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butalik [34]
3 years ago
6

The following two triangles have the same angles, and are similar. What is the ratio of height to base for the triangles?

Mathematics
2 answers:
liq [111]3 years ago
7 0

Answer:  The correct option is (A) 0.75.

Step-by-step explanation: Given that the two right-angled triangles in the figure are similar. We are to find the ratio of the height to the base for the triangles.

In the first triangle,

height, h = 6 units  and  base, b = 8 units,

In the second triangles,

height, h' = 3 units  and  base, b' = 4 units.

Since the two triangles are similar, so the corresponding sides will be proportional.

We can see that

\dfrac{h}{h'}=\dfrac{b}{b'}=\dfrac{6}{8}=\dfrac{3}{4}=0.75.

Hence, we can write

\dfrac{h}{b}=\dfrac{h'}{b'}=0.75

Therefore, the ratio of the height to the base of the triangles is 0.75.

Thus, (A) is the correct option.

alexgriva [62]3 years ago
3 0
Height to base =  3 : 4  or 0.75
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Step-by-step explanation:

c° = 180- 58 - 48 = <em><u>74</u></em><em><u>°</u></em>

b° = <em><u>48</u></em><em><u>°</u></em>

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Math scores on the SAT exam are normally distributed with a mean of 514 and a standard deviation of 118. If a recent test-taker
LuckyWell [14K]

Answer:

Probability that the student scored between 455 and 573 on the exam is 0.38292.

Step-by-step explanation:

We are given that Math scores on the SAT exam are normally distributed with a mean of 514 and a standard deviation of 118.

<u><em>Let X = Math scores on the SAT exam</em></u>

So, X ~ Normal(\mu=514,\sigma^{2} =118^{2})

The z score probability distribution for normal distribution is given by;

                              Z  =  \frac{X-\mu}{\sigma} ~  N(0,1)

where, \mu = population mean score = 514

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Now, the probability that the student scored between 455 and 573 on the exam is given by = P(455 < X < 573)

       P(455 < X < 573) = P(X < 573) - P(X \leq 455)

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       P(X \leq 2.9) = P( \frac{X-\mu}{\sigma} \leq \frac{455-514}{118} ) = P(Z \leq -0.50) = 1 - P(Z < 0.50)

                                                         = 1 - 0.69146 = 0.30854

<em>The above probability is calculated by looking at the value of x = 0.50 in the z table which has an area of 0.69146.</em>

Therefore, P(455 < X < 573) = 0.69146 - 0.30854 = <u>0.38292</u>

Hence, probability that the student scored between 455 and 573 on the exam is 0.38292.

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egoroff_w [7]

Answer:

It has to burn at a rate of 2.25 cm per hour.

Step-by-step explanation:

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