Mathematics College

Solve the system of equations by the substitution method.
y = 4x-9
y-x=-3

A.(2, -1)
B.(-4,-7)
C.(-1,2)
D.(-7,-4)

Answers

Answer 1

Answer:

A. (2, -1)

Step-by-step explanation:

(4x - 9) - x = -3

3x - 9 = - 3

3x = 6

x = 2

y = 4(2) - 9

y = 8 -9

y = - 1

(2, -1)

Check

-1 - 2 = -3

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2) 8x +9y = 82
2x + 2y = 20

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X=8 and y=2 solved using elimination

When a 15%, 38%, and 44% series of discounts are applied, the total markdown rounded to the nearest percent is​

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Answer: 97%

Step-by-step explanation:

15% + 38% + 44% = 97%

What is the fraction 7/12 as a product of a whole number and a unit fraction

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Answer:

7 1/2 is the answer because you have to multiply the whole by the denominator. Make that product the numerator.

Step-by-step explanation:

0.345 times 83.8 I forgot how to do it .w.

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Answer:

28.911

Step-by-step explanation:

you just have to open up a calculator lol

Can someone help me please it’s urgent what’s the answer or property of c?

Answers

Answer:

Associative property

Step-by-step explanation:

Which of these represents the equation of a line that passes through the points (-5, -4) and (3, 8)?
A
3
y = x +
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B.
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y = ſa +6
y= 3x - 22
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Answers

The answer is a I just did it :)

0.06 divided by 0.6 what is it

Answers

Answer:

0.1

Step-by-step explanation:

Answer:

0.1

Step-by-step explanation:

0.06 divided by 0.60 = 0.1

Help me please, 1. And 2.

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Answer:

Step-by-step explanation:YOU HAVE TO SHOW ME THE WHOLE THING SO THAT I CAN ANSWER IT DUH

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i don’t understand.
online school is hard

$99.99, 19% discount​

Answers

Answer:

$80.99

Step-by-step explanation:

Turn the percentage into a decimal.

19% -> 0.19

Multiply.

99.99 * 0.19 ≈ 19

Subtract.

99.99 - 19 = 80.99

Best of Luck!

Evan sells bicycles in his store. He marks up the prices by 40% of what he pays for them. If he
sells a gold bicycle for $180.49. how much did he buy it for?

Answers

Answer:

Step-by-step explanation:

1.40x = 180.49

x= $128.92

8. Find the value of x in the isosceles triangle.

Answers

X is 15 inches long.
Work is shown in the picture

Which table represent a linear function? Pic attached and I will mark Brainly

Answers

Answer:

3 one

Step-by-step explanation:

seems logical hope this helped

Which type of triangle is formed given the following angle measurements?
Angle 1: 50 degrees
Angle 2: 110 degrees
Angle 3: 20 degrees

Answers

An obtuse scalene triangle

Obtuse = an angle over 90
Scalene = three different angles

Espaol
A math class has 7 girls and 3 boys in the seventh grade and 4 girls and 4 boys in the eighth grade. The teacher randomly selects a seventh grader and an
eighth grader from the class for a competition. What is the probability that the students she selects are both girls?
Write your answer as a fraction in simplest form.
M

Answers

Answer:

61%

Step-by-step explanation:

7g+3b= 7th grade

4g+4b= 8th grade

70% chance of a girl getting picked from 7th grade

50% chance of a girl getting picked from 8th grade class

11g+7b= both classes

about 61% chance for both classes to be a girl picked?

help me please. Can somebody please help me.

Answers

Answer:

oh my :o

Ok so just mutiply

Step-by-step explanation:

Solve.

−8y ≥ 56


a. y ≤ −7


b. y ≥ 7


c. y ≤ 7


d. y ≥ –7

Answers

Answer:

 I believe y ≤ -7 Sorry if I am incorrect

Step-by-step explanation:

I think the answer is A.

What is the slope of the line: Y= -5x subtract 15?

Answers

Answer:-5

Step-by-step explanation:

m is considered the slope

y=mx-15

And in this situation m=-5

So slope = -5

I need help
Please answer y

Answers

Answer:

○ 1. B

○ 2. 146.25

Add the numbers

○3. (-6w) - 8 + 1 (-7w)

(-6w) -7 + (-7w)

Rearrange

(-6w) + -7 + (-7w)

(-6w) + (-7w) - 7

Solution

(-6w) + (-7w) - 7

○4. In mathematics, a rational number is a number such as −3/7 that can be expressed as the quotient or fraction p/q of two integers, a numerator p and a non-zero denominator q. Every integer is a rational number: for example, 5 = 5/1

Answer:

hello there

Step-by-step explanation:

thank you very much

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Answers

Answer:

I think its 144!!!!!!!!!!!!!!!!!!

