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VashaNatasha [74]
3 years ago
8

Please help i think this is like a quick maths kinda thing soo

Mathematics
2 answers:
Likurg_2 [28]3 years ago
7 0
The cylinder on the left, you can see that 4 ft is only halfway through the width, so :
4(2) * 7 *3.14 =
8*7 *3.14= 56
56*3.14 = 175.84
Answer for left cylinder: the volume of the left cylinder is 175.84.
Right cylinder:
7(2)*4*3.14=
14* 4 * 3.14 =
56 * 3.14 = 175.84
Answer for right cylinder: the volume of the right cylinder is 175.84, therefore, both of the cylinders volume is the same.
tigry1 [53]3 years ago
5 0

answer:

the volumes of the cylindars are equal beacuse the right cylinder is simply squished down and made fat so the width and hight are flipped

hope this helped

-the chair with internet

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Write an equivalent expression for each of the following. Express your answers in the form a + bi or a - bi
Lana71 [14]

Answer:

44 +14i

Step-by-step explanation:

(5 + i)(9 + i)

FOIL

first 5*9 = 45

inner: 9i

outer :5i

last: i*i = i^2 = -1

Add togheter

45 + 9i+5i -1

Combine like terms

44 +14i

6 0
3 years ago
Combine like terms - 7 -3(4-2x)-10x
Shtirlitz [24]

Answer:

The simplified form would ve -19 - 4x

Step-by-step explanation:

Before we combine anything, we first must expand the expression by distributing the -3 to the terms in the parenthesis.

-7 - 3(4 - 2x) - 10x

-7 - 12 + 6x - 10x

Now we can combine the terms with and without variables.

-19 - 4x

8 0
3 years ago
Read 2 more answers
1) A cyclist travels a distance of 90 miles in 5 hours. What
Nostrana [21]

Answer:

Step-by-step explanation: <u>Speed</u> is distance an object travelled per unit time.

It is represented by letter v and can assume various units.

1) v=\frac{distance}{time}=\frac{d}{t}

v=\frac{90}{5}

v = 18 miles per hour

Her average speed is 18 mph.

2) Rearraging formula for distance:

d = v.t

d = 70 * 4

d = 280 miles

You would travel 280 miles.

3)  v=\frac{d}{t}

v=\frac{315}{6}

v = 52.5 mph

My average speed is 52.5 mph.

4) Rearranging formula to determine time:

t=\frac{d}{v}

t=\frac{210}{90}

t = 2.34 hours

It will take 2 hours and half to arrive in Leeds. So, we will be expected to arrive at 12:04.

5) The unit change but the way of calculating time is the same.

t=\frac{2000}{4}

t = 500 s

or t = 8.34 minutes

It will take, for an athlete to run 2000m, 8.34 minutes.

6) a) All units must match, so for a speed in mph:

45 minutes is 0.75 hours. Total time is 8.75 hours.

v=\frac{420}{8.75}

v = 560 mph

The average speed is 560 mph.

b) t=\frac{d}{v}

t=\frac{420}{63}

t = 6.67 hours

Sam will take 6.67 hours to covered the distance.

4 0
3 years ago
A right cone has an altitude of 4 units and a base diameter of 6 units. What is it’s lateral area?
fenix001 [56]

Answer:

Lateral area  =

pi *  (radius) * √ [ height ^2  + radius^2 ]  =

pi *  ( 4 )  * √ [  4^2 + 3^2 ]  =

pi * ( 4 ) * √25  =

pi * ( 4 ) * (5 )  =

20 pi  units^2  ≈   62.8 units^2

Step-by-step explanation:

4 0
3 years ago
A total of 60 children signed up for hockey. There were 33 boys for every 11 girl who signed up. How many of the children who si
Ber [7]
Boys : Girls : Total
33 : 11 : 44

Find the simplest form:
3 : 1 : 4

Set the total to 60 ( so we multiply by 15)
3 x 15 : 1 x 15 : 4 x 15
45 : 15 : 60

Boys  = 45
Girls = 15
Total = 60

Ans: There are 15 girls that signed up
5 0
3 years ago
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