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ch4aika [34]
3 years ago
14

What is the side of equilateral triangle is altitude is 10

Mathematics
1 answer:
kotegsom [21]3 years ago
5 0

Answer:

11.55

Step-by-step explanation:

An equilateral triangle is one which all it sides are equal.

10cm altitude means the height is 10cm.

Using Pythagoras theorem,

x² = 10² + (x/2)²

Assume that the side of the triangle is xcm

x² - x²/4 = 100

3x²/4 = 100

x = √(400/3)

x = 11.55cm

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never [62]

Answer:

8:15 am

Step-by-step explanation:

Count back from 9:05 50 minutes. I did it in parts.

First, I went back 5 minutes:

9:05 am 50 minutes elapsed

9:00 am 45 minutes elapsed

Then I went back the rest of the 45 minutes

9:00 am 45 minutes elapsed

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8 0
3 years ago
Read 2 more answers
Which of the following points are on the line given by the equation y equals 2x?
Rina8888 [55]

Answer:

(5,10)

(3,6)

Step-by-step explanation:

The equation y=2x means that 2 multiplied by the first value would equal the second value, so this means that the second value is twice as much as the first value.  This is not true for the first option because 8 is not twice of 16, and this is the same for (4,6), (4,2), and (1,3).  Therefore (5,10) and (3,6) work.

5 0
3 years ago
The area of the region under the curve of the function f(x) = 5x + 7 on the interval [1, b] is 88 square units, where b > 1.
djverab [1.8K]
We are given the area of the region under the curve of the function f(x) = 5x + 7 with an interval [1, b] which is 88 square units where b > 1 

We need to find the integral of the function f(x) = 5x + 7 with the limits 1 and b 

5/2 x^2 + 7x (limits: 1, b)

substitute the limits:

5/2 (1^2) + 7 (1) - 5/2 b^2 + 7b = 0

solve for b

Then after solving for b, this would be your interval input with 1: [1, b].<span />
4 0
2 years ago
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Anton [14]

Answer:

301.59

Step-by-step explanation:

your answer was almost right you just forgot to multiply by 9

4 0
3 years ago
Oof I am really confused on 13. Can someone help me with it? I’ll really appreciate it. Thanks!
Nataly [62]

Hi! I know for sure that a and d are equivalent to the expression which is not what you are looking for. This is because 11 times 8 gives you the 88 on a and if you multiply the 5 also by 8 you get 40 so a is not the answer. The reason I multiply both by the same number and got the equivalency is because, "What you do to one side, you do to the other." Same thing with d. My answer would be B because you can't change the variable to a different number. You can't just give the five the y and make it mean the same. The answer is B.

3 0
2 years ago
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