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Natalija [7]
2 years ago
9

On a coordinate plane, a solid straight line has a positive slope and goes through (negative 4, 0) and (0, 2). Everything to the

right of the line is shaded. Which linear inequality is represented by the graph?
Mathematics
1 answer:
KatRina [158]2 years ago
3 0

Answer:

42 TOTAL

Step-by-step explanation:

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Boris has ridden 21 miles of a bike course. The course is 30 miles long. What percentage of the course has Boris ridden so far?
snow_lady [41]

Answer:

70%

Step-by-step explanation:

21/30 * 100 = 70%

3 0
2 years ago
a suit is being sold at a 20 % off (discount). The sale price is $ 270. What was the original price ?
Lisa [10]

Answer:

The original price is 337.50

Step-by-step explanation:

If we get 20% off, we still have to pay 100-20 =80%

Let x be the original price

x *80% = 270

.80x = 270

Divide each side by .80

.80x/.80 = 270/.80

x =337.50

The original price is 337.50

5 0
3 years ago
Read 2 more answers
Derivatives of inverse trigonometric functions please explain answers
Jobisdone [24]

I'll explain how to do the first one:-

y = cos-1(x2)

This can be described as ' a function of a function'   x^2 is a function of x and cos-1(x^2) is a function of x^2.

We need to  apply the chain rule.

Personally I find this  easier to understand if i let u = x^2, so

If y = f(u) and u is a function of x then

dy/dx = dy/ du * du/dx

Here u = x^2  and y = cos-1(u)

du/dx = 2x

so dy/dx = d(cos-1(x^2) dx = dy/du * du/dx


= -1 / √(1 - u^2) * 2x

= -2x / √(1 - u^2)    

= -2x / √(1 - (x^2)^2)

= -2x / √(1 - x^4)

I hope this helps. but if not. you might like to employ the formulae in the question - The square boxes contain the 'u' s in my answer. These formulae are equivalent to my explanation.

6 0
3 years ago
Given that and , determine which lines are parallel
777dan777 [17]
What lines and here is how parallel looks

_________
_________

these lines r parallel      
and parallel lines r lines that go on forever but NEVER touch

7 0
3 years ago
Tia's teacher asked her to find the product of 8 and 207 in her head. Which of the following describes the best way for Tia to m
Mkey [24]

Answer:

the answer is number 2

Step-by-step explanation:

207                    200

<u>x   8</u>                    <u>x   8</u>                                                                                                                                                    

1656                   1600

                        <u>  + 56</u>

                           1656

                         

3 0
3 years ago
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