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4 years ago

Evaluate. (1/4)^-2 - (5^0×2)×1^-1

Mathematics

2 answers:

____ [38]4 years ago

7 0

14 would be the answer
Hope this helps...

il63 [147K]4 years ago

4 0

(1/4)^-2 - (5^0×2)×1^-1
(1/4)^-2 - (1×2)×1^-1
(1/4)^-2 - 2×1^-1
0.25^-2 - 2×1^-1
16 - 2×1
16 - 2
14

You're welcome

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Student Produced Response - Calculator

faltersainse [42]

Answer:

$\dfrac{a}{b}=0.75$ .

Step-by-step explanation:

If two equations $a_1x+b_1y+c_1=0$ and $a_2x+b_2y+c_2=0$ has infinitely many solutions, then

$\dfrac{a_1}{a_2}=\dfrac{b_1}{b_2}=\dfrac{c_1}{c_2}$

The given equations are

$ax+by=10$

$3x+4y=20$

It is given that the above system of equations has infinitely many solutions. So,

$\dfrac{a}{3}=\dfrac{b}{4}=\dfrac{10}{20}$

$\dfrac{a}{3}=\dfrac{b}{4}=\dfrac{1}{2}$

Now,

$\dfrac{a}{3}=\dfrac{1}{2}$ and $\dfrac{b}{4}=\dfrac{1}{2}$

$a=\dfrac{3}{2}$ and $b=\dfrac{4}{2}$

$a=1.5$ and $b=2$

So, a=1.5 and b=2.

Now,

$\dfrac{a}{b}=\dfrac{1.5}{2}=0.75$

Therefore, $\dfrac{a}{b}=0.75$ .

5 0

4 years ago

AN ARTICLE STATED THAT “INTERNAL SURVEYS PAID FOR BY DIRECTORY ASSISTANCE PROVIDERS SHOW THAT EVEN THE MOST ACCURATE COMPANIES G

yan [13]

Using the binomial distribution, there is a 0.3474 = 34.74% probability of getting one wrong number.

<h3>What is the binomial distribution formula?</h3>

The formula is:

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$C_{n,x} = \frac{n!}{x!(n-x)!}$

The parameters are:

x is the number of successes.

n is the number of trials.

p is the probability of a success on a single trial.

For this problem, the values of the parameters are given by:

p = 0.15, n = 10.

The probability of getting one wrong number is P(X = 1), hence:

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

P(X = 1) = C(10,1) x (0.15)¹ x (0.85)^9 = 0.3474

0.3474 = 34.74% probability of getting one wrong number.

More can be learned about the binomial distribution at brainly.com/question/24863377

#SPJ1

8 0

2 years ago

Which of the following is the equation of the quadratic function below?

exis [7]

Answer:

A. y = x² - 9x + 18

Step-by-step explanation:

The key thing to look for in this graph is the y-intercept (where the graph will hit the y-axis).

We can't see exactly where y-intercept is, but we know it is a positive number.

In a standard form quadratic equation:

y = ax² + bx + c

'c' tells you what the y-intercept is.

The choices with positive y-intercept are A and B.

Again, we can't see exactly where y-intercept is, but we know it is not 1.

y = x² - 9x + 18

has a positive y-intercept that is not 1,

thus the answer is A.

7 0

3 years ago

três amigos levaram figurinhas para trocar na escola.Fernando levou 10 mas em média foram levadas 11 figurinhas por pessoa quant

kicyunya [14]

We are given

Number of person took cards =3

Average number of cards taken = 11 per person

so, we can find total number of cards

Total number of cards= (average number of cards)*(number of persons)

Total number of cards is

$=3\times 11$

$=33$

Fernando took 10

so,

Fernando card +other two cards =33

10 +other two cards =33

Other two cards =23..............Answer

6 0

4 years ago

3. Alex is enjoying playing in the pool. He enjoys jumping

hichkok12 [17]

Answer:

32 degrees celsius

Step-by-step explanation:

To find the difference between two numbers, take the end point and subtract the start point from it.

End point = 42 degrees

Start point = 10 degrees

42 - 10 = 32 degree difference

6 0

3 years ago

Read 2 more answers