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Vikki [24]
2 years ago
10

13 Simplify the following expression. -84 = 12 O A. 7 oc. o D. 8 o v

Mathematics
1 answer:
padilas [110]2 years ago
8 0

Answer:

435

Step-by-step explanation:

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The length of a side of an equilateral triangle is 40cm. what is the length of the altitude of the triangle?
podryga [215]

Answer:

20√3 cm

Step-by-step explanation:

Altitude of an equilateral triangle splits it into 2 equal right triangles, it bisects the base and the angle opposite to the base.

<u>Let the altitude be x. Then as per Pythagorean theorem:</u>

  • x² = 40² - (40/2)²
  • x²= 1600 -400
  • x²= 1200
  • x= √1200
  • x= 20√3 cm

<u>Correct choice is</u> the second one

4 0
3 years ago
To the nearest square inch, what is the area of the shaded sector in the circle shown below
egoroff_w [7]
We would need to know the measurements of the circle to answer this  
6 0
3 years ago
Read 2 more answers
Find the areas of the shapes​
likoan [24]

Answer:

both shape together equals 234

Step-by-step explanation:

trapezoid= 14+10/2*4=34

rectangle=10*20=200

8 0
2 years ago
A deli offers up to 12 different toppings on their sub sandwiches how many different 4 topping sandwiches are possible
Rashid [163]
There are 3 because 12 divided by 4 is 3.
4 0
2 years ago
practice factoring a difference of squares. which expressions represent a perfect square monomial and its square root? check all
ohaa [14]

The perfect square monomial and its square root are shown in options 1, 2, and 5.

  • A perfect square in mathematics is an expression that factors into two equally valid expressions. A monomial is a single phrase that is made up of the product of positive integer powers of the constants, variables, and constants. Consequently, a monomial that factors into two monomials that are the same is called a perfect square monomial.
  • 1) 121, 11
  • 11² = 121
  • A perfect square monomial and its square root are represented by this equation.
  • 2) 4x², 2x
  • (2x)² = 4x²
  • A perfect square monomial and its square root are represented by this equation.
  • 3) 9x²-1, 3x-1
  • (3x-1)² = 9x²- 6x +1
  • This phrase does not depict a square monomial and its square root in perfect form.
  • 4) 25x, 5x
  • (5x)² = 25x²
  • This phrase does not depict a square monomial and its square root in perfect form.
  • 5) 49(x^4), 7x²
  • (7x²)² = 49(x^4)
  • A perfect square monomial and its square root are represented by this equation.

To learn more about monomial, visit :

brainly.com/question/9183135

#SPJ4

8 0
1 year ago
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