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Harrizon [31]
3 years ago
11

the ratios in an equivalent ratio table are 3:12, 4:16, and 5:20. if the first number of the ratio is 10, what is the second num

ber? justify your reasoning.​
Mathematics
2 answers:
chubhunter [2.5K]3 years ago
5 0

Answer:

10:40

Step-by-step explanation:

Step 1: Reduce ratio to lowest value

3 : 12 = 1 : 4

<em>*Divide by </em>3

Step 2: Solve ratio

<em>Let 'x' represent the second number </em>

1 : 4 = 10 : x

<em>Multiple the left side by 10</em>

10 : 40 = 10 : x

Therefore the second number in the ratio with 10 is 40

Dimas [21]3 years ago
4 0

Answer:

10:40

Step-by-step explanation:

3x4 = 12

4 x 4 = 16

5 x 4 = 20

so 10 x 4 = 40 (10:40)

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The length of a rectangle is 6 ft longer than its width. if the perimeter of the rectangle is 52 ft , find its area.
sveticcg [70]
Let its width be w and length= w+6
2(w+6+w)=52
4w+12=52
4w=40
w=10
Area=10*(10+6)=160
7 0
3 years ago
Simplify the expression by combining like
viva [34]

Answer:

Below

Step-by-step explanation:

First we combine your first set of terms,

7b^2 + 2b^2 = 9b^2

There's a subtraction hidden in there!

9b^2 - 3b^2 = 6b^2

Next we do the same thing for the second term,

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but there's a subtraction in the expression!

10b - b = 9b

Then we finish with our third term

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Answer:

6b^2 + 9b + 11

4 0
3 years ago
A store donated cases of crayons to a daycare center. Each case holds 24 boxes of crayons; each box holds 8 crayons. How many cr
kakasveta [241]

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192

Step-by-step explanation:

Just multiply 24 by 8.

I think thats it tho.

4 0
2 years ago
Read 2 more answers
A coconut shy at the village fair offers three throws for $1, or seven throws for $2. In one hour, 187 throws are made and the a
kotykmax [81]

Total throws = 187

Let three throws = 3t

And

Seven throws = 7s

So

3t + 7s = 187 -------------- (1)

While total collected money = $57

Money for three throws = 1t

Money for seven throws = 2s

Hence

1t +2s = 57 ------------------(2)

Now solving both equations, so multiply second equation by 3 and subtract it from equation (1);

Equation (2) becomes 3t + 6s = 171

While subtracting it from equation (1) gives the final equation as below.

s = 16

Putting s = 16 in equation (2);

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t = 25

Thus 25 people bought three throws and 16 people bought seven throws.

As for 25 people having three throws = $25

And

16 people having seven throws = 2x16 = $32

So total earned money = 25 + 32 = $57

<span>Hence proved. </span>

6 0
3 years ago
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elena-s [515]

Answer:

I don't know how to insert a number line, but you have to put on it x<-3. You have to plot it, then put a open circle at -3, and draw an arrow, pointing it farther into the negitive side of the number line.

Step-by-step explanation:

3 0
3 years ago
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