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lozanna [386]
3 years ago
12

Can some one help me wit this

Mathematics
1 answer:
Irina18 [472]3 years ago
4 0
The answer is B, or y - 6 = 3/4 (x - 4). To put (-4, 6); m = 3/4 in point-slope form, you first start with the point-slope form equation which is y - k = m (x - h). The ordered pair that it wants you to put in is (-4, 6). To figure out where the ordered pair goes, you replace the variables (h, k) with (-4, 6). The h will always be the point on the
x-axis and the k will always will be the point on the y-axis. Putting these together, you now get y - 6 = m (x - 4). As the same in slope-intercept form, or y=mx+b form, the slope in this equation is m. In this equation, m = 3/4. So, the equation in point-slope form is y - 6 = 3/4 (x - 4).
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Factor the expression 3x + 9
Pavel [41]

Answer:

3(x+3)

Step-by-step explanation:

3x+9

Rewriting as

3*x +3*3

Factor out a 3

3(x+3)

3 0
4 years ago
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Multiply: (5x - 2)(4x^2 - 3x -2)
malfutka [58]

Option B.

5x−2)(4x^2−3x−2)

=(5x+−2)(4x^2+−3x+−2)

=(5x)(4x^2)+(5x)(−3x)+(5x)(−2)+(−2)(4x^2)+(−2)(−3x)+(−2)(−2)

=20x^3−15x^2−10x−8x^2+6x+4

=20x^3−23x^2−4x+4

4 0
2 years ago
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Yep ive been trying to solve this but i keep getting different answers, please can anyone explain?
julia-pushkina [17]

Answer:

0.45

Step-by-step explanation:

6 0
3 years ago
The expression can be simplified and written without negative exponents as...
Ksju [112]

\dfrac{(27y^{-2})^\frac{1}{3}}{y^{-\frac{2}{3}}}=(27)^\frac{1}{3}(y^{-2})^\frac{1}{3}:\dfrac{1}{y^\frac{2}{3}}=\sqrt[3]{27}y^{-2\cdot\frac{1}{3}}\cdot y^\frac{2}{3}\\\\=3y^{-\frac{2}{3}}\cdot y^\frac{2}{3}=3y^{-\frac{2}{3}+\frac{2}{3}}=3y^0=3\\\\\text{used:}\\\\(a\cdot b)^n=a^n\cdot b^n\\\\a^\frac{1}{n}=\sqrt[n]{a}\\\\a^{-n}=\dfrac{1}{a^n}\\\\(a^n)^m=a^{n\cdot m}\\\\a^n\cdot a^m=a^{n+m}\\\\a^0=1,\ a\neq0

6 0
4 years ago
1. Delia brushes her teeth 1/6 hour each day.
Roman55 [17]

Answer:

PART A: 28 hours, PART B: 16800 minutes

Step-by-step explanation:

Delia Brushes her teeth =  1/6 hour

PART A

Total Week= 1 week

Total number of  days in a week= 7 days

Total number of hours in a day= 24 hours

Total number of hours in a week= 24× 7 hours

Total number of hours in a  week=  168 hours

Number of hours that Delia brushes her teeth = \frac{1}{6} × 168 hours

Number of hours that Delia brushes her teeth = 28 hours

Hence, the correct answer is 28 hours

PART B

Total number of  days in a week= 7 days

Total number of hours in a  week=  168 hours

Total number of minutes in a  week=  168 × 60

Total number of hours in a  week=  100800 Minutes

Number of minutes that Delia brushes her teeth = \frac{1}{6}× 100800

Number of hours that Delia brushes her teeth = 16800 minutes

Hence, the correct answer is 16800 minutes

4 0
3 years ago
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