All categories

3 years ago

It’s My Final Test I’m not sure what the answer is

Mathematics

2 answers:

cestrela7 [59]3 years ago

7 0

Answer:

The answer is B .

Step-by-step explanation

Firstly

= (8 - √2 ) × ( 9 + √5 ) (writing the given only )

= 8 ( 9 + √5) - √2 ( 9+√5 ) ( multiplying them )

= 72 + 8√5 - 9√2 - √10

Hope you got it now

Elena-2011 [213]3 years ago

4 0

Answer:

Step-by-step explanation:

You might be interested in

Which is the standard form of the equation of the parabola shown in the graph?

djverab [1.8K]

Answer:

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Tell me numbersin order

Paul [167]

Part 1:-

cost to park of a day is= $25+$43+$61+$79 =$208

and the hourly rate to a paddle boat =208÷24=$8.6 per hour

______________________

<h3>What will Lin pay if she rents a paddleboat for 3.5 hours and splits the total cost with a friend? Completethe explanation.</h3>

The total cost to rent the boat will be

3.5 hours x $ 12 per hour + $ 5 =$47

if she spilt cost with a friend ,they will each pay$47 ÷ 2= $ 23.5

7 0

2 years ago

Wich relation is a function of x

faust18 [17]

Answer:

the first one

Step-by-step explanation:

In the other 2 i can see the x repeats itself meaning it isn't a function.

7 0

3 years ago

Can someone help me with this I’m very confused

shepuryov [24]

Answer:

is this a question meant to evaluate you, such as a test, exam, quiz, or assessment?

5 0

3 years ago

An appliance manufacturer claims to have developed a compact microwave oven that consumes a mean of no more than 250 W. From pre

Shtirlitz [24]

Answer:

Null Hypothesis, $H_0$ : $\mu \leq$ 250 W

Alternate Hypothesis, $H_A$ : $\mu$ > 250 W

Step-by-step explanation:

We are given that an appliance manufacturer claims to have developed a compact microwave oven that consumes a mean of no more than 250 W.

They take a sample of 20 microwave ovens and find that they consume a mean of 257.3 W.

Let $\mu$ = mean power consumption of microwave ovens.

So, Null Hypothesis, $H_0$ : $\mu \leq$ 250 W

Alternate Hypothesis, $H_A$ : $\mu$ > 250 W

Here, null hypothesis states that the mean power consumption of microwave ovens is no more than 250 W.

On the other hand, alternate hypothesis sates that the mean power consumption of microwave ovens is more than 250 W.

The test statistics that would be used here is One-sample z test statistics as we know about the population standard deviation;

T.S. = $\frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } }$ ~ N(0,1)

Hence, this would be the appropriate hypotheses to determine if the manufacturer's claim appears reasonable.

5 0

3 years ago