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3 years ago

Is y = |x + 3| a linear function yes or noO

Mathematics

2 answers:

vekshin13 years ago

4 0

Answer:

Yes

Step-by-step explanation:

Because it passes vertical line test.

Nonamiya [84]3 years ago

4 0

Yes, because y = x + 3 is a first degree function which is a linear function. Just ignore the absolute value.

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Angles A and B are supplementary. Angle A has a measure of 80°. What is the measure of angle B?

erica [24]

The measurement of angle b is equal to 100

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3 years ago

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Look at this graph: What is the slope? Simplify your answer and write it as a proper fraction, improper fraction, or integer.

Simora [160]

The slope is 3/2 because it rises 3 and goes over 2

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2 years ago

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john has a goal to ride his bike at least 100 miles this summer, john has ridden 12 miles thus far. there are 40 days left in th

denis-greek [22]

Answer: $12 + 40d\geq 100$

Step-by-step explanation:

Since, the miles john have cover = 12 miles.

And, the remaining days he has = 40

If d is the average miles he cover in these 40 days.

Then, the total miles he cover in 40 days= 40 d

Thus, the total miles he cover in this summer = 12 + 40 d

According to the question,

He has a goal of covering at least 100 miles in this summer.

That is, the total miles he cover in this summer ≥ 100

⇒ 12 + 40 d ≥ 100

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3 years ago

Coordinates, gradient and tangent work (see image).

Ivenika [448]

Answer:

a) $P(x,2x^2-5),\ Q(x+h,2(x+h)^2-5)$

b) $4x+2h$

c) $4x$

Step-by-step explanation:

Given the curve

$y=2x^2-5$

a) If the x-coordinate of P is $x$ , then the y-coordinate is $2x^2-5,$ so point P has coordinates $(x,2x^2-5)$

If the x-coordinate of Q is $x+h$ , then the y-coordinate is $2(x+h)^2-5$ so point Q has coordinates $(x+h,2(x+h)^2-5)$

b) The gradient of the secant RQ is

$\dfrac{y_Q-y_P}{x_Q-x_P}\\ \\=\dfrac{(2(x+h)^2-5)-(2x^2-5)}{(x+h)-x}\\ \\=\dfrac{2(x+h)^2-5-x^2+5}{x+h-x}\\ \\=\dfrac{2(x+h)^2-2x^2}{h}\\ \\=\dfrac{2x^2+4xh+2h^2-2x^2}{h}\\ \\=\dfrac{4xh+2h^2}{h}\\ \\=4x+2h$

c) If $h\rightarrow 0,$ then the gradient $4x+2h\rightarrow 4x$

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2 years ago

Find the value of the expression 300÷ 25=

Yanka [14]

Answer: 12

Step by step explanation:

divide 300 by 25 using long divison or use a calculator

7 0

3 years ago

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