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3 years ago

10

There were nine red roses and four white roses in the vase. Melanie cut some more roses from her flower garden. There are now si

xteen red roses in the vase. How many red roses did she cut?

1 answer:

Eva8 [605]3 years ago

8 0

Answer:

7 roses

Step-by-step explanation:

1. 9 red roses and 4 white roses

2. cuts more red roses and now has 16 so subtract

3. 16-9=7

4. She cut 7 red roses

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1. A system of linear equations that has one solution has slopes that are__________

algol13

Answer:

different

Step-by-step explanation:

different slopes gives one solution

same slopes with different constant has no solution

same slopes and constants has many solutions

3 0

3 years ago

From a random sample of 58 businesses, it is found that the mean time the owner spends on administrative issues each week is 21.

zzz [600]

Answer: (20.86, 22.52)

Step-by-step explanation:

Formula to find the confidence interval for population mean :-

$\overline{x}\pm z^*\dfrac{\sigma}{\sqrt{n}}$

, where $\overline{x}$ = sample mean.

z*= critical z-value

n= sample size.

$\sigma$ = Population standard deviation.

By considering the given question , we have

$\overline{x}= 21.69$

$\sigma=3.23$

n= 58

Using z-table, the critical z-value for 95% confidence = z* = 1.96

Then, 95% confidence interval for the amount of time spent on administrative issues will be :

$21.69\pm (1.96)\dfrac{3.23}{\sqrt{58}}$

$=21.69\pm (1.96)\dfrac{1.7}{7.61577}$

$=21.69\pm (1.96)(0.223221)$

$\approx21.69\pm0.83$

$=(21.69-0.83,\ 21.69+0.83)=(20.86,\ 22.52)$

Hence, the 95% confidence interval for the amount of time spent on administrative issues = (20.86, 22.52)

7 0

3 years ago

Sylvia has just discovered that the valve on her cement truck failed during the night and that all the contents ran out to form

lilavasa [31]

The volume would be exactly 256.76

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3 years ago

A study conducted at a certain college shows that 62% of the school's graduates find a job in their chosen field within a year a

Anna007 [38]

This can be done easily if you choose a different probability.
Find the chance that none of the 5 graduates find a job.
For one student that is 100%-62%=38%
This has to happen for all 5 students, that is P=(0,38)^5=0,008 (rounded)

This is the chance that none of the 5 students finds a job. All of the above cases at least one finds a job.

That is 1-0,008=0,992 (rounded)

8 0

3 years ago

Estimate the product/quotation of the problem below <br><br>724÷87

wariber [46]

Hi i hope this helps....

the answer to this problem is 8.321839080459770114942528735632183908
rounded answer =8

5 0

3 years ago