A certain county has a population of 34,237 people. The county hospital is interested in estimating the number of people in the county with​ blood-type A−. To do​ this, they test blood samples from 245 patients. Out of this​ group, 12 have​ blood-type A−. Use this sample to estimate the number of people in the county with​ blood-type A−.

Answer:

C is the answer.

Exp :

(-2.1x+4.9x)+(3.7+5)

=2.8x+8.7

Answer:

C.)  2.8x + 8.7

Step-by-step explanation:

Answer:

answer B

Step-by-step explanation:

I

there's 3 feet and 9 inches of paper on timothy's side

alondra cuts the zame amount of strips at 106.68m

there are 2.54 centimeters in one inch.

there are 12 inches in a foot

12 ×3 is 36 plus 9 is 45 inches

now, divide 106.68 by 2.54 to get 42 inches (we have 3 left over

if we subtract 220 by 106.68 we get 113.12

2.54 centimeters equals 1 inch, divide 113.12 to get 44.6

convert this to feet and we get 3 feet and 8 inches

3 feet 8 onches plus 3 feet 10 inches is 7.7 (by rounding)

(sorry that my work is all over the place i have a bad habit)

Answer:

the answer is b

Answer:

9a^4-a^2b-8b^2

Step-by-step explanation:

multiply parentheses

calculate

collect like terms

Answer:

it says download docx so download it first and start typing

Step-by-step explanation:

Answer:

Step-by-step explanation:

"Kristina sold 8 pumpkins for $3.50 each, 6 for $8.00 each, and 15 for $1.00 each. She receives $0.25 for each pumpkin sold plus a $10.00 bonus if her sales total $95.00 or more. How much did she receive?"

Given data

The total number of pumpkin is 8+6+15= 29 pumpkin

total cost of pumpkin=

8*3.5=$28

6*8=$48

15*1=$15

total is $28+$48+$15= $91

the total amount sold is not up to $95, so she will not receive the $10 bonus

But she will receive

0.25*29=$7.25

Answer:

I think the answer is The researcher manipulates at least one independent variable. Hope this helps.

Step-by-step explanation:

The BEST statement describes is that "The researcher manipulates at least one independent variable."

Even though everything can be almost always related to its reason, when we talk about two related things, there might happen that one of those things is dependent on other.

The variables who take their values based on some other variables' values are called dependent variables.

Given that researcher studies the rate of progress of a chemical reaction.

The researcher fixes the temperature and pressure, varies the amount of catalyst used over a range of quantities, since we know that If a variable is taking its values independently of any visible direct cause, then that variable is called independent variable.

Therefore, the BEST statement describes why the investigation is an experimental study;

"The researcher manipulates at least one independent variable."

Learn more about independent variable;

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Answer: Cost of each item bought by Spongebob = $2.5

Cost of each item bought by Patrick = $1

Step-by-step explanation:

Let x be the cost of each item bought by Spongebob.

Then, cost of each item bought by Patrick = x- 1.50

Then, cost of 3 items bought by Spongebob =  3x

Cost of 5 items bought by  Patrick = 5(x-1.50)

If both Spongebob and Patrick paid the same amount of money then

[tex]3x= 5(x-1.5)\\\\\Rightarrow\ 3x=5x-1.5\times5\\\\\Rightarrow\ 3x=5x-7.5\\\\\Rightarrow\ 5x-2x=7.5\\\\\Rightarrow\ 3x=7.5\\\\\Rightarrow\ x=\dfrac{7.5}{3}\\\\\Rightarrow\ x=2.5[/tex]

Cost of each item bought by Spongebob = $2.5

Cost of each item bought by Patrick = $2.5-$1.5=$1

Hence, Cost of each item bought by Spongebob = $2.5

Cost of each item bought by Patrick = $1

Answer: Cost of each item bought by Spongebob = $2.5

Cost of each item bought by Patrick = $1

Step-by-step explanation:

Let x be the cost of each item bought by Spongebob.

Then, cost of each item bought by Patrick = x- 1.50

Then, cost of 3 items bought by Spongebob =  3x

Cost of 5 items bought by  Patrick = 5(x-1.50)

If both Spongebob and Patrick paid the same amount of money then

Cost of each item bought by Spongebob = $2.5

Cost of each item bought by Patrick = $2.5-$1.5=$1

Hence, Cost of each item bought by Spongebob = $2.5

Cost of each item bought by Patrick = $1

Answer:

I believe it is (7, 0)

Step-by-step explanation:

I hope this is right..

