All categories

3 years ago

Help me please! someone?

Mathematics

2 answers:

elena55 [62]3 years ago

3 0

Answer:

<em>105 for 3 hours</em>

Step-by-step explanation:

First we have to find that how much he is charged for 1 hour.

140 : 4 = 35 per hour

Then we have to find how much he is charged for 3 hours by multiplying with 3.

3 x 35 = 105 per 3 hours

Alexus [3.1K]3 years ago

3 0

Answer:

£105

Step-by-step explanation:

let y represent the unknown amount

£150 = 4 hrs

y = 3 hrs

we then cross multiply

£150 x 3 hrs = y x 4 hrs

450= 4y

divide both sides by 4

450/4 = 4y/4

105 = y

You might be interested in

<img src="https://tex.z-dn.net/?f=%20%5Chuge%20%20%5Cred%7B%5Cboxed%7B%20%5Ccolorbox%7Bblack%7D%7B%20%5Ccolor%7Bgold%7D%7Bquesti

timofeeve [1]

Answer:

3√2

Step-by-step explanation:

First, combine all the numbers in the square root, and then square root the number provided:

√(3 + 3 + 3 + 3 + 3 + 3) = √18

When square rooting, first, find prime factors of the number, 18. If there are pairs, they will be combined into a whole number:

√18 = √(3 * 3 * 2) = 3√2

3√2 is your answer.

3 0

2 years ago

Find the intervals of convergence of f(x), f '(x), f ''(x), and ∫f(x) dx. (Be sure to include a check for convergence at the end

Gwar [14]

Answer: See solution and explanations in the attached documents

Step-by-step explanation:

See explanations in the attached documents

3 0

3 years ago

Find the value of D that makes the fraction equivalent

IgorLugansk [536]

40 I hope I helped you

6 0

3 years ago

Read 2 more answers

An open box is made from a 20 cm x 3 cm piece of tin by cutting a square from each corner and folding up the edges. The area of

Marta_Voda [28]

Answer:

Length of the final sides: 6 cm and 16 cm

Step-by-step explanation:

The lengths of the sides of the original box are

$L=20 cm\\W=10 cm$

Later, a piece of tin is cut out from each corner; the piece cut out has the shape of the square: we can call the length of its generic side x. Therefore, the dimensions of the box will now be:

$L'=L-2x\\W'=W-2x$

We also know that the area is

$A=96 cm^2$

And the area can be written as product of length and width, therefore:

$A=L'W'$

So we find:

$A=(L-2x)(W-2x)\\96=(20-2x)(10-2x)$

Solving for x,

$96=200-20x-40x+4x^2\\4x^2-60x+104=0\\\\x^2-15x-26=0$

Which has two solutions:

x = 13 cm (this is larger than the initial length of the width, therefore we discard it)

x = 2 cm

So, the length of the new sides are

$L=20-2x=20-2(2)=16 cm\\W=10-2x=10-2(2)=6 cm$

7 0

3 years ago

5 + 2n2 when n = 3. <br><br> (The 2 after the n is an exponent)

Pani-rosa [81]

Answer:

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers