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3 years ago

Last someone someone helppp

Mathematics

2 answers:

exis [7]3 years ago

6 0

Answer:

Step-by-step explanation:

c=2m+d

c-d=2m

(c-d)/2=m

option 3

ollegr [7]3 years ago

4 0

Answer:

your answer should be number 1

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The difference between thirty and five

Rudiy27

The difference bettween 30 and 5 would be 25

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3 years ago

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Solve the system of equations: y= x^2 + 2x - 3 and y=3x+ 3.

Semenov [28]

Answer:

(-2, -3)

(3, 12)

Step-by-step explanation:

To solve this, we're gonna get rid of the y's with substitution

x² + 2x - 3 = 3x + 3

Let's make this equation equal to zero

Subtract 3 from both sides

x² + 2x - 3 = 3x + 3

- 3 - 3

x² + 2x - 6 = 3x

Subtract 3x from both sides

x² + 2x - 6 = 3x

- 3x - 3x

x² - x - 6 = 0

Factor the equation

(x - 3)(x + 2) = 0

This means x can be -2 or 3

Let's solve it with -2 first, plug the new x in y = 3x + 3

y = 3(-2) + 3

y = -6 + 3 = -3

Do the same for x = 3

y = 3(3) + 3

y = 9 + 3 = 12

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2 years ago

2x + 3 = 5, then, x=

Pavlova-9 [17]

Answer:

x= 1

Step-by-step explanation:

2x1=2+3=5

7 0

3 years ago

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I need help PLEASE help mee

EastWind [94]

Answer:

Step-by-step explanation:

In order to convert 0.0004578, which is in decimal, to scientific notation, all we need to do in this case is to move our decimal point to the right till we arrive at the first number that is not a zero, and then eliminate all the zero.

In this case, we will have to move the decimal point 4 spaces to our right, which would mean our exponent would be negative. The number of decimal spaces we moved to our right would be the value of our exponent, which is -4 in this case.

Thus, we have:

$4.578 * 10^{-4}$

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4 years ago

If it takes 5 workers 4 hours to build a 10 foot wall, and the number of hours is directly proportional to the number of walls t

pychu [463]

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3 years ago