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Gwar [14]
3 years ago
6

In a seventh grade class, the ratio of boys to girls is 3/9. there are 28 students in the class. Which equation show how to find

the number of boys
Mathematics
1 answer:
Shkiper50 [21]3 years ago
5 0

Answer:

Hey there! ok , so your equation would be 28 / 3

Step-by-step explanation:

The equation would be 28/3 because there are 28 students in the class and the ratio of boys to girls is 3-9 meaning that it is 1/3, which is the same as dividing by 3, so the equation would be 28/3

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13. t plus the product of three and t​
Sindrei [870]

Answer:

4t

Step-by-step explanation:

Let's form an equation here just to put it visually.

So it would be t+3*t

We can also write this as t+3t (If they're right next to eachother, it still indicates multiplication)

Now we can do t+3t which is 4t

If this doesn't make sense, then you can look at it this way

You do 1t+3t and since they're like terms, you can combine them and do 4t.

3 0
3 years ago
Solve the system of equations given below.
eduard

Answer:

The system of this equation is ( -1, 10) which is Option A.

Step-by-step explanation:

Solve for y in the first equation.

y =  - 5x + 5 \\  - 2y =  - x - 21

Replace all occurrences of yy with -5x+5 in each equation.

10x - 10 =  - x - 21 \\ y =  - 5x + 5

Solve for x in the first equation.

x =  - 1 \\ y =  - 5x + 5

Replace all occurrences of x with -1 in each equation.

y = 10 \\ x  =  - 1

The solution to the system is the complete set of ordered pairs that are valid solutions.

(−1, 10)

<u>Hence</u><u>,</u><u> </u><u>the</u><u> </u><u>system</u><u> </u><u>of</u><u> </u><u>this</u><u> </u><u>equation</u><u> </u><u>is</u><u> </u><u>(</u><u>-1</u><u>,</u><u> </u><u>10</u><u>)</u><u>.</u><u> </u>

<u>Option</u><u> </u><u>A</u><u>.</u>

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3 years ago
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Read 2 more answers
The ratio of the number of boys to girls the number of girls in the school 729 and there are 1248 students in the school how man
DerKrebs [107]

Answer:

<em> 1005 girls</em>

Step-by-step explanation:

From the question we are given ratio of boys to girls as 7 : 29

Total ratio will be 7 + 29 = 36

Total students in the school = 1248 students

Number of girls in the school = 29/36 * 1248

Number of girls in the school = 29 * 35

Number of girls in the school  = 1005

<em>Hence the approximate total number of girls in the school is 1005 girls</em>

<em></em>

<em>Note that the ratio was assumed since we are not given in question</em>

6 0
4 years ago
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