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klemol [59]
3 years ago
7

Your teacher is giving a test that is made up of 3 point questions and5 point questions the test is worth 100 points and has 28

questions how many 3 points questions are there ?
Mathematics
1 answer:
Troyanec [42]3 years ago
7 0

Answer:

I am thinking 8 amigo, i could be wrong, so please look it up, or try to think about how to do it

Step-by-step explanation:

I hope you have a blessed day!

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Solve the system of equations using substitution -3x + 2y = 12 x = 2y - 8
SCORPION-xisa [38]

Answer:

(-2, 3)

Step-by-step explanation:

Given the system of equations:

-3x + 2y = 12

x = 2y - 8

You can 'substitute' the expression '2y - 8' for the value of 'x' in the first equation and solve for 'y':

-3(2y - 8) + 2y = 12

Distribute: -6y + 24 + 2y = 12

Combine like terms: -4y + 24 = 12

Subtract 24 from both sides: -4y + 24 - 24 = 12 - 24 or -4y = -12

Divide both sides by -4: -4y/-4 = -12/-4  or y = 3

Use y = 3 to solve for 'x':

x = 2(3) - 8 or 6 - 8

x = -2

(-2, 3)

5 0
3 years ago
Eight less than the product of seven x
lisabon 2012 [21]

Answer:

2x - 8

Step-by-step explanation:

Product of two and a number x

⇒ 2 multiply by x

⇒ 2x

Eight less than 2x

⇒ Take away 8 from 2x

⇒ 2x - 8

8 0
3 years ago
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Which formula can you use to find the area of a circle​
nata0808 [166]

Answer:

A = pi r^2

Step-by-step explanation:

The formula for area of a circle is given by

A = pi r^2

8 0
3 years ago
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Enter the decimal equivalent of 9/12
AnnyKZ [126]

Answer:

.75, I hope that this has helped

5 0
3 years ago
Use completing the square to solve the equation x2 - 10x = -8.
Alenkasestr [34]
A. X^2-10x. =-8
To complete the square you get half of -10 and then square that number half of -10 is -5 and -5 times -5 equals positive 25 that would you add to each side

x^2-10x+25=-8+25
17
6 0
3 years ago
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