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makkiz [27]
3 years ago
15

Help pls, I’m confused

Mathematics
1 answer:
Alecsey [184]3 years ago
4 0

Answer:

(x + y)² = 25

Step-by-step explanation:

The expansion of (x + y)² is

(x + y)² = x² + y² + 2xy ← substitute x² + y² = 15 and xy = 5

           = 15 + 2(5)

           = 15 + 10

           = 25

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Help asap will mark BRAINLIEST
dsp73

x = 81 degrees (The sum of a triangle's angles must be 180 degrees. 48 + 51 = 99, and 180 - 99 = 81)

y = 99 degrees (Y and X are on a supplementary angle. Like a triangle, a supplementary angle's angles must add up to 180 degrees. 180 - 81 = 99)

z = 129 degrees (Z and the 51 degree angle are also on a vertical angle. 180 - 51 = 129)

Hope this helps!

4 0
3 years ago
What affects the size of an angle? A. The length of its sides B. The direction of one side C. Its orientation in space D. The am
MrMuchimi

Answer:

<h3>D. The amount of rotation of one side.</h3>

Step-by-step explanation:

We need to explain the statement " What affects the size of an angle? ".

Given options are

A. The length of its sides

B. The direction of one side

C. Its orientation in space

D. The amount of rotation of one side.

The correct option would be :

<h3>D. The amount of rotation of one side.</h3>

<em>Because as the one side rotated, it makes a greater or smaller arc between the two lines. That would affects the size of an angle. </em>

4 0
3 years ago
Read 2 more answers
What is the value of this expression 6 7/8+ 4 1/5+ 8 1/2
S_A_V [24]

Answer:

Fraction:783/40 Decimal:19.575

Mixed:19 23/40

Step-by-step explanation:


4 0
3 years ago
Enter your answer, in simplest radical form.
Alexus [3.1K]

Answer: 30x\sqrt{2y}

Step-by-step explanation:

\sqrt{6x} x \sqrt{15xy} x \sqrt{20}

This can also be written as :

\sqrt{6x.15xy.20}

= \sqrt{1800x^{2}y}

which could be written as :

\sqrt{900x^{2}} x \sqrt{2y}

= 30x\sqrt{2y}

4 0
3 years ago
Hey can you please help me posted picture of question
svet-max [94.6K]
If we observe the graph we can see that the curve crosses the x-axis at the following points: 1, 3, and 5
This means x = 1, x = 3 and x = 5 are the roots of the polynomial and x - 1, x - 3 and x - 5 are the factors of the polynomial.

We can express the polynomial as the product of its factors. So the polynomial will be (x-1)(x-3)(x-5)

The correct answer to this question is option A

4 0
3 years ago
Read 2 more answers
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