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Dmitriy789 [7]
3 years ago
11

When using substitution to solve this system of equations, what is the result of the first step?

Mathematics
1 answer:
Alex_Xolod [135]3 years ago
7 0
The first choice is your answer. Since it’s substitution, you have to plug in x to the x in the bottom equation
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Solve the following quadratic equation by factorisation method 3 x square - 2 root 6 × + 2 =0​
frozen [14]
3x^2 -2root(6)x + 2 = 0

(root(3)x)^2 -2[root(3)x]root(2)+ (root(2))^2 = 0

let a = root(3)x and b = root(2)

a^2 -2ab + b^2 = 0

(a - b)^2 = 0

by the null factor rule,

a - b = 0

sub back in a and b

root(3)x = root(2)

x = root(3)/root(3)
6 0
3 years ago
An angle measures 32degrees what is the measure of its complement
Alex787 [66]

The measure of 32° complement is 58°.

<h3>What is an angle?</h3>

An angle is a geometry in plane geometry that is created by 2 rays or lines that have an identical terminus.

The identical endpoint of the two rays—known as the vertex—is referenced as an angle's sides.

The angle is the measurement of the angular distance for example for linear motion we have a meter inch but for angular rotation, we don't have the measurement so the angle is useful to measure the angular rotation.

Given,

The measure of an angle = 32°

Complimentary angles are those angles whose sum is 90°

So,

Compliment + 32° = 90°

Compliment = 90 - 32 = 58°.

Hence "The measure of 32° complement is 58°".

For more about the angle,

brainly.com/question/13954458

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6 0
2 years ago
At a concert, 20% of the people are wearing black dresses or suits, 1/4 are wearing navy, 0.35 are wearing brown, and the rest a
Elan Coil [88]

Answer: 20%

Step-by-step explanation:

20% black dresses or suits

.35 = 35% wearing brown

1/4 = 25% wearing navy

100% -20% - 35% - 25% = 20% left

5 0
3 years ago
Write the equation of the line that passes through the given point and is perpendicular to the given line (-6,-3);y=-2/5x
Paladinen [302]

Answer:

5x-3y+36=0

Step-by-step explanation:

ME TrYINg

6 0
3 years ago
A plane ticket to Hawaii costs $986.
maria [59]

Using the given discrete distribution, it is found that the expected value is of $863.93.

<h3>What is the mean of a discrete distribution?</h3>

The expected value of a discrete distribution is given by the <u>sum of each outcome multiplied by it's respective probability</u>.

In this problem, the distribution of costs is given by:

  • P(X = 986) = 0.87.
  • P(X = 47) = 0.13.

Hence, the expected value is given by:

E(X) = 0.87 x 986 + 0.13 x 47 = $863.93.

More can be learned about discrete distributions at brainly.com/question/24855677

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7 0
2 years ago
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