Ben is 3 times as old as Daniel and is also 4 years older than Daniel. How old is Daniel

Mathematics

1 answer:

Blababa [14]3 years ago

7 0

Ishaan is 2, so ben is 8 years old because 4 x 2 = 8

You might be interested in

Solve both by substitution method (algebra 2) and show work please<br><br> -2x-7y=22<br>-7x-5y=-1

Alex17521 [72]

$\bf \begin{cases}
-2x-7y=22\\
-7x-5y=-1
\end{cases}\qquad \textit{let's solve the \underline{second one} for "x"}
\\\\\\
-7x-5y=-1\implies -7x=5y-1\implies x=\cfrac{5y-1}{-7}
\\\\\\
\boxed{x=\cfrac{1-5y}{7}}\impliedby \textit{now, let's substitute it in the \underline{first one}}
\\\\\\$

$\bf -2\left( \frac{1-5y}{7} \right)-7y=22\implies \cfrac{10y-2}{7}-7y=22
\\\\\\
\textit{now, let's multiply both sides by 7, to toss the denominator}
\\\\\\
7\left( \cfrac{10y-2}{7}-7y \right)=7(22)\implies 10y-2-49y=154
\\\\\\
-39y=156\implies y=\cfrac{154}{-39}\implies \boxed{y=-4}
\\\\\\
\textit{now, let's use that in the \underline{first one}}
\\\\\\
-2x-7(-4)=22\implies -2x+28=22\implies 6=2x\implies \cfrac{6}{2}=x
\\\\\\
\boxed{3=x}$

4 0

2 years ago

Two and one half times the sum of nine and twelve

ankoles [38]

2.5 x (9+12) = 52.5

Hope that helps!

8 0

3 years ago

-5 + 8 • -7 <br> help lols

iris [78.8K]

Answer:

Step-by-step explanation:

-5 + (8 x -7)

using PEMDAS, (8 x -7) = -56

so -5 + -56 = -61

5 0

2 years ago

Hey guys i just joined how do i do this

Sergeeva-Olga [200]

Answer: you can ask questions your struggling with and people like me will help you answer them. You can also help other people answer their questions and get points for it

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

Which best describes the relationship between the successive terms in the sequence shown?

Bingel [31]

THE ANSWER IS THE COMMON DIFFERENCE IS -7.2 (first answer)

PLEASE MARK BRAINLIEST :)

4 0

2 years ago

Read 2 more answers