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3 years ago

Help asap ill give brainliest

Mathematics

2 answers:

sp2606 [1]3 years ago

5 0

Answer:18

4x +108=180

Step-by-step explanation:

svetlana [45]3 years ago

4 0

Answer:

x=18

Step-by-step explanation:

a straight angle is a total of 180 degrees so you subtract 108 from 180 to get 72 and then divide by 4 to get 18

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Find the value of a. then find the angle measures of the polygon

Furkat [3]

Answer is 2a=120 and a=60
2a+2a+a+a=360
6a=360
a=60

2a
2(60)=120

4 0

3 years ago

A random sample of 133 people was taken from a very large population. Sixty-five of the people in the sample were females.The st

rjkz [21]

Answer: 0.0433

Step-by-step explanation:

Given: Sample size : n= 133

The number of females in sample = 65

Then the proportion of females : $P=\dfrac{65}{133}$

The formula to calculate the standard error of the proportion is given by :-

$S.E.=\sqrt{\dfrac{P(1-P)}{n}}$

$\Rightarrow S.E.=\sqrt{\dfrac{\dfrac{65}{133}(1-\dfrac{65}{133})}{133}}\\\\\Rightarrow\ \Rightarrow S.E.=0.0433444676341\approx0.0433$

Hence, the standard error of the proportion of females is 0.0433.

6 0

3 years ago

Find the missing number in this proportion. 7/35=28/? 120 140 180 190

bogdanovich [222]

Let, the missing number = x
Then, 7/35 = 28/x
1/5 = 28/x
x = 28 * 5
x = 140

In short, Your Answer would be Option B

Hope this helps!

6 0

4 years ago

Read 2 more answers

3/4x+2= 3/8x-4 Find x

Artist 52 [7]

Answer: $x=-16$

Subtract 3/8x from both sides

$\frac{3}{4} x+2-\frac{3}{8} x=\frac{3}{8} x-4-\frac{3}{8} x$

$\frac{3}{8} x+2=-4$

Subtract 2 from both sides

$\frac{3}{8} x+2-2=-4-2$

$\frac{3}{8} x=-6$

Multiply both sides by 8/3

$(\frac{8}{3} x)*(\frac{3}{8} x)=(\frac{8}{3} )*-6\\x=-16$

5 0

4 years ago

49.8751 correct to 4 significant figures

ella [17]

Step-by-step explanation:

$49.8751 = 49.88$

7 0

3 years ago

Read 2 more answers