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nordsb [41]
3 years ago
6

Perform the operation. (9x2 + 6x – 7) + (-9x - 5) PLS HELP ASAP PLS

Mathematics
2 answers:
FrozenT [24]3 years ago
7 0

Answer:

The answer is 21

Step-by-step explanation:

I searched it up.

qaws [65]3 years ago
6 0

Answer:

21

Step-by-step explanation:

(9x2 + 6x – 7) + (-9x - 5) = 21

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The cashier has been directed to sell bread for half off its regular price of $1.98. What is the sale price?
TEA [102]
If the sale is a half off, then the sale price is
1.98  \div 2 = 0.99
3 0
4 years ago
Find two consecutive positive integers such that the square of the first decreased by 17 equals 4 times the second.
lisov135 [29]

Let the first number = x

The second number would be x + 1  ( this makes the two numbers consecutive).

Now you want the square of the first one to decrease by 17, so now you have x^2 -17.

Then you want that to equal 4 times the second number so you now have:

x^2 -17 = 4(*x+1)

Now we can solve for x:

x^2 -17 = 4x +4

Subtract 4x+4 from both sides:

x^2 - 4x -21 = 0

Factor:

(x-7) (x+3) = 0

Solve for the two x's:

x = 7 and x = -3

The problem states the numbers are positive, so -3 cannot be an answer, so we have X = 7

The first number is X , which is 7 and the second number is x +1 which is 7+1 = 8

The two numbers are 7 and 8.

4 0
4 years ago
PLEASE HELP I NEED TO FINISH
Rom4ik [11]

Answer:

There will be 12 servings in total!

Step-by-step explanation:

4 ÷ 1/3 = 12

Easy!

7 0
3 years ago
Read 2 more answers
8 is what percent of 128?
Sergio039 [100]

Answer:

Hello there

Step-by-step explanation:

128÷8=0.0625

( i use calculator to solve hehe )

3 0
3 years ago
Read 2 more answers
The radius of a circle is 2 feet. What is the length of a 135° arc?
Over [174]

Answer: length of arc = 4.71 feet

Step-by-step explanation:

An arc is a portion of the circumference of a circle. The formula for determining the length of an arc is expressed as

Length of arc = θ/360 × 2πr

Where

θ represents the central angle.

r represents the radius of the circle.

π is a constant whose value is 3.14

From the information given,

Radius, r = 2 feet

θ = 135 degrees

Therefore,

Length of arc = 135/360 × 2 × 3.14 × 2 = 4.71 feet

4 0
4 years ago
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