All categories

3 years ago

A student studied for 1 hour and earned a 50% on her test. If she had studied for 2

Mathematics

1 answer:

marshall27 [118]3 years ago

3 0

You have to double 1 and 50 to get 2 and 100

1:50 = 2:100

1x2=2

50x2=100

So the statement, if she studied for 2 hours, she would have gotten 100%, makes sense

Hope this helps!

You might be interested in

Can anyone help me? Thank you! ^-^

I am Lyosha [343]

Answer: x<16

Step-by-step explanation: Mason subtracted 5 from 11 and got 6, when he really should have added 5 to 11 to get x<16.

4 0

3 years ago

Graph a line with a slope of -2/5 That contains the point (-3,5)

love history [14]

put one point on (-3,5) and another point on (2,3)

7 0

3 years ago

Find the perimeter of the triangle .

lawyer [7]

Answer:

P = 9x + 22

Step-by-step explanation:

Perimeter = sum of all sides

P = (3x + 11) + (3x + 11) + (3x)

P = 9x + 22

I hope this helps! God bless

5 0

2 years ago

Angie earns $55000 per year. Each year she revives a $1700 increase in annual salary. What will Angie's annual salary be for the

brilliants [131]

If she starts with 55000 per year, and she get 1700 per year extra, after fifteen years this extra will be 1700*15, or 25500. Add this to her original salary of 55000 per year to get $80500.

5 0

3 years ago

Solving Exponential and Logarithmic Equations In Exercise, solve for x. In 2x - In(3x - 1) = 0

LenKa [72]

Answer:

$\frac{-1}{3x^2-x}$

Step-by-step explanation:

If f(x) is in th form of f(x)=g(x)-h(x) then f'(x)=g'(x) - h'(x)
When f(x)=z(g(x)) then f'(x)= z'(g(x))g'(x) (called as chain rule)

using these information:

g(x)=ln2x then g'(x)= $\frac{(2x)'}{2x} =\frac{2}{2x}=\frac{1}{x}$

h(x)=In(3x - 1) then h'(x)= $\frac{(3x-1)'}{3x-1} =\frac{3}{3x-1}f'(x)=g'(x) - h'(x) =[tex]\frac{1}{x} - \frac{3}{3x-1} =\frac{-1}{3x^2-x}$

7 0

4 years ago