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Anton [14]
3 years ago
6

Which of the triangles shown are right triangles?

Mathematics
2 answers:
crimeas [40]3 years ago
7 0
The answer is both triangles A and D







Hope this helps :)
Lena [83]3 years ago
5 0

triangle A and triangle D

hope it helps!

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If X=3, What is the area of a triangle with sides, 6x ,7x, and 21x? A.117 in² B.378 in² C.189 in² D. 58.5 in²
AURORKA [14]

Answer:

The given sides does not form a triangle

Step-by-step explanation:

The given sides does not form a triangle

We know the triangle property which states that the sum of any two sides of the triangle should be greater than the third side.

Here given th esides of the triangle are 6x,7x,21x

6x+7x=13x < 21x

for any value of x the above equation does not satisfy.

8 0
3 years ago
Pls answer this math problem
ankoles [38]

Answer:

  -5

Step-by-step explanation:

Substituting x=4 into the equation gives a 2-step linear equation in y. It is solved by isolating the variable and making its coefficient be 1.

__

<h3>use x=4</h3>

When x=4, the equation becomes ...

  -3x +9y = -57

  -3(4) +9y = -57

  -12 +9y = -57

<h3>solve 2-step equation</h3>

The <u>first step</u> is to "isolate" the variable term (9y) by adding the opposite of the constant that is on the same side of the equation. The result is that the variable term is by itself on one side of the equal sign.

  -12 +12 +9y = -57 +12 . . . . . add the opposite of -12

  9y = -45 . . . . . . . . . . . . . . simplify

The <u>second step</u> is to make the coefficient of y be 1. We do that by multiplying by its inverse, 1/9. Equivalently, we divide by 9.

  (1/9)(9y) = (1/9)(-45) . . . . multiply by the inverse of 9

  y = -5 . . . . . . simplify

6 0
2 years ago
Luis earns a base salary of \$150.00$150.00 every week with an additional 14\%14% commission on everything he sells. Luis sold \
tester [92]

Answer: Luis earned $997.00 for last week.

$6,050.00 - 14%= $5,203.00

Just figure the difference ($847)

Then add his base salary.

4 0
3 years ago
Find the value of x in the parallelogram
max2010maxim [7]
A 8 as the 2 labelled lengths will be the same; 2 x 8 = 16
4 0
3 years ago
Read 2 more answers
The interior angles formed by the sides of a quadrilateral have measures that sum to 360°.
hammer [34]

Answer:

<em>x = 59</em>

Step-by-step explanation:

<u>Equations</u>

The interior angles formed by the sides of a quadrilateral have measures that sum to 360°.

The image shows a four-sided polygon and its four angles measures, thus we sum them all and equate the sum to 360:

x + x + 2x + 3 + 2x + 3 = 360

Simplifying:

6x + 6 = 360

Subtracting 6:

6x = 354

Dividing by 6:

x = 354/6

x = 59

5 0
3 years ago
Read 2 more answers
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