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Liono4ka [1.6K]
3 years ago
11

Please help me!!!! Thank you

Mathematics
1 answer:
serg [7]3 years ago
3 0

\huge  \rm༆ Answer ༄

In the given question, the two sides of the given triangles are parallel, so the the two corresponding angles of the Triangles are equal to one another.

Therefore, the Triangles are similar by AA similarity criteria ~

And since they are similar, the ratio of sides of one Triangle will be equal to ratio of corresponding sides of the other Triangle.

that is ~

  • \sf \dfrac{5}{7}  =  \dfrac{5 + 6}{y}

  • \sf y = 11 \times  \dfrac{7}{5}

  • \sf y =  \dfrac{77}{5}

  • \sf y = 15.4

Hence, value of l = 15.4 units ~

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Solve forx2x=8Give your answer as a fraction in its simplest form.
boyakko [2]

Answer:

x=4

Step-by-step explanation:

2x=8

÷2

x=4

if you want a fraction then  4/1 which is the same thing as saying 4

8 0
3 years ago
Please help me!!!!!!!!
sattari [20]
So hmm notice the picture below

so V = l*w*h

thus   \bf V=lwh\qquad 
\begin{cases}
l=2\\
w=5\\
\end{cases}\implies V=2\cdot 5\cdot h\implies \boxed{V}=10h
\\\\\\
V=\cfrac{m}{d}\qquad 
\begin{cases}
m=mass\\
d=density\\
----------\\
m=10\\
d=0.5
\end{cases}\implies V=\cfrac{10}{0.5}
\\\\\\
\boxed{10h}=\cfrac{10}{0.5}

solve for "h"

4 0
3 years ago
Find the vertex of this parabola y=-2x^2+4x+12
Dmitriy789 [7]

Answer:

(1, 14)

Step-by-step explanation:

To find the vertex, complete the square.

First, factor out the leading coefficient from the first two terms:

y = -2 (x² − 2x) + 12

Now take half of the second coefficient, square it, and add and subtract the result:

(-2/2)² = 1

y = -2 (x² − 2x + 1 − 1) + 12

Factor the perfect square:

y = -2 ((x − 1)² − 1) + 12

Distribute:

y = -2 (x − 1)² + 2 + 12

y = -2 (x − 1)² + 14

So the vertex is (1, 14).

7 0
3 years ago
Find the values of x and y​
alexandr1967 [171]

Hello from MrBillDoesMath!

Answer:

x = 5 * sqrt(2)

5 = y

Discussion:

First thing: the hypotenuse is the side opposite the right (90 degree) angle. So it is side x NOT side y as shown in your diagram.  

The triangle is a 45-45-90 triangle so

tan(45) = y/5            => as tan(45) = 1

1 = y/5                      => multiply both sides by 5

5 = y

If you don't care for the trig approach, since it's a 45-45-90 triangle the length of the legs are that same, i.e y = 5

Also sin(45) = y/x    => as y = 5

sin(45) = 5/x            => as sin(45) = sqrt(2)/2

sqrt(2)/2 = 5/x         => multiply bot sides by x

x* sqrt(2)/2 = 5/x * x = 5   =>

x* sqrt(2)/2 = 5         => divide both sides by sqrt(2)/2

x = 5 * (2/sqrt(2))

x = 5 * sqrt(2)

Or if you don't care for the trig approach, simply apply the Pythagorean theorem ( 5^2 + 5^2 = x^2) and solve for x

Thank you,

MrB

6 0
4 years ago
A photograph measures eleven inches wide and fourteen inches long. The picture is enlarged to fit on a wall. If the new larger p
Nimfa-mama [501]

<h2>D. <u>4</u><u>1</u><u>2</u><u>.</u><u>5</u><u> </u><u>inches</u></h2>

correct me if I am wrong

5 0
3 years ago
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