3 years ago

Draw the straight line y= x+2

Mathematics

1 answer:

liubo4ka [24]3 years ago

8 0

Answer:

Attached below

Step-by-step explanation:

Hope this helped

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URGENT I HAVE ALMOST 0 TIME LEFT I NEED LAST MINUTE HELP

jonny [76]

Answer:

The zeros are the points where the parabola intercepts the x-axis.

$\sf x = 7 \implies x - 7 = 0$

$\sf x = 1 \implies x - 1 = 0$

$\sf \implies y = a(x - 7)(x - 1)$ where a is some constant

If the parabola passes through point (3, 4) then:

$\sf \implies a(3 - 7)(3 - 1) = 4$

$\sf \implies a(-4)(2) = 4$

$\sf \implies -8a = 4$

$\sf \implies a = -\dfrac12$

So the equation of the parabola is:

$\sf y = -\dfrac12(x - 7)(x - 1)$

Or in standard form:

$\sf y = -\dfrac12x^2+4x-\dfrac72$

7 0

1 year ago

Fifteen more than twice a number 9 is

Leokris [45]

The question is asking 15+2*9=? so to do this first multiply 2*9 which = 18 and then add 15, 18+15= 33

6 0

3 years ago

Read 2 more answers

I mainly need help with #10, thank you!

Masja [62]

Answer:

10) 40

Step-by-step explanation:

just subtract 95 and 55

8 0

3 years ago

What is the slope of this line A -1/2 B 1/2 C 2

denpristay [2]

-1/2 is your answer to this question

4 0

2 years ago

A teacher claims that the proportion of students expected to pass an exam is greater than 80%. To test this claim, the teacher a

erica [24]

Answer:

z=-1.591

Step-by-step explanation:

Null Hypotheses,

$H_0 : p=0.8\\H_a: p>0.80$

So we use z-test for one population proportion (right-tailed test)

According to this informaton, we defined that

$\alpha=0.05$

$z_c=1.64$ (critical value)

So our Rejection region is $R={z:z>1.64}$

$z=\frac{\bar{p}-p_0}{\sqrt{p_0(1-p_0)/n}} = \frac{0.755-0.8}{\sqrt{0.8(1-0.8)/200}}=-1.591$

Not rejection.

6 0

3 years ago