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IRISSAK [1]
3 years ago
6

A=(-2+4/5)² qual valor de A?

Mathematics
1 answer:
MAVERICK [17]3 years ago
3 0
<span>A=(-2+4/5)² qual valor de A?

</span>A=\left(-2+ \dfrac{4}{5}\right)^2 \\  \\  \\ A=\left( \dfrac{-2*5+4}{5}\right)^2 \\  \\  \\ A=\left( \dfrac{-10+4}{5}\right)^2 \\  \\  \\ A=\left( \dfrac{-6}{5}\right)^2 \\  \\  \\ A=\left( \dfrac{(-6)^2}{(5)^2}\right) \\  \\  \\ \boxed{  A= \dfrac{36}{25} } \\  \\  \\<span>
</span>
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Can someone help me with this please?
AVprozaik [17]

Answer:

y=70°

z= 60°

w= 70°

Step-by-step explanation:

Since the two triangles are similar, we know that all of the corresponding angles must be the same.  On the triangle on the left, we can see that the angle formed between sides AB and AC is 60°.  This means that the same angle is formed at Z, which is in the same location on the triangle to the right.  From there, we can find the missing angle, W, from the difference of 180°.

180°-50°-60°=70°.

The same way we found Z, we can also find Y, since it has to be the same as W.

8 0
2 years ago
A recipe calls for 2 cups of flour to make 24 cookies. write and solve a proportion to find how much flour is needed to make 54
bekas [8.4K]
2 cups of flour          x cups of flour
––––––––––––   =   –––––––––––––
24 cookies                 54 cookies

cross multiply
2*54=24x
24x=108
x=4.5

4.5 cups of flour

8 0
3 years ago
Solve 1 5/7 • x for x = 5/6
VARVARA [1.3K]

Answer:

1 3/7

Step-by-step explanation:

1 5/7 * 5/6

12/7 * 5/6

2/7 * 5/1

10/7*1

10/7

1 3/7

5 0
3 years ago
Read 2 more answers
The frame is being enlarged to hang on a gallery wall. Using the scale factor of 1in=2.5ft., give the new dimensions of the outs
nydimaria [60]
The new lengths will be 17.5 and 12.5
multiply each dimension by the scale factor of 2.5
7 x 2.5 = 17.5
5 x 2.5 = 12.5
Hope this helps!
5 0
3 years ago
Find a quadratic equation with roots -1+4i and -1-4i.
a_sh-v [17]
Hello,

(x-(-1+4i))(x-(-1-4i))=((x+1)-4i)((x+1+4i)
=((x+1)²+16
=x²+2x+17

8 0
3 years ago
Read 2 more answers
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