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3 years ago

I need to know the answer

Mathematics

1 answer:

BabaBlast [244]3 years ago

8 0

The right side has the apex of the roof on it, point (5,5). From the picture we see its slope is -1. It has to be the negation of the left slope for a symmetrical roof.

Point slope form tells us

y - b = m (x - a)

y - 5 = -1 (x - 5)

y = -x +5 + 5

y = -x + 10

Answer: y = -x + 10

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An object is launched vertically upward from a 25 foot platform and is modeled by the function s(t)=−16t2+11t+25.

ch4aika [34]

Correct option:

d. 1.64

<h2>Explanation:</h2>

An object is launched vertically upward from a 25 foot platform and is modeled by the following function:

$s(t)=-16t^2+11t+25$

So this is the equation of a parabola because the object is a projectile so it follows the Projectile Motion.

The object fall back to the ground when $s(t)=0$ so:

$-16t^2+11t+25=0 \\ \\ \\ Using \ quadratic \ formula: \\ \\ t_{12}=\frac{-b\pm \sqrt{b^2-4ac}}{2a} \\ \\ a=-16 \\ \\ b=11 \\ \\ c=25 \\ \\ \\ t_{12}=\frac{-11\pm \sqrt{11^2-4(-16)(25)}}{2(-16)} \\ \\ t_{12}=\frac{-11\pm 41.48}{-32} \\ \\ t_{1}=\frac{-11+ 41.48}{-32}=-0.95s \\ \\ t_{2}=\frac{-11- 41.48}{-32}=1.64s$

Since time can't be negative, we only choose the positive value. therefore:

<em>The object fall back to the ground after 1.64 seconds</em>

<h2>Learn more:</h2>

Projectile motion: brainly.com/question/12554459

#LearnWithbrainly

4 0

3 years ago

You are selling pizzas to raise money for a school field trip. Cheese pizza cost $8 and pepperoni pizza cost $9. You need to sel

Snowcat [4.5K]

Answer: $180 ≤ 8c + 9p

6 0

3 years ago

Are the two cones congruent? explain and include details to support your claim.

erica [24]

The two cones are not congruent because one of the cones is oblique in nature.

<h3>What are congruent shapes?</h3>

Congruent shapes are identical in size and shape. To put it another way, if you hold an object or element in a mirror, the picture you get is congruent to the object.

However, two figures may seem to be identical, but one side or angle in one figure may deviate significantly from the other. The easiest technique to assess sides and angles to check if they are equivalent or congruent is to use markings on figures.

When we apply that technique to the two figures, we realized that the two cones are not congruent because one of the cones is oblique in nature, this resulted in a difference in the slant height of the cones.

Learn more about congruent figures here:

brainly.com/question/25837892

6 0

2 years ago

Find value of X, please !!

Drupady [299]

Answer:

x=25

Step-by-step explanation:

60+70=130

180-130=50

50/2=25