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3 years ago

Ahmad and Cameron solved the same inequality but got different answers one of the solution is incorrect find and correct error

Mathematics

1 answer:

Alex73 [517]3 years ago

3 0

What is the equation.

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If one box of cookies equal 9 cookies, then 2 boxes equals 18 cookies. How many does 3 boxes plus 2 equal equal to?

anygoal [31]

Answer:

29 cookies

Step-by-step explanation:

x=9,2x=18,3x+2=3(9)+2=29

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3 years ago

Evaluate 15/r -1 when r = 5

Juli2301 [7.4K]

$\frac{15}{r}-1=\frac{15}{5}-1=3-1=2$

2)
$\frac{15}{r-1}=\frac{15}{5-1}=\frac{15}{4}=3\frac{3}{4}=3.75$

4 0

3 years ago

Read 2 more answers

Whats the answer to this question

mylen [45]

A is the answer because divide 74.5 by 10 and get 7.45 then 7.45 times the X or number of boxes gets you the Y or the cost of the boxes.

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4 years ago

Suppose that from a standard deck, you draw three cards without replacement. What is the expected number of kings that you will

aksik [14]

I would say... None.
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3 0

3 years ago

Factor 4x^2 + 1x – 13

bulgar [2K]

Answer:

$(x - \frac{\sqrt{209} - 1}{8} )(x - \frac{-1 - \sqrt{209} }{8} )$

Step-by-step explanation:

FACTS TO KNOW BEFORE SOLVING :-

Quadratic Formula :-

Lets say , there's an equation ax² + bx + c.

$=> x = \frac{-b + \sqrt{b^2 - 4ac} }{2a} \: or \: \frac{-b - \sqrt{b^2 - 4ac} }{2a}$

SOLUTION :-

According to the question ,

a (Coefficient of x²) = 4

b (Coefficient of x) = 1

c (constant) = -13

By using quadratic formula ,

$x = \frac{-1 + \sqrt{1^2 - 4 \times 4 \times (-13)} }{2 \times 4} \: or \: \frac{-1 - \sqrt{1^2 - 4 \times 4 \times (-13)} }{2 \times 4}$

$=> x = \frac{-1 + \sqrt{209} }{8} \: or \: \frac{-1 - \sqrt{209} }{8}$

$=> (x - \frac{\sqrt{209} - 1}{8} ) \: and \: (x - \frac{-1 - \sqrt{209} }{8} )$ are the factors of 4x² + x - 13.

6 0

3 years ago