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babymother [125]
3 years ago
7

Factor completely 625x4 - 81​

Mathematics
1 answer:
____ [38]3 years ago
7 0

Step-by-step explanation:

625 is square of 25 25 is square of 5 4 is square of 2 81 is square of 9 9 is square of 3

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Find the measure of angle 3​
OlgaM077 [116]

Answer:

The measure of angle 3 is 42

8 0
3 years ago
Solve the following quadratic equation for all values of x in simplest form.<br> (x – 4)^2 – 47 = 32
Debora [2.8K]

Answer:

x=4-√79, x=4+√79

Step-by-step explanation:

8 0
3 years ago
How many of the 1000 smallest positive integers are congruent to 1 modulo 9?
Serjik [45]
1 modulo 9 is the set of numbers as follows:

(0(9) + 1), (1(9) + 1, ....)
which is:
1, 10, 19

All we have to do is divide 1000 by 9, and round down.

1000/9 = 111.111......
There are 111 numbers.
Now let us check our work.

the set is as follows:

(1,10,19, ....... (111)9 +1)
(1, 10, 19 ........ 1000)
We are within 1000.
Therefore, 111 of the 1000 smallest positive integers are congruent to 1 modulo 9.
5 0
4 years ago
In ΔWXY, the measure of ∠Y=90°, YX = 40, XW = 41, and WY = 9. What ratio represents the cosine of ∠W?
andreyandreev [35.5K]

Answer:

\cos(W) = \frac{9}{41}

Step-by-step explanation:

Given

\angle Y = 90^o

YX = 40; XW = 41; WY = 9

Required

Determine \cos(W)

The question is illustrated with the attached image.

So:

\cos(W) = \frac{Adajacent}{Hypotenuse}

\cos(W) = \frac{WY}{XW}

This gives:

\cos(W) = \frac{9}{41}

3 0
3 years ago
PLEASE HELP! What is the value of x?
Amanda [17]
It is a rectangle so its opposite sides are congruent. Because they are congruent we can set them equal to each other and solve for x.

40 = 5x + 10
30 = 5x 
6 = x

So the value of x is 6.
5 0
3 years ago
Read 2 more answers
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