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3 years ago

How do u factor..x^2 + 10× - 2400 = 0

Mathematics

2 answers:

Lunna [17]3 years ago

3 0

Answer:

${ \bf{ {x}^{2} + 10x - 2400 = 0}} \\ { \bf{ \red{it \: has \: no \: rational \: factors}}} \\ x = - 54.2 \: \: and \: \: 44.2$

leva [86]3 years ago

3 0

X^2+10•-2400=0
x^2-24000=0
x^2=24000
take the square root of 24000

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A hobby store marks up remote-controlled cars 25%. The original

aksik [14]

Answer: $37.50

Explanation:
1. Turn 25% into a decimal by removing the “%” and placing a “0.” in front of it. (0.25)
2. Multiply the decimal (0.25) by the original price of the car (30). (0.25x30=7.5)
3. Add 7.5 to 30 to get the answer. (7.5+30=37.5=$37.50)

7 0

3 years ago

i need with this math problem. I am confused on how to do it. If you could help me it would be great. There are 2 parts to this

Novay_Z [31]

She took a total of 60 minutes
she answered both mulitiple choice and extended response in the total time which is 60 minutes
she took 2 minutes on rach multiple choice question and 6 minutes for the extended response
let x=number of multiple choice questions
let y=number of extended response questions
we can deduce that
total time =x*2+y*6
60=2x+6y
also we can deduce
20=x+y
since 20 ia the sum of multiple choice and extended response
for part 2 we just solve the system of equations
60=2x+6y
20=x +y
lets multiply the second equation by 2 so we can get rid of x
60=2x+6y
40=2x+2y
subtracting the two equations from each other to yields
20=0 +4y
y=5
to get x we substitute in one of the equations we derived from question 1
x+y=20
substituting y for its value we get
x+5=20
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4 0

3 years ago

Mr jb has a rectangular lot that measure 550 meters by 0.75 km.What is the area of the land in square meter. He is selling the w

Art [367]

Answer:

The area in square meter is 412,500 square meters

the price per square meter is 500 pesos per square meter

Step-by-step explanation:

Firstly, let us get the measure of the dimensions in meters

Mathematically, 1000 m = 1 km

Thus;

0.75 km = 0.75 * 1000 = 750 m

The area of a rectangle is the product of its side lengths

mathematically, we have this as;

550 * 750 = 412,500 square meters

To get the price per square meter, we have to divide the price of the whole plot by the area

So we have ;

(206,250,000) pesos / 412,500 square meters

= 500 pesos per square meter

8 0

2 years ago

4. Nancy has a balance of $5000 on a credit card with a 18% interest rate (1.5% per month). The late payment fee is $30. Nancy m

Charra [1.4K]

Step-by-step explanation: i think b or d

3 0

2 years ago

Hello, I’m struggling, please help :)

leva [86]

Answer:

1. Vanilla

2.Strawberry

3.Chocolate

4.CS

5.VV

6.SS

Step-by-step explanation:

For these problem you are solving to find ALL of the possible outcomes with the 3 flavours.

1. They already have a combination for Chocolate-chocolate and Chocolate-Strawberry. The only flavour you haven't used yet is vanilla which makes your first answer vanilla.

2. They already have a combination for Vanilla-Chocolate and Vanilla-Vanilla. The only flavour you haven't used yet is Strawberry which makes your answer strawberry.

3. They already have a combination for Strawberry-Vanilla and Strawberry-Strawberry. The only flavour you haven't used yet is chocolate which makes your answer chocolate.

So when looking at the letters they are honestly just initials to the combinations possible. The order of the letters depend on what words come first going down your branch.

4. The two words are chocolate and strawberry. The first letter in both words are C and S so the answer is CS.

5. The two words are vanilla and vanilla. The first letter in both words are V and V so the answer is VV.

6. The two words are strawberry and strawberry. The first letter in both words are S and S so the answer is SS.

5 0

3 years ago

How do u factor..x^2 + 10× - 2400 = 0 ​

How do u factor..x^2 + 10× - 2400 = 0