All categories

3 years ago

What was the original number if after 40% it became 420

Mathematics

2 answers:

Liula [17]3 years ago

8 0

Answer:

588 should be the answer :)

Jobisdone [24]3 years ago

5 0

Answer:

300

Step-by-step explanation:

Solve for x.

x+(2/5*x)=420

x=300

You might be interested in

Do you know how do this because I need help?

Vinil7 [7]

Answer:

Its C

Step-by-step explanation:

7 0

3 years ago

Jacob distributed a survey to his fellow students asking them how many hours they'd spent playing sports in the past day. He als

Salsk061 [2.6K]

Answer: y=1.5x+5 estimate:8.75

7 0

3 years ago

The square of 9 less than a number is 3 less than the number. what is the number?

Veronika [31]

Would the answer be 6

4 0

3 years ago

Translate this phrase into an algebraic expression.

PSYCHO15rus [73]

Answer:

2m+8

Step-by-step explanation:

5 0

3 years ago

Carissa also has a sink that is shaped like a half sphere. The sink has a volume of 4000/ 3 * π in 3. One day, her sink clogged.

givi [52]

Answer:

Part a) 119 cups

Part b) 30 cups

Step-by-step explanation:

Part a)

step 1

Find the volume of the conical cup with a diameter of 4 in. and a height of 8 in

The volume of the cone (cup) is equal to

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

we have

$r=4/2=2\ in$ ----> the radius is half the diameter

$h=8\ in$

assume

$\pi =3.14$

substitute

$V=\frac{1}{3}(3.14)(2^{2})8=33.49\ in^3$

step 2

Find out how many cups of water must Carissa scoop out of the sink

Divide the volume of the sink by the volume of the cup

$\frac{4,000}{33.49}= 119\ cups$

Part b)

step 1

Find the volume of the conical cup with a diameter of 8 in. and a height of 8 in

The volume of the cone (cup) is equal to

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

we have

$r=8/2=4\ in$ ----> the radius is half the diameter

$h=8\ in$

assume

$\pi =3.14$

substitute

$V=\frac{1}{3}(3.14)(4^{2})8=133.97\ in^3$

step 2

Find out how many cups of water must Carissa scoop out of the sink

Divide the volume of the sink by the volume of the cup

$\frac{4,000}{133.97}= 30\ cups$

7 0

3 years ago