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ANEK [815]
1 year ago
6

In need of help immediately !!!

Mathematics
1 answer:
Andrew [12]1 year ago
3 0
Answer is 13 yards of ribbon

Step by step

She started out with $25
She had a remainder of $22.14

Subtract
25 - 22.14 = $2.86 she spent on ribbon

Divide $2.86 by .22 per yard = 13 yards

Problem solved
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X + 2y = 5<br> y = 6x + 3
ki77a [65]

Answer:

x = −1/13 and y = 33/13 or 2 7/13

Step-by-step explanation:

x+2y=5

x+2(6x+3)=5

x+12x+6=5

13x+6=5

-6        -6

13x= -1

/13     /13

<u>x= -1/13</u>

y=6x+3

y=6(-1/13)+3

y= 33/13

y= 2 7/13

5 0
3 years ago
This problem addresses some common algebraic errors. For the equalities stated below assume that x and y stand for real numbers.
weqwewe [10]

Answer:

The answers are:

a) (x+y)^2 = x^2 + y^2 is FALSE.

b) (x+y)^2 = x^2 + 2xy + y^2 is TRUE.

c) \frac{x}{x+y}= \frac{1}{y} is FALSE.

d) x-(x+y) = y is FALSE.

e) \sqrt{x^2} = x is FALSE.

f) \sqrt{x^2} = |x| is TRUE.

g) \sqrt{x^2+4} = x+2 is FALSE.

h) \frac{1}{x+y} = \frac{1}{x} + \frac{1}{y} is FALSE.

Step-by-step explanation:

We can show that the FALSE statement are, in fact, false finding an example where the equality fails.

a) Take x=2 and y=3 and notice that (2+3)² = 25, while 2²+3²=4+9=13.

b) (x+y)² = (x+y)(x+y)=x²+xy+xy+y² = x² +2xy +y².

c) Take x=2 and y=3 and notice that 2/(2+3) = 2/5 which is different from 1/3.

d) Take x=2 and y=3 and notice that 2-(2+3) = 2-5=-3 which is different from 3. Recall that x-(x+y) = x-x-y=-y.

e) Take x=-2, and notice that [tax]\sqrt{(-2)^2} = \sqrt{4} = 2[/tex] which is different from -2.

f) The previous example illustrate why this is true.

g) Take x=1, and notice that sqrt{1^2+4} = \sqrt{5} which is different from 3.

h) Take x=2 and y=3 and notice that 1/(2+3)=1/5 and 1/3+1/2 = 5/6.

3 0
3 years ago
A box contains 17 transistors three of which are defective. If three are selected find the probability that
Fiesta28 [93]

Answer:

I think the answer is A

7 0
3 years ago
Often the terms of a polynomial will have more than one factor in common. When this happens, you should factor out the _____ com
Yuki888 [10]
Well it's really simple honestly if you take you time and read the sentence you see that it's missing the GREATEST part
5 0
3 years ago
Read 2 more answers
Explain why you cannot find the intersection points of the two lines shown below. Give both an algebraic reason and a graphical
Art [367]

Answer:

m_1 = m_2 = 4

Step-by-step explanation:

Given

y = 4x + 1

y = 4x + 10

Required

Show that these two lines have no point of intersection

The general equation of a line is

y = mx + b

Where m represents slope

In y = 4x + 1

m = 4

Similarly; in y = 4x + 10

m = 4

Since the slope of both lines are equal;

m_1 = m_2 = 4

<em>This implies that the lines are parallel and parallel lines have no point of intersection</em>

<em></em>

<em>See Attachment for Graph</em>

5 0
4 years ago
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