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3 years ago

Simplify 2(3x – 1) + 4x.

Mathematics

1 answer:

Zolol [24]3 years ago

8 0

Answer: the answer is A. which is 10x-2

Step-by-step explanation:

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3 < -5n + 2n Please show your work! Just in number form!

vovangra [49]

Answer:

[See Below]

Step-by-step explanation:

✦ Combine like terms:

✧ -5n + 2n = -3n

✦ Rewrite:

✧ 3 < -3n

✦ Divide:

✧ 3 / -3 = -1

So n = -1.

~<em>Hope this Helps Mate. If you need anything feel free to message me. </em>

8 0

3 years ago

Read 2 more answers

Of 560 samples of seafood purchased from various kinds of food stores in different regions of a country and genetically compared

frutty [35]

Answer:

a) (0.5256,0.5944)

c) Criticism is invalid

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 560

Proportion of mislabeled = 56%

$\hat{p} = 0.56$

a) 90% Confidence interval:

$\hat{p}\pm z_{stat}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

$z_{critical}\text{ at}~\alpha_{0.05} = \pm 1.64$

Putting the values, we get:

$0.56\pm 1.64(\sqrt{\dfrac{0.56(1-0.56)}{560}}) = 0.56\pm 0.0344\\\\=(0.5256,0.5944)$

b) Interpretation of confidence interval:

We are 90% confident that the true proportion of all seafood in the country that is mislabeled or misidentified is between 0.5256 and 0.5944 that is 52.56% and 59.44%.

c) Validity of criticism

Conditions for validity:

$np > 10\\n(1-p)>10$

Verification:

$560\times 0.56 = 313.6>10\\560(1-0.56) = 246.4>10$

Both the conditions are satisfied. This, the criticism is invalid.

8 0

3 years ago

PLZZ answer number 4 I will give you 100 pointd for andwring both parts

elena-s [515]

there are total 3 diffrent shades

because

(i) A = C = 1/2 so one shade

(ii) B=D =F = 2/3 so one shade

(iii) E = 5/8 one shade

so total 3 different shade

b )

(i) y = 1/2 b

(ii) y = (2/3) b

(iii) y = 5/8 b

5 0

3 years ago

The base of a triangle is 6centimeter 50 millimeter

NARA [144]

Red Given:

Length of base is "6cm50mm"
length of base= 11cm
Height is "400mm"
height= 40 cm

Red Solution:

Area of triangle =1/2bh
ar.(triangle)=1/2(11cm)(40cm)
ar.(triangle)=(11cm)(20 cm)

Orange ar.(Triangle)=220cm^2

7 0

3 years ago

Read 2 more answers

If you are at school, then you are working hard. If you are working hard, then you will get good grades. Use a law of logic to d

ozzi

D. If you are working hard, then you will get good grades.

6 0

3 years ago