All categories

3 years ago

(2.x - y + 3z = -3

Mathematics

1 answer:

Marina CMI [18]3 years ago

7 0

Answer:

The solution is (x, y, z) = (6, 4, 3).

You might be interested in

H = (0.24)I^2Rt, solve for R.

boyakko [2]

Answer:

Step-by-step explanation:

3 0

3 years ago

The ratio of the drummers to guitar players who tried out for a band is 28:14. If there are 84 drummers,how many musicians are t

tino4ka555 [31]

Answer: 42

Step-by-step explanation:

28 : 14 = 84 : 42

6 0

3 years ago

Read 2 more answers

The perimeter of a rectangle is 13 cm and its width is 2 ¾ cm. Find its length in cm.

N76 [4]

Answer:

length = 3 3/4

Step-by-step explanation:

13 = 2(2 3/4) + 2l

13 = 2(11/4) + 2l

13 = 22/4 + 2l

52/4 - 22/4 = 2l

30/4 = 2l

30/4 ÷ 2 = l

30/4 x 1/2 = l

30/8 = l

length = 15/4 or 3 3/4

6 0

3 years ago

Refer to the previous exercise. The researchers wanted a sufficiently large sample to be able to estimate the probability of pre

Maru [420]

Answer:

The large sample n = 117.07

Step-by-step explanation:

Step(i):-

Given that the estimate error (M.E) = 0.08

The proportion (p) = 0.75

q =1-p = 1- 0.75 =0.25

Level of significance = 0.05

Z₀.₀₅ = 1.96≅ 2

Step(ii):-

The Marginal error is determined by

M.E = $\frac{Z_{0.05} \sqrt{p(1-p)} }{\sqrt{n} }$

$0.08 = \frac{2 X \sqrt{0.75(1-0.75)} }{\sqrt{n} }$

Cross multiplication , we get

$\sqrt{n} = \frac{2 X \sqrt{0.75(1-0.75)} }{0.08 }$

√n = $\frac{2 X0.4330}{0.08} = 10.825$

squaring on both sides , we get

n = 117.07

Final answer:-

The large sample n = 117.07

6 0

3 years ago

Just answer no worker needed to show

tekilochka [14]

Answer:

Therefore, the correct answer is 24,069,100.

Step-by-step explanation:

(6.91 x 10^4) = 6.91 x 10,000 (10 x 10 x 10 x 10) or 69,100.

(2.4 x 10^7) = 2.4 x 10,000,000 (10 x 10 x 10 x 10 x 10 x 10 x 10) or 24,000,000.

24,000,000 + 69,100 = 24,069,100

Therefore, the correct answer is 24,069,100.

Hope this helps! :D

4 0

3 years ago