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3 years ago

Adding, Subtracting, Multiplying, and Dividing Rationals and Solving Equations with Rationals in a real world scenario?

Mathematics

1 answer:

eduard3 years ago

4 0

Answer:

cnc machining can include a lot of maths in it

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20 pts awarded and brainliest chosen!!!!

g100num [7]

Answer:

D. x <= -3 or x >= 5

Step-by-step explanation:

3 | x-1 | > = 12

3(x - 1) >= 12

3x - 3 >= 12

3x >= 15

x >= 5

-3(x - 1) >= 12

-3x + 3 >= 12

-3x >= 9

x <= -3

Answer

x <= -3 or x >= 5

4 0

3 years ago

Lorinda can walk 1.8 miles in 30 minutes. Which proportion can be used to find how many miles she can walk in 45 minutes?

KonstantinChe [14]

Maybe this is the answer 1.8/30 = x/45

8 0

3 years ago

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YES I WILL MARK BRAINLIST !!! Algebra please help me with these Im timed!!!!!!!!

Phoenix [80]

Answer:

The answer is the last one: One runner in the study runs 31...

Step-by-step explanation:

31 is the input (x) and 81 is the output (y) and since there's 1 ordered pair per runner, it's going to be one runner, and the input is the miles ran.

5 0

3 years ago

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What is 2867 divided by 61 using box method

anyanavicka [17]

Answer:

Step-by-step explanation:

this is due to when 286 is divided by 61 it gets 40 and the remainder gets you 7 as a result it is 47

4 0

3 years ago

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Please help me with algebra part B and C. attachment below. Will mark as brainslist. 25 points.

miv72 [106K]

Answer:

C. $(-7x+60)(x+4)$

Step-by-step explanation:

Consider the expression $-7x^2+32x+240.$

First, note that

$a=-7\\ \\b=32\\ \\c=240$

Find the discriminant

$D=b^2-4ac=32^2-4\cdot (-7)\cdot 240=1,024+6,720=7,744\\ \\\sqrt{D}=\sqrt{7,744}=88$

Now,

$x_1=\dfrac{-b+\sqrt{D}}{2a}=\dfrac{-32+88}{2\cdot (-7)}=-4\\ \\x_2=\dfrac{-b-\sqrt{D}}{2a}=\dfrac{-32-88}{2\cdot (-7)}=\dfrac{60}{7}$

Write the factored form:

$-7x^2+32x+240=-7(x-(-4))\left(x-\dfrac{60}{7}\right)=(x+4)(-7x+60)$

8 0

3 years ago