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3 years ago

Can someone help with this question??

Mathematics

2 answers:

Luba_88 [7]3 years ago

5 0

Answer:

see explanation

Step-by-step explanation:

The x- intercepts are the points on the x- axis where the graph crosses.

The graph does not cross the x- axis thus there are no x- intercepts

The y- intercept is the point on the y- axis where the graph crosses.

The y- intercept is - 6

(c)

The vertex is the turning point of the graph, in this case ∩

The vertex = (2, - 2 )

(d)

The axis of symmetry is a vertical line passing through the vertex.

The equation of the axis of symmetry is x = 2

Step2247 [10]3 years ago

4 0

Answer:

Step-by-step explanation:

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Can someone please help

ASHA 777 [7]

Answer:

They cost 730 all together.

Step-by-step explanation:

One the surface area of the hall is 310m^2.

so, 310 divided by 25 is 12.4, which means they need 13 tin of paint.

The cost for it is 13*10 which is 130.

For the area of the floor, it is 40*15, which is 600m^2.

Which costs 600.

So, 600+130=730.

6 0

3 years ago

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drug sniffing dogs must be 95% accurate in their responses because their handlers don't want them to miss durgs and also don't w

GenaCL600 [577]

Answer:

95% Confidence interval: (0.8449,0.9951)

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 50

Number of times the dog is right, x = 46

$\hat{p} = \dfrac{x}{n} = \dfrac{46}{50} = 0.92$

95% Confidence interval:

$\hat{p}\pm z_{stat}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

Putting the values, we get:

$0.92 \pm 1.96(\sqrt{\dfrac{0.92(1-0.92)}{50}})\\\\ = 0.92\pm 0.0751\\\\=(0.8449,0.9951)$

(0.8449,0.9951) is the required 95% confidence interval for the proportion of times the dog will be correct.

7 0

3 years ago

ASAP<br> -WILL MARK BRIANIST

nalin [4]

83-8 =75

Therefore, 75 =b

6 0

3 years ago

Which situation can be represented by 12x=26.2

liraira [26]

A is the answer I would say

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3 years ago

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Please help I need this

ladessa [460]

Answer:

$4+2 i$

Step-by-step explanation:

$i=\sqrt{-1}$

$4+\sqrt{-4} =4+\sqrt{-1} * \sqrt{4} =4+i2$

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3 years ago

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