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PtichkaEL [24]
3 years ago
15

0.051x40(0.5+0.01)x40 using distributive property

Mathematics
1 answer:
krek1111 [17]3 years ago
4 0

Answer:

41.616

Step-by-step explanation:

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Show Work to factor the binomials.
Sophie [7]

(14)\\\\x^2 + 14x +45\\\\=x^2 +5x +9x +45\\\\=x(x+5) +9(x+5)\\\\=(x+9)(x+5)\\\\(15)\\\\x^2 +18x +45\\\\=x^2 +15x +3x +45\\\\= x(x+15) +3(x+15)\\\\=(x+3)(x+15)\\\\\\(16)\\\\x^2+46x+45\\\\=x^2 +45x +x +45\\\\=x(x+45) +(x+45)\\\\=(x+45)(x+1)

7 0
2 years ago
How do you know if a function is quadratic??
Anestetic [448]

Answer:

Usually it's in standard form: ax²+bx+c

or vertex form: y=a(x-h)²+k

If you put the graph into a graphing calculator it's going to look like a hill/depression.

Step-by-step explanation:

Standard form ex: 3x²+2x+1

Vertex form ex: y=4(x-1)²-2

7 0
3 years ago
Read 2 more answers
What is the slope of a line perpendicular to the line whose equation is 5x - y = -7.
BARSIC [14]

keeping in mind that perpendicular lines have negative reciprocal slopes, let's check for the slope of the equation above

5x-y=-7\implies 5x-y+7=0 \\\\\\ \stackrel{\stackrel{m}{\downarrow }}{5} x+7=y\qquad \impliedby \begin{array}{|c|ll} \cline{1-1} slope-intercept~form\\ \cline{1-1} \\ y=\underset{y-intercept}{\stackrel{slope\qquad }{\stackrel{\downarrow }{m}x+\underset{\uparrow }{b}}} \\\\ \cline{1-1} \end{array}

so a line perpendicular to that one above will have a slope of

\stackrel{~\hspace{5em}\textit{perpendicular lines have \underline{negative reciprocal} slopes}~\hspace{5em}} {\stackrel{slope}{5\implies \cfrac{5}{1}} ~\hfill \stackrel{reciprocal}{\cfrac{1}{5}} ~\hfill \stackrel{negative~reciprocal}{-\cfrac{1}{5}}}

3 0
2 years ago
Can someone please explain to me why -4² = -16?
oksano4ka [1.4K]

Answer:

-4 x -4 = -16

4 x 4 = 16

^2 or to the power of 2 basely means 4 times itself, because 2.

5 0
2 years ago
The diameter of a circle measures 32 yd. What is the circumference of the circle?
Alexxandr [17]

Answer:

100.48yds

Step-by-step explanation:

C= Circumference

π=3.14

R=radius

C=2πr

C=2(3.14)*16

C=6.28*16

C=100.48yds

4 0
3 years ago
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