All categories

3 years ago

Can you help we with this question please

Mathematics

2 answers:

blondinia [14]3 years ago

8 0

130 + 35 + 75= 240
240/400 = 120/200 = 12/20 = 3/5

kvv77 [185]3 years ago

7 0

Answer:

$\frac{2}{5}$ left

Step-by-step explanation:

Total the number of counters given out, that is

35 + 130 + 75 = 240

Subtract this from 400 to find the amount left

400 - 240 = 160 ← amount left

The fraction left is calculated as

$\frac{left}{total}$ = $\frac{160}{400}$ = $\frac{16}{40}$ = $\frac{2}{5}$

You might be interested in

Simplify square root of 2 over cube root of 2.

Fed [463]

Answer:

2 to the power of one sixth

Step-by-step explanation:

Assuming you don't already know this, any type of root can be expressed as an exponent. Generally speaking:

$\sqrt[n]{x} = {x}^{ \frac{1}{n} }$

So you can rewrite the given fraction as

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

and then reduce as you normally would. That is, if the bases of the numerator and denominator are the same, then you can subtract the denominator's exponent from the numerator's exponent like so:

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

Since

$\frac{1}{2} - \frac{1}{3} = \frac{3}{6} - \frac{2}{6} = \frac{1}{6}$

the answer is

${2}^{ \frac{1}{6} } \: or \: \sqrt[6]{2}$

3 0

3 years ago

Read 2 more answers

Find all solutions to the equation. cos^2x + 2 cos x + 1 = 0

mixas84 [53]

$\cos^2(x)+2\cos(x)+1=0\\\\ (\cos(x)+1)^2=0\\\\ \text{So:}\\\\ \cos(x)+1=0\\\\ \cos(x)=-1\\\\ \boxed{x=\pi+2k\pi},~k\in\mathbb{Z}$

5 0

3 years ago

Read 2 more answers

The eighth-grade class is planning a trip to Washington, D.C. this spring. They need a minimum of

Hoochie [10]

Answer:

There needs to be 174 Students in the 8th grade class.

Step-by-step explanation:

173(1/3) is 58

58+17=75

3 0

2 years ago

Solve for z. 3 + 9z = –7 + 10z z =

stiv31 [10]

The answer should be z = 10

6 0

3 years ago

Read 2 more answers

Michael breeds chickens and ducks.

Paladinen [302]

4 and a half ducks.
That's pretty much the answer.

8 0

3 years ago

Read 2 more answers