All categories

3 years ago

Evaluate ƒ(x) = –4x – 5 for x = –1.

Mathematics

1 answer:

Alenkinab [10]3 years ago

7 0

Change your f(x) to y.(they are pretty much the same thing)

Plug in your -1 into the 'x' spot.

-4(-1)-5

multiply -4 and -1 to get 4(negative times a negative = a positive)

4-5

subtract.

-1

You might be interested in

Skyler goes to a school which has 100 students in it. She asks 40 random students whether they like the new 8.30 am start to the

dybincka [34]

Answer:

75 students

Step-by-step explanation:

first write a ratio of the students asked to students dislike

40:30, 40 to 30, or 40/30

now simplify the ratio

4/3

now she asked 40 students, so we have to find out the unit rate

so we have to flip the fraction to 3/4 and then divided the top and bottom by 4

0.75/1

now multiply the top and bottom by 100

75/100

75 students

8 0

3 years ago

Suppose X has a continuous uniform distribution over the interval [1.3, 6.2]. Round your answers to 3 decimal places.

goldenfox [79]

Answer:

(a) 3.75

(b) 2.00083

Step-by-step explanation:

It is provided that X has a continuous uniform distribution over the interval [1.3, 6.2].

(a)

Compute the mean of X as follows:

$\mu_{X}=\frac{a+b}{2}=\frac{1.3+6.2}{2}=3.75$

(b)

Compute the variance of X as follows:

$\sigm^{2}_{X}=\frac{(b-a)^{2}}{12}=\frac{(6.2-1.3)^{2}}{12}=2.00083$

(c)

Compute the value of P(X < 3.7) as follows:

$P(X < 3.7)=\int\limits^{3.7}_{1.3}{\frac{1}{6.2-1.3}}\, dx\\\\=\frac{1}{4.9}\times [x]^{3.7}_{1.3}\\\\=\frac{3.7-1.3}{4.9}\\\\\approx 0.4898$

Thus, the value of P(X < 3.7) is 0.4898.

5 0

3 years ago

What is the number six million, thirty thousand, expressed in scientific notation?

irina1246 [14]

six million, thirty thousand <span>6, 030, 000 expressed in scientific notation
</span>

<span>6.03×10^6.</span>

4 0

3 years ago

Aldo caught a 5 1/2 pound fish. How much did it weigh in ounces? answer in whole number or mixed number in simplest form.

Anarel [89]

1 pound is 16 ounces, so $5\frac{1}{2} lb * 16=80\frac{16}{2} oz=88oz$ .

3 0

3 years ago

The fractions of 4/6 & 5/10

telo118 [61]

I don't understand your question are you multiplying or what

7 0

3 years ago

Read 2 more answers