Suppose that 13 inches of wire costs 78 cents. At the same rate, how much (in cents) will 6 inches of wire cost?

What is the slope of the line passing through the points (2.-3) and (4,3). Make sure you reduce your answer answer.

svet-max [94.6K]

Answer:

3

Step-by-step explanation:

We must find the slope using the slope formula.

Slope: $m=\frac{y_2-y_1}{x_2-x_1}$

We substitute $x_1=2\\y_1=-3$ and $x_2=4\\y_2=3$

$m=\frac{3-(-3)}{4-2}$

$m=\frac{3+3}{2}=\frac{6}{2} =3$

5 0

3 years ago

Tell me the answer!!

algol [13]

Answer:

I think answer number 1 and number 4

Step-by-step explanation:

to find the perimeter you add all the sides together, there are 4 sides in the square so it will be 2+2+2+2 which will give you 8 and you can also multiply 2 by the 4 sides which will also give you 8

6 0

3 years ago

Read 2 more answers

What is 19/25 as a percent

Jlenok [28]

Answer:

76%

Step-by-step explanation:

Take 19/25.

Multiply them by 4.

76/100

Turn into a percentage

76%

4 0

3 years ago

Suppose babies born after a gestation period of 32 to 35 weeks have a mean weight of 2500 grams and a standard deviation of 500

kolezko [41]

Answer:

The 35-week gestation period baby has a z-score of 0.7.

The 41-week gestation period baby has a z-score of 0.89

Since the 41-week gestation period baby has a higher z-score, he weighs more relatively to his gestation period.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Which baby weighs more relative to the gestation period?

The baby with the higher z-score.

35-week gestation period baby weighs 2850 grams

Suppose babies born after a gestation period of 32 to 35 weeks have a mean weight of 2500 grams and a standard deviation of 500 grams

This means that Z is found when $X = 2850, \mu = 2500, \sigma = 500$

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{2850 - 2500}{500}$

$Z = 0.7$

The 35-week gestation period baby has a z-score of 0.7.

41-week gestation period baby weighs 3150 grams.

Babies born after a gestation period of 40 weeks have a mean weight of 2800 grams and a standard deviation of 395 grams.

This means that Z is found when $X = 3150, X = 2800, \mu = 395$

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{3150 - 2800}{395}$

$Z = 0.89$

The 41-week gestation period baby has a z-score of 0.89

Since the 41-week gestation period baby has a higher z-score, he weighs more relatively to his gestation period.

5 0

3 years ago

Please answer quick and right

sleet_krkn [62]

Answer:

3.

Step-by-step explanation:

Since it states it needs to be cut into pieces, it's division, so since it's division we do KCF - keep change flip

We keep the first term, then we change the sign to a multiplication sign and flip the numerator and the denominator for the second term, so your equation would be :

6/8 × 4/1

6 times 4 would be 24, then we put 24 over 8, 24/8, - then you just divide 24 by 8 which would be 3. I hope this helps.

4 0

4 years ago