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nataly862011 [7]
3 years ago
11

Find the value of X. to 67° 56°

Mathematics
2 answers:
aleksley [76]3 years ago
8 0
<h3>Answer:   x = 57</h3>

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

Explanation:

The three angles of any triangle always add to 180

x+67+56 = 180

x+123 = 180

x+123-123 = 180-123 .... subtract 123 from both sides

x = 57

The missing angle is 57 degrees

-------------

Check:

x+67+56 = 57+67+56 = 180

Answer is confirmed.

Fiesta28 [93]3 years ago
3 0

Answer:

x = 57

Step-by-step explanation:

180 degrees in a triangle

67 + 56 = 57

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Four and seventy-two thousandths
erica [24]

Answer:

4.072

Step-by-step explanation:

4 0
3 years ago
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In order to estimate the mean amount of time computer users spend on the internet each​ month, how many computer users must be s
levacccp [35]

Answer:

1877 computer users

Step-by-step explanation:

We have that for 95% of confident, the value of z has a value of 1.96 (attached table about it), they also mention the margin of error (E) that is 10 and finally the standard deviation (sd) that has a value of 221.

We apply the following formula:

n = [z * sd / E] ^ 2

replacing:

n = [1.96 * 221/10] ^ 2

n = 1876.27

that is, the minimum sample size is 1877

7 0
2 years ago
Solve the system of inequalities to decide if the point (-3,2) is part of the solution; y&lt;=-4x-3, +8y&gt;=7
inna [77]

Answer:

(x,y) = (-3,2) is a solution

Step-by-step explanation:

Given

y \le -4x + 3

x + 8y \ge 7

Required

Determine if (x,y) = (-3,2) is a solution

y \le -4x + 3 becomes

2 \le -4 * -3 + 3

2 \le 15 --- this is true

x + 8y \ge 7

-3+ 8 * 2 \ge 7

13 \ge 7 --- this is also true

Hence,

(x,y) = (-3,2) is a solution

6 0
2 years ago
Solve the following equation: x÷3-5=-7
Elodia [21]

Answer:

- 6

Step-by-step explanation:

Step 1:

x ÷ 3 - 5 = - 7   Equation

Step 2:

x ÷ 3 = - 2   Add 5 on both sides

Answer:

x = - 6   Multiply 3 on both sides

Hope This Helps :)

3 0
2 years ago
You get tired of the sand and head up to the amusement park. You can purchase 20 ride tickets for $14 or you can purchase 30 rid
Helga [31]

Answer:

The one with the better deal would be 30 ride tickets for $22.50 this is because you pay less money for more rides.

Step-by-step explanation:

First you divide 20 by 14. Doing this will give you the cost of a ride per ticket.

20/14 = 1.42

Then you do the same thing to 30 and 22.50.

30/22.50 = 1.30

Last you compare which deal has less money per ride.

1.42 > 1.30

5 0
3 years ago
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