PLEASE HELP ASAP

Mathematics

1 answer:

Evgen [1.6K]3 years ago

6 0

Answer: I'm not sure how to interpret "If 4 (A) between 5/8 and 4/5." If the sentence was supposed to read:

"Is 4:

(A) between 5/8 and 4/5

(B) between 1 and 2

(D) between 1/2 and 1

(E) cannot be determined

Step-by-step explanation: If this is the correctly rewritten question, then the answer is NO to all the options. If I have misinterpreted the question, please clarify.

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SAT scores are distributed with a mean of 1,500 and a standard deviation of 300. You are interested in estimating the average SA

kotegsom [21]

Answer:

I should use at least 304 students

Step-by-step explanation:

Margin error (E) = t × sd/√n

E = 40

sd = 300

confidence level (C) = 98% = 0.98

significance level = 1 - C = 1 - 0.98 = 0.02 = 2%

t-value corresponding to 2% significance level and infinity degree of freedom is 2.326

n = (t×sd/E)^2 = (2.326×300/40)^2 = 17.445^2 = 304 (to the nearest integer)

3 0

3 years ago

Consider the following functions. f(x) = x^2- 4 g(x) = x-2 What is (f(x)) (g(x))?

rodikova [14]

Answer:

(f(x) g(x)) = $x^3-2x^2-4x+8 ;$ all real numbers

Step-by-step explanation:

(f(x) g(x)) = $(x^{2} -4)(x-2)$

= $x^3-2x^2-4x+8$ via FOIL

6 0

3 years ago

If t represent the number of tickets purchased for a baseball game, which scenario is modeled by the equation, 32.50t + 5 = 28.7

AnnyKZ [126]

Answer:

(B) The price for the lower level is $32.50 a ticket, plus $5.00 for a discounted parking pass. The middle-level tickets are $28.75 each, plus $20.00 for a parking pass.

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

If Ab = 54, find MC.

AnnyKZ [126]

Answer:

MC = 45

Step-by-step explanation:

Δ ABH and Δ MCH are similar and the ratios of corresponding sides are equal, that is

$\frac{AB}{MC}$ = $\frac{AH}{MH}$ , substitute values