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3 years ago

Find the lower bound for the following lengths:

Mathematics

1 answer:

ikadub [295]3 years ago

7 0

Answer:

a) Lower bound = 39.5

b) Lower bound = 82.75

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The ratio of boys to girls at a movie is 4:7. If there are 21 girls, how many boys are ar the movie?

Korolek [52]

Answer:

ratio of boys to girls= 4:7

number of girls=21

now,

$\frac{boys}{girls} \times \frac{no.of \: boys}{no.of \: girs}$

$\frac{4}{7} \times \frac{boys}{21}$

$4 \times 21 = 7boys\: \\ \: ({cross multiplication})$

$84 = 7boys$

$\frac{84}{7 \: } = boys \: \: \: (dividing \: 84 \: by \: 7)$

$12 = boys$

$no.of \: boys = 12$

3 0

3 years ago

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tensa zangetsu [6.8K]

Answer:

A,C, and F (i think <3)

Step-by-step explanation:

3 0

3 years ago

You discover that you are over serving a dish because customers keep taking a third of it home. If the dish requires 4 ingredien

devlian [24]

Answer:

4 parts

Step-by-step explanation:

If the total number of parts is 12 and you want to reduce the dish to two-thirds its current size, the number of parts that will be reduced is (1 - 2/3) = 1/3

To reduce 1/3 of the 12 parts, you need to multiply 12 by 1/3 to know how many parts is that:

12 * 1/3 = 12/3 = 4

You need to subtract 4 parts. If you have 4 ingredients, you can remove 1 part of each, so each ingredient now will have 2 parts.

5 0

4 years ago

What is the solution of y/-2 < 3

vova2212 [387]

Answer:

(y/-2)(-2)<3(-2)

y > -6

6 0

3 years ago

If the sphere shown above has a radius of 11 units then what is the approximate volume of the sphere

adell [148]

Answer:

Volume of the sphere $=5563.58units^3$

Step-by-step explanation:

Volume of the sphere= $\frac{4}{3} *\pi *r^3$

The sphere has given radius(r)= 11 units

Putting the value of the radius in the formula;

Volume of the sphere:

= $\frac{4}{3} *3.14*11*11*11$

$=1.33*3.14*11*11*11$

$=4.18*11*11*11$

$=4.18*1331$

Volume $=5563.58units^3$

The volume of the sphere with radius of 11 units is $5563.58units^3$

8 0

3 years ago