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dem82 [27]
2 years ago
13

An equilateral triangle has an altitude of 21 inches. What is the side length of the triangle?

Mathematics
2 answers:
kvv77 [185]2 years ago
4 0
Hey, here’s your answer :)

Lena [83]2 years ago
3 0

here it is it is not my answer but i hope it helps!

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2) A month of the year is randomly selected.
lara31 [8.8K]

Answer:

5/6

Step-by-step explanation:

The months of the year are: January February March April May June July August September October November December

There are 12 months

There are 10 months that do not start with A

P (month that does NOT begin with the letter A)

= number of months that do not start with A / total months

=10/12

 =5/6

3 0
2 years ago
Read 2 more answers
Please help, i forgot which was which... (positive or negative coefficient)
Vesna [10]
<h3>Answer:  Negative</h3>

Reason:

The template y = ax^2+bx+c applies to any quadratic to graph out a parabola. The coefficient for the x^2 term is 'a', and it solely determines whether the parabola opens upward or downward.

If 'a' is negative, then the parabola opens downward. The way to remember this is that 'a' being negative forms a negative frown.

On the other hand if 'a' is positive, then it forms a positive smile, and the parabola opens upward.

In this case, the points are fairly close to a parabola opening downward. This means 'a' is negative and a < 0.

8 0
1 year ago
Determine which of the lines, if any, are parallel or perpendicular. Explain.
hodyreva [135]
Answer:
line a and b are parallel
line c is not perpendicular because it is not 3

step-by-step explanation:
if the slope is the same it is parallel
if the slope is the complete opposite it is perpendicular
lines a and b are parallel with a slope of -1/3
(0, 5) (3, 4)
m = 4 - 5 / 3 - 0
m = -1 / 3
m = -1/3
(-1, 1) (2, 0)
m = 0 - 1 / 2 + 1
m = -1 / 3
m = -1/3
line c is perpendicular to lines a and b the slope is
(0, 0) (2, 5)
m = 5 - 0 / 2 - 0
m = 5/2
2.5
8 0
2 years ago
if a rectangle has an area of 60 square yards and the length is w+4 and the width is w what is the length?
Sergio039 [100]

Answer:

28

Step-by-step explanation:

7 0
3 years ago
Bro help me idk this one q-q <br><br>n × 5 + 4 × 2 - 4 × 3 = 42​
lina2011 [118]

Answer:

n = 9.2

Step-by-step explanation:

Isolate the variable by dividing each side by the numbers that do not contain the variable

7 0
2 years ago
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