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DIA [1.3K]
3 years ago
10

Using Quadratic Equations to Solve Problems:

Mathematics
1 answer:
satela [25.4K]3 years ago
3 0

Answer:

4

Step-by-step explanation:

Let x represent the number. The problem statement tells us ...

10x² = 40x

x = 4 . . . . . . . divide by 10x

the number is 4. Hope that helps love!

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3.8=1.9z-3.8 what does z equal
ch4aika [34]
Add 3 to isolate y

3.8 + 3.8 = 1.9z - 3.8 + 3.8

7.6 = 1.9z

Divide by 1.9

4 = z


3 0
3 years ago
Can some one help, step bye step please
il63 [147K]

Answer:

$14.23

Step-by-step explanation:

Multiply the original value by 1.035 to get your answer.

4 0
3 years ago
Read 2 more answers
How many repeating digits are in <br><br> 1<br> 2<br> 3<br> 4
Alina [70]

Answer:

infinite

Step-by-step explanation:

7 0
2 years ago
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Your teacher recently found an old Nintendo in a thrift store. Use the formula to predict the value of the Nintendo in 2020. (Re
9966 [12]

The value of the Nintendo after 35 years is $2455

Since the formula f(x) = 3x² - 40x + 180 predicts the value of the Nintendo x years after 1986.

Since we require the value in 2021, x years after 1986 is 2021 - 1986 = 35 years.

Substituting x = 35 into the equation, we have

f(x) = 3x² - 40x + 180

f(x) = 3(35)² - 40(35) + 180

f(x) = 3(1225) - 40(35) + 180

f(x) = 3675 - 1400 + 180

f(x) = 2275 + 180

f(x) = 2455

So, the value of the Nintendo after 35 years is $2455

Do you think this is a realistic prediction of the value of that Nintendo?

This is not a realistic prediction for the value of the Nintendo, because, it is too high.

Learn more about quadratic equations here:

brainly.com/question/13704125

4 0
2 years ago
Increase £30 by 15% what is the answer
zheka24 [161]
30X15=450. 450:100= 4,50. 30+4,50= 34,50
7 0
2 years ago
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