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Serjik [45]
3 years ago
11

Someone please help me with this.

Mathematics
1 answer:
liubo4ka [24]3 years ago
5 0
  • Radius=r=0.7m
  • Volume=231m^3
  • Height=h

\boxed{\sf Volume=\pi r^2h}

\\ \sf\longmapsto π(0.7)^2h=231

\\ \sf\longmapsto 0.49πh=231

\\ \sf\longmapsto πh=\dfrac{231}{0.49}

\\ \sf\longmapsto 3.14h=471.4

\\ \sf\longmapsto h=\dfrac{471.4}{3.14}

\\ \sf\longmapsto h=150m

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PLZ HELP
zubka84 [21]

Answer::::::::::

3 years

8 0
3 years ago
Work out m and c for the line:<br> 2x + 3y +1=0 <br><br>m=<br>c =​
Sergio [31]

Answer:

m = - \frac{2}{3} , c = - \frac{1}{3}

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Given

2x + 3y + 1 = 0 ( subtract 2x + 1 from both sides )

3y = - 2x - 1 ( divide terms by 3 )

y = - \frac{2}{3} x - \frac{1}{3} ← in slope- intercept form

with m = - \frac{2}{3} and c = - \frac{1}{3}

4 0
3 years ago
Consider the two expressions 4b(b+1) and (2b+7)(2b-8). Compare their values if b=-3, b=-2, and if b=10. Is it true that for an v
noname [10]

Answer:

If b=-3 then the first expression is equal to 24 and the second expression is equal to -14.

If b=-2 then the first expression is equal to 8 and the second expression is equal to -36.

If b=10 then the first expression is equal to 440 and the second expression is equal to 324.

Yes, it is true.

Step-by-step explanation:

b=-3:

4b(b+1)=4(-3)(-3+1)=-12(-2)=24

(2b+7)(2b-8)=(2(-3)+7)(2(-3)-8)=(-6+7)(-6-8)=1(-14)=-14

b=-2:

4b(b+1)=4(-2)(-2+1)=-8(-1)=8

(2b+7)(2b-8)=(2(-2)+7)(2(-2)-8)=(-4+7)(-4-8)=3(-12)=-36

b=10:

4b(b+1)=4(10)(10+1)=40(11)=440

(2b+7)(2b-8)=(2(10)+7)(2(10)-8)=(20+7)(20-8)=27(12)=324

8 0
3 years ago
5/8 of the staff are male. 5/12 of the staff works part time at the aquarium. What is the fraction of the staff being a female?
mestny [16]

Answer:3/8

Step-by-step explanation:

5/8 of the staff are male.  The entire staff is represented by the fraction 8/8.  Taking 5/8 from this, what we have left is

8/8-5/8 = 3/8 of the staff are female.

5 0
3 years ago
There are 12 boys in a math class. The total number of students s depends on the number of girls in the class g. write an equati
Pani-rosa [81]
12 + g = s
12 boys + g girls = s students
5 0
3 years ago
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