Answer:

use slope intercept form to find the x intercept

y = Mx +b

Step-by-step explanation:

x+4y=7

4y= -x+7

y= -1/4x +7/4

so when this line is on the x intercept.. then y =0  soooo plug in zero for y and solve

0= -1/4x + 7/4

-7/4 = -1/4x

7 = x

Answer:

∠ LHK = 101°

Step-by-step explanation:

The 2 angles on a straight line are supplementary, thus

∠ LHK = 180° - 79° = 101°

The given parameters are illustrations of angles on a straight line. The measure of [tex]\angle LHK[/tex] is [tex]101^o[/tex]

Given that:

[tex]\angle GHL = 79^o[/tex]

Using the angle on a straight line theorem, we have:

[tex]\angle GHL + \angle LHK =180^o[/tex] ---- angle on a straight line is 180

Substitute [tex]\angle GHL = 79^o[/tex]

[tex]79^o + \angle LHK = 180^o[/tex]

Collect like terms

[tex]\angle LHK = 180^o - 79^o[/tex]

[tex]\angle LHK = 101^o[/tex]

Hence, the measure of [tex]\angle LHK[/tex] is [tex]101^o[/tex]

Read more about angle on a straight line at:

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Answer:

C

Step-by-step explanation:

pls mark brainliest :)

Answer:

12:7

Step-by-step explanation:

Total number of kids = 76

Total number of kids that ordered chicken nuggets = 28

Total number of kids that did not order chicken nuggets = 76 - 28

= 48

The ratio of kids who did not order chicken nuggets to the number of kids who did is:

= 48 : 28

In simplest form :

= 12:7

Answer:

21.21

Step-by-step explanation:

=21.21+13.22+(-13.22)

=21.21+0

=21.21

Answer: 47.65

Step-by-step explanation:

Hope this helps:)

Answer: The awnser is 5 jeans and 8 shirts

Answer:

                               50

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

Recall the slope-intercept form of a line:

y = mx + b

slope -2/7 means m = -2/7

y = -2/7x + b

Intercept at (0, -1)

x = 0 and y = -1.

Hence, let's plug it back into the equation we made earlier (y = -2/7x + b)

(-1) = -2/7(0) + b

-1 = b

b must be -1

y = -2/7x -1

Answer:

115 Degrees

Step-by-step explanation:

Isosceles Triangles have two congruent base angles so if one is 50 degrees, 180-50=130 degrees the base angles must be 130/2=65 degrees each. ACB is 65 degrees and makes a line with BCE, so their sum must be 180 degrees. 180-65= 115 Degrees= BCE

Answer:

We dont see the prices you forgot to attach them

Step-by-step explanation:

Answer:

c

Step-by-step explanation:

because if it leaks 2 ml pe second that means we have to find out how much it leaks in 60 seconds so 2 x 60 = 120 but all the answers have the unit L beside them, not ml so 1000 ml is 1 L so that means that 120ml in L would not be a whole number so it has to be a decimal so c ( but you should still double-check just in case)

hope this helps : )

Answer: I am pretty sure it is add -4 to both sides

Step-by-step explanation:

Answer:

Step-by-step explanation:

-5c+6=4

-6     -6 to get -5c by itself

-5c=4-6

-5c=-2

Divide -5c to -2

c=0.4

Answer:

Step-by-step explanation:

first you have to make this an improper fraction my multiplying -3 by 11 then add the product of that to 6 and put it all over 11

[tex]-3\frac{6}{11}[/tex] → [tex]-\frac{39}{11}[/tex]

once you get this you have to do the reciprocal of this to get them to equal 1

[tex]-\frac{39}{11}[/tex] → [tex]-\frac{11}{39}[/tex]

then multiply the number by the reciprocal

[tex]-\frac{39}{11}* -\frac{11}{39}=\frac{429}{429}=1[/tex]

Step 1: Use the slope formula y₂ - y₁/x₂ - x₁ to find the slope.

[tex]\frac{0 - (-4)}{-3 - 3}\\ \\\frac{4}{-6} = -\frac{2}{3}[/tex]

Step 2: Plug the slope we found and one point into the slope-intercept formula, y = mx + b.

[tex]y = mx + b\\\\0 = -\frac{2}{3}(6) + b\\\\0 = -4 + b\\\\4 = b[/tex]

Step 3: Put it all together.

[tex]y = -\frac{2}{3}x + 4[/tex]

Answer:

A

Step-by-step explanation:

plz give brainliest

Answer:

Domain: {x|-5, -3, -2, -1, 1, 3}

Range: {y|-5, 0, 1, 2, 3}

Step-by-step explanation:

The domain is all x values:

Domain: {x|-5, -3, -2, -1, 1, 3}

The range is all y values:

Range: {y|-5, 0, 1, 2, 3}

Answer: Jaime is James

Step-by-step explanation: Remember that the original exponential formula was y = abx. You will notice that in these new growth and decay functions, the b value (growth factor) has been replaced either by (1 + r) or by (1 - r). The growth "rate" (r) is determined as b = 1 + r.

Answer:

For every gallon of gas added to the tank, the buyer is charged $2.35

The constant of proportionality of the given equation y = 2.35x will be 2.35.

There are many different ways to define an equation. The definition of an equation in algebra is a mathematical statement that demonstrates the equality of 2 mathematical expressions.

More than one variable may be present inside a linear equation. An equation is said to be linear if the maximum power of the variable is consistently unity.

Let's x ∝ y

Then x = ky where k will be constant of proportional.

k = x/y which means when two variables are divided which were in proportion it will create a constant proportional.

So,

y /x = 2.35 will be constant of propotional.

Hence "The constant of proportionality of the given equation y = 2.35x will be 2.35".

For more about the equation,

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Answer:

what do you need help with?

What do you need help with?