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4 years ago

What is the y-intercept of the line shown? 2 3 4

Mathematics

2 answers:

iren2701 [21]4 years ago

6 0

They y intercept is 4.

Sunny_sXe [5.5K]4 years ago

4 0

4, Because the line crosses the y-axis at 4.

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It costs $56 to rent a tent for 7 days. Write an equation that represents the cost to rent a camping tent for xdays.

Lapatulllka [165]

the equation might be 8x=y.

7 0

3 years ago

Please help!! What Find the Error and explain why it is wrong!

Nata [24]

Answer:

First image attached

The error was done in Step E, because student did not multiply $2\cdot x -8$ by the negative sign in numerator. Step E must be $\frac{2\cdot x -5}{(x+4)\cdot (x-4)}$ .

Second image attached

The error was done in Step C, because the student omitted the $2\cdot a \cdot b$ of the algebraic identity $(a+b)^{2} = a^{2}+2\cdot a\cdot b +b^{2}$ . Step C must be $5\cdot x = x^{2}+4\cdot x + 4$

Step-by-step explanation:

First image attached

The error was done in Step E, because student did not multiply $2\cdot x -8$ by the negative sign in numerator. The real numerator in Step E should be:

$3-(2\cdot x -8)= 3-2\cdot x+8 = 11-2\cdot x$

Hence, Step E must be $\frac{2\cdot x -5}{(x+4)\cdot (x-4)}$ .

Second image attached

The error was done in Step C, because the student omitted the $2\cdot a \cdot b$ of the algebraic identity $(a+b)^{2} = a^{2}+2\cdot a\cdot b +b^{2}$ . Step C must be $5\cdot x = x^{2}+4\cdot x + 4$

And further steps are described below:

Step D

$x^{2}-x+4 = 0$

Which according to the Quadratic Formula, represents a polynomial with complex roots. That is: ( $a = 1$ , $b = -1$ , $c = 4$ )

$D = b^{2}-4\cdot a\cdot c$

$D = (-1)-4\cdot (1)\cdot (4)$

$D = -17$ (Conjugated complex roots)

Step E

$(x-0.5-i\,1.936)\cdot (x-0.5+i\,1.936) = 0$

Step F

$x = 0.5+i\,1.936\,\lor\,x = 0.5-i\,1.936$

8 0

3 years ago

000

grigory [225]

Answer:

Step-by-step explanation:

4 0

3 years ago

Based on the data set shown, which of the following is a true statement?

patriot [66]

The mean, median, and mode are equal to 1. So among the choices, the first one is correct - mean = mode

Mean - an average of the given set of number; to find this, add the numbers and divide it by 11 (the number of given data)
= (-1 + -1 + 0 + 1 + 1 + 1 + 1 + 2 + 2 + 2 + 3) / 11
= 1

Median - the middle or center of the given set; to find this, arrange the numbers in numerical order, then get the center or middle number as the median
= -1, -1, 0, 1, 1, 1, 1, 2, 2, 2, 3
= [-1, -1, 0, 1, 1,] 1, [1, 2, 2, 2, 3]

Mode - is the value that occurs most of the time in the given set; so obviously number 1 occurred four times so 1 is our mode

3 0

3 years ago

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Which function forms an arithmetic sequence when x = 1,2,3,…? ( help please! )

MariettaO [177]

Step-by-step explanation:

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2 years ago