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alisha [4.7K]
3 years ago
10

I need to know the answer for 19,20,21

Mathematics
1 answer:
pantera1 [17]3 years ago
7 0
19. $30,681.82
20. Find surface area for this one
21. Use geometry
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Mr. Harrison spent about $3600 on plane tickets for a family vacation. If each plane ticket cost $585, what is the largest numbe
Zepler [3.9K]

Answer:

6 tickets

Step-by-step explanation:

Amount spent by Mr Harrison on plane tickets = $3600

Cost of each ticket = $585

Thus, largest number of tickets purchased is;

n = 3600/585

n = 6.15

Approximating to the nearest whole number gives 6 tickets

3 0
2 years ago
Find the point-slope equation for the line that passes through the points (5, 35) and (-6, -31). Use the first point in your equ
AleksandrR [38]

Answer:

Maya, this is such a common question on here,  so i'm very interested in what's difficult about this problem for you.  Please comment about this. Below is the answer and how to find it.

Step-by-step explanation:

point P1 (5,35)  in the form (x1,y1)

point P2(-6,-31)  in the form (x2,y2)

slope = m

m = (y2-y1) / (x2-x1)

m = (-31-35) / (-6-5)

m = -66 / -11

they made it easy for you , huh

m = 6

use point / slope fomula,   y-y1 = m(x-x1)  and plug in one point,  either would work,  since i've already labeled it with point P1,  let's use that point

y-35 = 6(x-5)

y-35 = 6x-30

y = 6x - 30 + 35

y = 6x + 5

Maya, this really is a very common question on here,  I really am curious about what's tricky in the problem for you and many many others.  please let me know in comments section,  thanks  MMM

8 0
2 years ago
Read 2 more answers
Marvin was completing the square, and his work is shown below. Identify the line where he made his mistake.
kolbaska11 [484]
Im taking the test not ill let you know<span />
3 0
3 years ago
Read 2 more answers
4) In a clinical test with 2353 subjects, 1136 showed improvement from the treatment.
MissTica

Answer:

1217

Step-by-step explanation:

Given

Subjects = 2353

Improvement = 1136

Required

The number that didn't improve --- missing from the question.

Let the unimproved be represented as x.

So, we have:

x + Improvement = Subjects

Substitute known values

x + 1136 = 2353

Solve for x

x =- 1136 + 2353

x =1217

8 0
3 years ago
Help me solve this<br>4 — (x-2) (x+2)​
LekaFEV [45]

Using (x-a)(x+a)=x^2-a^2 to obtain

4-(x^2-4)=4-x^2+4=8-x^2

Hope this helps.

4 0
3 years ago
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