a study of iron deficiency among infants compared samples of infants following different feeding regimens. one group contained breast-fed infants, while the children in another group were fed a standard baby formula without any iron supplements. here are summary results on blood hemoglobin levels at 12 months of age is there significant evidence that the mean hemoglobin level is higher among breast-fed babies?

Answer:

identify

Step-by-step explanation:

There are 10 possible selections of groups of 2 students.

We have,

Number of students in chess club= 5

and, 2 students selected at random.

So, the possible number of selection

= C(5, 2)

= 5! / 2! (5-2)!

= 5!/ 2! 3!

= 5 x 4 /2

= 10

Thus, there are 10 possible selection.

Learn more about Combination here:

https://brainly.com/question/13387529

#SPJ1

Refer to the attachment

Ellis will need 78π square feet of paint to paint all the surfaces of the 12 fencepost

The formula for the surface area of a cylinder is:
Surface Area = 2πrh + 2πr^2

Given that the height (h) of each fencepost is 6 feet and the diameter (d) is 1 foot, we can calculate the radius (r) by dividing the diameter by 2:
r = d/2 = 1/2 = 0.5 feet

Now, we can substitute the values into the formula and calculate the surface area of each fencepost:
Surface Area = 2π(0.5)(6) + 2π(0.5)^2
Surface Area = 6π + π/2
Surface Area = (12π + π)/2
Surface Area = 13π/2

Since there are 12 fenceposts in total, we can multiply the surface area of each fencepost by 12:
Total Surface Area = (13π/2) * 12
Total Surface Area = 78π square feet

To know more about diameter visit:

https://brainly.com/question/32968193

#SPJ11

Answer:

EH = 52

Step-by-step explanation:

Using right triangle FGH

Applying Pythagoras' identity

FH² + HG² = FG²

FH² + 80² = 89²

FH² + 6400 = 7921 ( subtract 6400 from both sides )

FH² = 1521 ( take square root of both sides )

FH = \(\sqrt{1521}\) = 39

---------------------------------------------------------------

Using right triangle EFH

Applying Pythagoras' identity

FH² + EH² = EF²

39² + EH² = 65²

1521 + EH² = 4225 ( subtract 1521 from both sides )

EH² = 2704 ( take square root of both sides )

EH = \(\sqrt{2704}\) = 52

the answer is

(x,345)

Answer: A = 55* or 55 degrees

Step-by-step explanation:

The interior angles of a triangle always have a sum of 180 degrees.

75 + 50 + x = 180

Solve for x

FInal answer: 55 degrees

hope i explained it :)

The mean arterial pressure formula is MAP = CO x TPR or MAP = (SBP + 2DBP) / 3.

The mean arterial pressure (MAP) formula is:

MAP = CO x TPR

where:

CO is the cardiac output (how much blood is siphoned by the heart each moment)

TPR is the all-out peripheral resistance (the resistance from the bloodstream in the body's veins)

On the other hand, the mean arterial pressure can also be calculated using the following equation:

MAP = (SBP + 2DBP)/3

where:

SBP is the systolic blood pressure (the highest pressure in the arteries when the heart beats)

DBP is the diastolic blood pressure(the lowest pressure in the arteries when the heart is at rest between beats)

Learn more about mean arterial pressure:

https://brainly.com/question/13209101

#SPJ4

Answer:

110

Step-by-step explanation:

11-6 is the ratio.

In a minute there are 60 seconds.

60/6 is 10.

and then 11x10 is 110.

I hope I could help you!

Answer:

-3 and any real number.

Step-by-step explanation:

the two values of x in 2x+6 are -3 and any real number.

Based on what Mia recorded, we calculate that 152 people are expected to go to the Youth wing on Sunday.

We solve this problem using simple arithmetic methods. According to the data collected by mia,

The number of people who went to the "Youth wing" = 470

The number of people who went to "Social issues" = 413

The number of people who went to "Fiction and Literature" = 350

So, the total number of visitors that the library had on Saturday was,

470+413+350 = 1233

Hence, the proportion of people who went to the "Youth wing", "Social issues" and "Fiction and Literature" are (470/1233), (413/1233), (and 350/1233) respectively.

So, on Sunday the expected number of people who may go to the "Youth wing" should be,

(470/1233)×400

= 152.47 ≈ 152

Learn more about arithmetic problems on

https://brainly.com/question/11559160?referrer=searchResults

#SPJ4

The outcome or result of adding two or more integers is known as the SUM.

The outcome of adding numbers or quantities mathematically is a summation, often known as a sum. A summation always has an even number of terms in it. There may be just two terms, or there may be 100, 1000, or even a million. Some summations include an infinite number of terms.

the sum of two or more numbers, magnitudes, quantities, or specifics as determined by or as though decided by the addition process in mathematics.

The outcome of adding two or more numbers, objects, or things is referred to in mathematics as the sum.

The result or solution we obtain from adding two or more integers is known as the SUM. Addends are the figures that are combined.

