3 years ago

2(k-5)+3k=k+6 Solve the following linear equation for .

Mathematics

1 answer:

Snezhnost [94]3 years ago

7 0

Answer: K=4

Step-by-step explanation:

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Evaluate: b ÷ a for a = 2 and b = 18

Jlenok [28]

Answer:

b/a=9, 9 is the answere

Step-by-step explanation:

i did it mentally lol

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3 years ago

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If f(x) = 6x - 4, what is f(x) when x = 8? оооо

Drupady [299]

Answer:

$f(x)=44$

Step-by-step explanation:

Replace the value of x with 8:

$f(x)=6(8)-4\\ \\ 6\times8= 48\\ \\ 48 -4 =44\\ \\ f(x)=44$

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3 years ago

For which equation is x = 7 the solution? 9 x = 63 5 x = 40 7 x = 0 6 x = 36

romanna [79]

Answer:

1. 9x = 63

Step-by-step explanation:

9x = 63

if x=7, then 9(7) = 63

9*7=63

63 = 63

6 0

3 years ago

The department of public safety has an old memo stating that the number of accidents per week at a hazardous intersection varies

ELEN [110]

Answer:

P-value = 0.1515

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 2.2

Sample mean, $\bar{x}$ = 2

Sample size, n = 52

Alpha, α = 0.05

Population standard deviation, σ = 1.4

First, we design the null and the alternate hypothesis

$H_{0}: \mu =2.2\\H_A: \mu < 2.2$

We use one-tailed(left) z test to perform this hypothesis.

Formula:

$z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }$

Putting all the values, we have

$z_{stat} = \displaystyle\frac{2 - 2.2}{\frac{1.4}{\sqrt{52}} } = -1.03$

Now, we calculate the p-value from the normal standard table.

P-value = 0.1515

6 0

3 years ago

Efetue:

rjkz [21]

A. +60
B. +80
C. + 742
D. -919

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3 years ago