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3 years ago

7

Solve the simultaneous equations: 4x - y = 22 3x + 4y = 26

1 answer:

Nonamiya [84]3 years ago

6 0

4x - y= 22 /x 4
<u>3x+4y=26
</u>
16x - 4y = 88 }+
3x + 4y = 26

16x + 3x - 4y + 4y = 88 + 26
19x = 114 / :19
<u>x = 6

</u>3x + 4y = 26
4y = 26 - 3*6
4y = 8 /: 4<u>
y = 2</u>

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Georgia’s scores in six subjects are 89, 75, 92, 68, 78, 75, and 80. If she finds a single value that summarizes all the values

posledela

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3 years ago

What is the solution to the equation?

Oxana [17]

ANSWER

(C) d=1

EXPLANATION

The given equation is

$\frac{ - 3d}{ {d}^{2} - 2d - 8} + \frac{3}{d - 4} = \frac{ - 2}{d + 2}$

Factor the first fraction to get,

$\frac{ - 3d}{(d + 2)(d - 4)} + \frac{3}{d - 4} = \frac{ - 2}{d + 2}$

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7 0

3 years ago

Read 2 more answers

Explain how you can use 4S facts to solve 8×3?

Otrada [13]

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3 years ago

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I need help solving systems of linear equations by substitution. <br> {4x+3y=14<br> 3x-2y=2

Sauron [17]

Answer:

A) 4x+3y=14

B) 3x-2y=2

We multiply equation A) by (2/3)

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B) 3x-2y=2

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Step-by-step explanation:

4 0

3 years ago

natita [175]

Lyra's speed of travel is 6.71 feet per seconds and Lyra's direction of travel is 27 degrees north of east

<h3>How to determine the speed of travel?</h3>

The diagram that represents the scenario is added as an attachment.

Let x represents Lyra's speed of travel.

The value of x is calculated using the following Pythagoras theorem.

$x = \sqrt{3^2 + 6^2}$

Evaluate the exponents

$x = \sqrt{9 + 36}$

Evaluate the sum

$x = \sqrt{45}$

Evaluate the exponent

x = 6.71

Hence, Lyra's speed of travel is 6.71 feet per seconds

<h3>How to determine the direction of travel?</h3>

The direction (∅) is calculated using the following tangent ratio.

$\tan(\theta) = \frac 36$

Evaluate the quotient

$\tan(\theta) = 0.5$

Take the arc tan of both sides

$\theta = \tan^{_1}(0.5)$

Evaluate

$\theta = 27$

Hence, Lyra's direction of travel is 27 degrees north of east

Read more about speed and distance at:

brainly.com/question/4931057

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1 year ago