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3 years ago

Need help please!

Mathematics

1 answer:

dimulka [17.4K]3 years ago

5 0

(1) QS bisecting <PQR implies <PQS = <SQR

(2) <PQS=45 deg and (1) imply <SQR also = 45 deg

(3) from (2) it follows that <PQR = <PQS + <SQR = 45 + 45 deg = 90 deg and therefore the triangle is right-angled

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A triangle has a side length of 10 inches and a side length of 3 inches. What could be the length in inches of the third side of

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2 years ago

Each year, all final year students take a mathematics exam. It is hypothesized that the population mean score for this test is 8

drek231 [11]

Answer:

95% Confidence interval: (96.06,103.94)

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 85

Sample mean, $\bar{x}$ = 100

Sample size, n = 30

Alpha, α = 0.05

Population standard deviation, σ = 11

95% Confidence interval:

$\mu \pm z_{critical}\frac{\sigma}{\sqrt{n}}$

Putting the values, we get,

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

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(96.06,103.94) is the 95% confidence interval for the population mean test score.

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3 years ago

Are the two triangles below similar??

kodGreya [7K]

Answer:

Yes

Step-by-step explanation:

If you find the value of all the angles, you'll find that both triangles' angles are 50, 35, and 90 degrees.

(all the angles in a triangle add up to 180)

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2 years ago

Solve the system of equations.

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3 years ago

Read 2 more answers

Solve the value for v.

NemiM [27]

Answer:

Hey mate !!

Your answer is so simple :)

Go through the explanation to understand.

Step-by-step explanation:

In the given question,

We see that 105° and it's adjacent angle (i.e. 8v+3° ) forms a supplementary angle. Which means the sum of 8v+3°+105° is 180°

<h3>Therefore,</h3>

According to the question

$105 + 8v + 3 = 180$

$= > 105 + 8v = 180 - 3$

$= > 8v = 177 - 105$

$= > 8v = 72$

$= > v = \frac{72}{8}$

$= > v = 9$

Answer the value of v is 9° .

Hope it helps you!!

#IndianMurga ツ

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3 years ago