All categories

2 years ago

Which expression is equivalent to 81-16x^2

Mathematics

1 answer:

iris [78.8K]2 years ago

4 0

Is should be (9-4x)•(9+4x)

You might be interested in

Find the area of a right triangle with a base length of 12 units and a height of 12 units

exis [7]

Answer:

Step-by-step explanation:

It showed us the formula to solve it.

12x12 = 144

144 divided by 2 = 72

72 is the answer.

6 0

3 years ago

Read 2 more answers

Ryan deposits $775 in an account that pays 4.24% simple interest for four years. Brian deposits $775 in an account that pays 4.2

Gre4nikov [31]

Hope this helps! :) Took me a long time...

Answers:

a. $131.44

b. $906.44

c. $32.86

d. $32.86

e. $32.86

f. $807.86

g. $34.25

h. Ryan earned more; he earned interest on top of his interest since he opened up a new account.

4 0

3 years ago

Read 2 more answers

5-(-1)÷-2-2=-3/2 I could really use the answer to this.

raketka [301]

Hey there!

$\bold{5-(-1)\div2-2=-\frac{3}{2}}$
$\bold{5-(-1)=5+1=6}$
$\bold{2-2=0}$
$\rightarrow={\bold{\frac{6\div6}{0\div6}=\frac{1}{0}}}$
$\boxed{\boxed{\bold{Answer: FALSE\rightarrow\frac{1}{0}\neq-\frac{3}{2}}}}$ $\checkmark$

Good luck on your assignment and enjoy your day!

~ $\bold{LoveYourselfFirst:)}$

4 0

3 years ago

If x-y=√3, x²-y²=√5 & a²-a√3+1=0, then find out the value of x+y

Lemur [1.5K]

Answer:

√15/3

Step-by-step explanation:

x² - y² =√5

(x +y)*(x -y) = √5

(x +y) * √3 = √5

x+y = √5 / √3

x +y = √5*√3 / √3*√3

x +y = √15/3

4 0

2 years ago

This is what I need to know

I am Lyosha [343]

$\bf \begin{array}{ccllll}
\$&minutes\\
\textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash\\
920,000&46,000,000\\
x&1
\end{array}\implies \cfrac{920,000}{1}=\cfrac{46,000,000}{x}$
so solve for "x", to see how much is the company paying for the purchase of 1 minute

now, they're plan to sell the minute for 8cents, how much is the profit?
that is, the difference from their cost of the cents to the planned selling price.

bear in mind, is 46,000,000 minutes, so whatever value you get for 1minute,
you need to multiply it for 46,000,000 to get the actual cost.

and the revenue from the sell of 8cents per minute, is of course, 8 * 46,000,000

profit = revenue - cost

7 0

3 years ago