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aliya0001 [1]
3 years ago
11

3.8:(4c+3)=2:2 2/19Please help me! I really appreciate it!

Mathematics
2 answers:
Sati [7]3 years ago
8 0

Please note that in such questions, the ":" stands for ratio which in turn stands for divide. Thus, the given expression which is:

3.8:(4c+3)=2:2\frac{2}{19} will become:

\frac{3.8}{4c+3}= \frac{2}{2\frac{2}{19}}.....(Equation 1)

Now, we know that 3.8 can be rewritten as \frac{38}{10}. Also, we know that the mixed fraction 2\frac{2}{19} can be re-written as:

2\frac{2}{19}=2+ \frac{2}{19}= \frac{38+2}{19}= \frac{40}{19}

Using the above two expressions in (Equation 1) we get:

\frac{\frac{38}{10}}{4c+3}= \frac{2}{\frac{40}{19}}

\frac{\frac{38}{10}} {4c+3}= \frac{2\times 19}{40}= \frac{38}{40}

Cross-multiplication gives:

38(4c+3)=\frac{40\times 38}{10}

4c+3=44c=1

c=\frac{1}{4}

Or c=0.25

Thus, we may write the value of c as either the decimal 0.25 or the fraction \frac{1}{4}.

Neporo4naja [7]3 years ago
6 0

Answer:

c = 0.25

Question:

3.8:(4c+3)=2:2 2/19

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C. The area of the blue circle is equal to the sum of areas of green square and black circle.

Step-by-step explanation:

The area of a circle is the circumference of the circle measured with its diameter. In the given scenario the area of the blue circle is greater than the area of black circle. This is because of the difference in diameter of the two circles. The area of green square plus the area of black circle equals the blue circle.

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Find the slope of the line passing through the points <br> , −8−3<br> and <br> , −34<br> .
alukav5142 [94]

Slope of the line passing through two points <span><span>P=<span>(<span><span>x1</span>,<span>y1</span></span>) </span></span></span>and <span><span>Q=<span>(<span><span>x2</span>,<span>y2</span></span>)</span></span></span> is given by <span><span>m=<span><span><span>y2</span>−<span>y1/</span></span><span><span>x2</span>−<span>x1</span></span></span></span></span>.

We have that <span><span><span>x1</span>=−8</span></span>, <span><span><span>y1</span>=−3</span></span>, <span><span><span>x2</span>=−3</span></span>, <span><span><span>y2</span>=4</span></span>.

Plug given values into formula for slope: <span><span>m=<span><span><span>(4)</span>−<span>(<span>−3</span>)/</span></span><span><span>(<span>−3</span>)</span>−<span>(<span>−8</span>)</span></span></span>=<span>7/5</span></span></span>.

Now y-intercept is <span><span>b=<span>y1</span>−m⋅<span>x1</span></span></span> .

<span><span>b=−3−<span>(<span>7/5</span>)</span>⋅<span>(<span>−8</span>)</span>=<span>41/5.</span></span></span>

Finally, equation of the line can be written in the form <span><span>y=mx+b</span></span>.

<span><span>y=<span>7/5</span>x+<span>41/5</span></span></span>

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3 years ago
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Answer:

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since perpendicular,

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The equation of line passing through the point (4,2)is

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Step-by-step explanation:

i don't say that you have to mark my ans as brainliest but my friend if  it has helped you a bit also don't forget to thank me.....

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