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loris [4]
3 years ago
11

Find X when y=5 in the literal equation 4x+7y=51

Mathematics
1 answer:
JulijaS [17]3 years ago
3 0
<span>4x+7y=51

Plug in  </span><span>y=5::
4x+7(5)=51

Simplify:
4x+35=51

</span>
<span>4x+35-35=51-35

4x=16  (÷4)

x=4

Done :)


</span>
<span> I hope that helps!

</span>
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Suppose that y varies directly with x. Given x=4 when y=20.<br> Find y when x = 3
scoray [572]

Answer:

y = 15

Step-by-step explanation:

Given: y varies directly with x, x=4 when y=20

To find:  y when x = 3

Solution:

As y varies directly as x, it means that as x increases, y also increases by the same factor.

As y varies directly with x,

y=kx

Here, k is a constant

As x = 4 when y = 20,

20=4k\\k=\frac{20}{4}=5\\\Rightarrow y=5x

Put x = 3

y= 5(3) = 15

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3 years ago
Nvm thanks its everyday bro with that disney channel flow
Colt1911 [192]

in all my years ive never seen something like this

8 0
3 years ago
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So are you good at maths then what is
quester [9]

maybe 28 is the answer...

4 0
3 years ago
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What values for q (0 ≤q≤2π)<br> satisfy the equation?<br><br> 22√sin q + 2 = 0
Vesna [10]
Answer:
\frac{3 \pi }{4} , \frac{7 \pi }{4}

Explanation:
2√2 sin(q) + 2 = 0
2√2 sin(q) = -2
sin(q) = \frac{-2}{2 \sqrt{2} }
sin(q) = \frac{- \sqrt{2} }{2}

Now, we know that:
sin (45) = \frac{ \sqrt{2} }{2}

From the ASTC rule, we know that the sine function is negative in the third and fourth quadrant.
This means that:
either q = 90 + 45 = 135° which is equivalent to \frac{3 \pi }{4}
or q = 270 + 45 = 315° which is equivalent to \frac{7 \pi }{4}

Hope this helps :)
6 0
3 years ago
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Gennadij [26K]

Answer:

I had that answer but i lost my paper

Step-by-step explanation:

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4 0
2 years ago
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