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3 years ago

Simplify the expression -2b - 6 + 3b - 2

Mathematics

1 answer:

Tju [1.3M]3 years ago

5 0

-2b +3b = 1b -6+(-2) = 1b -8

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WILL GIVE BRAINLIEST

Montano1993 [528]

Step-by-step explanation:

Use the compound interest formula:

A = P( 1 + r/n)^nt

A is the amount at the end

P is the principal or original amount.

R is annual rate as a decimal (you have to convert)

N is the # of compounding periods in a year (quarterly means 4)

T is time in years

A = 500( 1 + 0.0475/4)^(4×20)

This would be $1285.64 when fully computed.

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3 years ago

If an atom has 5 protons, 7 neutrons and 5 electrons what is the mass number of the atom?

Mariana [72]

Answer:

7+5=12

Step-by-step explanation:

To calculate the mass number of an atom, you have to add the protons and the neutrons. We have 7 neutrons and 5 protons, so your mass number would be 12. Let me know if you have any further questions. :)

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2 years ago

Danny got a puppy for his birthday. After one year, the puppy gained 15 pounds and now weighs 52 pounds.

eduard

Answer:

Step-by-step explanation:

The puppy was originally 37 pounds before it gained 15.

HOPE THIS HELPS!!!!!!

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3 years ago

PLS HELP WILL GIVE BRAINIEST.

motikmotik

Answer:

y=1/3x

Step-by-step explanation:

the first line is 1 and the second line is 3

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2 years ago

The equation of a line is given by, 13x – y + 12 = 0. Find the slope and both the intercepts.

MArishka [77]

Answer:

The slope is 13.

The x intercept is $x=\frac{-12}{13}$ .

The y intercept is $y=12$ .

Step-by-step explanation:

1. Finding the slope.

This is a linear equation, because it's graph forms a line. In a linear equation, the slope is always the value that multiplies x. In this case, x is being multiplied by 13, therefore, the slope is 13.

2. Finding the x intercept.

The x intercept is found when the value of y is 0. Let's replace the value of y for 0 in the equation and solve the x:

$13x-y + 12 = 0\\\\13x-(0) + 12 = 0\\\\13x+12 = 0\\\\13x= -12\\\\x=\frac{-12}{13}$

The x intercept is $x=\frac{-12}{13}$ .

3. Finding the y intercept.

The y intercept is found when the value of x is 0. Let's replace the value of x for 0 in the equation and solve the y:

$13x-y + 12 = 0\\\\13(0)-y + 12 = 0\\\\-y + 12 = 0\\\\-y=-12\\\\y=12$

The y intercept is $y=12$ .

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2 years ago