\(Simplify $\frac{x}{x+3}+\frac{3}{x+3}+\frac{2}{x+3}: \frac{x+5}{x+3}$Steps$$\frac{x}{x+3}+\frac{3}{x+3}+\frac{2}{x+3}$$Apply the fraction rule: $\frac{a}{c}+\frac{b}{c}=\frac{a+b}{c}$$$=\frac{x+3+2}{x+3}$$Add the numbers: $3+2=5$$$=\frac{x+5}{x+3}$$\)

Therefore, the correct answer is option b) \($=\frac{x+5}{x+3}$\)

To learn more about sum refer to:

https://brainly.com/question/25734188

#SPJ1

Answer:

for real even great Britain cant get this because ya

Step-by-step explanation:

Evaluating the algebraic expressions for the values given, we have:

a. -7

b. -10.

To evaluate and algebraic expression, plug in the value of the variable given and solve accordingly.

a. Given the algebraic expression, xy + 5.

If x = 2, and y = -6, then substitute x = 2 and y = -6 to evaluate the algebraic expression:

xy + 5

(2)(-6) + 5 [substitution]

= -12 + 5

= -7

b. Given the algebraic expression, x/y - 12, if x = 22 and y = 11, then substitute x = 22 and y = 11 into the expression and evaluate:

x/y - 12

22/11 - 12 [substitution]

= 2 - 12

= -10.

Thus, the values of the expressions when evaluated for the given variables are:

a. -7

b. -10.

Learn more about algebraic expressions on:

https://brainly.com/question/28441282

#SPJ1

Answer:

Step-by-step explanation:

The sum of 3 angles in any triangle are equal to 180°

So:

1.) 57 + 81 = 138

2.) 180 - 138 = 42°

Answer: 42°

Answer:

0.05

Step-by-step explanation:

Answer:

18

Step-by-step explanation:

Hello,

In order to solve for x, we need to isolate the variable on one side of the equation.

To do this, we subtract 450 from both sides of the equation, and this will give you:

28.75x = 517.5

As mentioned, we need to isolate x, so we divide both sides by 28.75. This will give the following.

x = 18

Hope this helps!

Answer:

10.3 hours

Step-by-step explanation:

(7+10+5+6+19+8+17)/7

= 72/7

= 10.3

This sampling method is almost certainly biased because the demographic group is dictated by location of the college. In this case the students are all college bound and have like socio economic backgrounds.

What is meant by sampling method?

Sampling is a process in statistical analysis where researchers take a predetermined number of observations from a larger population. The method of sampling depends on the type of analysis being performed, but it may include simple random sampling or systematic sampling.

A true sampling would be a mixed demographic group. A sampling from several like areas: e.g. infront of the student store, infront of the regular store, infront if a food pantry, infront of ... or even better do a blind survey.

Hence , this sampling method is almost certainly biased because the demographic group is dictated by location of the college. In this case the students are all college bound and have like socio economic backgrounds.

Learn more about Sampling method at :

https://brainly.com/question/16587013

#SPJ4

The ANOVA produced 21 degrees of freedom within three treatment conditions with equal sample sizes. Therefore, each sample contains 8 individuals. So, the correct answer is D).

The formula for calculating degrees of freedom within a one-way ANOVA is

dfwithin = (N - k)

where N is the total number of observations (across all groups) and k is the number of groups being compared.

In this case, we know that dfwithin = 21, and since there are three treatment conditions being compared, k = 3

So, we can rearrange the formula to solve for N:

N = dfwithin + k

N = 21 + 3

N = 24

Since we are told that the sample sizes are all the same, we can divide the total number of observations by the number of groups to get the size of each sample

n = N/k

n = 24/3

n = 8

Therefore, there are 8 individuals in each sample. The answer is (d) 8.

To know more about sample sizes:

https://brainly.com/question/30885988

#SPJ4

A document-term matrix is a data set that has asymmetric discrete or asymmetric continuous features because it represents a collection of documents.

Each document is represented by a row in the matrix. The matrix is populated with numerical values that represent the frequency of each term in each document.

The features in a document-term matrix are asymmetric because the number of terms (columns) in the matrix can be very large, while the number of documents (rows) is typically much smaller.

This results in a sparse matrix, with many cells having a value of zero, which means that the majority of the terms do not appear in most of the documents.

Additionally, the terms in the matrix can be discrete, as they represent specific words or phrases, but the frequency values can be continuous, as they represent the number of occurrences of each term in each document.

In conclusion, a document-term matrix is an example of a data set that has asymmetric discrete or asymmetric continuous features because it represents a collection of documents, where each document is represented by a row in the matrix.

Each column represents a specific term or word, and the number of terms (columns) in the matrix can be very large, while the number of documents (rows) is typically much smaller.

The terms in the matrix can be discrete, as they represent specific words or phrases, but the frequency values can be continuous, as they represent the number of occurrences of each term in each document.

Learn more about document-term matrix at

https://brainly.com/question/13438146

#SPJ4

Answer: Reject \(H_0\) if the confidence interval does not contain the value of the hypothesized mean \(\mu_0\).

