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2 years ago

The ratio of magazines to books in the library at Grady’s school is 2 to 9. which of these is an equivalent ratio?

Mathematics

1 answer:

antiseptic1488 [7]2 years ago

7 0

Answer: B

Step-by-step explanation:

2/9 = 2(5)/9(5) = 10/45

You can multiply the numerator and the denominator by the same and the fraction will always be equivalent.

2 to 9 is equivalent to 10 to 45

You might be interested in

Open the cpt manual to the page that contains code 40490. what section of the cpt coding manual is this code listed in?

klasskru [66]

The section of the CPT coding manual is the code 40490 is listed in is "digestive system."

<h3>What is CPT codes?</h3>

CPT is the language used by providers and payers when billing medical procedures and services for reimbursement.

Some key features regarding the CPT codes are-

CPT or Current Procedural Terminology, is a set of medical codes used to describe the procedures and services performed by physicians, allied health care professionals, provided by trained practitioners, healthcare facilities, outpatient facilities, and laboratories.
CPT codes, in particular, are used to notify services and procedures to both federal and private payers for repayment of rendered healthcare services.
CPT codes were developed by the American Medical Association (AMA) in 1966 to standardize reporting of medical, surgery, and diagnosis and treatment procedures and services performed in both inpatient and outpatient settings.
Each CPT system defines a written description of a process or service, removing the need for the patient's subjective interpretation of what was provided.

To know more about the CPT codes, here

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8 0

1 year ago

Brainliest for correct answer

kherson [118]

Answer:

a =b

b=d

Step-by-step explanation:

alt angle

corresponding angle

5 0

3 years ago

Which system of equations could be used to determine how many of each coin you have

kirza4 [7]

<h3>Answer: Choice A</h3>

0.10d + 0.05n = 2.25

d = 2n

================================================

Explanation:

n = number of nickels

d = number of dimes

we have twice as many dimes as nickels, so we could have something like 18 dimes and 9 nickels. Algebraically we would write d = 18 and n = 9. The equation that fits this is d = 2n. The answer is between A and B at this point.

We rule out choice B since the 0.05d is incorrect. It should be 0.10d to represent the total value of all the dimes.

Choice A is correct

d = number of dimes

0.10d = value of all the dimes in dollars

n = number of nickels

0.05n = value of all the nickels in dollars

0.10d + 0.05n = total value from both coins combined

2.25 = total value from both coins combined

0.10d + 0.05n = 2.25

8 0

2 years ago

A group of 54 college students from a certain liberal arts college were randomly sampled and asked about the number of alcoholic

Ket [755]

Answer:

$t=\frac{5.25-4.73}{\frac{3.98}{\sqrt{54}}}=0.9601$

P-value

First we find the degrees of freedom given by:

$df = n-1= 54-1=53$

Since is a two-sided test the p value would be:

$p_v =2*P(t_{53}>0.9601)=0.3414$

Step-by-step explanation:

Data given and notation

$\bar X=5.25$ represent the sample mean

$s=3.98$ represent the sample standard deviation

$n=54$ sample size

$\mu_o =4.73$ represent the value that we want to test

$\alpha$ represent the significance level for the hypothesis test.

z would represent the statistic (variable of interest)

$p_v$ represent the p value for the test (variable of interest)

State the null and alternative hypotheses.

We need to conduct a hypothesis in order to check if the mean differs from 4.73, the system of hypothesis would be:

Null hypothesis: $\mu =4.73$

Alternative hypothesis: $\mu \neq 4.73$

Since we know don't the population deviation, is better apply a t test to compare the actual mean to the reference value, and the statistic is given by:

$t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}$ (1)

t-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".

Calculate the statistic

We can replace in formula (1) the info given like this:

$t=\frac{5.25-4.73}{\frac{3.98}{\sqrt{54}}}=0.9601$

P-value

First we find the degrees of freedom given by:

$df = n-1= 54-1=53$

Since is a two-sided test the p value would be:

$p_v =2*P(t_{53}>0.9601)=0.3414$

7 0

3 years ago

Considere the diagram below determine DHG

Veseljchak [2.6K]

9514 1404 393

Answer:

A) ∠DHG = 96°

B) arc EF = 134°

Step-by-step explanation:

<u>Part A</u>:

As you have shown in your work, angle DHG is supplementary to given angle FHG:

∠DHG = 180° -∠FHG

∠DHG = 180° -84°

∠DHG = 96°

<u>Part B</u>:

∠DHG is half the sum of arcs EF and DG.

96° = (1/2)(arc EF + 58°) . . . . . fill in known values

192° -58° = arc EF . . . . . . . . . . multiply by 2, subtract 58°

arc EF = 134°

6 0

3 years ago