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2 years ago

Given a+2 when a=5 I need help

Mathematics

2 answers:

kow [346]2 years ago

6 0

The answer would be 7 so the top person is right :)

blsea [12.9K]2 years ago

3 0

Answer:

The answer to this is 7.

a+2

5+2

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Write 900.000+80.000+500+7 in standard from.

Bas_tet [7]

980,507 i believe... maybe

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2 years ago

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The function y = -x + 4 has to main of {0.3,6). What is its range?

Komok [63]

Answer:

i think it's A if I'm wrong then wow

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2 years ago

Solve.

bixtya [17]

Answer:

$-3 ± 2\sqrt{3} = x$

Step-by-step explanation:

x² + 6x + 9 = 12 → x² + 6x - 3

Since this Quadratic Expression is unfactorable, apply the Quadratic Formula:

$x = -b ± \frac{\sqrt{{b}^{2} - 4ac}}{2a}$

$-6 ± \frac{\sqrt{{6}^{2} - 4(1)(-3)}}{2(1)} = -6 ± \frac{\sqrt{36 + 12}}{2} = -6 ± \frac{\sqrt{48}}{2} \\ \\ -3 ± 2\sqrt{3}$

√48 = √[3 × 16] = 4√3

½[4√3] = 2√3

Then attach half of -6 to it as well [-3]:

-3 ± 2√3

I am joyous to assist you anytime.

7 0

2 years ago

Assume a normal distribution and that the average phone call in a certain town lasted 4 min, with a standard deviation of 1 min.

olya-2409 [2.1K]

SOLUTION

The mean is 4min

standard deviation is 1min

the z score is

$z=\frac{x-\bar{x}}{\sigma}$

where

$\begin{gathered} x=3 \\ \bar{x}=4 \\ \sigma=1 \end{gathered}$

then we have

$\begin{gathered} z=\frac{3-4}{1}=\frac{-1}{1}=-1 \\ z=-1 \end{gathered}$

The probability the call lasted less than 3 min will be

Therefore, the probability that (z < -1 ) is

[tex]\begin{gathered} Pr(z<-1)=Pr(0Hence, the percentage of the calls that lasted less than 3 min is 16%

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11 months ago

Which equation can be used to solve the following word problem?

ra1l [238]

A is definitely the answer.

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2 years ago

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