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3 years ago

HELP PLEASEEEEE!!!!!!

Mathematics

1 answer:

Hatshy [7]3 years ago

3 0

Answer:

Good sir/madam, what you put in is correct. Tell the person who assigned it about that.

Maybe you were just supposed to put (-5,-5)?

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A researcher wants to know if the average time in jail for robbery has increased from what it was when the average sentence was

kati45 [8]

At 95% confidence interval, the z score is 1.96. Using the formula:

Confidence Interval = x ± z s / sqrt (n)

where x is the average time served, s is standard deviation and n is number of samples

Confidence interval = 7.5 ± (1.96 * 3) / sqrt (400)

Confidence interval = 7.5 ± 0.294

<span>Confidence interval = 7.206 to 7.794</span>

5 0

4 years ago

A fair die is rolled once. Let A be the event of rolling an even number, and let B be the event of rolling a number greater than

IRISSAK [1]

Answer:

A ∩ B = {4, 6}

Step-by-step explanation:

A die had 6 faces

S = {1, 2, 3, 4, 5, 6}

If A be the event of rolling an even number, then;

A = {2, 4, 6}

If B be the event of rolling a number greater than 3, then;

B = {4, 5, 6}

A ∩ B are the values that are common to both sets

A ∩ B = {4, 6}

3 0

3 years ago

At big bens bakery 48 chocolate donuts were made,which is 6 times the number of cream filled donuts made.How many more chocolate

ratelena [41]

Answer:

The number of chocolate made donuts is 40 more than cream filed donuts

Step-by-step explanation:

Given as :

The number of chocolate donuts made = 48

The number of chocolate donuts is 6 times the number of cream filled donuts

So, Let the number of cream filled donuts = x

So, number of chocolate donuts made = $6\times x$

∴ $6\times x$ = 48

Or, x = $\frac{48}{6}$ = 8

So, the number of cream filled donuts = 8

Now ,

The number of chocolate donuts made - the number of cream filled donuts = 48 - 8 = 40

So , The number of chocolate made donuts is 40 more than cream filed donuts Answer

7 0

4 years ago

Help I need to get this done I have 15 questions

ivanzaharov [21]

Answer:

8 cm

Step-by-step explanation:

(See the image attached for details)

The blue segment measures 15 cm
The green segment measures 7 cm
The green and yellow segment when added form the blue segment
So: ? + 7 = 15

Solve:

? + 7 = 15

Subtract 7 on both sides:

? + 7 = 15

-7 -7

? = 8 cm

Therefore, the yellow segment, or the missing side length, measures 8 cm.

4 0

3 years ago

Plzzzzzzzzzzzzzzzzzz need help

vlada-n [284]

Answer: A

Step-by-step explanation:

$4x+4y=20$

We need to get this form: $y=mx+b$

we need to begin by isolating y on the left side. To do this, we must subtract 4x.

$4y=20-4x$

Rewrite it so that we get this form: $y=mx+b$

$4y=-4x+20$

Since y needs to be completely isolated, divide by 4.

$y=-\frac{4x}{4} +\frac{20}{5}$

Divide;

$y=-x+5$

7 0

3 years ago

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