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guapka [62]
3 years ago
15

Need help don’t understand the step equation on how to do this

Mathematics
1 answer:
pishuonlain [190]3 years ago
5 0

Answer:

x + y = 125

3.50x + 2.25y = 347.50

53 rolls

Step-by-step explanation:

System of equations

so basically if we say that rolls are represented by x and wrapping paper is represented by y, we can say x plus y is 125 because there are a total of 125 rolls and packages. if each roll is 3.50 and each package is 2.25, we can just put each number in front of the corresponding variable to show that each one is worth that amount, and they total to 347.50. then you have to solve the system of equations. so if you solve for x in the first equation, x = 125 - y. so plug that in to the next equation, 3.50(125 - y) + 2.25y = 347.50. solve for y and you get 72.

but y is the number of packages, and we want the number of rolls. there are 125 rolls and packages, so 125 minus the 72 packages and you get 53 rolls

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What is the product of seven and eight decreased by “x” if x =15?
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Answer:

0

Step-by-step explanation:

product is another word for +

decreased is another word for -

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(7 + 8) - x

so

(7+8) - 15

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= 0

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If f(x)=3-2x and g(x)=1/x+5, what is the value of (f/g)(8)​
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Answer:

(f/g)(8)= f(8)/g(8)= = 65/41

Step-by-step explanation:

f(x)=3 - 2x

g(x)=1/x +5

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f(8)= 3-2*8=-13

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The height h of an object projected upward from the floor of the Golden Gate Bridge which has an initial height of 220 feet and
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Two of the most expensive cars in the world are car A and car B. The prices of these two cars differ by more than ​$15,000. The
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The possibilities of the price of car B are values greater than $146645  and values less than $116645

<h3>Write an absolute value inequality that describes this situation. Use x for the price of car B.</h3>

The price of car A is given as:

Car A = 131645

The price difference is given as;

Difference = 15000

The absolute value inequality is represented as:

|x - Car A| > Difference

So, we have:

|x - 131645| > 15000

Hence, the absolute value inequality is |x - 131645| > 15000

<h3>b. What are the possibilities for the price of car​ B?</h3>

In (a), we have:

|x - 131645| > 15000

Remove the absolute bracket

x - 131645 > 15000 and x - 131645 < -15000

Add 131645 to both sides of the inequality

x  > 146645 and x < 116645

Hence, the possibilities of the price of car B are values greater than $146645  and values less than $116645

Read more abut absolute value at:

brainly.com/question/24368848

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8 0
2 years ago
PLSSSSSSSSSS URGENT I NEED HELP!!!
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Answer:

The values of a and b are:

  • a = 2
  • b = 2

Step-by-step explanation:

We know that the slope-intercept form of the line equation

y = ax+b

where

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  • b is the y-intercept

From the diagram of the line graph, we can fetch the two points

  • (0, 2)
  • (-1, 0)

Determining the slope between (0, 2) and (-1, 0)

\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}

\left(x_1,\:y_1\right)=\left(0,\:2\right),\:\left(x_2,\:y_2\right)=\left(-1,\:0\right)

a=\frac{0-2}{-1-0}

a=2

Thus, the value of a = 2

We know that the value of the y-intercept can be determined by setting x = 0, and determining the corresponding value of y.

From the graph, it is clear

at x = 0, y = 2

Thus, the y-intercept b = 2

now substituting a = 2 and b = 2 in the slope-intercept form of the line equation

y = ax+b

y = 2x + 2         ∵ a = 2 , b = 2

Thus, the line of equation is:

y = 2x+2

now comparing with y = ax+b

Here:

a = 2

b = 2

Therefore, the values of a and b are:

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