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Vinil7 [7]
3 years ago
15

What is the value of x in the figure please help I’ll give you brainliest :)

Mathematics
2 answers:
Licemer1 [7]3 years ago
8 0

Answer:

37°

Step-by-step explanation:

(4x + 2)° = 150° [Vertically Opposite Angles]

=> 4x = 150 - 2

=> 4x = 148

=  > x =  \frac{148}{4}

=><u> x = 37° (Ans)</u>

finlep [7]3 years ago
4 0
<h2>○=> <u>Correct option</u> :</h2><h2>\color{plum}\bold{(A) \: 37}</h2><h3>○=> <u>Steps to derive correct option</u> :</h3>

Angle (4x+2)° and angle 150° are vertically opposite angles so, their measures will be equal.

Which means :

=\tt 4x + 2 = 150

=\tt 4x = 150 - 2

= \tt4x = 148

=\tt x =  \frac{148}{4}

\hookrightarrow \: \color{plum}x = 37

Let us check whether or not we have found out the correct measure of x by placing 37 in the place of x:

=\tt 4 \times 37 + 2 = 150

= \tt148 + 2 = 150

=\tt 150 = 150

Since the measures of both the angles are equal we can conclude that we have found out the correct value of x.

Thus, the value of x in this figure = 37

Therefore, the correct option is (A) 37.

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Operación 1: (6+(4*12)/12-2)+5​
Julli [10]

Answer:

<h2>13</h2>

Step-by-step explanation:

6+ (4)(12) /12 −2+5

=6+ 48 /12 −2+5

=6+4−2+5

=10−2+5

=8+5

=13

6 0
3 years ago
An environmental group conducted a study to determine whether crows in a certain region were ingesting food containing unhealthy
nydimaria [60]

Part A

Given info:

  • xbar = sample mean = 4.90 ppm
  • s = sample standard deviation = 1.12 ppm
  • n = 23 = sample size

Because n > 30 is not true, and we don't know the population standard deviation (sigma), this means we must use a T distribution.

The degrees of freedom here are n-1 = 23-1 = 22.

At 90% confidence and the degrees of freedom mentioned, the t critical value is roughly t = 1.717

Use a T distribution table or calculator to determine this. If you don't have a calculator for the task, then you can search out "inverse T calculator" and there are tons of free options to pick from.

The margin of error E is

E = t*s/sqrt(n)

E = 1.717*1.12/sqrt(23)

E = 0.400982

This is approximate and accurate to 6 decimal places.

The confidence interval is going to be xbar plus or minus that E value

L = lower bound = xbar - E = 4.90 - 0.400982 = 4.499018 = 4.50

U = upper bound = xbar + E = 4.90 + 0.400982 = 5.300982 = 5.30

The confidence interval in the format of (L, U) is (4.50, 5.30)

You could also express it as the format L < mu < U and it would be 4.50 < mu < 5.30; however, I'll stick to the first method.

<h3>Answer:  (4.50, 5.30)</h3>

=====================================================

Part B

Since we know sigma = 2.6 is the population standard deviation, we can use a Z distribution now.

At 90% confidence, the z critical value is roughly 1.645; use a table or calculator to determine this.

n = \left(\frac{z*\sigma}{E}\right)^2\\\\n \approx \left(\frac{1.645*2.6}{0.03}\right)^2\\\\n \approx 20325.254444 \\\\

Round this up to the nearest integer to get 20326. For min sample size problems, <u>always</u> round up.

<h3>Answer: 20326</h3>
6 0
2 years ago
Hal used the scale 1 inch = 6 feet for his scale model of the new school building. The actual dimensions of
elena-14-01-66 [18.8K]

Answer:

5 inch high

20 inch wide

30 inch long

Step-by-step explanation:

4 0
3 years ago
If n=6 and x=1/6, then n(2-x)=
scoundrel [369]

Answer:

11

Step-by-step explanation:

4 0
3 years ago
a motorcyclist traveled a distance of 120 miles in 2 hours. traveling at the same speed how far would this motorcyclist travel i
olga_2 [115]
120/2 = x/5....120 miles to 2 hrs = x miles to 5 hrs
cross multiply
(2)(x) = (120)(5)
2x = 600
x = 600/2
x = 300....the motorcyclist would travel 300 miles in 5 hrs

or u could do it this way..
120/2 = 60 miles per hr
60 * 5 = 300 miles
5 0
3 years ago
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