Ask question

Ask question

All categories

3 years ago

15

What is the answer to -5 + 1/2?

1 answer:

Tema [17]3 years ago

3 0

Answer:

-4 1/2 or -4.5 or -9/2

Step-by-step explanation:

You might be interested in

BRAINLIEST IF CORRECT

lbvjy [14]

Answer:

Step-by-step explanation:

the first is 1/2

second is 1/52

third is 1/4

forth is 1/8

i think thats right any way :)

7 0

3 years ago

Read 2 more answers

Use the quadratic formula to solve the equation. -2x^2-x+7=0.

Furkat [3]

<span>-2x^2-x+7=0
Variable with the highest degree's (exponent) constant, -2 is a, next variable's constant, -1 is b, the constant or number without a variable, 7 is c

using substitution put the numbers into the formula
</span>(-b±√(b^(2)-4ac))/(a^(2))

(-(-1)±√((-1)^(2)-4(-2)(7))/((-2)^(2)) simplify

(1±√(1+56))/4

1±√(57)/4 is your answer

8 0

3 years ago

True or false: the standard deviation of a set of data values is never a negative number

Anestetic [448]

True I think !! Not to sure

8 0

3 years ago

Solve the inequality:<br>x+8 > 14<br>O x26<br>O x2 22<br>Oxs 22<br>Ο κε 6

almond37 [142]

Answer:

Option D, $x > 6$

Step-by-step explanation:

<u>Step 1: Subtract 8 from both sides </u>

<u /> $x + 8 > 14$

$x + 8 - 8 > 14 - 8$

$x > 6$

Answer: Option D, $x > 6$

6 0

3 years ago

Question 4 options: Find the mean and standard deviation for a binomial distribution with 680 trials and a probability of succes

lys-0071 [83]

Answer:

Mean for a binomial distribution = 374

Standard deviation for a binomial distribution = 12.97

Step-by-step explanation:

We are given a binomial distribution with 680 trials and a probability of success of 0.55.

The above situation can be represented through Binomial distribution;

$P(X=r) = \binom{n}{r}p^{r} (1-p)^{n-r} ; x = 0,1,2,3,.....$

where, n = number of trials (samples) taken = 680 trials

r = number of success

p = probability of success which in our question is 0.55

So, it means X <em>~ </em> $Binom(n=680, p=0.55)$

<em><u>Now, we have to find the mean and standard deviation of the given binomial distribution.</u></em>

Mean of Binomial Distribution is given by;

E(X) = n $\times$ p

So, E(X) = 680 $\times$ 0.55 = 374

Standard deviation of Binomial Distribution is given by;

S.D.(X) = $\sqrt{n \times p \times (1-p)}$

= $\sqrt{680 \times 0.55 \times (1-0.55)}$

= $\sqrt{680 \times 0.55 \times 0.45}$ = 12.97

Therefore, Mean and standard deviation for binomial distribution is 374 and 12.97 respectively.

3 0

3 years ago