All categories

3 years ago

The sum of ages of Nira before 10 years and after 10 years is 60.find her present age.

Mathematics

2 answers:

mojhsa [17]3 years ago

4 0

Answer:

<h3>Nira's present age= 30</h3>

Step-by-step explanation:

$her \: age \: before \: 10years \: = x - 10 \\ her \: age \: after \: 10years \: = x + 10 \\ therefore.(x - 10) + (x + 10) = 60 \\ x - 10 + x + 10 = 60 \\ 2x = 60 \\ x = 60 \div 2 \\ x = 30 \\ hope \: it \: helps....$

vodomira [7]3 years ago

3 0

Answer:

I think Nira would be 30 years old

Step-by-step explanation:

So 10 years before and after her present age added together equals 60. So if she was 30, it would be 20+40 which =60.

You might be interested in

(2×100)+(9×10)+(6×1)+(3×1/10)+(8×1/100)= In standard form

Sidana [21]

We know that standard form = the number that is not expanded.
This equation is expanded so standard form =

2*100=200
9*10=90
6*1=6
3*1/10= 0.3
8*1/100=0.08

200+90=290
290+6=296
296+0.3=296.3
296.3+0.08=296.38

Your answer is 296.38
Hope this helped!

5 0

3 years ago

Hannah is participating in a marathon. She can run 4 miles in 50 minutes. At this rate, how long will it take Hannah to run 30 m

ra1l [238]

The answer is c

Because if it takes 50 minutes to run 4 miles you need to divide 50/4 and you will get 12.5 and then multiply that by 30 cause she is trying to run 30 miles and that will get you 375 and then divide that by 60 cause their are 60 minutes in a hour and you will get 6.25

3 0

3 years ago

For the function f ( x ) = − 2 x + 3 , evaluate and simplify the difference quotient.

aev [14]

Answer:

fraction x-3/2 is your answer for Sure

Step-by-step explanation:

y=-2x+3

x=2y+3

x-3=2y

x-3/2=y

6 0

3 years ago

Look at the picture

IRISSAK [1]

Answer:

x = 10

Step-by-step explanation:

In the last step, you can see that the fraction $\frac{1}{5}$ has been multiplied by its reciprocal $\frac{5}{1}$ , making it cancel out. The reciprocal has been multiplied to both sides, so all you need to do is multiply $\frac{6}{3}$ · $\frac{5}{1}$ :

6 · 5 = 30

3 · 1 = 3

So now you should have the fraction:

x = $\frac{30}{3}$

But, you can still simplify the fraction by dividing 30 by 3:

x = 10

7 0

3 years ago

Determine the equation of g(x) that results from translating the function f(x)=x^2+9 upward 10 units.

Rus_ich [418]

The simple/ common sense method:
The typical lay out of a quadratic equation is ax^2+bx+c
'c' represents where the line crosses the 'y' axis.
The equation is only translated in the 'y' (upwards/downwards) direction, therefore only the 'c' component of the equation is going to change.
A translation upwards of 10 units means that the line will cross the 'y' axis 10 places higher.
9+10=19,
therefore c=19.
The new equation is: y=x^2+19 

The most complicated/thorough method:
This is useful for when the graph is translated both along the 'y' axis and 'x' axis.
ax^2+bx+c
a=1, b=0, c=9
Find the vertex (the highest of lowest point) of f(x).
Use the -b/2a formula to find the 'x' coordinate of your vertex..
x= -0/2*1, your x coordinate is therefore 0.
substitute your x coordinate into your equation to find your y coordinate..
y= 0^2+0+9
y=9.
Your coordinates of your vertex f(x) are therefore (0,9) 
The translation of upward 10 units means that the y coordinate of the vertex will increase by 10. The coordinates of the vertex g(x) are therefore:
(0, 19) 
substitute your vertex's y coordinate into f(x)
19=x^2+c
19=0+c
c=19
therefore g(x)=x^2+19

7 0

3 years ago

Read 2 more answers