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frozen [14]
3 years ago
5

Erika collects sports cards. The graph shows how many sports

Mathematics
1 answer:
Lilit [14]3 years ago
3 0

Answer:

A

if you match the ordered pairs with the info on the table it tells you the answer

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Help me guys.... running out of points here this is a test grade....gonna die
Murrr4er [49]

Answer:

11

Step-by-step explanation:

The sum of the remote interior angles = the exterior angle

66 + 7x + 7 = 12x + 18

7x + 73 = 12x + 18

55 = 5x

x = 11

5 0
3 years ago
If a couple went out to dinner with there four children and the kids meals cost $11.99 each and the adults meal cost 15.99 each
Basile [38]
2×$15.99=31.98
+ 4×$11.99=47.96
---------------
$79.94

:. $79.94 is the cost.
5 0
2 years ago
Triangle PQR has angles in the ratio of 2:3:5.
vazorg [7]

Answer:(4) right angle

Step-by-step explanation:

you need to get 180 right solve it from there

3 0
3 years ago
Five students visiting the student health center for a free dental examination during National Dental Hygiene Month were asked h
kirza4 [7]

Answer:

95% confidence interval for the mean number of months is between a lower limit of 6.67 months and an upper limit of 25.73 months.

Step-by-step explanation:

Confidence interval is given as mean +/- margin of error (E)

Data: 5, 15, 12, 22, 27

mean = (5+15+12+22+27)/5 = 81/5 = 16.2 months

sd = sqrt[((5-16.2)^2 + (15-16.2)^2 + (12-16.2)^2 + (22-16.2)^2 + (27-16.2)^2) ÷ 5] = sqrt(58.96) = 7.68 months

n = 5

degree of freedom = n-1 = 5-1 = 4

confidence level (C) = 95% = 0.95

significance level = 1 - C = 1 - 0.95 = 0.05 = 5%

critical value (t) corresponding to 4 degrees of freedom and 5% significance level is 2.776

E = t×sd/√n = 2.776×7.68/√5 = 9.53 months

Lower limit of mean = mean - E = 16.2 - 9.53 = 6.67 months

Upper limit of mean = mean + E = 16.2 + 9.53 = 25.73 months

95% confidence interval is (6.67, 25.73)

3 0
2 years ago
100 POINTS!!! ALGEBRA 1 PLEASE HELP!!! BRAINLIEST IF CORRECT
Ainat [17]

Answer:

<h2>1. (-6, 0) and (-1, 0)</h2><h2>2. not exist</h2><h2>3. (5, 0)</h2>

Step-by-step explanation:

The zeros of a quadratic function are x-intercepts of parabola.

Graph #1:

x = -6 and x = -1

Graph #2:

not exist

Graph #3:

x = 5

5 0
3 years ago
Read 2 more answers
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