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marta [7]
3 years ago
13

Evaluate the expression: 2^{4} ×4-\frac{2}{8}[ Plz answer

Mathematics
2 answers:
alexandr402 [8]3 years ago
8 0
Answer: 63.75 hope it helps
NISA [10]3 years ago
3 0

Answer:

63.75

Step-by-step explanation:

2^4=16

16x4=64

64-2/8=63.75

because 2/8 can be reduced to 1/4 and 1/4 in decimal form is 0.25.

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Can I have help with this, I have drawn out a graph and marked my points so far.
Sidana [21]

Answer:

D. 2x²

Step-by-step explanation:

Ok, so the first thing to do is remember the first number in parentheses is x, and the second number is y.

You're trying to figure out which expression turns x into y in each set.

Just by plugging in the numbers into each expression I found that the answer is 2x².

I'll prove this starting with (1, 2).

1² = 1  

2 x 1 = 2

So, y = 2x²!

Next, (2, 8).

2² = 4

2 x 4 = 8

So, y = 2x²!

I'm not going to demonstrate with the other two but I hope you understand. Just plug the values of x and y into the equation and see which is correct.

4 0
3 years ago
Department stores are about to release a new makeup line, and a promotional kit will be sold for $42.75. The cost to produce the
ohaa [14]

Answer: 569

Step-by-step explanation:

5 0
2 years ago
At what time the sum Rs. 5000 will be doubled at the interest<br>of 10% per annum?​
FromTheMoon [43]

Answer:

Time= 10 years

Step-by-step explanation:

Let total time=t

Initial Amount=5000

Final Amount=10000

Total interest = Final Amount - Initial Amount

                      =10000-5000\\=5000

Simple Interest =\frac{Initial Amount\times time\times rate}{100} \\\\5000=\frac{5000\times t \times 10}{100}\\\frac{t}{10} =1\\t=10 \ years

7 0
3 years ago
Practice: Activating Prior Knowledge
Elena-2011 [213]
Scientific notation is used to write really large numbers, or really small numbers using less digits. For example: 

1. Earth's distance from the sun 150,000,000 kilometers. We can rewrite this in scientific notation as 1.5 x 10^{8}

2. The length of a skin cell is 0.00003 meters. We can rewrite this in scientific notation as 3.0 x 10^{-5}

3. The world population is about 7,000,000,000. We can rewrite this in scientific notation as 7 x 10^{9}
4 0
3 years ago
What polynomial expressions equal 8x^3+64?
Natali5045456 [20]

Answer:

\displaystyle \boxed{8[x + 2][x^2 - 2x + 4]}

Step-by-step explanation:

Use the Difference of Cubes [(a³ - b³)(a² + 2ab + b²)] to figure this out:

\displaystyle 8x^3 + 64 \\ 8[x^3 + 8] \\ \\ x + 2 = \sqrt[3]{x^3 + 8}

Then, since the divisor\factor is in the form of <em>x - c</em>, use what is called Synthetic Division. Remember, in this formula, −c gives you the OPPOSITE terms of what they really are, so do not forget it. Anyway, here is how it is done:

−2| 1 0 0 8

↓ −2 4 −8

___________

1 −2 4 0 → {x}^{2} - 2x + 4

You start by placing the <em>c</em> in the top left corner, then list all the coefficients of your dividend [x³ + 8]. You bring down the original term closest to <em>c</em> then begin your multiplication. Now depending on what symbol your result is tells you whether the next step is to subtract or add, then you continue this process starting with multiplication all the way up until you reach the end. Now, when the last term is 0, that means you have no remainder. Finally, your quotient is one degree less than your dividend, so that 1 in your quotient can be an x², the −2x follows right behind it, then 4, giving you the other factor of x^2 - 2x + 4, attaching this to the first two factors you started out your work on:

\displaystyle \boxed{8[x + 2][x^2 - 2x + 4]}

I am joyous to assist you anytime.

6 0
3 years ago
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