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RideAnS [48]
3 years ago
10

Help this is timed please

Mathematics
1 answer:
katovenus [111]3 years ago
3 0

Answer:

34

Step-by-step explanation:

from straight line

(x+12) + 100 + x = 180

2x + 112 = 180

2x = 180 – 112 = 68

x = 34

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yaroslaw [1]
A right triangle.it has one right angle and it is not a square.

8 0
3 years ago
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If using the method of completing the square to solve the quadratic equation x^2-9x+2=0 which number would have to be added to "
zmey [24]

The number that would have to be added to complete the square is 81/4.

<h3>What is a Quadratic Equation ?</h3>

Quadratic equations are polynomials of degree 2 , It is represwented by ax² + bx +c = 0.

The quadratic equation given is

x² -9x +2 = 0

x² -9x + (81/ 4) - (81/4) + 2 = 0

x² -9x + (9/2)² - (81/4) +2 = 0

(x - 9/2)²  - (73/4) = 0

Therefore , 81/4 will be added to complete the square to solve the quadratic equation.

To know more about Quadratic Equation
brainly.com/question/2263981

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3 0
2 years ago
4. Which proportion can be used to find 65% of 90?
ella [17]

Answer:

  • C. 65/100 = x/90

Step-by-step explanation:

<u>Finding 65% of 90</u>

  • x = 65*90/100

or

  • x/90 = 65/100

Option C is correct

6 0
3 years ago
How to do 42 x 31 multiplication and 24 x 65
dlinn [17]
42
x31
------
1 42
+1260
---------
1302


Step 1: 1×2 then 1×4
Step 2: 3×2 then 3×4
Step 3: Solve and for 2nd colum add a place holder
Step 4: Carry the regrouped number
Step 5: Do the same with the next problem
Step 6: If needed add the 2 products together
3 0
3 years ago
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Find each angle measure. ( Diagrams are not drawn to scale.)​
irina1246 [14]

Answer:

1-141

2-39

3-141

Step-by-step explanation:

180-39=141

1 and 3 look the same size and 2 looks the same as c (39°) so you jsut fill in for the letters

I'm pretty sure this is right

4 0
3 years ago
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