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2 years ago

Marking brainliest What does do u see , what does it mean and why does it matter

Mathematics

2 answers:

soldier1979 [14.2K]2 years ago

7 0

Answer:

It's a graph

Step-by-step explanation:

It means something that shows less, and more. It matters because it is a use to show important information about how much of the amount has used.

Tems11 [23]2 years ago

3 0

So 45% of teens are on social media constantly, this means that almost half of teens spend a lot of their day on technology, especially yt which 85% of teens said they were on. this matters because it can show what teens like and if any social media platforms should be cause for concern with how much time teens spend on it and how much teens are on the app.

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Which graph represents the function h(x)=x+0.5

Fynjy0 [20]

Answer:

The correct graph of h(x) will be number 3 (c).

Step-by-step explanation:

We have the function h(x) = |x| + 0.5

On putting x=0, in the function h(x), we get,

h(0) = |0| + 0.5

h(0)=0 + 0.5

h(0)=0.5

Thus, the point (0,0.5) lie on the graph of h(x).

3 0

2 years ago

I NEED HELP ASAP

astraxan [27]

area of a square = s²

s² = 196

s = √196

therefore s = 14cm

hope it helps...!!!

3 0

2 years ago

Read 2 more answers

Write an inequality to model the situation. the maximum speed on the highway , x is 55 mi/h

OLEGan [10]

A maxm speed of 55 mph means that the speed has to be lexx than or equal to 55

x <= 55

6 0

3 years ago

Read 2 more answers

The amount of money spent on textbooks per year for students is approximately normal.

Ostrovityanka [42]

Answer:a

$336.04 < \mu < 443.96$

The margin of error will increase

The margin of error will decreases

The 99% confidence interval is $0.4107 < p < 0.4293$

Step-by-step explanation:

From the question we are told that

The sample size $n = 19$

The sample mean is $\= x = \$\ 390$

The standard deviation is $\sigma = \$ \ 120$

Given that the confidence level is 95% then the level of significance is mathematically represented as

$\alpha = 100 - 95$

$\alpha = 5 \%$

$\alpha = 0.05$

Next we obtain the critical value of $\frac{\alpha }{2}$ from the normal distribution table

$Z_{\frac{\alpha }{2} } = 1.96$

The margin of error is mathematically represented as

$E = Z_{\frac{\alpha }{2} } * \frac{\sigma}{\sqrt{n} }$

=> $E = 1.96 * \frac{120}{\sqrt{19} }$

=> $E = 53.96$

The 95% confidence interval is

$\= x - E < \mu < \= x + E$

=> $390 - 53.96 < \mu < 390 - 53.96$

=> $336.04 < \mu < 443.96$

When the confidence level increases the $Z_{\frac{\alpha }{2} }$ also increases which increases the margin of error hence the confidence level becomes wider