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3 years ago

You want to make a picture frame for a photo. The photo is 8 inches by 10 inches. How many feet of wood do you need?

Mathematics

2 answers:

professor190 [17]3 years ago

8 0

Answer:

80 inches

Step-by-step explanation:

Your pretty much finding the area so you would multiply 8 x 10

monitta3 years ago

3 0

Answer:

80 inches

Step-by-step explanation:

8x10

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A sample of students from an introductory psychology class were polled regarding the number of hours they spent studying for the

Anni [7]

Answer:

$8.68,13.16$

Step-by-step explanation:

Hint- First we have to calculate the mean and standard deviation of the sample and then applying formula for confidence interval we can get the values.

Mean of the sample is,

$\mu=\dfrac{\sum _{i=1}^{24}a_i}{24}=\dfrac{262}{24}=10.92$

Standard deviation of the sample is,

$\sigma =\sqrt{\dfrac{\sum _{i=1}^{24}\left(x_i-10.92\right)^2}{24-1}}=5.6$

The confidence interval will be,

$=\mu \pm Z\dfrac{\sigma}{\sqrt{n}}$

Here,

Z for 95% confidence interval is 1.96, and n is sample size which is 24.

Putting the values,

$=10.92 \pm 1.96\cdot \dfrac{5.6}{\sqrt{24}}$

$=10.92 \pm 2.24$

$=8.68,13.16$

Confidence interval is used to express the degree of uncertainty associated with a sample.

95% confidence interval means that if we used the same sampling method to select different samples and calculate an interval, we would expect the true population parameter to fall within the interval for 95% of the time.

5 0

3 years ago

Which rule explains why these triangles are congruent?

Dima020 [189]

Answer:

ASA

Step-by-step explanation:

ANGLE SIDE ANGLE

according to your option

8 0

2 years ago

Help please :) <br> V74 <br> V74

Lelechka [254]

Answer:

x =10

Step-by-step explanation:

Using the pythagoras theorem om one of the right triangle;

(√74)² = (x/2)²+7²

74 = (x/2)²+49

(x/2)² = 74 - 49

(x/2)² = 25

Square root both sides

√ (x/2)² = ±√25

x/2 = ±5

x = 2 * ±5

x = ±10

Hence the value of x is 10

8 0

2 years ago

The Raimonde family drove 1,764 miles across the United States on their vacation.If it took a total of 28 hours, what was their

LuckyWell [14K]

Miles per hour = Total miles/ total no of hours
1764 miles divided by 28 hours = 63 mph

8 0

3 years ago

2 13/18 −z=1 19/36 <br><br>Answer

allsm [11]

Answer:

Answer is z= 43/36

Step-by-step explanation:

We have given,

2 13/18 - z = 1 19/36

Since 2 13/18 = 49/18 and 1 19/36 = 55/36

So we can write,

2 13/18 - z = 1 19/36

or 49/18 - z = 55/36

or 49/18 - 55/36 = z

or (98 -55)/36 = z

or 43/36 = z

Hence we got z = 43/36

3 0

3 years ago