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3 years ago

The two triangles are similar. Find the unknown variables.

Mathematics

1 answer:

iogann1982 [59]3 years ago

7 0

Answer:

i thought it is 18 since 4 x3 =12 then 6x3 =18 I am not sure 100%

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Dmitrij [34]

9514 1404 393

Answer:

A) (-6, 8)

B) (x, y) ⇒ (-x, y)

Step-by-step explanation:

B) The rule for reflection across the y-axis is that the x-coordinate changes sign:

(x, y) ⇒ (-x, y)

A) To find the pre-image point, one can simply reflect the image back across the y-axis:

A'(6, 8) ⇒ A(-6, 8)

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2 years ago

Find the measure of Angle b - ONLY TYPE THE NUMBER (if you write the number with anything else, it will be counted incorrect by

Alina [70]

Answer:

Step-by-step explanation:

90 degrees - 25 degrees = 65 degrees

5 0

3 years ago

The researcher trains a sample of 16 individuals in mindfulness and then collects data on how long they spend eating per day. Th

Mila [183]

Answer:

The calculated t-value is t=0.47.

Step-by-step explanation:

<em>The question is incomplete:</em>

<em>"Americans typically eat quickly and do not spend time enjoying their meal. A researcher plans to test if those trained in mindfulness will take more time to enjoy their meal (that is, they will spend more time eating than the general population). The general population spends an average of 68 minutes per day combined eating their three meals. The researcher trains a sample of 16 individuals in mindfulness and then collects data on how long they spend eating per day. The sample mean for those trained in mindfulness equals 74; the SS = 150. What is the calculated t-value? Round your answer to two decimal places."</em>

The degrees of freedom are (n-1)=(16-1)=15

The standard deviation is:

$s=\sqrt{\frac{SS}{n-1}}=\sqrt{\frac{150}{16-1}}=\sqrt{10}=3.16$

The t-value can be calculated as:

$t=\frac{M-\mu}{\sigma/\sqrt{n}} =\frac{74-68}{3.16/\sqrt{16}} \\\\t=\frac{6}{3.16*4}=\frac{6}{12.64}= 0.47$

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3 years ago

HELP ASAP PLEASE

Serga [27]

Answer:

Step-by-step explanation:

The bases of a triangular prism are equilateral triangles, since they have equal sides: 5, 5, and 5

yes, since if all lateral faces are rectangles, rectangles are formed from 4 perpendicular segments, thus, if all edges of the lateral faces are perpendicular, then they are rectangles

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3 years ago

FREE BRAINLIEST! if you can answer this correctly ill give you brainliest and answer some of the questions you have posted :) th

sertanlavr [38]

Answer:

-9 1/4

Step-by-step explanation:

3 0

3 years ago

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