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just olya [345]
2 years ago
6

I need help will give you the brainliest

Mathematics
1 answer:
mote1985 [20]2 years ago
6 0

Answer:

2031.36 sq. in.

Step-by-step explanation:

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A science test, which is worth 100 points, consists of 24 questions. Each question is worth either 3 points or 5 points. If x is
mamaluj [8]

Answer: The test contains 10 three-point questions and 14 five-point questions.

Step-by-step explanation:

Let x represent the number of 3-point questions.

Let y represent the number of 5-point questions.

The maths test consists of 24 questions. This means that

x + y = 24

Each question is worth either 3 points or 5 and the test is worth 100 points. This means that

3x + 5y = 100 - - - - - - - - - - -1

Substituting x = 24 - y into equation 1, it becomes

3(24 - y) + 5y = 100

72 - 3y + 5y = 100

- 3y + 5y = 100 - 72

2y = 28

y = 28/2 = 14

Substituting y = 14 into x = 24 - y , it becomes

x = 24 - 14 = 10

5 0
3 years ago
The following formula relates three quantities Force (F) mass (m) and acceleration (a).
Agata [3.3K]

a. F = ma

F/a = ma/a

m = F/a

b. F = ma

-30 = -6a

a = 5

c. F = ma

30 = 10a

a = 3

4 0
3 years ago
Please answer the ones that have red dots on them my mom said those ones are wrong copy and paste then add your answer please:)
natita [175]

1.) 14

2.) 10

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5.) 80

6.) 8 : 7

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6 0
2 years ago
Witch equation represents a linear function
olya-2409 [2.1K]
Y=3x2+1
Hope this helped :)
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3 years ago
HELP ASAP question 5!!!
AnnyKZ [126]

Step-by-step explanation:

Total area of merged figure = area of vertical rectangle + area of horizontal rectangle.

\therefore \: 3x(2x - 7) + (3x + 4)x = 85 \\  \\  \therefore \: 6 {x}^{2}  - 21x+ 3 {x}^{2}  + 4x = 85 \\  \\ \therefore \: 6 {x}^{2}  + 3 {x}^{2} - 21x + 4x  - 85 = 0 \\  \\ \huge \red {\boxed {\therefore \: 9 {x}^{2}  - 17x  - 85 = 0}} \\ hence \: proved.

8 0
3 years ago
Read 2 more answers
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