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4 years ago

What is 3/5 plus 3/8

Mathematics

2 answers:

NemiM [27]4 years ago

8 0

First I have to find the LCD And I got 24/40 & 15/40 Then when I got that I added both together and I got 30/40

yKpoI14uk [10]4 years ago

7 0

Every time you want to add 2 fractions, they need to have the same denominator.
Since 8 and 5 are not factors of the same number, you multiply 3/5 by 8, and 3/8 by 5. So you get:
$\frac{3*8}{5*8} + \frac{3*5}{8*5}$
$\frac{24}{40} + \frac{15}{40}$
$\frac{24+15}{40}$
$\frac{39}{40}$

Hope this Helps! :D

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9x5,000=_________thousands

NISA [10]

The answer is 45,000 or 45 Thousand.

7 0

4 years ago

Read 2 more answers

Jamie received £26 pocket money last week. He spent it as follows: 10% on sweets, 25% on magazines 15% on games How much did Jam

navik [9.2K]

Answer:

Total money left with Jamie = £13

Step-by-step explanation:

Jamie received pocket money = £26

He spent on sweets = 10% of total pocket money

Expense on magazines = 25% of the total money

Expense on games = 15% of the pocket money

Total expenditure on sweets, magazines and games = $\frac{10}{100}+\frac{25}{100}+\frac{15}{100}$

= $\frac{50}{100}$ Or 50% of the pocket money he received

Therefore, money left with Jamie = 50% of total money he received as pocket money

= $\frac{50}{100}\times 26$

= £13

6 0

3 years ago

What should be done first to simplify the expression?

Olin [163]

Answer:

add 3+3

Step-by-step explanation:

8 0

4 years ago

Once his parachute is open, a skydiver descends at a rate of 25 feet per second. 90 seconds after the parachute opens, his altit

ss7ja [257]

Using the information given and linear function concepts, it is found that:

a) The equation is: $y(t) = -25t + 5000$ .

b) The skydiver’s altitude after the parachute has been open for 2 minutes is of 2000 feet.

c) It takes 200 seconds for the skydiver to reach the ground.

<h3>What is a linear function?</h3>

A linear function is modeled by:

$y(t) = mt + b$

In which:

m is the slope, which is the rate of change, that is, by how much y changes when t changes by 1.

b is the y-intercept, which is the value of y when x = 0.

Item a:

The skydiver descends at a rate of 25 feet per second, hence $m = -25$ .

Then:

$y(t) = -25t + b$

<u>90 seconds after the parachute opens, his altitude is 2750 feet</u>, which means that when $t = 90, y = 2750$ , which is used to find b. Then:

$2750 = -25(90) + b$

$b = 5000$

Hence, the equation is:

$y(t) = -25t + 5000$ .

Item b:

Time is in seconds, hence, this is y(120).

$y(120) = -25(120) + 5000 = 2000$

The skydiver’s altitude after the parachute has been open for 2 minutes is of 2000 feet.

Item c:

The time it takes to reach the ground is t for which y(t) = 0, hence:

$-25t + 5000 = 0$

$25t = 5000$

$t = \frac{5000}{25}$

$t = 200$

It takes 200 seconds for the skydiver to reach the ground.

You can learn more about linear functions at brainly.com/question/26065573

8 0

3 years ago

Find the value of the variable. If your answer is not an integer, leave it in simplest radical form.

AlekseyPX

Answer:

$\frac{5\sqrt{2} }{2}$

Step-by-step explanation:

$x: \text{opposite side of the angle of 45\º}$

$5: \text{hypotenuse of the right triangle}$

$\sin(\theta)=\frac{\text{opp}}{\text{hyp}} \Rightarrow \sin(45\º)=\frac{x}{5}$

$\text{Once }\sin(45\º)=\frac{\sqrt{2} }{2}$

$\frac{\sqrt{2} }{2} =\frac{x}{5} \Rightarrow 2x=5\sqrt{2} \Rightarrow x=\frac{5\sqrt{2} }{2}$

You can just remember that 5 is the diagonal of a square of side length x.

$5=x\sqrt{2} \Rightarrow x=\frac{5}{\sqrt{2} } \Rightarrow x=\frac{5}{\sqrt{2} } \cdot \frac{\sqrt{2} }{\sqrt{2} } = \frac{5\sqrt{2} }{2}$

5 0

4 years ago