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DENIUS [597]
3 years ago
14

The jurassic zoo charges $10 for each adult admission and $8 for each child. The total bill for the 139 people from a school tri

p was $1174.How many adults and how many children went to the zoo?
Mathematics
1 answer:
matrenka [14]3 years ago
5 0

Answer:

adults=31, children = 108

Step-by-step explanation:

a + c = 139 equation 1

10a + 8c = 1174 equation 2

a=139-c isolate a from equation 1

10(139-c) + 8c = 1174 substitute a value into equation 2

1390-10c + 8c = 1174

-2c = -216

c = 108

use value of c in either equation to find value of a

a + c = 139

a + 108 =139

a = 31

You might be interested in
1-cos^2 A / sec^2 A - tan^2 A
tiny-mole [99]
I hope this helps you



✔cos^2A+sin^2A=1


✔1-cos^2A=sin^2A

✔cos2A=cos^2A-sin^2A

✔sin2A=2.sinA.cosA


secA=1/cosA


tgA=sinA/cosA


sin^2A/1/cos^2A-sin^2A/cos^2A


sin^2A.cos^2A/cos2A

2.sin^2A.cos^2A/cos2A


sin2A.2.sin2A/cos2A


tg2A.2.sin2A


6 0
3 years ago
Help me with number one and number six before answering say which number you are answering please help me and thank you.
Ksenya-84 [330]
1) 3 times 15 is 45
6) because in order for it to even have a slope it has to be constant through out the whole thing.
5 0
4 years ago
Math help please!!!! i will mark brainliest
finlep [7]

Answer:

Step-by-step explanation:

A. 221 x 5 = 1,105

225 + 245 + 222 +230 = 922

1,105 - 922 = <u>183</u>

B. 225 is the median

C. 229 is Isaac's score for the sixth game

Hope this helps :)

7 0
3 years ago
Find the equation of the graphed line and select the best answer from the choices provided.​
klemol [59]

Answer:

D

Step-by-step explanation:

The y-intercept must be at -7, so that eliminates C.

Because of the direction of the line, the slope needs to be negative. This eliminates B.

The slope of the line is -7/6, so D is the correct answer.

6 0
3 years ago
Need help ON THESE TOO PLEASE WILL MARK BRAINLY
LenKa [72]

Answer:

1)

angle 2WZX = angle ZYX ( Since all angles and sides of a rhombus are equal)

ZYX = 2 x 29.5

59

2)

4x - 10 =90 (since all angles of a rhombus intersect at 90°)

x=90+10/4

x=100/4

x=25

hope this helps

5 0
3 years ago
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