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2 years ago

Notebooks cost $ 1.20 each. This weekend they will be on sale for $ 0.80. What percentage is the sale

Mathematics

2 answers:

myrzilka [38]2 years ago

8 0

If you mean what was the percentage of how much lower it got, I think about 32%. Somewhere around there

Schach [20]2 years ago

6 0

So sale is x% off
find how much was taken off
1.20-0.80=0.40

so find what 0.4 out of 1.20 is
0.4/1.2=4/12=1/3=33.33%

so the sale is 33.33% off

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What x values would be good to use so she does not get fractions for her y values when making the table of ordered pairs.

Ber [7]

Answer:

-3, 0, 3

Step-by-step explanation:

Given, $y = -\frac{4}{3}x + 2$ , the set of x values that will make Kayda not to get y values that are not fraction are -3, 0, 3.

This is so, because,

when x = -3, $y = -\frac{4}{3}(-3) + 2 = \frac{12}{3} + 2 = 4 + 2 = 6$

when x = 0, $y = -\frac{4}{3}(0) + 2 = -0 + 2 = 2$

when x = 3, $y = -\frac{4}{3}(3) + 2 = \frac{-12}{3} + 2 = -4 + 2 = -2$

The correct response is -3, 0, 3

5 0

3 years ago

Veronika [31]

Answer: 6.75% which rounds up to 7%

Step-by-step explanation:

5 0

2 years ago

Which of the following ordered pairs in a solution of the equation y equals negative 4 x squared

Jlenok [28]

Answer:

Step-by-step explanation:

The equation is y = -4x²

Next time, please share the answer choices.

Here's a short table of possible solutions:

x -x² (x, y)

----- ------ ---------

0 0 (0, 0)

2 -4 (2, -4)

-3 -9 (-3, -9)

6 0

3 years ago

For party decorations, you buy 6 rolls of crepe paper and 20 balloons for $11.90. After you start decorating, you determine that

Morgarella [4.7K]

Answer:

Find out the how much did each roll of crepe paper cost .

To prove

Let us assume that the cost of the roll of crepe paper be x.

Let us assume that the cost of the balloon be y .

As given

For party decorations, you buy 6 rolls of crepe paper and 20 balloons for $11.90.

Than the equation becomes

6x + 20y = 11.90

As given

After you start decorating, you determine that you need more party decorations.

You buy 2 more rolls of crepe paper and 15 more balloons for $6.05.

Than the equation becomes

2x + 15y = 6.05

Than two equations are

6x + 20y = 11.90 and 2x + 15y = 6.05

Multiply 2x + 15y = 6.05 by 3 and subracted with 6x + 20y = 11.90

6x - 6x + 45y -20y = 18.15 - 11.90

25y = 6.25

$y = \frac{6.25}{25}$

y = $0.25

Put in the equation 2x + 15y = 6.05

2x + 15 × 0.25 = 6.05

2x = 6.05 - 3.75

2x = 2.3

$x = \frac{2.3}{2}$

x = $1.15

Therefore the each roll of crepe paper cost is $1.15 .

6 0

3 years ago

Read 2 more answers

What can you conclude about the color of the l-bow roni box? helpppppppp

Kazeer [188]

Assuming that the p-value of the color of L-Bow Roni box is below the significance level, the result would be statistically significant and vice-versa.

<h3>What is a confidence interval?</h3>

A confidence interval simply refers to a range of estimated values that defines the probability that a population parameter would fall or lie within it.

In this scenario, we can infer and logically conclude that the p-value of the color of L-Bow Roni box falls below the significance level. Consequently, the result obtained would be statistically significant.

Read more on confidence interval here: brainly.com/question/25779324

#SPJ1

8 0

2 years ago