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3 years ago

. Check your solutions. b. 7+2x = 4x-3

Mathematics

1 answer:

denis23 [38]3 years ago

5 0

es correcto porque 7+2 x 2= 18 , y 4x3 es 18

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lawyer [7]

(7x^2-3x+10)-(-4x^2+6x-4)

Combine Like Terms

11x^2-9x+14 is your answer

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3 years ago

Label place value for 987164.302

Oksi-84 [34.3K]

987164 is in the ones place
3 is in the tens
0 is in the hundreds
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7 0

4 years ago

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A cone has a radius of 5 ft and a height of 15 ft. It is empty and is being filled with water at a constant rate of 15 15 ft 3 f

kvasek [131]

Answer:

$\frac{dr}{dt}=0.11062ft/sec$

Step-by-step explanation:

From the question we are told that:

Radius $r=5ft$

Height $H=15ft$

Rate $R=15ft/3sec =5ft/s$

Surface Radius $R_{surf}=2.2ft$

Generally the equation for Volume is mathematically given by

$V=\frac{1}{3}\pi*r^2h$

Since radius to height ratio gives

$\frac{r}{h}=\frac{5}{15}$

$\frac{r}{h}=\frac{1}{3}$

$h=3r$

Therefore

$V=\frac{1}{3}\pi*r^2(3r)$

$V=\pi r^3$

Generally the equation for Change of Volume is mathematically given by

$\frac{dv}{dt}=\pi \frac{d}{dt}(r^3)$

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$\frac{dr}{dt}=\frac{5}{45.62}$

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3 0

3 years ago

Help plz...................................

N76 [4]

Answer:

Step-by-step explanation:

These are similar triangles, so the ratio of their sides is the same for each side.

AB = 8 and BD = 10

So, the ratio is 8:10 or 4:5

Because the triangles are similar....

The ratio of AC:CE is also 4:5

12:15 = 4:5

So, 12 is the answer!

8 0

3 years ago

Given below are the coordinates of the vertices of a triangle. Find the lengths of the sides of the triangle, then click to iden

vodomira [7]

In order to find the lenght of the triangles you may use the next formula
<span>A(x1 , y1) , B(x2 , y2) </span>
<span>AB = sqrt[(x1-x2)^2+(y1-y2)^2]
</span>Still I have to say that the triangle you are describing is definitely Isosceles
I hope this works for you

8 0

3 years ago

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