A medical researcher needs 5 people to test the effectiveness of an experimental drug. If 14 people have volunteered for the test, in how many
ways can 5 people be selected?

Answers

Answer 1

byAnswer: doing the trials/tests

Step-by-step explanation: Learn With Brainly


Related Questions

Can someone help me answer this question?

Answers

Y is 360 to 90 cms of X

A package of 6 pencils costs $3. The cost per pencil is $.

Answers

Answer:

Each pencil costs 50 cents

Step-by-step explanation:

Step 1:  Determine the price per unit

(Price of Items) / (Amount of items)

($3) / (6)

$0.5

Answer:  Each pencil costs 50 cents

Each pencil is 0.5 cents because 3 divided by 6 is 0.5

Vectors U and V are shown on the graph (The graph with letters U and V)


Which of the following vectors represents u-v

Answers

Answer:

  see attached

Step-by-step explanation:

The vector difference u -v can be represented on a vector diagram by the sum u +(-v), where -v is a vector the same length as v, but in the opposite direction.

__

This sum is shown in the attachment.

Write an equation for a line that passes through points (-6, 1), (1, 4), (5, 6)

Answers

Answer:

y= .45x + 11/3

Step-by-step explanation:

Those points are not on the same line but you can get pretty close with

y= .45x + 11/3

tell whether the set or ordered pairs (1,6), (2,9), (3,12), (4,15) satisfies a linear function

Answers

Since  the resulting function has a leading degree of 1, hence the set or ordered pairs (1,6), (2,9), (3,12), (4,15) satisfies a linear function

How to find a linear function?

The standard equation of a linear function is y = mx + b

where:

m is the slopee

b is the y-intercept

Using the coordinate point (1, 6) and (2, 9)

Find the slope

Slope = 9-6/2-1
Slope = 3/1

Slope = 3

For the y-intercept

Recall that y = mx + b

9 = 3(2) + b

b = 3

Determine the equation

y = 3x + 3

Since the resulting function has a leading degree of 1, hence the set or ordered pairs (1,6), (2,9), (3,12), (4,15) satisfies a linear function.

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equivalent expression for 6(a+b)

Answers

Answer:

6a + 6b

Step-by-step explanation:

Use  Distributive property: a( b +c) =(a *b) +(a*c)

6(a + b) = 6*a + 6*b

            = 6a+ 6b

could yall help me on this pls!!

Answers

Answer:

Step-by-step explanation:

Remark

Make a very crude diagram of what these points look like. You will find that

(-8,6) is above (-8,3) (-3,6) is above (-3,3)

That gives you a hint about how to find the Length and width.

Givens

From (-8,-3) and (-3, 3) L = -8 - -3 = - 5

From (-8,6) and  (-8,3) w = 6 - 3 = 3

Solution

The length cannot be minus 5. The way to get around that is to call it and absolute value of (-5) which is 5

So the area = L*W

area = 5 *3

area = 15

Answer

Area = 15

The difference 11/14 - 2/10

Answers

Answer:

11/14-2/10=41/70=0.58

What is the right one

Answers

Answer:

Lower Left!!

Step-by-step explanation:

Because Gina doesn't have the total price, that makes it the unknown or "?" answer, with the price before tax obviously $300.00, and the tax being 8%. Therefore, it's the lower left option.

ohn drove from Miami to Atlanta, and the trip took him a total of 10 hours.
For 6 hours John’s average speed was 73 mph. His average speed on the remainder of the
trip was 67 mph. What was his average speed on the entire trip?
a) 70.8 mph
b) 70.6 mph
c) 69.4 mph
d) 68.2 mph

Answers

Answer:

b) 70.6

Step-by-step explanation:

To calculate average you need to add up all the numbers and divide by the quantity of numbers. They are calculating with mph, with ten hours, so there will be ten numbers. First you do 73 x 6 (6 because of 6 hours of 73 mph) which is 438. Then you do 67 x 4 which is 268. you add it up, then find a total of 706. Then you divide it by ten to find the answer 70.6

Jonas started reading books to
kindergarten students at 3:20 P.M.
He finished reading at 4:30 P.M. How
long did he spend reading to the
kindergarten students?
A 60 minutes
B 70 minutes
C 80 minutes
D 90 minutes

Answers

He spent B. 70min reading to the kindergarten students

Can somebody help me with my homework, I don’t get it, and I don’t know if I am correct

On Saturday, the school band marched from the school to the stadium. After the game, the band marched back to the school. How many blocks did the band match on Saturday?

Catelyn lives halfway between the park and the school. How far does she live from each?

Answers

Answer:

first one is correct second one is 6 and third one is 2 and a half

Answer:

If one counts the blocks on the graph from the school to the stadium and back, there are three blocks one way and three blocks going back.

Altogether 6 blocks.

If Catelyn lives halfway between the park and the school, the amount of blocks is 5.

She lives halfway between.  Hence, what is 5 divided by 2?

