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SVEN [57.7K]
3 years ago
14

What is 12 + 4y = -4x

Mathematics
1 answer:
Ivan3 years ago
4 0

Answer:

ummmm

Step-by-step explanation:

u already answer ur own question tho?

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In a​ circle, a 90degrees sector has area 144pi in2. What is the radius of the​ circle?
RUDIKE [14]

Answer:

The radius of the circle is 24 inches.

Step-by-step explanation:

Central angle in a sector is 90 degrees

Area of a sector is 144\pi\ \text{inch}^2

The area of sector is given by the formula as follows :

A=\dfrac{\theta}{360}\pi r^2

r is the radius of circle

r=\sqrt{\dfrac{360 A}{\theta \pi}} \\\\r=\sqrt{\dfrac{360 \times 144\pi }{90\times \pi}} \\\\r=24\ \text{inch}

So, the radius of the circle is 24 inches.

6 0
4 years ago
I need help please....
Semmy [17]

Answer:x=-7

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Can I pls use you’re help plssss
Deffense [45]

Answer:

maybe it's 9 not sure though if it's wrong sorry

8 0
3 years ago
PLZ HELPPP PLZZZZ
kolbaska11 [484]
Zoe gives Dev 7 shells

If you subtract 55-7 you get 48 and if you add 9+7 you get 16 and when you multiply 16(3) you get 48 so there’s the answer
8 0
4 years ago
A 2018 poll of 3603 randomly selected users of a social media site found that 1697 get most of their news about world events on
coldgirl [10]

Answer:

Reject H0; there is significant evidence that the proportion of site users who get their world news on this site has changed since​ 2013 and is significantly different from 45%

Step-by-step explanation:

Sample size, n = 3603

x = 1697

Phat = x/n = 1697/3603 = 0.4709 =47.09%

H0 : p = 0.45

H1 : p > 0.45

The test statistic :

(phat - p) / sqrt[(p(1 - p)) /n]

(0.4709 - 0.45) / sqrt[(0.45(0.55))/3603]

0.0209 / 0.00828810932

Test statistic = 2.5217

The Pvalue :

Using the Pvalue from Test statistic calculator ; α = 0.05 ;

Pvalue at 95% confidence = 0.005839

Pvalue < α ;

Hence, we reject the Null

Therefore, we conclude that the sample gives evidence that the proportion of site users who get their world news on this site has changed since​ 2013.

7 0
3 years ago
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