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Alika [10]
3 years ago
15

How to find missing angles​

Mathematics
1 answer:
aliina [53]3 years ago
5 0

Since we know that a triangle equals to 180 degrees, we should start by adding together the two known angles inside the triangle. To determine to measure of the unknown angle, be sure to use the total sum of 180 degrees. If two angles are given, add them together and then subtract from 180 degrees. If two angles are the same and unknown, subtract the known angle from 180 degrees and then divide by 2.

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Which expression is NOT equivalent to −38⋅(−4+12)? Drag this expression to the box.
lesya [120]

I had this question so here's the answer and explanation! :)

Answer:

The answer to your question is the first option :D

Step-by-step explanation:

Original expression

                                -3/8 (-4 + 1/2)

First option    -3/8 (-4)  + (3/8)(1/2)       This option is not equivalent because

                                                             they forgot the negative sign of the

                                                             second term.

Second option (-3/8)(-4) + (-3/8)(1/2)    This option is equivalent to the

                                                              original. Distributive property

Third option    (-3/2)(-3 1/2)                 This option is equivalent to the original

Fourth option  (-3/8)(-3) + (-3/8)(-1/2)  This option is equivalent to the original

HOPE THIS HELPS :)

5 0
3 years ago
Read 2 more answers
I need help on this question pls​
Ivanshal [37]

Answer:

t = 17.5 f = 12

Step-by-step explanation:

If <em>MNOP </em>is a square, you know that each angle is going to be 90°. To solve, let's first set each equation equal to 90°:

90 = 4t + 20

and

90 = 7f + 6

Then solve both equations:

90 = 4t + 20 \\ 70 = 4t \\ 17.5 = t

and

90 = 7f + 6 \\ 84 = 7f \\ 12 = f

I hope that helps!

7 0
3 years ago
In a sample of 7500 new iphones, 18 were found to be defective. at this rate, how many defective iphones would be expected in a
viva [34]
In 7500 iPhones, 18 were found defective. 
18 of 7500 is 0.24%
0.24% of iPhones were defective.

Using the information above:
In a sample of 60000 new iPhones, 144 would be found defective.
144 of 60000 is 0.24%

Answer: 144 defective iPhones would be expected in a sample of 60,000.

Hope this helps! Good luck. :-)
8 0
4 years ago
Notebook cost $8.50 plus sales tax. After sales tax, The Notebook is $8.86. What is the sale tax rate?
statuscvo [17]

Answer:what is 86-50=36 us the tax rate


Step-by-step explanation:


5 0
3 years ago
Its just a line ;)<br> ___________________
Andrei [34K]

Answer:

I need points

Step-by-step explanation:

hhhccchhxjcjc

4 0
3 years ago
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