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2 years ago

For what values of x is x2+2x=24 true?

Mathematics

2 answers:

JulijaS [17]2 years ago

5 0

Answer:

$x=-6$ and $x=4$

Step-by-step explanation:

We must solve the quadratic equation to find the values of x that satisfy equality

$x^2+2x=24$

Subtract 24 on both sides of equality

$x^2+2x-24=24-24$

$x^2+2x-24=0$

Now we factor the quadratic equation

Identify two numbers that when you add them you get as a result 2 and when you multiply them you get as a result -24

The numbers sought are: 6 and -4

So the factors are:

$(x+6)(x-4)=0$

Finally note that the solutions are:

$x=-6$ and $x=4$

Blababa [14]2 years ago

5 0

Answer:

The answer is C). 4 and-6

Step-by-step explanation:

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Nastasia [14]

Answer:

In the first week, Micah bought 11 gallons of gas.

In the second week, Micah bought 8 gallons of gas.

Step-by-step explanation:

Given:

First week

x gallons of gas at $2.39 per gallon

x gallons = $2.39x

Second week

3 fewer gallons of gas than the first week at $2.49 per gallon

x - 3 gallons = $2.49(x-3)

Total spent = $46.21

$2.39x + $2.49(x-3) = $46.21

2.39x + 2.49x - 7.47 = 46.21

4.88x - 7.47 = 46.21

Add 7.47 to both sides

4.88x - 7.47 + 7.47 = 46.21 + 7.47

4.88x = 53.68

Divide both sides by 4.88

x = 53.68/4.88

= 11

x = 11

First week = x = 11 gallons

Second week

= x - 3

= 11-3

= 8 gallons

Therefore,

In the first week, Micah bought 11 gallons of gas.

In the second week, Micah bought 8 gallons of gas.

3 0

3 years ago

One cubic foot holds 7.48 gallons of water, and one gallon of water weighs 8.33 pounds. how much does 7.2 cubic feet weigh in

mixas84 [53]

Your answer is 23.01 in ounces

7 0

3 years ago

The look-out point of a tower is 60 feet above the ground. A man observes a fountain from the look-out point. The angle of depre

Mademuasel [1]

27.98ft

You can get this by using the tangent formula. The answer exactly expressed is 60tan25.

5 0

3 years ago

Please help me with math work pol Mrs

storchak [24]

Try to divide 62.01÷ 9 and then do it with the other one

6 0

3 years ago

Hey salesman needed to settle for Willie he priced at $3500 the first day it was on the market the second he reduced it by 10% w

nataly862011 [7]

Answer:

The price of the four wheeler after with the reduction is $3,150.

Step-by-step explanation:

The original price of the Willa = $3500

The reduction percentage = 10%

Now, 10% of $ 3500 = $\frac{10}{100} \times 3500 = 350$

So, the reduction amount is $350.

So, the reduced price of Willa = The original price - The reduced price

= $3500 - $350. = $3,150.

Hence, price of the four wheeler after with the reduction is $3,150.

5 0

3 years ago