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Schach [20]
3 years ago
6

Find the slope of the line that passes through (1, -19) and (-2, -7)

Mathematics
1 answer:
Korolek [52]3 years ago
4 0

Answer:

y = -4x-15

Step-by-step explanation:

y = ax+b

-19=a+b

-7=-2a+b

==> a = -4

b = -15

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In ΔXYZ, ∠X=82° and ∠Y=84°. ∠XWZ=90° and XY=97. Find the length of XW to the nearest integer.
ivanzaharov [21]

Check the picture below to the left, let's use those sides with the law of sines

\textit{Law of sines} \\\\ \cfrac{sin(\measuredangle A)}{a}=\cfrac{sin(\measuredangle B)}{b}=\cfrac{sin(\measuredangle C)}{c} \\\\[-0.35em] ~\dotfill\\\\ \cfrac{sin(14^o)}{97}=\cfrac{sin(84^o)}{XZ}\implies XZ = \cfrac{97\cdot sin(84^o)}{sin(14^o)}\implies XZ \approx 398.76 \\\\\\ \stackrel{\textit{now using SOH CAH TOA}}{cos(82^o) = \cfrac{XW}{XZ}}\implies XZcos(82^o)=XW \\\\\\ 398.76cos(82^o)\approx XW\implies 55.497\approx XW\implies \stackrel{\textit{rounded up}}{55=XW}

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3 years ago
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4 0
3 years ago
What is the percent of increase from 50 to 65
morpeh [17]
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4 0
3 years ago
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You have a box with 4 green marbles, 7 blue marbles, and 2 red marbles. What is the probability of picking a green marble?
Rudiy27

Answer:

Step-by-step explanation:

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5 0
3 years ago
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What is the value of the expression, written in standard form.(6.6×10^-2)(3.3×10^-4)
quester [9]

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4 years ago
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