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3 years ago

If 6x+4y=2 and 2x-7y=20 what is 8x-3y ???? ???

Mathematics

1 answer:

Marizza181 [45]3 years ago

4 0

Just add the two equations.

8x-3y=22

I hope this helps :)

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Please help me with this problem i have been struggling!

adoni [48]

Answer:

First multiply

1 and 3/4 by 8 and then you got your answer

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2 years ago

Read 2 more answers

2a-2,2a+2,6a-2 ans. 1) -3 2) -2 3) 2 4) 3

Gala2k [10]

Answer:

the answer is 3 because 2a-2a+6a-2+2+2

2a-2a=0

6a-2+2+2=

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8 0

2 years ago

Out of 431 applicants for a job, 142 have over 5 years of experience and 103 have over 5 years of experience and have a graduate

Savatey [412]

Answer:

0.2390

Step-by-step explanation:

Given

Total applicants = 431
Applicants with graduate degree and over 5 years of experience = 103

Probability = favorable outcomes/total outcomes

Required probability

103/431 = 0.2390 rounded to 4 decimal places

3 0

3 years ago

Can you please help? The question is in the picture picture. thank you

Naddika [18.5K]

Given:

The value is $\dfrac{\sqrt{2}}{2}$ .

To find:

The values from the given options which are equal to the given value.

Solution:

We have,

$\dfrac{\sqrt{2}}{2}$

It can be written as:

$\dfrac{\sqrt{2}}{2}=\dfrac{1}{\sqrt{2}}$

From the standard trigonometric table, we get

$\sin 30^\circ=\dfrac{1}{2}$

$\sin 45^\circ=\dfrac{1}{\sqrt{2}}$

$\cos 45^\circ=\dfrac{1}{\sqrt{2}}$

$\cos 60^\circ=\dfrac{1}{2}$

$\tan 30^\circ=\dfrac{1}{\sqrt{3}}$

$\tan 45^\circ=1$

From the above values it is clear that the value of $\sin 45^\circ$ and $\cos 45^\circ$ are equal to $\dfrac{1}{\sqrt{2}}$ .

Therefore, $\sin 45^\circ$ and $\cos 45^\circ$ and equal to $\dfrac{\sqrt{2}}{2}$ . So, options B and C are correct.

4 0

2 years ago

John is planning a 250 mile long road trip. His car gets 32 miles per gallon on the highway. Gas costs $3.50 a gallon. How much

lapo4ka [179]

Answer:

$27.34

Step-by-step explanation:

250 miles divided by 32 miles per gallon equals 7.8125 which is the number of gallons needed. Then multiple 7.8125 by the cost per gallon $3.50 to determine the cost of the fuel needed.

7 0

2 years ago