MATHEMATICS COLLEGE

Evaluate the expression when a=-5 and y=7.

Answers

Answer 1

Answer:

Step by step explanation:

_______________________________

Step 1:

$- 4a + y$

Write the equation

_______________________________

Step 2:

$= - 4 * ( - 5) + 7$

Insert the values of a ie -5 and y ie 7

_______________________________

Step 3:

$= + 20 + 7$

Multiply- 4 with -5 to get 20

_______________________________

Step 4:

$= 27$

add 20 with 7 to get 27

_______________________________

⚡Final answer: 27

hope it helped you:)

Answer 2

Answer:

Answer:

Step-by-step explanation:

We are given that a = -5 and y = 7 and we are asked to evaluate the expression -4a + y.

To evaluate the expression, we would plug -5 for a and 7 for y into the expression.

-4a + y = -4(-5) + 7 = 20 + 7 = 27

So -4a + y = 27.

I hope you find my answer and explanation to be helpful. Happy studying. :)

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Consider the daily market for hot dogs in a small city. Suppose that this market is in long-run competitive equilibrium with many hot dog stands in the city, each one selling the same kind of hot dogs. Therefore, each vendor is a price taker and possesses no market power.

Answers

The graph show\ing the demand (D) and supply (S = MC) curves in the market for hot dogs indicate: Competitive market.

Competitive market

In a market were their is competition, when demand and supply curves intersect this indicate market equilibrium.

Based on the graph the market equilibrium price will be $1.50 per hot dog while on the other hand the market equilibrium quantity will be 250 hot dogs which is the point were demand and supply intersect.

Inconclusion the market for hot dogs indicate: Competitive market.

Learn more about competitve market here:brainly.com/question/25717627

Answer:IF each vendor has his own price or (ppower) so far every single vendor will have his own price.

Step-by-step explanation:

What is the base 10 representation of 11102?

Answers

Answer:

Step-by-step explanation:

The base two number one one one zero is equal to one times eight, plus one times four, plus one times two, plus zero times one, which simplifies to fourteen.

Answer:

1.1102 * 10^4

Step-by-step explanation:

11102

= 1.1102 * 10^4

Solve 2cos^2x+3sinx=0

Answers

Answer:

$x = {\sin^( - 1) 2} \: \: or \: \: x = (7\pi)/(6), \: \: (5\pi)/(3)$

Step-by-step explanation:

$2 { \cos}^(2) x + 3 \sin x = 0 \n 2 {(1 - \sin}^(2) x) + 3 \sin x = 0 \n 2 - 2 \sin^(2) x+ 3 \sin x = 0 \n 2 \sin^(2) x - 3 \sin x - 2 = 0 \n 2 \sin^(2) x - 4\sin x + \sin x- 2 = 0 \n 2\sin x(\sin x - 2) + 1(\sin x - 2) = 0 \n (\sin x - 2)(2\sin x + 1) = 0 \n (\sin x - 2) = 0 \: or \: (2\sin x + 1) = 0 \n \sin x = 2 \: or \: 2\sin x = - 1 \n x = {\sin^( - 1) 2} \: \: or \: \: \sin x = - (1)/(2) \n x = {\sin^( - 1) 2} \: \: or \: \: x = (7\pi)/(6), \: \: (5\pi)/(3)$

6. The length of the minor arc AB of a circle, centre O, is 2π cm and the length of the major arc is 22π cm. Find: a) the radius of the circle
b) the acute angle AOB.

Answers

Answer:

a) 24 [cm]; b) 30°.

Step-by-step explanation:

a) the length of full the circle is: min_arc(AB)+maj_arc(AB)=π(22+2)=24π [cm]. Then the radius is: r=L/π; ⇒ r=24π/π=24 [cm];

b) if the full circle is 360° (L=24π), then m(∠AOB):2=360°:24 and the required measure of the acute angle AOB is:

m(∠AOB)=360*(1/12)=30°.

1. Le Point Bookbinderypays a dividend of $1.25
per share every three
months. How many
months would it take to
earn dividends amounting
to $8.75 per share?

Answers

Answer:

7 months dawg because take 1.25 x 4 and that's 5.00 + 1.25=6.25+1.25=7.50+1.25=8.75

Researchers wanted to determine if having a refrigerator in the bedroom is associated with obesity. The researchers administered a questionnaire to 353 twelve-year-old adolescents. After analyzing the results, the researchers determined that the body mass index of the adolescents who had a refrigerator in their bedroom was significantly higher than that of the adolescents who did not have a refrigerator in their bedroom. Complete parts (a) through (e) below. Why is this an observational study?

(A) This is an observational study because the researchers observe the behavior of the individuals in the study without trying to influence an explanatory variable of the study.
(B) This is an observational study because the researchers try to influence the outcome of the study.
(C) It is not an observational study

Answers

Answer:

Step-by-step explanation:

Final answer:

The question's study is an observational study because researchers observed the behavior of individuals without influencing any aspect of the study, such as the presence of a refrigerator or the adolescent's BMI.

Explanation:

This study is indeed considered an observational study. The answer is (A) This is an observational study because the researchers observe the behavior of the individuals in the study without trying to influence an explanatory variable of the study. In the study described, researchers merely observed and recorded the behavior (having a refrigerator in the bedroom) and the outcome (body mass index or BMI). There was no attempt by the researchers to manipulate or control either the presence of the refrigerator or the adolescent's BMI, which is characteristic of an observational study.

Learn more about the observational study here:

brainly.com/question/33317407

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