3 years ago

Róndelo draws the semicircle shown at the right what is the area of the semicircle

Mathematics

1 answer:

Stels [109]3 years ago

4 0

The area is 307.72 yds

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Which expression represents the sum of (2x - 5y) and (x + y)

Hatshy [7]

Answer:

-10y

Step-by-step explanation:

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3 years ago

A poll found that 58% of U.S. adult Twitter users get at least some news on Twitter. The standard error for this estimate was 2.

Radda [10]

Answer: (53.49%, 62.51%)

Step-by-step explanation:

Given : A poll found that 58% of U.S. adult Twitter users get at least some news on Twitter.

i.e. p= 0.58

The standard error for this estimate was 2.3%

i.e. S.E.=0.023

Critical value for 95% confidence : $z_{\alpha/2}=1.96$

Confidence interval : $p\pm z_{\alpha/2}(S.E.)$

i.e. $0.58\pm (1.96)(0.023)$

$=0.58\pm 0.04508=(0.58-0.04508,\ 0.58+0.04508)\\\\=(0.53492,\ 0.62508)=(53.492\%,\ 62.508\%)=(53.49\%,\ 62.51\%)$

Conclusion : We are 95% confident that the true population proportion of U.S. adult Twitter users who get some news on Twitter falls in interval (53.49%, 62.51%)

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4 years ago

-49-X = -8x + 70<br> helppp

Afina-wow [57]

Answer:

x=17

Step-by-step explanation:Get everything to one side by using addition and subtraction and combine like terms. Once you have that set it equal to zero and put the b in Mx+b on the other side then divide it by m and you’ll have x

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3 years ago

642 x 115 worked out ?

lys-0071 [83]

Answer:

642x115=73830

Step-by-step explanation:

does that help?

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Sally has six flowers. Three of the flowers are yellow. The rest are red. How many are red? Draw the flowers. Write the number b

Ivan

Ok uhhh if Sally has 6 flowers and 3 of them are yellow and you are looking for the red which is the rest except yellow then it would be 6 - 3 because total minus yellow = red so there are 3 red flowers.

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3 years ago

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