3 years ago

The triangles are similar.

Mathematics

2 answers:

galben [10]3 years ago

8 0

21 21 beacause 7x3 is 21

myrzilka [38]3 years ago

4 0

21 is the value of x. the bigger triangle is three times the size of the smaller rectangle. so you multiply all of the sides of the smaller triangle by 3 to get the sides of the bigger triangle.

You might be interested in

Graph y=−4/7x+1. do this math

Fofino [41]

Answer:

Use demos or a graphing calc.

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Find the equation of a line through the coordinate (3,−2) and parallel to the line represented by y=12x−2.

denis-greek [22]

Answer:

Step-by-step explanation:

y + 2 = 12(x - 3)

y + 2 = 12x - 36

y =12x - 38

7 0

3 years ago

Camille had $275 in her checking account . she deposited $812 and wrote checks $75, $60, and $48. how much did she have in the a

Elenna [48]

She would have $904. 275 + 812= 1087. 75 + 60 + 48= 183. 1087 - 183 = 904. Check the math to make sure, I did it in my head.

3 0

3 years ago

X = sin 1/2θ, y = cos 1/2θ, −π ≤ θ ≤ π(a) eliminate the parameter to find a cartesian equation of the curve.

Roman55 [17]

First solve for theta in 'x' equation:
$\theta = 2 sin^{-1} x$

Substitute into 'y' equation:
$y = cos (\frac{2 sin^{-1} x}{2}) = cos (sin^{-1} x)$

Simplify by rewriting cos in terms of sine.
Using pythagorean identity: $sin^2 + cos^2 = 1$

$cos = \sqrt{1-sin^2} \\ \\ y = \sqrt{1-sin^2 (sin^{-1} x)}$
Simplify using inverse function property: $f(f^{-1} (x)) = x$

$y = \sqrt{1 - x^2}$

5 0

3 years ago

Read 2 more answers

Sas a ribbon that is 5/6 yard long. She cuts off 3/5 of that ribbon and uses it to tie her hair back. She gives the rest to her

Ivenika [448]

Answer:

7/30

Step-by-step explanation:

5/6 = 25/30 3/5 = 18/30

25/30 - 18/30 = 7/30

Sas gives 7/30 of the ribbon to her sister.

Hope this helps! :3

5 0

2 years ago