4 years ago

3-5 help please……………

Mathematics

1 answer:

AnnyKZ [126]4 years ago

4 0

3. x is less than or equal to 60
4. x is greater than or equal to 16
5. x is greater than or equal to 48 inches

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Sarah got a 80% on her pre algebra final exam. if there were 75 questions total how many did sarah get correc? How many did she

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She got 60 correct and 15 wrong. She got 11.25% wrong

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3 years ago

Read 2 more answers

The difference of two numbers is more than 12,and one of the numbers is 3

klio [65]

X+y = 12
x-y = 3
x = 3+y

Substitute it in 1st equation,
3+y+y=12
2y = 9
y = 4.5

Substitute it in 1st eq.,
x = 12-4.5 = 7.5

So, the two numbers are 7.5 & 4.5

Hope this helps!

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3 years ago

Long before iPhones that hold thousands of songs and play

Flauer [41]

Answer:

Do you mean an MP3 player?

Step-by-step explanation:

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3 years ago

Which classification describes the following syastem of equations? x=5 y=6 -x - y +z = 0

Papessa [141]

Answer:

Is a consistent independent system

Step-by-step explanation:

we know that

If a system has at least one solution, it is said to be consistent .

If a consistent system has exactly one solution, it is independent .

If a consistent system has an infinite number of solutions, it is dependent

If a system not have solution, it is said to be inconsistent

we have

$x=5$ ----> equation A

$y=6$ ----> equation B

$-x-y+z=0$ ----> equation C

substitute equation A and equation B in equation C

$-5-6+z=0$

Solve for z

$z=11$

The solution is the point (5,6,11)

The system has only one solution

therefore

Is a consistent independent system

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4 years ago

Ab + 2b²<br> where<br> a = 7 b=4

Veronika [31]

Answer:

Step-by-step explanation:

$a=7\\b=4\\ab+2b^2\\(7)*(4)+2*(4)^2\\28+2*16\\28+32\\=\fbox{60}$

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2 years ago