3 years ago

Asking this for a third time now

Mathematics

1 answer:

Vanyuwa [196]3 years ago

8 0

The perimeter is 18.85 feet

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The ratio of girls to boys in Mr. Smith's homeroom is 3:4. The ratio in Mr. Smith's homeroom to students in the whole 7th grade

Leno4ka [110]

3:4 = G:B

1:5 = Mr. Smith's class: 7th Grade

2:7= 7th: Middle school

12 girls = 3 units

1 unit = 12/3= 4

Boys = 4x4= 16

Whole class = 28 students

Class : Grade = 1:5 7 = number of units in Mr. Smith's class

28 = 1 unit

5 units= 28x5= 140 There are 140 kids in the grade

140 = 2 units

1 unit = 140/2= 70

70x7=490

There are 490 students in the whole grade

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2 years ago

Find the greatest number that will divide 63, 45 and 69 so as to leave the same remainder.

jeka57 [31]

Answer:

Step-by-step explanation:

Let n be unknown divisor and a be the same remainder, then

$63=q_1\cdot n+a\\ \\45=q_2\cdot n+a\\ \\69=q_3\cdot n+a$

Subtract a from all equalities:

$63-a=q_1\cdot n\\ \\45-a=q_2\cdot n\\ \\69-a=q_3\cdot n$

Subtract them:

$63-45=(q_1-q_2)n\Rightarrow 18=(q_1-q_2)n\\ \\69-63=(q_3-q_1)n\Rightarrow 6=(q_3-q_1)n\\ \\69-45=(q_3-q_2)n\Rightarrow 24=(q_3-q_2)n$

The greatest number is 6. When you divide numbers 63, 45, 69 by 6, you'll get remainders 3, 3, 3, respectively.

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2 years ago

Solve for m. 4m^n = 49

Sever21 [200]

Answer:

m=49/4

Step-by-step explanation:

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2 years ago

Write the ratio that compares 1 1/2 cups of flour to 2 eggs.

Sholpan [36]

Answer:

Step-by-step explanation:

A ratio is comparison between two values in math

1.5 cups of flour : 2 eggs

1.5 cups of flour to 2 eggs

$\frac{1.5 cups of flour}{2 eggs }$

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2 years ago

What is the answer Need quick Help

FrozenT [24]

Your answer would be A b=a+5

5 0

3 years ago

Read 2 more answers