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3 years ago

Ratio for 30 boys to 50 girls

Mathematics

2 answers:

alisha [4.7K]3 years ago

8 0

Answer:

3 : 5

Step-by-step explanation:

30boys : 50girls
= 30 : 50
= 30/50 = simplify = 3/5
= 3/5 change into ratio is 3 : 5
3 : 5

S_A_V [24]3 years ago

4 0

Answer:

30:50 OR Can reduce it to 3:5

Step-by-step explanation:

30: 50 OR 3.5

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3 years ago

Julia is going to the store to buy candies. Small candies cost $4 and extra-large candies cost $12.She needs to purchase at leas

BartSMP [9]

Answer:

Small candies $=9$

Extra large candies $=12$

Step-by-step explanation:

Let small candies $=x$

Extra large candies $=y$

the number of candies is at least $20$ .

$x+y\geq20$

Cost of $1$ small candy $=\$4$

Cost of $1$ extra large candy $=\$12$

but she has only $\$180$ to spend

$4x+12y\leq180$

Solve for

$x+y=20.......(1)\\4x+12y=180.....(2)\\eqn(2)-eqn(1)\times4\\8y=100\\y=\frac{100}{8} \\y=\frac{25}{8} \\from\ eqn(1)\\x+\frac{25}{2}=20\\ x=20-\frac{25}{2} \\x=\frac{15}{2}$

Since number of candies should be integer.

let $x=7,y=13$

total spend $4\times7+12\times13=184$ which is more than $\$180$ , so this combination is not possible.

$let\ x=8,y=12\\8\times4+12\times12=176$

She has $\$4$ more so she can buy $1$ more small candy.

Hence small candy $=9$

extra large candy $=12$

4 0

3 years ago

HELP ASAP 2 MINUTES find the volume of a cylinder with a radius or 3.14

Scrat [10]

Answer:

V≈213.73

Step-by-step explanation:

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4 years ago

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belka [17]

Answer:

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Step-by-step explanation:

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3 years ago

Which equation has a solution of x = 9?

GaryK [48]

Answer: 2x-3=15

2(9)-3=15
18-3=15

7 0

3 years ago