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3 years ago

7

Jeremy and Karina are playing the "Integer Card Game". Jeremy drew three cards, -1, 8, and - 3.

2 answers:

Digiron [165]3 years ago

3 0

Answer:

3

Step-by-step explanation:

Semenov [28]3 years ago

3 0

Answer:

-1 + 8 + (-3) = 4

Step-by-step explanation:

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One number added to three times another number is 24. Five times the first number added to three times the other number is 36. F

Lera25 [3.4K]

Okay, so the equations would be:
x + 3y = 24
3y + 5x = 36

Imma use Substitution to solve this:
x = -3y + 24

3y + 5(-3y + 24) = 36
3y - 15y + 120 = 36
-12y + 120 = 36
-12y = -84
y = 7

x = -3(7) + 24
x = -21 + 24
x = 3

So the first number (x) would be 3 and the second number (y) would be 7.

5 0

3 years ago

In a test (+5) marks are given for every correct answer and (-2) marks are given for every incorrect answer . Roy answered all t

katovenus [111]

Answer:

20 questions

Step-by-step explanation:

Given

$Correct \Marks= +5$

$Incorrect\ Marks= -2$

$Score\ Obtained = 30$

$Number\ of\ correct\ answers = 10$

Required

Number of questions answered

First, we need to get the total correct marks obtained by Roy

This is calculated by multiplying the correct marks by number of correct answers

$Total = +5 * 10$

$Total = +50\ marks$

Subtract this from the total scores obtained; This gives the total incorrect answer obtained by Roy

$Incorrect = Scores\ Obtained - Total$

$Incorrect = 30 - (+50)$

Open bracket

$Incorrect = 30 - 50$

$Incorrect = -20$

Divide this by -2 to get the number of incorrect answers

$Incorrect\ Answers = \frac{-20}{-2}$

$Incorrect\ Answers = 10$

Add this to the number of correct answers to give the total number of question answered

$Total = Correct\ Answers + Incorrect\ Answers$

$Total = 10 + 10$

$Total = 20$

<em>Hence, Roy answered a total of 20 questions</em>

3 0

3 years ago

Use the net to determine the total surface area

Brut [27]

Answer:

I need to see the net

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Use the distance formula to slove how far the points are on the a coordinate plane. Points are (7,5)(3,2)

maksim [4K]

Answer:

distance is 5 units

Step-by-step explanation:

plug in values

4 0

3 years ago

All my question are about math and this test determines my high school classes help if you can please

Mashcka [7]

Answer:

y = x+2

Step-by-step explanation:

When x = 0, y =2

So, y = 0 + m

2 = 0 + m

2 = m

When x = 1, y =3

y = x + m

3 = x + 2

-2 -2

1 = x

3 0

3 years ago