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swat32
3 years ago
11

Solve x(x-2)=4 using the quadratic formula

Mathematics
1 answer:
Kaylis [27]3 years ago
4 0

Answer:

=1±(check mark thing)=5

Step-by-step explanation:

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Try looking it up on a search engine and you might find the answer

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5 0
3 years ago
Laboratory tests show that the lives of light bulbs are normally distributed with a mean of 750 hours and a standard deviation o
BartSMP [9]

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34

Step-by-step explanation:

5 0
4 years ago
Which of the following situations could be modeled by an exponential function?
ExtremeBDS [4]

The exponential function will be the amount of the saving account after $75 is invested at a rate of 11% for x number of years. Then the correct option is D.

<h3>What is an exponent?</h3>

Consider the function:

y = a (1 ± r) ˣ

Where x is the number of times this growth/decay occurs, a = initial amount, and r = fraction by which this growth/decay occurs.

If there is a plus sign, then there is exponential growth happening by r fraction or 100r %

If there is a minus sign, then there is exponential decay happening by r fraction or 100r %

The first options are examples of the linear system.

The amount of the saving account after $75 is invested at a rate of 11% for x number of years is modeled as,

Amount = 75 (1 + 0.11)ˣ

Then the correct option is D.

More about the exponent link is given below.

brainly.com/question/5497425

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8 0
2 years ago
Can somone help me pls
Nastasia [14]

Answer:

x = 9

Step-by-step explanation:

First equation = 4x - 8

Second equation = 7x - 35

Seperate the equation with an equal sign to make it an equality equation and solve for X so :

4x - 8 = 7x - 35 (Given)

-3x - 8 = -35 (Subtraction property of equality)

-3x = -27 (Addition property of equality)

x = 9 (Division property of equality)

Solution:

x = 9

4 0
3 years ago
Let ​ x² + 15x = 49 .​ What values make an equivalent number sentence after completing the square? Enter your answers in the box
Pavlova-9 [17]

Answer:

Step-by-step explanation:

15/2 = 7.5 and (7.5)^2 = 56.25  so

x^2 + 15x + 56.25 = 49 + 56.25

x^2 + 15x + 56.25 = 105.25.

5 0
3 years ago
Read 2 more answers
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