All categories

3 years ago

Mark and Mike are brothers. The sum of their ages is eleven. Mike's age is ten

Mathematics

2 answers:

ivann1987 [24]3 years ago

8 0

Answer:mark is 7. Mike is 4

Step-by-step explanation:x+y=11. Y=2x-10 thus substituting for y in equation1 we have x+2x-10=11. 3x-10=11. 3x=11+10. 3x=21. X=21/3. X=7. Mike =(2×7)-10=14-10=4

o-na [289]3 years ago

3 0

Step-by-step explanation:

Mark's age is x

so Mike's age is

$2x - 10$

and we know that the sum of their ages is eleven so:

2x+x- 10 = 11

3x-10=11/+10

3x=21/÷3

x=7

Mark is 7 years old and

Mike is 4 years old.

You might be interested in

Chip begins his ride slowly but then stops to talk with some friends. After a few minutes, he continues his ride, gradually incr

lapo4ka [179]

What is the question? I don't understand please explain?

6 0

3 years ago

Could I have the answer to factorise 16a+12b

Tanzania [10]

Factor out the GCF, which is 4.... 4(4a+3b)

6 0

3 years ago

Read 2 more answers

1. The volume of a cube is 27 cubic inches. How long is its side? 3

lianna [129]

If I'm not wrong, it should be 27cm^3. Hope this helps!!

3 0

3 years ago

Read 2 more answers

Which function represents a reflection of f(x) = 3/8 (4)x across the y-axis?

almond37 [142]

Answer:

D is correct option. $g(x)=\frac{3}{8}\cdot (4)^{-x}$

Step-by-step explanation:

We are given a function $f(x)=\frac{3}{8}\cdot (4)^x$

We need to find new function reflection of f(x) across the y-axis.

When function reflection across y-axis $x\rightarrow -x$

$\text{Reflection across y-axis}f(x)\rightarrow f(-x)$

Therefore, $f(-x)=\frac{3}{8}\cdot (4)^{-x}$

New function, $g(x)=f(-x)$

$g(x)=\frac{3}{8}\cdot (4)^{-x}$

Thus, D is correct option.

6 0

3 years ago

Read 2 more answers

Sandeep has twice as much as sonia. together they have rs 150. how much money does sonia have.

Nimfa-mama [501]

It says Sandeep has twice as much as Sonia. Thus, let Sandeep's amount be 2x and Sonia's amount be x.

Now, together they have 150.

Thus, the equation;

x+2x=150

Now let's solve the equation;

3x=150

x=150/3

x=50

Thus, Sonia has 50

6 0

3 years ago