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3 years ago

If 89 X 25 = 2225 work out 89 x 250?

Mathematics

2 answers:

Andreas93 [3]3 years ago

5 0

89 times 250 is just going to be 22,250. It's just adding one more zero!

joja [24]3 years ago

5 0

So to work this question out
so if 89x25 = 2225 and 89x250= 22250 so basically ur just adding a zero

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Sandals are on sale for 30% off. The original

Mkey [24]

Answer:

$21

Step-by-step explanation:

Step one we find what 30% of $30 is, percentage is a number over 100;
$\frac{30}{100}*30=9$ , so 9 dollars
Now this is the amount of the discount, so we take it out of $30
So $30-$9=$21
That's the discount

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3 years ago

Read 2 more answers

Expand & simplify

Wittaler [7]

Answer:

6(2a+4)-4(3a-4)= (12a+24) +(-12a+16) = 40

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2 years ago

I don’t think i have the right answer so I’m checking it to make sure

dexar [7]

I believe the answer is the last one. I hope this helps love! :)

4 0

3 years ago

when Dallas committed to work one morning his average speed was 45 mph. On the return trip he average only 35 mph. Due to conges

defon

The required distance is 16.40 km.

This problem can be solved if we know the concept of speed, time and distance.

We know the speed= $\frac{distance}{time}$

To solve the problem let us assume that the total distance between the workplace and home is x km.

Given that his speed while going from home to work is 45 mph and while returning is 35 mph.

Time for the complete journey is $\frac{5}{6}hr$ .

Now according to question;

$\frac{x}{45}+\frac{x}{35}=\frac{5}{6}$

⇒ $\frac{7x+9x}{315}=\frac{5}{6}$

⇒ $16x=\frac{5*315}{6}$

⇒ $x=\frac{5*315}{6*16}$

∴ $x=16.40\ km$

So, the required distance is 16.40 km.

To learn more about speed, distance and time visit the link:

brainly.com/question/15256256

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5 0

2 years ago

In a study of 799 randomly selected medical malpractice lawsuits, it was found that 499 of them were dropped or dismissed. Use

Mademuasel [1]

Answer:

Claim is true that most medical malpractice lawsuits are dropped or dismissed.

Step-by-step explanation:

Given :In a study of 799 randomly selected medical malpractice lawsuits, it was found that 499 of them were dropped or dismissed.

To Find : Use a 0.05 significance level to test the claim that most medical malpractice lawsuits are dropped or dismissed.

Solution:

n = 799

x = 499

We will use one sample proportion test

$\widehat{p}=\frac{x}{n}\\\widehat{p}=\frac{499 }{ 799}\\\widehat{p}=0.6245$

We are given that the claim is most medical malpractice lawsuits are dropped or dismissed.

Probability of dropped or dismissed is 1/2

$H_0:p=0.5\\H_a:p>0.5$

Formula of test statistic = $\frac{\widehat{p}-p}{\sqrt{\frac{p(1-p)}{n}}}$

= $\frac{0.6245-0.5}{\sqrt{\frac{0.5(1-0.5)}{799}}}$

= 7.038

p value (z>7.038) is 0

α =0.05

So, p value < α

So, we reject the null hypothesis

So,claim is true

Hence most medical malpractice lawsuits are dropped or dismissed.

6 0

3 years ago