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olchik [2.2K]
2 years ago
13

A theme park charges $45 for each adult ticket and $30 for each child ticket. A family purchased 10 tickets for $345. Which syst

em of equations could be used to find a, the number of adult tickets, and c, the number of children tickets that were purchased?
Question 2 options:

{a+c=34545a+30c=10

{a+c=34530a+45c=10

{a+c=1030a+45c=345

{a+c=1045a+30c=345
Mathematics
2 answers:
andrey2020 [161]2 years ago
5 0

Answer:

a or b I am not for sure.

Step-by-step explanation:

hdjssjdjgjfkwmsjdjdkdfktk

Murljashka [212]2 years ago
5 0
A I’m pretty sure, jssjdkkdkeje
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In a set of 25 aluminum castings, four castings are defective (D), and the remaining twenty-one are good (G). A quality control
lianna [129]

Answer:

The sample space for selecting the group to test contains <u>2,300</u> elementary events.

Step-by-step explanation:

There are a total of <em>N</em> = 25 aluminum castings.

Of these 25 aluminum castings, <em>n</em>₁ = 4 castings are defective (D) and <em>n</em>₂ = 21 are good (G).

It is provided that a quality control inspector randomly selects three of the twenty-five castings without replacement to test.

In mathematics, the procedure to select k items from n distinct items, without replacement, is known as combinations.

The formula to compute the combinations of k items from n is given by the formula:

{n\choose k}=\frac{n!}{k!(n-k)!}

Compute the number of samples that are possible as follows:

{25\choose 3}=\frac{25!}{3!\times (25-3)!}

      =\frac{25\times 24\times 23\times 22!}{3!\times 22!}\\\\=\frac{25\times 24\times 23}{3\times 2\times 1}\\\\=2300

The sample space for selecting the group to test contains <u>2,300</u> elementary events.

6 0
3 years ago
Help me, please!!!!!!!
navik [9.2K]

9514 1404 393

Answer:

  2

Step-by-step explanation:

Alex has 10 money units. Annie has 5 money units. The ratio of amounts is ...

  Alex : Annie = 10 : 5 = 2 : 1

Alex has 2 times as much money as Annie.

8 0
3 years ago
Find f(-2) f(x)=9x^2-5x+2
borishaifa [10]

Find f(-2) f(x)=9x^2-5x+2


f(-2) means replace x in the equation with -2:


f(-2)=9(-2)^2-5(-2)+2

= 9(4) +10 + 2

= 36 +10 + 2

= 48


f(-2) = 48



4 0
3 years ago
BRAINLIEST AND 20 POINTS
Korvikt [17]
Tan(60)=Opposite or L /20cm

*20. *20

Tan(60)*20=L


34.64101615=L

34.64 (to the nearest hundredth of a meter or cm)
5 0
3 years ago
Read 2 more answers
Solve for x.<br> I was sure the answer was 2?<br> Please show me the breakdown. THX
Murljashka [212]

Answer:

x = 8 and y = 10

Step-by-step explanation:

Since the figures are congruent:

Angle PQR = EFG

6y + x = 68

Segment QR = FG

2x - 4 = 12

Solving that:

2x - 4 = 12

2x = 16

x = 8

Replacing x in 6y + x =68

6y + 8 = 68

6y = 60

y = 10

7 0
3 years ago
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