All categories

3 years ago

Need help ASAP. Thank you.

Mathematics

1 answer:

andre [41]3 years ago

7 0

Answer:

X < 4

Step-by-step explanation:

Since the circle is not coloured sign

$\geqslant or \leqslant$

Cannot be used.

You might be interested in

Which equation can be used to find the unknown length, b, in this triangle?

Paha777 [63]

Answer:

use pythagorean theorem

Step-by-step explanation:

a^2+b^2=c^2

8 0

3 years ago

Consider the quadratic function Y= -(x-3)^2+4

wlad13 [49]

Answer:

-(x^2-2*x*3+3^2)+4=-x^2+6x-9+4=x^2+6x-5

Step-by-step explanation:

4 0

3 years ago

A test consists of 10 true/false questions. To pass the test a student must answer at least 88 questions correctly. If a student

Zanzabum

Answer:

The probability that the student is going to pass the test is 0.0545

Step-by-step explanation:

The variable that says the number of correct questions follows a Binomial distribution, because there are n identical and independent events with a probability p of success and a probability 1-p of fail. So, the probability of get x questions correct is:

$P(x)=\frac{n!}{x!(n-x)!} *p^{x} *(1-p)^{n-x}$

Where n is equal to 10 questions and p is the probability of get a correct answers, so p is equal to 1/2

Then, if the student pass the test with at least 8 questions correct, the probability P of that is:

P = P(8) + P(9) + P(10)

$P=(\frac{10!}{8!(10-8)!}*0.5^{8}*(0.5)^{10-8})+(\frac{10!}{9!(10-9)!} *0.5^{9} *(0.5)^{10-9})+(\frac{10!}{10!(10-10)!} *0.5^{10} *(0.5)^{10-10})$

P = 0.0439 + 0.0097 + 0.0009

P = 0.0545

8 0

3 years ago

Dawn raises money for her school in a jog-a-thon. She will get three dollars for every lap she completes. If it takes 5 laps to

julia-pushkina [17]

11 laps times 5 miles equals 55 laps. If she gets 3 dollars for every lap she will make $165 for her school.

3 0

3 years ago

Read 2 more answers

Consider function f and g <br> f(x)=x^2+7x<br> g(x)=3x-1<br><br> what is the value of (f•g)(x)

Nadya [2.5K]

9514 1404 393

Answer:

B. 9x² +15x -6

Step-by-step explanation:

The composition operator means that function f is applied to function g:

$(f\circ g)(x)=f(g(x))=f(3x-1)\\\\=(3x-1)^2+7(3x-1)\\\\=9x^2-6x+1+21x-7\\\\\boxed{(f\circ g)(x)=9x^2+15x-6}\qquad\textbf{matches B}$

6 0

3 years ago