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3 years ago

Which statement comparing x² + 10 and x + x + x is true when x=−5 ?

1 answer:

3 0

X^2 + 10 = 35 when x = -5
x + x + x = 3x = -15 when x = -5.

The answer is B because part A just restates the first equation, and Part C determines which is greater. If you want to determine the difference between the two when x = -5, part B is the best answer because it subtracts the product of one of them from the other.

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Identify the amount, base, and percent in the problem: What is 60% of 485?

IrinaK [193]

Hey there! I'm happy to help!

The percent in the problem is 60% (as it has a percent time).

The base is the number we start with, so it is 485.

The amount is the percent of the base. As a decimal, 60% is 0.6. So, we just multiply this by 485.

0.6×485=291

Therefore, the amount is 291.

AMOUNT: 291

BASE: 485

PERCENT: 60%

Have a wonderful day! :D

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4 years ago

Please help me answer these questions

Delicious77 [7]

Answer:

B and D

Step-by-step explanation:

4x13=52 and 10/10=1 x 13=13

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3 years ago

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If every 9 Points Equals 1 Dollar How Many Points Do I Need To Make One Thousand Dollars?

podryga [215]

Since 9 points is a dollar and you need a thousand dollars multiply 1000 by 9

9*1000=9000

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3 years ago

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find the dimensions of the sports field at the right if the width is at least 60 yards AREA = 240 - 400X SQUARE YARDS

charle [14.2K]

Answer:

<u>The dimensions of the sports field are 80 yards and 3 - 5x yards</u>

Step-by-step explanation:

1. Let's review the information provided to us to answer the question correctly:

Width of the sports field = At least 60 yards

Area of the sports field = 240 - 400x square yards

We can conclude the shape of the sports field is rectangular.

2. Find the dimensions of the sports field.

A. We need to find the Greatest Common factor between 240 and 400, this way:

The factors of 240 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240 .

The factors of 400 are: 1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400 .

Then the greatest common factor is 80.

This GCF is also higher than 60, therefore it's one of the dimensions of the sports field.

Now, we calculate the other side of the sports, this way:

Second dimension of the sports field = (240 - 400x)/80

Second dimension of the sports field = 3 -5x

<u>The dimensions of the sports field are 80 yards and 3 - 5x yards</u>

8 0

3 years ago

The use of a wind-powered energy is becoming more and more prevalent around the world to produce clean energy. A windmill with

Ket [755]

Remark
This really belongs in physics. However, it can be done here. The angular velocity does not have anything to do with the length of the blade,

ω = 2π radians / time which will give you radians
ω = 2π * 45 rpm
ω = 90 π radians / minute.

This usually is expressed as radians per second
ω = 90 π / 60 radians / second
ω = 1.5 π radians / second.

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4 years ago