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3 years ago

3x add 5y takeaway x add 2y answer

Mathematics

1 answer:

Vinil7 [7]3 years ago

3 0

Answer:

2x +7y

Step-by-step explanation:

3x + 5y - x + 2y

2x + 5y + 2y

2x + 7y

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Can some one solve this please.

Mamont248 [21]

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36x=176
x=44/9 which is approximately 4.8
mmTherefore mmmIn conclusion m

5 0

3 years ago

10. The perimeter of Lola's rectangular

pentagon [3]

I think 51 is the answer

5 0

3 years ago

Find the arc length of the semicircle. 7the grade

charle [14.2K]

so, is a semi-circle, half a circle, recall a circle has a total of 360°, so half of that will be 180°.

the diameter of that circle is 10, so its radius is half that, or 5.

$\bf \textit{arc's length}\\\\ s=\cfrac{\theta \pi r}{180}~~ \begin{cases} r=radius\\ \theta =angle~in\\ \qquad degrees\\[-0.5em] \hrulefill\\ \theta =180\\ r=5 \end{cases}\implies s=\cfrac{(180)(\pi )(5)}{180}\implies s=5\pi \stackrel{\pi =3.14}{\implies s=15.7}$

3 0

3 years ago

Poiseuille's Law states that the volume, V, of blood flowing through an artery in a unit of time at a fixed pressure is directly

eimsori [14]

Answer:

11.58%

Step-by-step explanation:

The initial volume if blood flowing through the artery is given by

$V=kr^4$

To achieve a new volume of 155% (55% increase) of the initial volume, the new radius must be:

$V'= 1.55V\\1.55V=k(r')^4\\1.55kr^4 = k(r')^4\\(\sqrt[4]{1.55}*r)^4=(r')^4 \\(1.1158*r)^4=(r')^4 \\r'=1.1158*r$

Since the new radius is 1.1158 times larger than the initial radius, the percentage increased is:

$I=(1.1158 - 1)*100\%\\I= 11.58\%$

7 0

4 years ago

What is the I-value of the solution of the system of equatIons <br> x + 3y = 13 and 3x - y = –11?

Marrrta [24]

Answer:x=1,y=

Step-by-step explanation:Here's one of many ways of solving this system. Since we are already told that

−

from the first equation, just plug in

−

everywhere you see an

in the second equation.

So the second equation becomes

(

−

)

. Solve this for

to get

Then, go back to the first equation that says

−

and plug in

. So

Check your work by plugging in the values.

−

and

(

)

, so we are right.

3 0

3 years ago