3 years ago

If ab means 2a + b , then what is 25 ?

Mathematics

1 answer:

NeX [460]3 years ago

3 0

Answer:

Step-by-step explanation:

let a = 2

b = 5

2a + b

Substituting the values,

=> 2(2) + 5

=> 4 + 5

=> 9

You might be interested in

The enrollment at a local college increased 2% over last year's enrollment of 3300. Find the current enrollment.

ella [17]

It should be 3366. To find the percent increased, multiply 3300 by .02 and add that to 3300, giving you 3366.

8 0

3 years ago

A survey of 11 students showed that 8 liked science, 7 liked mathematics, and 4 liked both. How many students just liked science

andreyandreev [35.5K]

Answer:

4 I guess..........not sure but my answer is 4

5 0

3 years ago

What reason does Frederick Lugard use to justify British imperialism?

USPshnik [31]

His opinion was that christianity needed to be spread

5 0

3 years ago

Read 2 more answers

The volume of a sphere is 36 cubic inches. What is the radius of the sphere?

Serjik [45]

Answer:

2.05 inches

Step-by-step explanation:

V = 4/3 x πr³

36=4πr³/3

36x3= 4πr³

108= 4πr³

108/4 = πr³

27= πr^3

27/π =r³

$\sqrt[3]{27 \div \pi}$

r= 2.048in

round off to 2.05in

<u>PROOF</u>

V = 4÷3 x πr³

V= 4/3 x π(2.05)³

V=4/3 x π8.6

V=4×π×8.6/3

V=108/3

V=36in³

Therefore: radius= <u>2.05 inches</u>

8 0

2 years ago

Solve the system of linear equations using the elimination method x=3y;3x-2y=14

vladimir1956 [14]

Answer:

Step-by-step explanation:

$\left\{\begin{array}{ccc}x=3y&\text{subtract}\ 3y\ \text{from both sides}\\3x-2y=14\end{array}\right\\\\\left\{\begin{array}{ccc}x-3y=0&\text{multiply both sides by (-3)}\\3x-2y=14\end{array}\right\\\underline{+\left\{\begin{array}{ccc}-3x+9y=0\\3x-2y=14\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad\qquad7y=14\qquad\text{divide both sides by 7}\\.\qquad\qquad y=2\\\\\text{put the value of y to the first equation:}\\x=3(2)=6$

7 0

3 years ago

If a*b means 2a + b , then what is 2*5 ?

If ab means 2a + b , then what is 25 ?