MATHEMATICS MIDDLE SCHOOL

Marco paid $22.62 for 7.8 gallons of gas. What is the price of 1 gallon of gas

Answers

Answer 1
Answer:

Answer:

$2.90

Step-by-step explanation:

22.62/7.8=2.90
Answer 2
Answer: The price of one gallon is $2.90

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A rectangle has the length of 22 inches less than 7 times the width. If the area of the rectangle is 3197 square inches, find the length of the rectangle

Answers

The length of rectangle is 139 inches

Solution:

Given that, area of the rectangle is 3197 square inches

Let "L" be the length of rectangle and "W" be the width of rectangle

Also given that rectangle has the length of 22 inches less than 7 times the width

Length = 7 times width - 22

L = 7W - 22

The area of rectangle is given as:

\text {Area of rectangle }=\text { length } * \text { width }

Substituting the values we get,

\begin{array}{l}{3197=(7 W-22)(W)} \n\n {3197=7 W^(2)-22 W} \n\n {7 W^(2)-22 W-3197=0}\end{array}

On solving the above quadratic equation using quadratic formula,

\text {For the quadratic equation } a x^(2)+b x+c=0 \text { where } a \neq 0

x=\frac{-b \pm \sqrt{\left(b^(2)-4 a c\right)}}{2 a}

\begin{array}{l}{\text {Here in } 7 \mathrm{W}^(2)-22 \mathrm{W}-3197=0} \n\n {a=7 ; b=-22 ; c=-3197}\end{array}

Substituting in above quadratic formula,

\begin{array}{l}{W=\frac{-(-22) \pm \sqrt{\left((-22)^(2)-4(7)(-3197)\right)}}{2 * 7}} \n\n {W=(22 \pm √(90000))/(14)=(22 \pm 300)/(14)} \n\n {W=(22+300)/(14) \text { or } W=(22-300)/(14)} \n\n {W=23 \text { or } W=-19.85}\end{array}

Since width of rectangle cannot be negative, ignore negative value of "W"

So width W = 23 inches

Length L = 7W - 22 = 7(23) - 22 = 139 inches

Thus length of rectangle is 139 inches

How how much centimeters are in 25 meters

Answers

multiple with 100 = 2500 centimetres
25*100=2500, Therefore your answer is 2500.

Hope this helps.

How many meters are in 47 kilometers

Answers

47 kilometers equal to 47000 meters
The answer to the question is 47000

Is 40(2x-16y) equivalent to 42x-56y

Answers

No, because the Distributive Property shows that 40(2x-16y) = 80x-640y, which does not equal 42x-56y

The president of a company creates a graph of the price of the company’s stock over one year. He describes the graph as follows: • The price of the stock rose to about $17 before falling to about $3. • There have only been two periods during which the price of the stock decreased. • The price of the stock is expected to increase in the long run. Which graph correctly shows the price of the stock?

Answers

Answer:

Option D

Just took test on ed2020 it is the last graph. Option D

Step-by-step explanation:

Answer: D

Step-by-step explanation:

Sue asked a total of 35 points in two games. She scored 6 times as many points in the second game as in the first how many more points did she score in the second

Answers

210 because 35 times 6 is 210 because if you break it apart 5 time 6 =30 bring the 3 times 6 is 18 add 3 from the 30 and you will get 21 and then add 0 to the end of 21 and you will get 210
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