Mathematics, 20.12.2019 18:31, jabezslade22

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1. store a sells 11 bagels for $9.57. store b sells 4 bagels for $3.52. how do the unit rates compare?
a. the bagels at store a are $0.01 more expensive then the bagels at store b.
b. the bagels at store a are $0.01 less expensive then the bagels at store b.
c. the bagels at store a are $0.03 more expensive then the bagels at store b.
d. the bagels at store a are $0.03 less expensive then the bagels at store b

2. which is the best buy?
a. $10.88 for 7 cans of tuna
b. $11.55 for 6 cans of tuna
c. $17.25 9 cans of tuna
d. $15.31 8 cans of tuna

3. population density is the number of people per unit of area. what is the population density of a state that has 626,011 people in 9,620 square miles? round to the nearest whole number.
a. 650 people per square mile
b. 65 people per square mile
c. 651 people per square mile
d. 6,507 people per square mile

4. which ratios can form a proportion?
a. 20/25, 14,21
b. 10/23, 18/7
c. 5/45, 4/36
d. 5/4, 4/5
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answered: ZoomZoom44

1. The correct answer is option B.

2. The correct answer is option A.

3. The correct answer is option B.

4. The correct answer is option C.

Step-by-step explanation:

Store A sells 11 bagels for $9.57.

Price of 1 bagel = $\frac{\$9.57}{11}=\$0.87$

Store B sells 4 bagels for $3.52.

Price of 1 bagel at store B= $\frac{\$3.52}{4}=\$0.88$

Price of bagel at store B > Price of bagel at store A

$0.88 > $0.87

Difference in the price of bagel = $0.88 - $0.87= $0.01

The correct answer is option B.

i) $10.88 for 7 cans of tuna

Price of single can = $\frac{\$10.88}{7}=\$1.55$

ii) $11.55 for 6 cans of tuna

Price of single can = $\frac{\$11.55}{6}=\$1.92$

iii) $17.25 9 cans of tuna

Price of single can = $\frac{\$17.25}{9}=\$1.91$

iv) $15.31 8 cans of tuna

Price of single can = $\frac{\$15.31}{8}=\$1.91$

The best buy is ,$10.88 for 7 cans of tuna because 1 can of tune cost only$1.55.

Population in the state = 626,011

Area occupied by the population = 9,620 square miles

Population density of the state:

$\frac{626,011}{9,620 mile^2}=65.07 people/mile^2\approx 65 people/mile^2$

A. 20/25, 14/21

$\frac{20}{25}=\frac{14}{21}$

$\frac{4}{5}\neq \frac{2}{3}$ (not a proportion)

B. 10/23, 18/7

$\frac{10}{23}=\frac{18}{7}$

$\frac{10}{23}\neq \frac{18}{7}$ (not a proportion)

C. 5/45, 4/36

$\frac{5}{45}=\frac{4}{36}$

$\frac{1}{9}=\frac{1}{9}$ ( proportion)

D. 5/4, 4/5

$\frac{5}{4}=\frac{4}{5}$

$\frac{5}{4}\neq \frac{4}{5}$ (not a proportion)

answered: Guest

answer: asdfghjkl,mnbv

step-by-step explanation:

answered: Guest

answer: a video game has three difficulty levels: easy, medium, and expert. the game's scoring works in such a way that a player has to score a fixed number of points to advance to the next level, and then the scoring starts over. the total score needed to clear all three difficulty levels is 7,500. two times the number of points needed to clear the easy level is 500 more than the number of points needed to clear the medium level. twice the number of points needed to clear the medium difficulty level is 1,500 more than the number of points needed to clear the expert level. if x, y, and z represent the easy, medium, and expert levels, respectively, and a is the coefficient matrix of the system of equations modeling this situation, identify the inverse matrix, a-1, and the solution matrix, x, of the system of equations.

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