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3 years ago

Hellpppopppo plzehhshshshs

Mathematics

1 answer:

faust18 [17]3 years ago

8 0

Answer:

145 boxes

Step-by-step explanation:

Perform the following division:

$650

--------------- = 144.4 boxes

$4.50/box

Since we can't sell partial boxes, we conclude that 145 boxes are necessary to reach the $650 goal.

Check: ($4.50/box)(145 boxes) = $652.50. That's correct; we wanted to take in at least $650.

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A _____ is a pair of equal ratios. A) proportion B) ratio C) decimal D) percent

nekit [7.7K]

<span>In the statement "A _____ is a pair of equal ratios.", the word that completes is A, proportion. A proportion is a numerical correlation between two numbers. Frequently, these numbers can speak to an examination of things or individuals. For instance, say you strolled into a room brimming with individuals. </span>

4 0

3 years ago

An object is propelled upward from the top of a 300 foot building. The path that the object takes as it falls to the ground can

serg [7]

Answer:

As per the statement:

The path that the object takes as it falls to the ground can be modeled by:

h =-16t^2 + 80t + 300

where

h is the height of the objects and

t is the time (in seconds)

At t = 0 , h = 300 ft

When the objects hit the ground, h = 0

then;

-16t^2+80t+300=0

For a quadratic equation: ax^2+bx+c=0 ......[1]

the solution for the equation is given by:

$x = \frac{-b\pm \sqrt{b^2-4ac}}{2a}$

On comparing the given equation with [1] we have;

a = -16 ,b = 80 and c = 300

then;

$t= \frac{-80\pm \sqrt{(80)^2-4(-16)(300)}}{2(-16)}$

$t= \frac{-80\pm \sqrt{6400+19200}}{-32}$

$t= \frac{-80\pm \sqrt{25600}}{-32}$

Simplify:

$t = -\frac{5}{2}$ = -2.5 sec and $t = \frac{15}{2}$ = 7.5 sec

Time can't be in negative;

therefore, the time it took the object to hit the ground is 7.5 sec

8 0

4 years ago

It is known that 10% of the calculators shipped from a particular factory are defective. what is the probability that at least o

seraphim [82]

P = 10% = 0.1
q = 1 - 0.1 = 0.9
P(at least one defective calculator) = P(1) + P(2) + P(3) + P(4) = 1 - P(0)

The brobability of a binomial distribution is given by
$P(x)=^nC_xp^xq^{n-x}$
where: n = 4
$P(0)=^4C_0(0.1)^0(0.9)^4=1\times1\times0.6561=0.6561$
Therefore,
P(at least one defective calculator) = 1 - 0.6561 = 0.3439

6 0

4 years ago

How do I solve this?

kirill115 [55]

Rewrite -32 as( -2)^5 5squareroot (-2)^5 Assume positive real numbers You will get -2

5 0

3 years ago

Read 2 more answers

Suppose 300 randomly selected people are surveyed to determine whether or not they rent their home. Of the 300 surveyed, 60 repo

Vinil7 [7]

Answer: (0.143, 0.257)

Step-by-step explanation: