What is 84/5 divided by 4 =

How many soultions does 5(x-3)+6=5x-9

olya-2409 [2.1K]

5(x - 3) + 6 = 5x - 9 has no solution

Solution:

We have to find the number of solutions for the given equation

Given equation is:

5(x - 3) + 6 = 5x - 9

Multiply the terms inside with bracket with constant outside the bracket

5x - 15 + 6 = 5x - 9

Add the constants in left hand side of equation

5x - 9 = 5x - 9

If the coefficients are the same on both sides, then the sides will not equal, therefore no solutions will occur.

Here, 5x - 9 = 5x - 9

The coefficients are same in both sides of equation

Therefore, the equation has no solution

5 0

3 years ago

Find x. A. 6√6 B. 18 C. 9√2 D. 24√3

evablogger [386]

Answer:

C

Step-by-step explanation:

3 0

3 years ago

Kanna Kamui let her DS charge for 108 minutes from 05%. What percent charge is Kanna's DS.

34kurt

Answer:

The percent charge of Kanna's DS is 50%

Step-by-step explanation:

we know that

A Nintendo DS takes 4 hours to charge fully (100%)

4 hours is the same that 240 minutes

using proportion

Find out what percentage represent 108 minutes

$\frac{100}{240}\ \frac{\%}{min} =\frac{x}{108}\ \frac{\%}{min}\\\\x=100(108)/240\\\\x=45\%$

Remember that

Kanna Kamui charge her DS from 5%

so

$5\%+45\%=50\%$

therefore

The percent charge of Kanna's DS is 50%

3 0

3 years ago

Recently, a new drug has been announced that claims to make Hulks less angry. The company claims that it will benefit those who

Lera25 [3.4K]

Answer:

Test statistic

|Z| = 2.105632 > 1.96 at 0.05 level of significance

Null hypothesis is rejected at 0.05 level of significance

There is difference exist between the drug group and placebo group

Step-by-step explanation:

Step(i):-

Given each group was made up of 150 Hulks. 78 of them reported an improvement from the placebo group.

first sample proportion

$p^{-} _{1} = \frac{78}{150} = 0.52$

Second sample proportion

$p^{-} _{2} = \frac{96}{150} = 0.64$

a) Null Hypothesis : H₀ : There is no difference exist between the drug group and placebo group

H₀ : p₁ = p₂

Alternative Hypothesis : H₁ : There is difference exist between the drug group and placebo group

H₀ : p₁ ≠ p₂

b)

Step(ii):-

$Z = \frac{p_{1} -p_{2} }{\sqrt{PQ(\frac{1}{n_{1} } +\frac{1}{n_{2} } }) }$

where

$P = \frac{n_{1} p^{-} _{1} + n_{2} p^{-} _{2} }{n_{1}+n_{2} }$

$P = \frac{150 X 0.52+ 150 X 0.64}{150+150 }$

P = 0.58

Q = 1- P = 1- 0.58 = 0.42

$Z = \frac{p_{1} -p_{2} }{\sqrt{PQ(\frac{1}{n_{1} } +\frac{1}{n_{2} } }) }$

$Z = \frac{0.52 -0.64}{\sqrt{0.58 X 0.42(\frac{1}{150 } +\frac{1}{150 } }) }$

Z = -2.105632

|Z| = |-2.105632| = 2.105632

Level of significance = 0.05

Z₀.₀₅ = 1.96

Final answer:-

|Z| = 2.105632 > 1.96 at 0.05 level of significance

Null hypothesis is rejected at 0.05 level of significance

There is difference exist between the drug group and placebo group

8 0

3 years ago

In the regular decagon shown, what is the measure of angle 1?

Vadim26 [7]

Polygons 10 sides, interior angle = 144°
m<1 = 180 - 144 = 36

answer
36

8 0

3 years ago

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