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3 years ago

I’ll give brainiest

Mathematics

1 answer:

ExtremeBDS [4]3 years ago

3 0

Answer:

B ) ( x + 5 )

Step-by-step explanation:

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Consider the following pair of equations: y = x + 4 y = −5x − 2 Explain how you will solve the pair of equations by substitution

marissa [1.9K]

Answer:

(-1, 3)

Step-by-step explanation:

to solve using substitution, you have to know the value of either x or y. in this example, they gave you the value of y already: y=x+4.

this means you can substitute the y for (x+4). if we substitute y for (x+4) in the equation y=-5x-2, we get this:

(x+4)=-5x-2

then solve for x

6x=-6

so x=-1

since we know the x value, we can solve for y

y=x+4

y=-1+4

y=3

so the final answer is (-1, 3)

6 0

3 years ago

Read 2 more answers

How to get a square root of a given number

bonufazy [111]

Answer:

See below

Step-by-step explanation:

The square root of a number is defined as $\pm y=\sqrt[2]{x}$ where $(\pm y)^{2}$ gives the original number. For example, $\sqrt{4}=\pm2$ because $2^{2}=2*2=4$ and $(-2)^{2}=-2*-2=4$ .

8 0

3 years ago

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About how many feet does a team of athletes run in a 1600 meter relay race

Alex_Xolod [135]

1 feet = 0.3048 m

0.3048 m = 1 feet

1 m = (1/0.3048) feet

1600 m = 1600 * (1/0.3048) ≈ 5249.34

1600 m ≈ 5249.34 feet

7 0

3 years ago

Wingard Credit Union is also interested in understanding how long customers spend in front of the ATMs. Customer service times f

lidiya [134]

Answer:

The probability that a customer will take less than half a minute to complete a transaction is 0.2835.

The probability that a customer will take more than 3 minutes to complete a transaction is 0.1353.

Step-by-step explanation:

Let X = service time of customers at an ATM to complete a transaction.

The average service time is, β = 1.5 minutes.

The random variable X follows an Exponential distribution with parameter λ = 1/β.

The probability density function of X is:

$f(X)=\lambda e^{-\lambda x};\ x>0$

(1)

Compute the probability that a customer will take less than half a minute to complete a transaction as follows:

$P(X$

Thus, the probability that a customer will take less than half a minute to complete a transaction is 0.2835.

(2)

Compute the probability that a customer will take more than 3 minutes to complete a transaction as follows:

$P(X>3)=\int\limits^{\infty}_{3} {\frac{1}{1.5} e^{-\frac{x}{1.5}}} \, dx \\=\frac{1}{1.5}\int\limits^{\infty}_{3} { e^{-\frac{x}{1.5}}} \, dx\\=\frac{1}{1.5}|\frac{e^{-\frac{x}{1.5}}}{-\frac{x}{1.5}}|^{\infty}_{3}\\=-e^{-\frac{\infty}{1.5}}+e^{-\frac{3}{1.5}}\\=0+0.1353\\=0.1353$

Thus, the probability that a customer will take more than 3 minutes to complete a transaction is 0.1353.

4 0

4 years ago

In 2014, there were approximately 900,000 sworn law enforcement officers serving in the U.S. Approximately 12 percent of those o

Alika [10]

108000

900000/100=9000

9000x12=108000

4 0

3 years ago

Read 2 more answers