2.5 or 2 1/2 blocks.

Step-by-step explanation:

a trader buys 200 oranges for 60 kobo and sells them at 8 for 12 kobo.what is his gain​

Answers

Answer:

he gained 188 kobo for selling 200 oranges or 192 if the trader selled the oranges for 8 kobo

Step-by-step explanation:

Anticipated consumer demand in a restaurant or free-range steaks next month can be modeled by a normal random variable with mean 1100 pounds and standard deviation 80 pounds. The probability is 0.015 that demand will be more than how many pounds?

1273.6

1250.53

926.4

946.8


Please guys can you help me in this please if you don’t know please don’t send for link or something for that

Answers

926.4 is the right answer i alr did it abs it’s the only logic answer

3×+4y÷2 for x=7 and y=10


PLEASE HELPPP​

Answers

Answer:

41

Step-by-step explanation:

(3*7)+(4*10)/2

(21)+(40)/2

Bidmas means you do 40/2 first

21+20=41


A bicycle store costs $2700 per month to operate. The store pays an average of $40 per bike. The average selling price of each bicycle is $70. How many bicycles must the store sell each month to
The store must set bicycles each month to break even

Answers

90 bikes per month After doing all the math
Your welcome

The volume of a spherical balloon with radius 2.8 cm is about 92 cm^3. Estimate the volume of a similar balloon with radius 8.4 cm.

Answers

Step-by-step explanation:

it means the shape of the balloon is close to a sphere.

the volume of a sphere is

4×pi×r³

so, it bases on r³.

that means any scaling factor f between 2 similar balloons for the radius has to be multiplied in 3 times (once for every "r").

in our case we know

8.4 = 2.8 × f

f = 8.4 / 2.8 = 3

so,

large volume = small volume × f×f×f =

= small volume × f³ = 92×3³ = 92×27 =

= 2,484 cm³

The formula below is used to convert a temperature in degrees Fahrenheit, F, to a
temperature in degrees Celsius, C.
c=2 / IF
(F-32)
-
What is the temperature, in degrees Celsius, that is equivalent to a temperature of 40°F?
B
А 14-с
B 95C
C 4400
D 222
С

Answers

Answer:

C.4400

Step-by-step explanation:

The formula to convert Fahrenheit to Celsius (or Vice Versa) is,

F

=

(

9

C

5

)

+

32

Here C is the Temperature in Celsius Degrees and F is temperature in Fahrenheit Degrees.

Time for substitution

( 9C)

40 = ______ +32

5

I have put 40 instead of F because the value I have in hand is temperature in Farhenheit.

=> (40 -32) 5

________ = C

9

Then take all the constant term to one side and keep the variable on other side.

C = 4.4444444

C = 4400

Math 10 CP1 CR
What are the solutions to the equation 3(x – 4)(x + 5) = 0?
O x = -4 or x = 5
O x = 3, x = 4, or x = -5
O x = 3, x=-4, or x = 5
O x = 4 or x = -5

Answers

the answer is x=4 or x=-5

The solutions of the given equation are x = 4 or x = -5.

What is solution of an equation?

The solution of a linear equation is defined as the points, in which the lines represent the intersection of two linear equations.

Given is an equation, 3(x – 4)(x + 5) = 0 we need to find the solution of the equation,

So, we can see that the equation is a quadratic equation, so it will have two solutions,

The equation is already in factored form,

So,

3(x – 4)(x + 5) = 0

Solution,

x-4 = 0

x = 4

x+5 = 0

x = -5

Hence, the solutions of the given equation are x = 4 or x = -5.

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I need help on number 9

Answers

Answer:

3. -1/3  ± 2i√5 / 3

Step-by-step explanation:

3x^2 + 2x = -7

Divide through by 3:

x^2 + 2/3 x = -7/3

Completing the square:

x^2 + 2/3 x + (1/3)^2 = -7/3 + (1/3)^2

(x + 1/3)^2 = -7/3 + 1/9

(x + 1/3)^2 = -20/9

x + 1/3 =  ±√(-20) / 3

x + 1/3 = ± 2√-5/3

x  = -1/3  ± 2i√5 / 3

Can somebody help me round 376.77 to the nearest whole. With steps (guidance)
It would totally help me with the state exam tomorrow!

Answers

The answer is 377

6.77 is close to 7 than 6 so you round up. That will get you to 7. So it will be 377

Answer:

To round 376.77 to the nearest dollar consider the tenths’ value of 376.77, which is 7 and equal or more than 5. Therefore, we have to round the amount up: the dollar part of 376.77, 376, increases by 1 to 377, and the decimal point and all digits (.77) are removed.

Step-by-step explanation:

anyone know the answer?

Answers

Answer:

31.53 cm

[tex] \: [/tex]

Step-by-step explanation:

It is given that, The circumference of a circle is 198 cm and we are to find the radius of the circle.

