3 years ago

Plz helpp (yes i have a bunch of these questions lol)

Mathematics

1 answer:

agasfer [191]3 years ago

3 0

Card K is reflected over the y-axis; while card N is reflected over the x-axis

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I am a solid figure with two congruent polygons that are bases connected with lateral faces that are rectangles

Andrews [41]

We have lateral faces that are rectangles and 2 congruent polygons that are bases. This must be 3-dimensional solid figure - quadrilateral prism. If those 2 bases are squares then it is a rectangular prism, but the bases also can be 2 rhombuses. Answer: Quadrilateral prism.

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3 years ago

A ball is thrown into the air. The height in feet of the ball can be modeled by the equation h = -16t2 + 20t + 6 where t is the

makkiz [27]

$f(t)=h=-16t^2+20t+6

$

a=-16, b=20, c =6

Δ= $b^2-4ac=20^2-4*(-16)*6=400+384=784$

$\sqrt{Δ}=\sqrt{784}=28$

max:

$p=-\frac{b}{2a}=-\frac{20}{-32}=\frac{20}{32}=\frac{5}{8}$

max heigh: $h=-16(\frac{5}{8})^2+20*\frac{5}{8}+6=-16\frac{25}{64}+\frac{100}{8}+6$

$h=-\frac{25}{4}+\frac{50}{4}+6=\frac{-25+50+24}{4}=\frac{49}{4}$

$h=\frac{49}{4}$ at $t=\frac{5}{8}s$

will fall down at t:

$t=\frac{-20-28}{-32}=\frac{-48}{-32}=\frac{3}{2}=1.5$

$t=1.5s$

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3 years ago

Why are angles opposite each other when two lines cross called vertical angles?

Nezavi [6.7K]

They are called vertical angles because the definition of vertical is: in a direction, or having an alignment, such that the top is directly above the bottom. The "angles opposite each other when two lines cross" match the definition.

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3 years ago

What is the equation of the line through (7, -1) with slope -3?

Slav-nsk [51]

Point slope is y-y1=m(x-x1) where m is slope and x1 and y1 are the given x and y values.

y-(-1)=-3(x-7)
y+1=-3(x-7)

Final answer: B

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What would the equation be relating A (articles of clothing) and C (coupons)?

jolli1 [7]

C is the total amount and A is the #of articles of clothing

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