MATHEMATICS HIGH SCHOOL

The length of a rectangle is 1 less than twice the width. The area of the rectangle is 28 square feet. Which equation represents the situation?

Answers

Answer 1
Answer:

Answer:

2W²-W-28 = 0 is the equation.

Step-by-step explanation:

To form the equation we should always follow the statement as said.

First statement is

The length (L) of a rectangle is 1 less than twice of width (W).

Means L = 2W - 1  -------(1)

Second statement

Area of the rectangle is 28 feet²

Means L×W = 28 ------(2)

Now by putting the value of L from equation 1 to equation 2.

(2W - 1)×W = 28

2W² - W = 28

2W² - W - 28 = 0

This the equation that represents the situation.
Answer 2
Answer: 2w^2 - w - 28 = 0, I dont know how this is right but it is 

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The function fis defined by f(x) = 3x-3. For what value of x is f(x) = 48?

Answers

Answer:

f(17) = 48

Step-by-step explanation:

Since f(x) = 3x-3, to find the value of x when f(x) = 48 can be found by substituting 48 for f(x).

48 = 3x - 3

51 = 3x

17 = x

When x is 17, f(x) is 48.

Answer: x=51/3

Step-by-step explanation:

Make f(x)= 48

48=3x-3

Add 3 on each side

51=3x

Divide by 3

51/3

X=51/3

Which two temperatures have a sum of 0 degrees Celsius?4 degrees Celsius and 4 degrees Celsius
4 degrees Celsius and −4 degrees Celsius
−4 degrees Celsius and −4 degrees Celsius
4 degrees Celsius and 0 degrees Celsius

Answers

4 and -4 degrees Celsius

Gallon of cleaner are on sale for 50% off the regular price of $3.18. a customer buys one gallon and the cashier $5.00 The customer change is

Answers

50% off $3.18 = 3.18 X .50 = 1.59

3.18 minus discount of 1.59 = 1.59

Now 5.00 - total cost of 1.59 = 3.41 in change

How many acute angles does an obtuse triangle have​

Answers

Answer:

i think 2

Step-by-step explanation:

ya i think 2

Ms. Leong owned an ice cream store and had chocolate and vanilla ice cream for sale. She sold 3/4 of the chocolate ice cream and 1/2 of the vanilla ice cream. If she had 20 scoops of chocolate ice cream and 30 scoops of vanilla ice cream left, how many scoops of ice cream did Ms. Leong have altogether at first?

Answers

Answer: 140 scoops.

Step-by-step explanation:

We know that she sold 3/4 of the chocolate ice cream and 1/2 of the vanilla ice cream. She originally had 20 scoops of chocolate and 30 of vanilla left.

so those 20 scoops of chocolate are 1/4 of the total amount that she had before, then the total amount is equal to 4 times 20 scoops = 80 scoops of chocolate.

We also know that 30 scoops of vanilla are one half of the initial number, so the initial number must be equal to two times 30 scoops = 60 scoops.

Now, adding those numbers we have 60 + 80 = 140 scoops in total at the beginning of the day.
The answer is 140 scoops of ice cream total .

A 15-foot pole is leaning against a tree. The bottom of the pole is 8 feet away from the bottom of the tree. Approximately how high up the tree does the top of the pole reach?


A.17.0 feet

B.12.7 feet

C.7.0 feet

D.1.9 feet

Answers

The answer would be B)12.7 feet
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