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2 years ago

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Mathematics

1 answer:

Sergeu [11.5K]2 years ago

6 0

Answer:

48, 39, 13

Step-by-step explanation:

48+39+13=100

i used trial and error

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Solve the system of equations using the substitution method.

Katena32 [7]

4x+5y=7
y=3x+9

1) 4x+5(3x+9)=7 2) y=3(-2)+9
y= -6 +9
4x+15x+45=7 y=3
19x+45=7
19x= -38
x= -2
x is -2 and y is 3

3 0

3 years ago

A triangle with lengths 12 in, 14 in, and 16 in, what type of triangle is that?

iragen [17]

Answer:

scalene triangle

Picture:

(in attachment)

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2 years ago

Daniel can paint a house in 10 days, while his father can paint the same house in 6 days. If they work together, how long will t

Alex73 [517]

Answer:

3 $\frac{3}{4}$ days

Step-by-step explanation:

Let the amount of work be x.

Daniel:

10 days = x

1 day = $\frac{1}{10}$ x

Father:

6 days = x

1 day = $\frac{1}{6}$ x

Together:

1 day = $\frac{1}{10}$ x + $\frac{1}{6}$ x

= $\frac{6}{60}$ x + $\frac{10}{60}$ x

= $\frac{16}{60}$ x

= $\frac{4}{15}$ x

No. of days = $\frac{15}{15}$ x ÷ $\frac{4}{15}$ x

= $\frac{15}{15}$ x × $\frac{15}{4}$ x

= $\frac{225}{60}$

= 3 $\frac{3}{4}$

4 0

2 years ago

A bowling alley provides bowling balls with weights of 11, 12, 13, 14 pounds. This information is shown in the table along with

Anarel [89]

Answer:1/6 100% Correct

5 0

3 years ago

The mean absolute deviation,like where do I take it from?

timofeeve [1]

So Mean Absolute Deviation or MAD for short is the Mean of how far each digit is from the Mean. So first find the mean, then for each number so let's say the mean is 3 and the numbers are 2, 4, 3. So 3-2=1, 4-3=1, 3-3=0. So you have 1, 1, 0. Find the mean of that 1+1+0=2/3 so the MAD is 2/3.

So just follow my steps
1. Find the mean
2. Find the difference from the mean of each number
3. Find the mean of step 2
4. Step 3 is your answer

5 0

3 years ago