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2 years ago

Help on finding x and maybe the converse I got 30 minutes left until due please help

Mathematics

1 answer:

SVEN [57.7K]2 years ago

5 0

Answer:

I can't see the picture.

Step-by-step explanation:

Please repost it and then I can help :)

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A ball is thrown from a height of 45 meters with an initial downward velocity of 10 m/s. The ball's height h (in meters) after t

dmitriy555 [2]

Answer:

2.16 s

Step-by-step explanation:

When it hits the ground, height h=0 hence

$0=45-10t-5t^{2}$

$5t^{2}+10t-45=0$

$t^{2}+2t-9=0$

Using quadratic formula

$x=-1+\sqrt 10\\ x=-1-\sqrt 10$

Since time can't be negative, $-1+\sqrt 10$

t=2.16 s

7 0

2 years ago

HELP PLZ!!!! A courtyard in the shape of a right triangle is set in the middle of three square office buildings, with one office

BigorU [14]

Its A (The area of Building C minus the area of Building B equals the area of Building A)

8 0

3 years ago

Read 2 more answers

A group of finance managers at a car dealership estimates thatt 23% of all cars purchased last year were leases.If a sample of 8

vesna_86 [32]

Answer:

p = 0.52392

Step-by-step explanation:

Here we have

p = 23% = 0.23

$\hat p$ = 208/800 = 0.26

n = 800

q = 1-p = 0.77

α = 5% = 0.05

Here we have

Z test given by

$z=\frac{\hat{p}-p}{\sqrt{\frac{pq}{n}}}$

From which we have

From the Cpdf we have Probability = 0.0219, z = 2.016

Therefore from the z score = 0.0683, p = 0.52392 from z table.

5 0

3 years ago

Help asap!!!!!!!!!!!

svlad2 [7]

Answer:

The answer to your question is:

Step-by-step explanation:

12.-

x² - 6x = 5

x² - 6x + (3)² = 5 + (3)²

x² - 6x + 9 = 5 + 9

(x - 3)² = 14

13.- x² - 6x = 12

x² - 6x + (3)² = 12 + (3)²

x² - 6x + 9 = 12 + 9

(x - 3)² = 21

x - 3 = ±√21

x1 = √21 + 3 x2 = -√21 + 3

x1 = 7.58 x2 = -1.58

14.- 2x² - 24x = - 20 Divide by 2

x² - 12 x = -10

x² - 12x + (6)² = - 10 + (6)²

x² - 12x + 36 = - 10 + 36

( x - 6) ² = 26

x - 6 = ±√26

x1 = √26 + 6 x2 = -√26 + 6

x1 = 11.1 x2 = 0.9

3 0

3 years ago

Which function is increasing?

DerKrebs [107]

Answer:

A, it's the only one with a number greater then 1

5 0

2 years ago