Step-by-step explanation:

In the case of Confidence Intervals and Two-Tailed Hypothesis Tests,

Null hypothesis : \(H_0:\mu=\mu_0\)  [There is no change in mean.]

Alternative hypothesis: \(H_a:\mu\neq\mu_0\)  [There is some difference.]

Since confidence intervals contain the true population parameter ( mean).

So, Decision rule states that

Answer:

5400= 150y + 350x

Step-by-step explanation:

Given:

The  monthly phone cost C can be represented by this equation:

\(C=12+a\cdot m\)

where, a is the additional  charge per minute, and m is the number of minutes used.

To find:

The equation can be used to find the number of minutes a customer used if we know and a and C.

Solution:

We have,

\(C=12+a\cdot m\)

We need to isolate m on one side.

Subtract 12 from both sides.

\(C-12=a\cdot m\)

Divide both sides by a.

\(\dfrac{C-12}{a}=\dfrac{a\cdot m}{a}\)

\(\dfrac{C-12}{a}=m\)

\(m=\dfrac{C-12}{a}\)

The options are not in proper format.

Therefore, the required equation is \(m=\dfrac{C-12}{a}\).

Answer:

26

Step-by-step explanation:

because it’s a 90 degree angle so 90 - 64 = 26

Answer:

It will take 16 cups to empty the sink with the blue cup and it will take 4 cups to empty the sink with the green cup.

I got this answer by doing the formula for a cylinder

Blue cup              Green cup

(π)(2^2)(8)         (π)(4^2)(8)

= 32π                  =128π

Then i divided them both by 512 and got the answer for the number of cupfuls it will take to empty the sink  

To empty the sink 16 cups it will take for the blue one and 4 cups it will take for the green cup.

It is given that Anthony's sink is shaped like a half-sphere, and it has a volume of 512π cubic inches.

It is required to find how many cupfuls of water to empty the sink.

It is defined as a three-dimensional space enclosed by an object or thing.

We have:

Sink volume V = 512π cubic inches

The blue cup diameter d(b) = 4 in or radius r(b) = 2 in          

and height h(b) = 8 in    

The green cup diameter d(g) = 8 in or radius r(g) = 4 in

and height h(g) = 8 in

The cup is the shape of a cylinder we know the volume of a cylinder is given by:

\(V = \pi r^2 h\)

Volume for the blue cup:

\(\rm v(b) = \pi\times 2^2 \times 8\)    [ r(b) = 2 in and h(b) = 8 in]

v(b) = 32π cubic inches

Volume for the green cup:

\(\rm v(g) = \pi\times 4^2 \times 8\)   [r(g) = 4 in and h(g) = 8 in]

v(g) = 128π cubic inches

For a number of blue cups:

\(=\frac{512\pi}{32\pi}\) ⇒ 16

For a number of green cups:

\(=\frac{512\pi}{128\pi}\) ⇒ 4

Thus, to empty the sink 16 cups it will take for the blue one and 4 cups it will take for the green cup.

Learn more about the volume here:

https://brainly.com/question/16788902

Based on the given data, the probability of rolling a 4 on the next roll of this die is 0.3 or 30%.

It is used to predict and estimate the likelihood of future events and is calculated by dividing the number of favorable outcomes by the total number of possible outcomes.

The probability of rolling next is a 4:

The total number of times the die was rolled is:

⇒ 8 + 4 + 3 + 9 + 2 + 4 = 30

The number of times the die landed on 4 is 9.

Then, the probability of rolling next a 4 is:

⇒ 9/30 = 3/10

⇒ 9/30 = 0.3

Therefore, based on the given data, the probability of rolling a 4 on the next roll of this die is 0.3 or 30%.

To know more about probability, visit:

https://brainly.com/question/13604758

#SPJ1

If x is the largest of the three consecutive integers, then the three consecutive integers can be represented as x-1, x, and x+1.

The sum of these three consecutive integers is:

(x-1) + x + (x+1)

Simplifying the expression, we get:

3x

Therefore, the expression in terms of the given variables that represents the sum of three consecutive integers when x is the largest is 3x.

To know more about Expression visit-

brainly.com/question/14083225

#SPJ11

Answer:

D

Step-by-step explanation:

took the test

To eliminate the y-terms and solve for x in the fewest steps , the first equation should be multiplied by 9 and the second equation by -4.

The equation is as follows:

5x - 4y = 28

3x - 9y = 30

To eliminate the y-terms and solve for x can be done as follows:

Multiply the equation(i) by 9

45x - 36y = 252

Multiply the equation(ii) by -4

Therefore,

-12x + 36y = -120

45x - 36y = 252

-12x + 36y = -120

y will be eliminated by adding the equations.

Therefore, to eliminate the y-terms and solve for x in the fewest steps , the first equation should be multiplied by 9 and the second equation by -4.

learn more on system of linear equation here: https://brainly.com/question/1348604?referrer=searchResults