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hichkok12 [17]
3 years ago
14

ASAP PLZTo estimate 103% of 63 rich rounded 103% down to 100% 63 down to 60 and multiplied 60 by 1 to get 60 which of these stat

ements are true
A:Rich’s estimate is reasonable because it should be less than 63
B:Rich’s estimate is unreasonable because it should be greater than 63
C:Rich’s estimate is unreasonable because it should be less than 63
D:Rich’s estimate is reasonable because it should be greater than 63
Mathematics
1 answer:
sasho [114]3 years ago
5 0

Answer: it’s d

Step-by-step explanation:

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Expand quadratic equation (2x-3)(x+4) = 0​
OleMash [197]

Answer:

Step-by-step explanation:

Simplifying

(2x + -3)(x + -4) = 0

Reorder the terms:

(-3 + 2x)(x + -4) = 0

Reorder the terms:

(-3 + 2x)(-4 + x) = 0

Multiply (-3 + 2x) * (-4 + x)

(-3(-4 + x) + 2x * (-4 + x)) = 0

((-4 * -3 + x * -3) + 2x * (-4 + x)) = 0

((12 + -3x) + 2x * (-4 + x)) = 0

(12 + -3x + (-4 * 2x + x * 2x)) = 0

(12 + -3x + (-8x + 2x2)) = 0

Combine like terms: -3x + -8x = -11x

(12 + -11x + 2x2) = 0

Solving

12 + -11x + 2x2 = 0

Solving for variable 'x'.

Factor a trinomial.

(3 + -2x)(4 + -1x) = 0

Subproblem 1

Set the factor '(3 + -2x)' equal to zero and attempt to solve:

Simplifying

3 + -2x = 0

Solving

3 + -2x = 0

Move all terms containing x to the left, all other terms to the right.

Add '-3' to each side of the equation.

3 + -3 + -2x = 0 + -3

Combine like terms: 3 + -3 = 0

0 + -2x = 0 + -3

-2x = 0 + -3

Combine like terms: 0 + -3 = -3

-2x = -3

Divide each side by '-2'.

x = 1.5

Simplifying

x = 1.5

Subproblem 2

Set the factor '(4 + -1x)' equal to zero and attempt to solve:

Simplifying

4 + -1x = 0

Solving

4 + -1x = 0

Move all terms containing x to the left, all other terms to the right.

Add '-4' to each side of the equation.

4 + -4 + -1x = 0 + -4

Combine like terms: 4 + -4 = 0

0 + -1x = 0 + -4

-1x = 0 + -4

Combine like terms: 0 + -4 = -4

-1x = -4

Divide each side by '-1'.

x = 4

Simplifying

x = 4

Solution

x = {1.5, 4}

6 0
2 years ago
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Step-by-step explanation:

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Wait, is this a question?

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9966 [12]

Answer:

10. y=\frac{3}{5}x+7.2

11A. m=-\frac{3}{5}

11B. m=\frac{5}{3}

Step-by-step explanation:

10. Let's first write the slope-intercept form down and fill in the information we got (which is not much).

y=mx+b\\y=\frac{3}{5}x+b

Now we just need to find the b; the y intercept.

To do that, we plug in the point given (-2,6).

6=\frac{3}{5}(-2)+b\\6=-\frac{6}{5}+b\\6+\frac{6}{5}=b\\b=7.2

y=\frac{3}{5}x+7.2

------------------------------------------------------

A parallel line always has the same slope as its pair

11A. m=-\frac{3}{5}

A perpendicular line has it's slope same as it's pair, <em>but</em> it is multiplied by -1 and the numerator and denominator are switched around.

11B. m=\frac{5}{3}

7 0
3 years ago
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