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Anna11 [10]
3 years ago
7

What's the answer to -2x^2-4x-5=o and what's the solution

Mathematics
1 answer:
Maksim231197 [3]3 years ago
8 0
-2x^2-4x=0
you just move the -5 to the right and get 5 and you cant subtract 4x from -2x^2
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A gas station fills up at a rate of 7/8 per 9/10 of. aminute. what is the rate for one minute
MrRa [10]

Answer:The normal resting heart rate for adults over the age of 10 years, including older adults, is between 60 and 100 beats per minute (bpm). Highly trained athletes may have a resting heart rate below 60 bpm, sometimes reaching 40 bpm. The resting heart rate can vary within this normal range.

Step-by-step explanation:

8 0
3 years ago
Find the product.<br> 5x0.02=
lozanna [386]

Answer:

.1

Step-by-step explanation:

6 0
3 years ago
The expression 210,000\left(1.02\right)^x210,000(1.02)
Bad White [126]

Answer:

The house is increasing in value by 2% each year.

Correct the increase is 1.02 per year the value of b>0 and the percentage of increase each year is:

\frac{1.02-1}{1} *100 = 2\%

Step-by-step explanation:

For this case if we have this expression

210000(1.02)^x

We have the same functional forma like the exponential model given by:

y = a b^x

Where a = 210000 represent the constant or initial value and b = 1.02 represent the base.

So let's analyze the possible options:

The house has a starting value of 1.02.

False the starting value for this case is 210000 since if x=0 then we see that the value is 210000

The house is decreasing in value by 2% each year.

False the increase is 1.02 each year so then in % we have

\frac{1.02-1}{1} *100 = 2\%

We  have an increase of 2% each year

The house is increasing in value by 2% each year.

Correct the increase is 1.02 per year the value of b>0 and the percentage of increase each year is:

\frac{1.02-1}{1} *100 = 2\%

The value of the house is changing by 0.02% each year.

False the increase is 2% per year

4 0
3 years ago
I have $8 and make a purchase for $5. What percent of money did I spend
Harman [31]
5/8 =
2.5/4=
62.5/100=
62.5%
7 0
3 years ago
Find the greatest common factor.<br> 2y^3, 8y
Ira Lisetskai [31]

Answer:

STEP1:Equation at the end of step 1

2y3 - 8y

STEP2:

STEP3:Pulling out like terms

 3.1     Pull out like factors :

   2y3 - 8y  =   2y • (y2 - 4) 

Trying to factor as a Difference of Squares:

 3.2      Factoring:  y2 - 4 

Theory : A difference of two perfect squares,  A2 - B2  can be factored into  (A+B) • (A-B)

Proof :  (A+B) • (A-B) =

         A2 - AB + BA - B2 =

         A2 - AB + AB - B2 =

         A2 - B2

Note :  AB = BA is the commutative property of multiplication.

Note :  - AB + AB equals zero and is therefore eliminated from the expression.

Check : 4 is the square of 2

Check :  y2  is the square of  y1 

Factorization is :       (y + 2)  •  (y - 2) 

Final result :

2y • (y + 2) • (y - 2)

4 0
3 years ago
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