Help please!! 30 points to the right answer!!!!

Mathematics

1 answer:

Crank3 years ago

3 0

Answer:

║JF║=75

Step-by-step explanation:

angle JDF = angle JYS ( corresponding angles)

angle JYD = angle JSF ( corresponding angles)

JD/JF=JY/JS=DY/FS

Use JD/JF=JY/JS and substitute:

50/x=42/63, where║JF║

cross multiply

50×63=42×X

3150=42x

divide via by 42

3150/42=42x/42

75=x

x=75

So ║JF║=75

Hope this helps.

You might be interested in

In the general equation of a line, if A = 0, what will the graph of the line look like?

attashe74 [19]

It would be a zero slope

4 0

3 years ago

Read 2 more answers

Lannie ordered 12 copies of the same book for his book club members. The book cost $19 each and the order has a$15 shipping char

ad-work [718]

$(12*19)+15=228+15=243$

The total cost is $243.

4 0

2 years ago

Read 2 more answers

A cone and a triangular pyramid have a height of 9.3 m

Otrada [13]

Answer:

$x=17.1\ in$

Step-by-step explanation:

The complete question is

A cone and a triangular pyramid have a height of 9.3 m and their cross-sectional areas are equal at every level parallel to their respective bases. The radius of the base of the cone is 3 in and the other leg (not x) of the triangle base of the triangular pyramid is 3.3 in

What is the height, x, of the triangle base of the pyramid? Round to the nearest tenth

The picture of the question in the attached figure

we know that

If their cross-sectional areas are equal at every level parallel to their respective bases and the height is the same, then their volumes are equal

Equate the volume of the cone and the volume of the triangular pyramid

$\frac{1}{3}\pi r^{2}H=\frac{1}{3}[\frac{1}{2}(b)(h)H]$