Answer:

Diagram 2  (Bottom diagram)

Step-by-step explanation:

The ratio is twice as many (2)

2:1

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Answer:

It means mathematics.

Lamoo thats wht it said in go-ogle

Step-by-step explanation:

Ally picked 25 roses. She gave away 10 roses. What percent of the roses does Ally still have?

Answers

Answer:

She still has 60%

Step-by-step explanation:

First you make the 25 a 100 which is basically multiply by 4 which you should do the same for 10

so 40/100 is how much she game away

She gave away 40%

She still has 60%

The percent of the roses does Ally still have is 60%.

Given that,

Ally picked 25 roses. She gave away 10 roses.

Based on the above information, the calculation is as follows:

[tex]= \frac{25-10}{25}[/tex]

= 60%

Learn more: brainly.com/question/17429689

3/4(8x -4) is equivalent to 3x - 2 + 3x - 1
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Answers

Answer:

true

Step-by-step explanation:

-9(x+2)=54 apply the distributive property and simplify ​

Answers

Answer:

x = -8

Step-by-step explanation:

-9 (x+2) = 54

-9x - 18 = 54

-9x = 72

x = -8

Hope this helps :)

Let me know if there are any mistakes!!

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Answers

The answer to this question is A x<8

What is the constant and variable of 6a in algebra

Answers

Answer:

Constant is 6 and the variable is a

If the point (−1,3) is translated according to the rule (x,y)→(x+4,y−2), and then reflected across the x-axis, what are the coordinates of the final image?
A. (3,−1)
B. (3,1)
C. (−1,3)
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btw the answer is A, because i took the assignment on gizmos this is just for people who need the answer :>

Answers

Answer:

hi

Step-by-step explanation:

rfshs hmm jtutq JK jehewyywgu

Answer:

<3

Explanation:

I guess me need it in future


The price of an item yesterday was $40. Today, the price fell to $22. Find the percentage decrease.

Answers

Answer:

45%

Step-by-step explanation:

40 * .45 = 18

40-18 = 22

The percentage decrease of an item would be 45%.

What is the percentage?

The percentage is defined as a ratio expressed as a fraction of 100.

We can determine the value of the percentage decrease by the following formula,

percentage decrease = (initial value - reduced value) / initial value × 100%

As per the given question, we have

initial value = $40, and reduced value = $22

Substitute the values in the above formula, and we get

percentage decrease = (40 - 22) / 40 × 100%

percentage decrease = (18) / 40 × 100%

percentage decrease = 0.45 × 100%

Apply the multiplication operation, and we get

percentage decrease = 45%

Thus, the percentage decrease of an item would be 45%.

Learn more about the percentages here:

brainly.com/question/24159063

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When Trudy planted a large bush in her garden, it was 2 feet tall. Now it is 50% taller. How tall is the bush now?

Answers

Answer: 3 feet tall

Step-by-step explanation:

50% of something is also 1/2 of it. So if we multiply 2 by 1/2 or .5, we get 1. So then we take 1 and add it to 2 because it is 50% taller than what it used to be.

Grocery store scales are occasionally checked by inspection agencies for their accuracy in reporting the weights of purchased merchandise. Scales are allowed to operate as long as the percent error of their reported weights is within 0.5% of the actual weight measured. If you wanted to purchase 15.0 pounds of flour, what range of weights is the scale allowed to report in order to be compliant with local inspection agency regulations.

Answers

Answer:

The range of weights in the scale allowed to report in order to be compliant with local inspection agency regulations is between 14.925 pounds and 15.075 pounds.

Step-by-step explanation:

The weights should be within 0.5% of the actual weight measured.

15.0 pounds

0.005*15 = 0.075

Tolerance of 0.075 pounds

15 - 0.075 = 14.925 pounds

15 + 0.075 = 15.075 pounds

The range of weights in the scale allowed to report in order to be compliant with local inspection agency regulations is between 14.925 pounds and 15.075 pounds.

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