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Nuetrik [128]
3 years ago
14

A box contains

Mathematics
1 answer:
Usimov [2.4K]3 years ago
7 0
<span>the probability that a pen from the first box is selected
= total number of pens in 1st box/total number of objects in box 1
= 5/12

</span>the probability that a crayon from the second box is selected 
= total number of crayons in 2nd box/total number of objects in box 2
= 6/8 = 3/4
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Solve for x.
Masteriza [31]

Answer:

x = 2.5 or -0.8

Step-by-step explanation:

Here, we are to use completing the square method to solve for the values of x

Firstly, we divide through by 4

= x^2 -7/4x -2 = 0

Now, we move the two term to the right hand side

x^2 -7/4x = 2

Now, we divide the coefficient of x by 2 and square it;

That would be;

(-7/4 * 1/2)^2 = 49/64

we now add this value to both sides of the equation

x^2 -7/4x + 49/64 = 2 + 49/64

The right hand side can be rewritten as;

(x-7/8)^2 = 177/64

taking the square root of both sides

x-7/8 = √(177/64)

x = 7/8 ± √(177/64)

x = 7/8 + √(177/74) or 7/8 - √(177/64)

= x = 2.53802 or -0.788017

Which to the nearest tenth is

x = 2.5 or -0.8

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If a scale drawing of a car is 3 inches and the real car is 15 feet what is the scale and the scale factor
mote1985 [20]

Answer:

5

Step-by-step explanation: 3x5=15

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Step-by-step explanation:

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\boldsymbol{\sf{\dfrac{5}{3}x+4=\dfrac{2}{3}x   }}

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\boldsymbol{\sf{\dfrac{5}{3}x+4-\dfrac{2}{3}x=0    }}

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\boldsymbol{\sf{x+4=0 }}

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\boldsymbol{\sf{x=-4 }}

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More likely a line graph

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