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Whitepunk [10]
3 years ago
11

Your friend evaluates (10 – k) = 5 for k= 5, and gets 9 for an answer. Explain your friend's error.

Mathematics
1 answer:
zavuch27 [327]3 years ago
3 0
5(568282x52782(bhsjsjns
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Which is the height of the triangle?<br> ( PIC IS PROVIDE PLS HELP ME)
zysi [14]
<h3>Answer: 80 meters</h3>

This is an isosceles triangle. The dashed line is the height which is perpendicular to the base 120. The height is always perpendicular to the base. The dashed line cuts the base into two equal pieces (this only works for isosceles triangles when you cut at the vertex like this).

So we have two smaller triangles each with a base of 60 and a height of x. Focus on one of the right triangles and use the pythagorean theorem to solve for x.

a^2 + b^2 = c^2

x^2 + (60)^2 = (100)^2

x^2 + 3600 = 10000

x^2 = 10000 - 3600

x^2 = 6400

x = sqrt(6400)

x = 80

Each smaller right triangle has side lengths of 60, 80, 100

Note the ratio 60:80:100 reduces to 3:4:5. A 3-4-5 right triangle is a very common pythagorean primitive.

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3 years ago
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PLEASE HELP! I don’t understand how to do it :(
SVEN [57.7K]

r/s ×3

calculate the product

r×3/s

use the commutative property to reorder the terms

Answer : 3r/s

PLEASE MARK ME AS BRAINLIEST

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3 years ago
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Y equals 8<br> X equals 575<br><br> Solve for slope intercept <br><br> y equals mx + b
zhannawk [14.2K]

y = 8

x = 575

We want to solve for b in the slope-intercept form y = mx + b.

To complete this problem, we need the value of m, the slope. If you know m, then just plug into y = mx + b this way:

8 = 575m + b

3 0
2 years ago
ms.kirk drove 164 miles in the morning and 219 miles in the afternoon.estimate the total number of miles she drove that day.
Licemer1 [7]
164+219=383 is exact for estimate round 164 to 165 or 160 and 219 to 220 so
165+220=385 or 160+220=380
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3 years ago
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Please Help!!! I will Give Brainliest!!!!!
daser333 [38]
It's probably 13.5, it's a right triangle with a 45 degree angle so if I remember correctly that means it's the same
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2 years ago
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