[tex] \: [/tex]

To find the radius of the circle we must know this formula first :

[tex]\\{ \longrightarrow \qquad{ \underline {\boxed{ \pmb{ \mathfrak{ \: 2 \pi r \: =Circumference_{(circle)}}}}}}} \: \: \bigstar \\ \\ [/tex]

Now substituting the values in the formula :

[tex]\\{ \longrightarrow \qquad{ {{ \tt{ \: 2 \times 3.14 \times r \: =198}}}}} \\ \\ [/tex]

[tex]{ \longrightarrow \qquad{ {{ \tt{ \: 6.28 \times r \: =198}}}}} \\ \\ [/tex]

[tex]{ \longrightarrow \qquad{ {{ \tt{ r \: = \frac{198}{6.28} }}}}} \\ \\ [/tex]

[tex]{ \longrightarrow \qquad{ \pmb {{ \frak{ r \: = 31.528 }}}}} \\ \\ [/tex]

Therefore,

The radius of the circle is 31.53 cm (Rounded to nearest hundredth)

If f ( x ) is a linear function, f ( − 5 ) = − 4 , and f ( 1 ) = − 1 , find an equation for f ( x )

Answers

Make it like an equation then solve it

What is the radius of a circle that has a circumference of 3.14 meters?​

Answers

given:

circumference= 3.14m

to find:

the radius of the circle

solution:

Circumference of a circle = 2πr

Given, circumference = 3.14 meters

Therefore:

2πr = Circumference of a circle

2πr = 3.14

2 × 3.14r = 3.14,[Putting the value of pi (π) = 3.14]

6.28r = 3.14

r = 3.14/6.28

r = 0.5

given that (4,-8) is on the graph of f(x), find the corresponding point for the function. f(x+3)

Answers

Answer:

i believe it's (1,-8)

Step-by-step explanation:

you subtract the "+3," since it's really the opposite, from 4 to get 1. The -8 stays the same since the transformation doesn't affect the y's.

I'm stuck on this one! Please help

Answers

Answer:

The answer is 12

Step-by-step explanation:

Answer: 12

Step-by-step explanation:

Option B will be the best option.

I will give you 50 points and brainliest if you can answer this question

Use the equation 124⋅15=1,860 and what you know about fractions, decimals, and place value to determine where to place the decimal point when you compute (1.24)⋅(0.15).

1. Select the correct decimal location below.

2. Explain how you know

Answers

Answer:

The decimal stays in the same place and the answer is 0.186

Step-by-step explanation:

Evaluate 9x^2y^−2 for x = –3 and y = 2.

a)9(−6)^0
b)1/144
c)20 1/4
d)324

Answers

Answer:

c)20 1/4

Step-by-step explanation:

[tex]9x^{2}y^{-2}[/tex]

If We replace x by -3 and y by 2 we get  :

[tex]9\left( -3\right)^{2} \left( 2\right)^{-2}[/tex]

Or we have :

[tex]\left( -3\right)^{2} =9\ \text{and} \ \left( 2\right)^{-2} =\frac{1}{2^{2}} =\frac{1}{4}[/tex]

then

[tex]9\left( -3\right)^{2} \left( 2\right)^{-2}=9\times9\times\frac{1}{4} = \frac{81}{4}[/tex]

on the other hand :

[tex]\frac{81}{4} =\frac{80+1}{4} =\frac{80}{4} +\frac{1}{4} =20+\frac{1}{4}=20\frac{1}{4}[/tex]

Sylvia applies two transformations to WXYZ shown below on the coordinate grid. She applies a reflection across the y-axis and then a rotation of 180° counterclockwise about the origin.


What are the coordinates of the final vertices of the two transformations?

coordinates: ________________________

Answers

The coordinates of the final vertices of the two transformations are W" = (-4,1), X" = (-2,1), Y" = (-2,4) and Z" = (-3,2)

How to determine the final vertices?

The coordinates of the polygon WXYZ are:

W = (-4,-1)

X = (-2,-1)

Y = (-2,-4)

Z = (-3,-2)

When reflected across the y-axis, the rule of transformation is:

(x,y) -> (-x,y)

So, we have:

W' = (4,-1)

X' = (2,-1)

Y' = (2,-4)

Z' = (3,-2)

When rotated by 180 degrees, the rule of transformation is:

(x,y) -> (-x,-y)

So, we have:

W" = (-4,1)

X" = (-2,1)

Y" = (-2,4)

Z" = (-3,2)

Hence, the coordinates of the final vertices of the two transformations are W" = (-4,1), X" = (-2,1), Y" = (-2,4) and Z" = (-3,2)

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Find the area of the rectangle with length 27 inches and width 40 inches. (1 point)
67 in. 2
134 in. 2
1,080 in. 2
10,800 in. 2

Answers

Answer:

1,080 square inches

Step-by-step explanation:

27 inches * 40 inches = 1,080 square inches

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