terms

0.91x = 10 - 6.36

0.91x = 3.64

x = 3.64/0.91

x = 4

She bought 4 pencils

wel3 years ago
4 0

Answer:

She purchased 4 pencils

Step-by-step explanation:

Here, we are to calculate the number of pencils bought given the information in the question.

The amount per pencil is $0.91. The total amount of this since she bought x number of pencils is $0.91 * x = $0.91x

Now, after paying $10, she was given $6.36 as change

what this means is that what the pencils cost is 10-6.36 = $3.64

Now we equate the cost in terms of x to this;

0.91x = 3.64

x = 3.64/0.91

x = 4 pencils

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Triangle ABCis rotated 90° clockwise around the origin to get
Elanso [62]

Answer:

The distance A’C’ is 4.47 units

Step-by-step explanation:

Before we go on, we need to get the appropriate transformation

Mathematically, we have a 90 degrees clockwise rotation yielding the following;

(x,y) to (-y,x)

A is (-4,1)

C is (-2,5)

By transforming, we have

A’( -1,-4)

C’ (-5,-2)

To get the magnitude of the line segment, we are going to use the distance formula between points

We have this as;

D = √(x2-x1)^2 + (y2-y1)^2

D = √(-5-(-1))^2 + (-2-(-4))^2

D = √(-4)^2 + (2)^2

D = √(16 + 4)

D = √20

D = 4.47 units

7 0
2 years ago
How do u solve -2 + (-3)
shtirl [24]
-5 because a negative plus a negative is a positive this is why it is the right answer
3 0
3 years ago
Please help quick will give brainliest
Snowcat [4.5K]

25t means "25 times t" where t is some unknown number. It is a placeholder for a number.

To find what the number is, we undo what is happening to t. So we divide both sides by 25 to undo the operation "multiply by 25"

----------

25*t = 1125

25*t/25 = 1125/25 divide both sides by 25

t = 45

---------

<h3>Answer: 45</h3>

As a check, we can plug t = 45 into the equation and we should get the same value on both sides

25*t = 1125

25*45 = 1125 replace every t with 45

1125 = 1125 the answer is confirmed

5 0
3 years ago
Read 2 more answers
Mike bought an MP3 player for $150. The sales-tax rate was 8 percent. How much sales tax did he pay on the MP3 player?
LenaWriter [7]
.08 x 150 = 12, He paid $12 sales tax :)
5 0
3 years ago
Read 2 more answers
PLEASE HELP ME!!! I'M BAD AT GEOMETRY!!!
7nadin3 [17]

Answer:

Manuel would be correct, the volumes would be equal.

Step-by-step explanation:

The formulae for finding the volume of pyramids and cones both include dividing three (multiplying by \frac{1}{3}).

Square pyramid formula: \frac{1}{3}×B×h where B is the area of the base. By plugging in numbers we have that B=314.159 and h=5. 314.159×\frac{1}{3}×5=523.5983.

Cone formula: The basic formula is the same: \frac{1}{3}×B×h, but the area of the base is found using the circle formula of π×r². For the cone we have B=314.159 and h=5. 314.159×\frac{1}{3}×5=523.5983.

Since both of these formulas came up with the same answer, we can conclude that Cone W has the same volume as Pyramid X, which is Manuel's answer.

7 0
3 years ago
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