All categories

3 years ago

A) (x + y + 4).(x + y –4)

Mathematics

1 answer:

miv72 [106K]3 years ago

5 0

Answer:

if you want to factorise it answer will be : (x+y)^2 - 4^2

and if you have to expand it anwer will be x^2 + y^2 + 2xy -16

You might be interested in

Iiiiiiiidddddddddkkkkkkkkk

Artyom0805 [142]

Slope-Intercept Form: y = mx + b, with m = slope and b = y-intercept

So remember that parallel lines have the same slope. And since Line a's slope is 5/7, and line a and b are parallel to each other, this means that line b's slope is 5/7.

7 0

3 years ago

If you have a mass of 55g that has a volume of 11 ml, what is the density?

Hitman42 [59]

Answer:

D=5g/ml

Step-by-step explanation:

D=M/V

D=55/11

5 0

3 years ago

How do you solve .8931 ÷3

oksano4ka [1.4K]

0.8931/3 is equal to 0.2977

3 0

3 years ago

$4000 is invested in a mutual fund that pays annual interest compounded quarterly for 15 years. What annual interest is needed t

Neporo4naja [7]

Answer:

The interest needed to reach that value of $6000 is 2.75%

Step-by-step explanation:

Given as :

The principal that invested in mutual fund = p = $4000

The time period = t = 15 years

The Amount after 15 years = A = $6000

Let The interest needed to reach that value = r%

Now, According to question

From Compound Interest method

Amount = principal × $(1+\dfrac{\textrm rate}{100})^{\textrm time}$

Or, A = p × $(1+\dfrac{\textrm r}{100})^{\textrm t}$

Or, $6000 = $4000 × $(1+\dfrac{\textrm r}{100})^{\textrm 15}$

or, $\dfrac{6000}{4000}$ = $(1+\dfrac{\textrm r}{100})^{\textrm 15}$

Or, $\frac{3}{2}$ = $(1+\dfrac{\textrm r}{100})^{\textrm 15}$

or, 1.5 = $(1+\dfrac{\textrm r}{100})^{\textrm 15}$

or, $1.5^{\frac{1}{15}}$ = $(1+\dfrac{\textrm r}{100})$

or, 1.0275 = $(1+\dfrac{\textrm r}{100})$

or, 1.0275 - 1 = $\dfrac{r}{100}$

or, 0.0275 = $\dfrac{r}{100}$

∴ r = 0.0275 × 100

I.e r = 2.75

So, The interest needed to reach that value = r = 2.75%

Hence,The interest needed to reach that value of $6000 is 2.75% Answer

3 0

3 years ago

Please can you help with these math?

Umnica [9.8K]

Answer:

1) a) 58m

b) sqrt(130) m

2) 13.03 m

3 0

3 years ago