Question

9) In AABC if AB=Ae. Angle B-40° then angle C
d) 70cm
a) 100°
b) 40°
c) 70°
10) When 5 is added to twice a number we obtain 25 then mumbarin
d) 80°​

Answer 1

Answer:

10) answer:-

Let the given number be x.

According to the question -

\begin{gathered} = > \: 5 + 2x = 25 \\ \\ = > \: 2x = 25 - 5 \\ \\ = > \: 2x = 20 \\ \\ = > \: x = \frac{20}{2} \\ \\= > x \: = 10\end{gathered}=>5+2x=25=>2x=25−5=>2x=20=>x=220=>x=10

Verifying it:-

Here, L.H.S. = 5 + 2x

and R.H.S. = 25

Solving the L.H.S.

=> 5 + 2x

Putting the value of x i.e. 10

So, the equation becomes

=> 5 + 2 × 10

=> 5 + 20

=> 25 = R.H.S.

Therefore, the correct value of x is 10.

Answer:-

So, the number (x) is 10. Therefore, option b.) is correct.

Step-by-step explanation:

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