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ki77a [65]
4 years ago
11

Complete equation and what property was used 7+(8+12) = _ + 12

Mathematics
2 answers:
Rina8888 [55]4 years ago
6 0
Answer is (7+8) or 15
shusha [124]4 years ago
4 0

Answer:

15

Step-by-step explanation:

first you add 8 plus 12 which is 20 then you add 20 plus 7 that equals 27. after that you subtract 12 from 27 which give you the missing piece of the equation

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How do I solve these equations
Sever21 [200]
You need to know the properties of each function.
Tan is opposite (y) over adjacent (x).  Sin>0 means that sin is positive, therefore, it is located on either quadrant 1 or 2. Tan=4/3  so it is located in quadrant 1.
The side of the triangle must be Adjacent=3  opposite=4 and hypotenuse=5
Now, you are asked to find the half angle of Cos which is 
\sqrt{\frac{1+cos}{2} }
By following the formula, cos=3/5 then:
\sqrt{ \frac{1- \frac{3}{5} }{2} }    Multiply everything (inside the square          \sqrt{ \frac{5+3}{10} }                  root) by 5
\frac{2 \sqrt{2} }{ \sqrt{10} }
\frac{2 \sqrt{20} }{10}                Then just simplify
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3 0
3 years ago
Please help me idk this
Kaylis [27]

Answer:

25

Step-by-step explanation:

since the angle in question is across from angle 70, they are congruent. You set up the equation

70=20+2p

50=2p

25=p

8 0
4 years ago
1.5r-3r+8r+2.5r=<br> please show me what the equation is in simplest form thanks
sladkih [1.3K]

Answer:

12.5r

Step-by-step explanation:

You just add all the numbers together and then add the r at the end it’s pretty easy when you know that

7 0
4 years ago
Identify the equation that correctly shows the given relationship.
mario62 [17]
Picture one: C
Picture two: D
5 0
3 years ago
Read 2 more answers
A hat is 40% off the discount price of a hat is $50.40 what is the regular price
ratelena [41]

Answer:

The correct answer would be $126.00

Step-by-step explanation:

If you see how many times 40% goes into 100%, it would be 2.5 times. Then you multiply the 40% of the overall price ($50.40) times 2.5 and that gives you $126.

Hope this helps!!

3 0
3 years ago
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