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2 years ago

How many solutions does the system of equations have?

Mathematics

2 answers:

sertanlavr [38]2 years ago

7 0

Y = 4 x + 3
<span>y = 4 x + 3/2
</span>no solution :) hope this helps

Rainbow [258]2 years ago

7 0

<span>
2y-8x=3
2y = 8x -3
y = 4x - 3/2

</span><span>y = 4x + 3
</span>y = 4x - 3/2
---------------subtract
0 = 0 + 4 1/2

0 can not equal 4 1/2

There's no solution

answer is <span>D.none</span>

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Find the simple interest earned to the nearest cent for each principal, interest rate, and time.

Y_Kistochka [10]

Answer:

Interest earned at 3.9 percent rate is $31.2

Interest earned at 2 percent rate is $5.8

Step-by-step explanation:

A = P(1 + rt)

Where 'A' is the amount, 'r' is the rate and 't' is the time in years

When;

P = $1200

r = 3.9%

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Then,

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Interest earned at 3.9 percent rate is $1231.2 - $1200 = $31.2

When;

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Interest earned = Amount - Principal

Interest earned at 2 percent rate = $585.8 - $580 = $5.8

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2 years ago

What would you multipy and to which equation to start solving by using the elimination method? Then would you add or subtract th

tester [92]

Answer:

multiply the first equation by -2, then add them

Step-by-step explanation:

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2 years ago

Given that sin theta = 1/4, 0→theta→π/2, what<br>. what is the exact value of cos 8?

natali 33 [55]

<h3>Answer: Choice B $\frac{\sqrt{15}}{4}$ </h3>

===========================================================

Work Shown:

Angle theta is between 0 and pi/2, so this angle is in quadrant Q1.

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Then use the pythagorean trig identity to get

$\sin^2 \theta + \cos^2 \theta = 1\\\\\cos^2 \theta = 1-\sin^2 \theta\\\\\cos \theta = \sqrt{1-\sin^2 \theta} \ \ \ \text{cosine is positive in Q1}\\\\\cos \theta = \sqrt{1-\frac{1}{16}}\\\\\cos \theta = \sqrt{\frac{16}{16}-\frac{1}{16}}\\\\\cos \theta = \sqrt{\frac{16-1}{16}}\\\\\cos \theta = \sqrt{\frac{15}{16}}\\\\\cos \theta = \frac{\sqrt{15}}{\sqrt{16}}\\\\\cos \theta = \frac{\sqrt{15}}{4}\\\\$

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2 years ago

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ATTACHED is the written out response.

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2 years ago

In a fruit cocktail, for every 20 ml of orange juice you need 10 ml of apple juice and 15 ml of coconut milk. What proportion of

Romashka [77]

Answer:

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Step-by-step explanation:

First, find the total number of mL in the drink:

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= 45

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Simplify this by dividing the numerator and denominator by 5:

10/45

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So, 5/9 is the proportion of the cocktail that is apple juice

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2 years ago