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3 years ago

Use 1.7 as the value of Square root of 3. what is the area of equilateral triangle ABC? ___ sq yds

Mathematics

1 answer:

Zinaida [17]3 years ago

8 0

$A= \frac{a^2 \sqrt{3} }{4} =\frac{a^2 \times 1.7 }{4} =0.425a^2$

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NEED HELP ASAP WILL GIVE BRAINLIEST

saveliy_v [14]

Answer: x=-2 and y=-2

Step-by-step-explaination:

To solve the system of equations you have to cancel out a variable. I chose to cancel out Y. First, the coefficients of y need to be the same in both equations. To do this multiply to the top equation by 2 so you get

2(2x) +2(y) = 2(-6)

4x + 2y = -12

Next, subtract the second equation from the first to cancel out the y’s

4x + 2y =-12

-(-8x + 2y = -12)

————————

12x = -24

Solve

X = -24/12

X=-2

Plug x into the original equation to find y

2(-2) + y = -6

-4 + y = -6

Y = -6 +4

Y=-2

You can substitute x and y into the original equations to double check

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3 years ago

Solving quadratic formulas<br> 8y²-30y+27=2

Bess [88]

Y=5/2, 5/4 your welcome

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3 years ago

What should be the first step in solving 13 y − 14 = 42?

AveGali [126]

Answer:

The first step should be adding 14 to both sides of the equation.

Step-by-step explanation:

14 must be added on both sides of the equation to get 13y by itself. The ultimate goal is to get y by itself if we are solving for y.

Once 14 is added on both sides, you'll get:

13y = 56.

Then 13 would be divided from both sides.

y = 4.3

8 0

3 years ago

Sarah has a cell phone plan that charges $0.12 per minute plus a monthly fee of $21.00. She budgets $65.50 per month for total c

kirill115 [55]

Answer:

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Step-by-step explanation:

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6 0

3 years ago

Solve for x. Show your work.

defon

First solve C
Then make 2 equations to use them
X=22.5

5 0

3 years ago