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Jlenok [28]
2 years ago
8

The length of the base of an isosceles triangle is x. The length of a leg is 4x - 7. The perimeter of the triangle is 31. Find x

.
Mathematics
1 answer:
dexar [7]2 years ago
4 0

Answer:

x= 5

Step-by-step explanation:

am isosceles triangle has 2 sides equal i.e the legs.

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Y is greater than or equal to -×-5
Katen [24]

Answer:

Y<u>></u>-x-5

Step-by-step explanation:

6 0
3 years ago
What is the area of the rectangle? Show ALL your work! Do not round at any point!
faust18 [17]

First lets work out the length of the top side which joins the points (-1,7) and (-5,5):-

this =  sqrt ( (7-5)^2 + (-1 - (-5)^2 )

=  sqrt (4 + 16)

= sqrt 20

Now find length of the longer side which is distance between the points (-1,7) and (4, -3)

this is sqrt ( (-1 - 4)^2 +  (7 - -3)^2)

= sqrt  125

Area of the rectangle = sqrt 20 * sqrt 125

= sqrt 2500

= 50 units^2  Answer

6 0
3 years ago
Trigonometry problem help please and thank you find angle wxz photo of problem is attached ​
Ksenya-84 [330]

Answer:

wxz = 25°

Step-by-step explanation:

way = 90

zxy = 65

So wxz = 25

Hope it helps you

5 0
2 years ago
the angle of depression is measured from the top of a 43 ft tower to a reference point on the ground. its value is found to be 6
Dafna1 [17]
An angle of depression is the angle of a slant to the upper horizontal line. The official definition is: <span>the </span>angle<span> formed by the line of sight and the horizontal plane for an object below the horizontal.

Thus, for this problem, we must use trigonometry. The tower is perpendicular to the upper horizontal and the ground, so after we draw a line connecting the points we get 90 - 63 = 27, which is one of the angles in the right triangle.

The other angles are ninety and 63. We wish to find the measure of the bottom of the triangle, so we use tangent which includes both legs.

Therefore, tan(27)=x/43. Plugging this into a calculator, we get roughly 21.9.

Hope this helped! It probably sounds a lot harder than it actually is without a picture.</span>
5 0
3 years ago
Can anyone help with 20-22?
aliina [53]

Answer:

zx would equal 19 as well

wt=4.5

wy=19

Step-by-step explanation:

this is easy speacily since i am in 8th grade lol

3 0
3 years ago
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