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3 years ago

Solve for k.

Mathematics

2 answers:

elixir [45]3 years ago

4 0

Answer:

1/7 m

Step-by-step explanation:

Look at the picture above.

Hope this helps.

Dominik [7]3 years ago

4 0

Answer:

$\large\boxed{k=\dfrac{m}{7}}$

Step-by-step explanation:

$8k+2m=3m+k\qquad\text{subtract}\ 2m\ \texy{from both sides}\\\\8k+2m-2m=3m-2m+k\\\\8k=m+k\qquad\text{subtract}\ k\ \text{from both sides}\\\\8k-k=m+k-k\\\\7k=m\qquad\text{divide both sides by 7}\\\\\dfrac{7k}{7}=\dfrac{m}{7}\\\\k=\dfrac{m}{7}$

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SSSSS [86.1K]

(B)
if f(a) = K, then that means f sends (a) to (K).
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3 years ago

Read 2 more answers

Question 3 of 10

anyanavicka [17]

no solution off the bus 60th and you can get

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3 years ago

The mean income per person in the United States is $50,000, and the distribution of incomes follows a normal distribution. A ran

sergij07 [2.7K]

Answer:

Yes. There is sufficient eveidence to support the claim that Wilmington resident's earn more than the national average

Step-by-step explanation:

Given the following;

$\alpha=Significance \ Level=0.05\\n=10\\\bar X=60000\\\ s=sample\ \sigma=10000$

#We set our hypothesis as:

$H_o:\mu\leq 50000\\H_a:\mu>50000$

The rejection region of either hypothesis:

$P(t>t_o)=0.05$ , we determine the critical values for this probability in the T distribution table;

$t=1.833$

=>We reject for all values greater than 1.833, t>1.833.

#We now determine the value of the test statistic as:

$t=\frac{\bar X-\mu_o}{s/\sqrt{n}}\\\\=\frac{60000-50000}{10000/\sqrt{10}}\\\\=3.1623$

We find that:

$t=3.1623>1.833,\ \ \ Reject \ H_o$

Hence, there is sufficient eveidence to support the claim that Wilmington resident's earn more than the national average.

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3 years ago

Multiply. (5v+6w-7)(-3) Simplify your answer.

Zielflug [23.3K]

Answer:

if my calculator is not wrong Is 21

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3 years ago

Evaluate the expression 3.14(a2 + ab) when a = 3 and b = 4. (Input decimals only, such as 12.71, as the answer.)

raketka [301]

Replace a and b with the given values:

3.14(3^2 + 3x4)

Simplify:

3.14(9 +12)

3.14(21)

Multiply:

3.14 x 21 =65.94

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4 years ago