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mixer [17]
3 years ago
15

Math. answer plz ty❤️.

Mathematics
2 answers:
maxonik [38]3 years ago
3 0

Answer:

Robert is 10  and his dad is 40 years old

Step-by-step explanation:

We have (4x+5)=3(x+5)

4x+5=3x+15

x=10.

Roberts is 10 years old and his father is 40 years old.

sukhopar [10]3 years ago
3 0

Answer:

Step-by-step explanation:

Roberts's father=4x

Robert=x

After 5 years, the ages will be

4x+5 and x+5 because we just simply add 5 years to their ages

It says that the father will be 3x older. So,

3(x+5)=4x+5.   --this is the equation

3x+15=4x+5

    -5         -5

3x+10=4x

-3x     -3x

x=10

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If y varies inversely as x, and y = 23 when x<br> 8, find y when x 4.
Virty [35]

Answer:

y = 46

Step-by-step explanation:

Given y varies inversely as x then the equation relating them is

y = \frac{k}{x} ← k is the constant of variation

To find k use the condition y = 23 when x = 8 , then

23 = \frac{k}{8} ( multiply both sides by 8 )

184 = k

y = \frac{184}{x} ← equation of variation

When x = 4 , then

y = \frac{184}{4} = 46

7 0
2 years ago
Seven less than two times a number is 29.
Alexxx [7]
2x-7=29

"Seven less than" => minus 7.
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-7 + 2x = 29
or
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(if you were wondering x is equal to 18)
4 0
3 years ago
(this is 12 year old math) Good evening everyone​
gtnhenbr [62]

Answer:

22 11

Step-by-step explanation:

its a pattern if you look at the trend on the equation

3 0
2 years ago
Read 2 more answers
Help ASAP geometry !
Vera_Pavlovna [14]

Answer:

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Step-by-step explanation:

6 0
3 years ago
The value of y varies directly with x, and y = 18 when x = 12. find y when x = 132.
sveta [45]
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