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3 years ago

Dina's birthday was 125 days ago. If today is Sunday, on what day of the week did her birthday fall?

Mathematics

1 answer:

quester [9]3 years ago

4 0

Her birthday took place on a Saturday. :)

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The area of a rectangular room is 750 square feet. The width of the room is 5 feet less than the length of the room.

neonofarm [45]

The third one. width=y-5

6 0

3 years ago

How do u solve this question in the picture

dedylja [7]

1/2 over -2/5 + (-1/4)

10/20 over -8/20 + (-5/20)

1 5/20 + (-5/20)

1

The answer is 1

6 0

3 years ago

Use the sample data and confidence level to construct the confidence interval estimate of the population proportion p. n equals

Alekssandra [29.7K]

Answer:

(0.767,0.833)

Step-by-step explanation:

The 95% confidence interval for population proportion p can be computed as

$p-z_{\frac{\alpha }{2} } \sqrt{\frac{pq}{n} }$

The z-value associated with 95% confidence level is 1.96.

whereas p=x/n

We are given that x=440 and n=550.

p=440/550=0.8

$0.8-1.96\sqrt{\frac{0.8(0.2)}{550} }$

$0.8-1.96\sqrt{\frac{0.16}{550} }$

$0.8-1.96\sqrt{0.00029 }$

$0.8-1.96(0.01706)$

$0.8-0.03343$

$0.76657$

Thus, the required confidence interval is

0.767<P<0.833 (rounded to 3 decimal places)

Hence, we are 95% confident that our true population proportion will lie in the interval (0.767,0.833)

3 0

3 years ago

Helllllp me pleaseeeeeeeeee

Andrej [43]

Answer:

10/11>9/11>7/11

Step-by-step explanation:

It is 10 out of eleven which is bigger than 9 out of eleven which is bigger than 7 out of eleven.

3 0

3 years ago

Jared has a wooden board that is 11 ft long. He wants to cut it into 2 pieces so that the longer piece is 4 ft less than 4 times

Kaylis [27]

X+y=11

x is longer than y
x>y
x is 4 less than 4 times y
x=-4+4y

sub back
x+y=11
-4+4y+y=11
-4+5y=11
add 4 to both sides
5y=15
divide both sides by 5
y=3

sub back
x=-4+4y
x=-4+4(3)
x=-4+12
x=8

the pieces are 8ft and 3ft

4 0

3 years ago