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WINSTONCH [101]
3 years ago
7

(I’M MARKING BRAINLIEST) Plzzz help I really need all the help I can get!

Mathematics
1 answer:
Nutka1998 [239]3 years ago
5 0

Answer:

the one on the left

Step-by-step explanation:

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a circus charges $2.50 for kids tickets and $6 for adult tickets last week and twice as many kids attended the circus than adult
aliina [53]
Let
x-----------> the number of kids
y----------> the number of adults

we know that
2.5x+6y=$7150---------> equation 1
x=2y-------------> equation 2
substitute 2 in 1
2.5*[2y]+6y=7150-----> 5y+6y=7150----> 11y=7150-----> y=650
x=2y----> x=2*650----> 1300

the answer is
the number of kids is 1300
5 0
3 years ago
A regular triangular pyramid with a slant height of 9 m has a volume equal to 50 m^3. find the lateral area of the pyramid
Cerrena [4.2K]

we are given a regular triangular pyramid with a slant height of 9 m and volume of 50 m3. We can get the altitude of the pyramid by sin 60 = h / 9; h is equal to 7.7942 m. Volume is equal to 1/3 h * B, B is equal to 19.2451 m2. perimeter of the base is 3*9 m equal to 27 meters. The lateral area has  a formula of 1/2 pl, substituting, lateral area is equal to 121.5 m2. 
8 0
4 years ago
Astrid wants to buy pumpkins and watermelons. She wants to buy more than 10 fruits, and she has a
Stolb23 [73]

Answer:

Buying 7 pumpkins and 3 watermelons, Astrid doesn't meet her two expectations.

Step-by-step explanation:

Let

P ----> the number of pumpkins and watermelons she can buy

W ----> the number of  watermelons she can buy

we know that

P+W > 10 ----> inequality A

5.5P+3.5W < 117 ---> inequality B

<em>Note</em> Both inequalities are given in the problem

If Astrid buy 7 pumpkins and 3 watermelons

then

we have the ordered pair (7,3)

Remember that

If a ordered pair is a solution of the system of inequalities, then the ordered pair must satisfy both inequalities

For P=7, W=3

<u><em>Verify Inequality A</em></u>

P+W > 10

substitute the value of P and the value of W

7+3 > 10

10 > 10 ----> is not true

so

The ordered pair not satisfy the inequality A

<u><em>Verify Inequality B</em></u>

5.5P+3.5W < 117

substitute the value of P and the value of W

5.5(7)+3.5(3) < 117

49 < 117 ----> is true

so

The ordered satisfy the inequality B

therefore

Buying 7 pumpkins and 3 watermelons, Astrid doesn't meet her two expectations.

8 0
3 years ago
If I invest 5,000 at a rate 8.5% for 13 days? How much interest will I earn on my investment if the interest is compounded daily
bogdanovich [222]

Using the formula A = P(1 + r/n)^nt

P = 5,000

r = 8.5% or 0.085

n = 365

t = 13/365 (13 days out of a year)

A = 5,000 (1 + 0.085/365)^365*13/365

A = 5015.16

You will earn $15.16


4 0
3 years ago
Bobcat Park is a rectangular park with an area of 5 2/5 square miles.Its width is 1 11/25 miles.How long is the park?
ELEN [110]
I believe it is 3.75 miles. 5 2/5=5.4 and 1 11/25=1.44. 5.4/1.44=3.75.
4 0
3 years ago
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