2 years ago

2.

Mathematics

1 answer:

Sidana [21]2 years ago

5 0

It’s C since it is open and x is less than 2. We can plug in any number on the number line to see if this makes sense.

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Help pleaseeee <br><br> 3.3 - 5.7n – 3n +8= ??

nasty-shy [4]

Answer:

11.3 - 8.7n

Step-by-step explanation:

Its almost basically combining like terms

You subtract - 5.7n - 3n to get -8.7n, then you add 3.3 + 8 to get 11.3 and you finally put it an equation 11.3 - 8.7n

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2 years ago

Which expression is equivalent to 15x + 3?

adelina 88 [10]

Answer:

the answer is 15x+3=3(5x+1)

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3 years ago

Given the equation 5 + x - 14 = x - 7.

Yanka [14]

Answer:

x=0

Step-by-step explanation:

combine like terms on both sides of the equal sign

-9+x= x-7

move similar terms to the same side

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divide both sides by x

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2 years ago

Geometry question for homework.

mars1129 [50]

So remember that the distance formula is $\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$ .

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Distance between (4,-5) and (4,-2) is 3 units.

$\sqrt{(1-(-1))^2+(1-4)^2}\\ \sqrt{2^2+(-3)^2}\\ \sqrt{4+9}\\ \sqrt{13}$

Distance between (1,1) and (-1,4) is √13 (or 3.61 rounded to the hundreths) units.

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3 years ago

The half–life of rubidium–89 is 15 minutes. If the initial mass of the isotope is 250 grams, how many grams will be left after 1

irina1246 [14]

M(100) = 2.46 grams .

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3 years ago

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