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3 years ago

Hello, So I cam across this question and im really confused on how to comeplete it. Please could someone help me?

Mathematics

1 answer:

Y_Kistochka [10]3 years ago

6 0

Answer:

Step-by-step explanation:

Using the rule for alternate angles, angle ACD is also 39 degrees.

After finding this, we now have the 2 angles in the triangle: 50 and 39 .

Using this we can calculate the value of the angle adjacent to x: 180 - (50+39) = 91.

X and the adjacent angle are on a straight line so they add up to 180.

so, x = 180 - 91 = 89

Hope this helps.

Please mark brainiest.

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Unit 2 (12 points)

klio [65]

1+3=4

A counterexample is an a example that proves the statement false.

1+3 are not even numbers but they equal an even one, so it just proved the statement wrong.

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3 years ago

It is asking what is the relationship between segment pq and p”q’

nadezda [96]

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4 years ago

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3 years ago

A scale has a percent error of 7%. The scale reads the mass of a book as 450g. Which statement describes what the actual mass of

ozzi

Answer:

The actual mass of the book is between 481 . 5 g and 418 . 5 g.

Step-by-step explanation:

The mass of the book on the scale = 450 g

The percentage error in the scale = 7%

So, the actual mass of the book is 450 g ± 7%

Now, 7 % of the mass 450 g = $\frac{7}{100} \times 450 = 31.5$

⇒ 7% of 450 g = 31.5 g

Now, the Actual mass of the book = 450 g ± 31.5 g

450 g + 31.5 g = 481 . 5 g

450 g - 31.5 g = 418 . 5 g

Hence the actual mass of the book is between 481 . 5 g and 418 . 5 g.

5 0

3 years ago

cake batter poured into a pan creates a circular batter pattern whose radius increases at a constant rate of 1 in/sec. at what r

docker41 [41]

Answer:

8 π .

Step-by-step explanation:

radius increases at a constant rate of 1 in/sec.

dr / dt = 1

where r is radius .

radius after 4 sec

r = 1 x 4 = 4 in

area A = π r²

differentiating both sides

dA / dt = 2 π r dr / dt

Putting dr / dt = 1 , r = 4 in

dA / dt = 2 π x 4 x 1

= 8 π sq in per sec.

Area increases at the rate of 8 π per sec.

6 0

3 years ago