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3 years ago

Multiply out and simplify (x+5)(x-1)

Mathematics

2 answers:

My name is Ann [436]3 years ago

7 0

Hi! Let's get solving. :D

Okay.. This is a double bracket, so use the '' Waves '' method to expand the bracket. I don't mean to be lazy, but it's kinda hard to explain the working here, so here's a brilliant video that explains this method:

https://youtu.be/Dvo1Q-yBBhk

(Cognito is a brilliant source for KS3, KS4 revision!)

<em><u>Answer:</u></em>

X^2+4−5

Stay safe! :)

Note: I'm not a maths expert, please double check your answer.

Serhud [2]3 years ago

4 0

Answer:

x^2+4-5

Step-by-step explanation:

the first box multiply the next box

x^2-1x+5x-5

x^2+4x-5

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djyliett [7]

Well it depends what your asking, considering there’s no question mark.

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3 years ago

Read 2 more answers

A tap fills an eighty litre tank in 5 minutes. What is the rate of flow of water with respect to

Zolol [24]

Answer:

0.27 lt/s

Step-by-step explanation:

80 liters in 5 minutes

5 minutes are 300 seconds (5x60)

We know how many seconds we need to fill up the tank (300 seconds for 80 liters). Now we need to know how many liters we can fill up in 1 second, as the question requires "liters per second".

80 lt / 300 sec

X lt / 1 sec

80 x 1

---------- = X

300

X = 0.2666666...

X = 0.27 lt / s

3 0

3 years ago

Factorize <br><img src="https://tex.z-dn.net/?f=x%20%7B%3F%7D%5E%7B2%7D%20%20%20%20%20-%20x%20-%206" id="TexFormula1" title="x {

dmitriy555 [2]

<h2><u>Given</u> :-</h2>

x^2 - x - 6

<h2><u>Solution</u> :-</h2>

Factorisation :-

x^2 - x - 6

= (x - 3)(x + 2)

$\\$

Answered by - ItzMaster

5 0

3 years ago

A principal of $1900 was invested at 3.75% interest, compounded annually. Let be the number of years since the start of the inve

Anna11 [10]

Answer:

$y(t) = \$1900*1.0375^t$

Step-by-step explanation:

If y is the future value of the $1900 investment, in dollars, after t years at a rate of 3.75% per year, compounded annually. The exponential function that describes the relationship between the variables y and t is:

$y(t) = \$1900*(1.0375)^t$

This relationship means that for every year t, the amount y will increase by a factor of 1.0375.

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3 years ago

a retangle has an area of 6 square meters. what will be the area of the retangle if each side length is increased by a factor 5?

Verdich [7]

Area=l*b, L=(x+5) And B=x, Area=6. 6=(x+5)(x), 6=x^2+5x, X^2 +5x-6=0,

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3 years ago