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3 years ago

Factorize -5x - 5yPlease show full and correct working!!!!!!

Mathematics

1 answer:

valina [46]3 years ago

7 0

Answer,

-5(x + y)

Explanation,

Factor out common term

-5

= -5(x + y)

Hope This Helps :-)

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On a recent test in English Jorge scored 17 out of 20 points.His friend Ava has a different English teacher and scored 20 out of

qwelly [4]

Jorge did better on his test.

Step-by-step explanation:

It is difficult to say who scored better on the test because Jorge got less wrong but had less questions on his test, Ava got more wrong but has more questions but overall 17 out of 20 is a 85% when 20 out of 25 is 80%

4 0

4 years ago

If an item is purchased at $500 and it’s value increases at a rate of 5% per year what is the value after four years

qaws [65]

The value of $500 after four years is $610

Step-by-step explanation:

It is given that, the value of $500 increases at a rate of 5% per year.

The exponential formula is given by $y = ab^{x}$ .

where,

a is the initial amount.
b is the growth factor .

The growth factor b is replaced by either (1 + r) or by (1 - r).

where, r is the rate per year.

b= (1+r) represents the increase in growth rate.

b= (1-r) represents the decrease in growth rate.

Here, the growth rate is increased. So the formula is given by $y = a(1+r)^{n}$

where,

The initial amount, a = 500.
Rate, r = 5% = 5/100 = 0.05
Number of years, n= 4.
y = value of the item after 4 years

To find y value :

⇒ $y = 500(1+0.05)^{4}$

⇒ $y = 500 (1.05)^{4}$

⇒ $y = 500 \times 1.22$

⇒ $y = 610$

Therefore, the value of the item after four years is $610.

6 0

3 years ago

X^3 + 2x^2 – 24x ^ write the polynomial in factored form

BigorU [14]

Answer:

x(x+6)(x-4)

Step-by-step explanation:

They all have x in it, which means we can factor out x first.

x(x^2 + 2x -24)

Now we can factor out the inside doing algebra.

Since 6 multiplied by -4 gives us -24 and adding them gives us 2, 6 and -4 works. This means that we can factor out (x+6) and (x-4).

We still have to multiply the x from the beginning, giving us a final equation of

x(x+6)(x-4).

8 0

3 years ago

I don’t understand. online school is hard

LuckyWell [14K]

Answer: Square root of 168 or 2sqr42

Step-by-step explanation:

6 0

3 years ago

If a rectangle has an area of 2x^2+7x+3 find the perimeter

Helen [10]

Answer:

Perimeter of the rectangle=6x+8 square units

Step-by-step explanation:

Given that area of rectangle is $2x^2+7x+3$

Area of rectangle=lw square units

$2x^2+7x+3=2x^2+x+6x+3$

$=x(2x+1)+3(2x+1)$

$=(x+3)(2x+1)$

$2x^2+7x+3=(x+3)(2x+1)$

Comparing the above equation with the given area we get

lw=(x+3)(2x+1)

Therefore length=x+3 and width=2x+1

To find the perimeter :

Perimeter of the rectangle=2(l+w) square units

$=2((x+3)+(2x+1))$

$=2(x+3+2x+1)$

$=2(3x+4)$

$=6x+8$

Therefore perimeter of the rectangle=6x+8 square units

6 0

4 years ago