What is 4f+10f-f= What is (7p+4)-p+2)= What is 5-3j+7+9j+2+

Mathematics

1 answer:

butalik [34]2 years ago

8 0

Answer:

13f

6p+6

14+6j (provided the last symbol is = and not +)

Step-by-step explanation:

the thought is to add like terms

the coefficients the have unknowns (f, p and j) are added together then the constants are added together taking into account the signs

(4+10-1)f = 13f

likewise with the others

You might be interested in

A random sample of 12 recent college graduates reported an average starting salary of $54,000 with a standard deviation of $6,00

Marianna [84]

Answer: a.) $50188 to $57812

Step-by-step explanation: Confidence Interval (CI) is an interval of values in which we are confident the true mean is in.

The interval is calculated as

x ± $z\frac{s}{\sqrt{n} }$

a. For a 95% CI, z-value is 1.96.

Solving:

54,000 ± $1.96.\frac{6000}{\sqrt{12} }$

54,000 ± $1.96\frac{6000}{3.464}$

54,000 ± 1.96*1732.102

54,000 ± 3395

This means the interval is

50605 < μ < 57395

With a 95% confidence interval, the mean starting salary of college graduates is between 50605 and 57395 or from 50188 to 57812$.

b. The mean starting salary for college students in 2017 is $50,516, which is in the confidence interval. Therefore, since we 95% sure the real mean is between 50188 and 57812, there was no significant change since 2017.

4 0

2 years ago

Martin ran 6.5 miles in one hour. At that speed, how many miles will he three hours?

NNADVOKAT [17]

ANSWER: Martin will run 19.5 miles in 3 hours.

STEP-BY-STEP EXPLANATION: 6.5 x 3 = 19.5

7 0

3 years ago

Read 2 more answers

Use the formula C(n, x)pxqn − x to determine the probability of the given event. (Round your answer to four decimal places.) The

miskamm [114]

Answer: 0.1334

Step-by-step explanation:

Given

There are seven trails with a probability of success is $p=\frac{1}{4}$

$\therefore q=1-p\\q=1-\frac{1}{4}\\q=\frac{3}{4}$

Using the binomial distribution, the Probability of exactly no success i.e. x=0 is given by

$\Rightarrow ^7C_0\cdot p^0 \cdot q^{7-0}\\\Rightarrow 1\times(\frac{1}{4})^0 \cdot (\frac{3}{4})^7\\\Rightarrow 1\times 1 \cdot (0.75)^7\\\Rightarrow 0.1334$