What is the Ka of a solution of 0.025M formic acid, if the pH 10 points
is 2.60? Answers
Ka = 0.025
Ka = 2.5x10^-4
Ka = 2.8x10^-4
Ka = 2.8x10^-2

Answer:

Less than or equal to 0

Step-by-step explanation:

You selected the correct answer.

Hope this helps

Answer:

314.16

Step-by-step explanation:

Area=πr2

d=2r

Solving for Area

A=1

4πd2=1

4·π·202≈314.15927

Answer:

tangent is a line passing a circle and tuching it at just 1 point

Step-by-step explanation:

Answer:

Tank A

Step-by-step explanation:

If the lines goes accross each tank the first tank would fill up first then the next one and it keeps going.

Hope this helps!

Answer:

Tank A

Step-by-step explanation:

The tank that fills fastest will have the steepest line graphed. The steepest line is the graph for Tank A. Tank A fills the most in the least amount of time, so this is the answer.

I hope this helps :) Good luck ^^

Answer:

[tex]4\frac{1}{8}[/tex] pounds

Step-by-step explanation:

1 pound = 16 ounces

[tex]\frac{66}{16} =\frac{y}{1}[/tex]

16 × y = 66 × 1

16y = 66

16y ÷ 16 = 66 ÷ 16

[tex]y=4\frac{1}{8}[/tex]

Answer: 4 1/8

Step-by-step explanation:

16 oz in 1 lb

64 -> 4 lb

2/16 = 1/8

4 1/8 lb

Answer:

irrational

hope this helps

have a good day :)

Step-by-step explanation:

Answer:

irrational.

Step-by-step explanation:

Answer: [tex]\dfrac{12}{5}\ km^2[/tex]

Step-by-step explanation:

Given

The area of land is [tex]6\frac{2}{5}\ km^2[/tex]

Daud divide the land into 8 equal plots

So, the area of a single small plot is  

[tex]\Rightarrow \dfrac{\dfrac{30+2}{5}}{8}\\\\\Rightarrow \dfrac{32}{5\times 8}\\\\\Rightarrow \dfrac{4}{5}\ km^2[/tex]

The area of three such plots

[tex]\Rightarrow 3\times \dfrac{4}{5}\\\\\Rightarrow \dfrac{12}{5}\ km^2[/tex]

Answer:

wait what does that mean I don't get it

have a good day :)

Step-by-step explanation:

Answer:

D is correct option.

Step-by-step explanation:

g(x) =-3 root x-1.

Answer:

I got 1 (but i was using math.way so im so sorry if its wrong)

Step-by-step explanation:

also i love your pf.p

Answer:

2+(3-2*2)*1

2+(3-4)*1

2+(-1)*1

2-1

1 answer

Answer:

Yellow White And Orange I pretty Sure!! Im sorry if this is not what you want! I can change it if so.

Step-by-step explanation:

Answer:

[tex] RT = \frac{ \sin(60 \degree) }{ \sqrt{3} } \\ RT = 0.5 \\ x = RT \tan(45 \degree) \\ x = 0.5 \times \tan(45 \degree) \\ x = 0.5 \: units[/tex]

Answer:

the first angle is 180 - (90 + 60) = 30

second angle is 180 - (45 + 90) = 45

30 + 45 = 75

3\/- 75 = 4.217163327 units

Answer:

32,760

Step-by-step explanation:

Given :

Since the order matters, we use the permutation relation :

Recall :

nPr = n! ÷ (n - r)!

n = 15 ; r = 4

15P4 = 15! ÷ (15 - 4)!

15P4 = 15! ÷ 11!

15P4 = (15 * 14 * 13 * 12)

15P4 = 32,760

Answer:

its the one with 2000$ in it

Step-by-step explanation:

Answer:

3y = 2x+6

Drawing:

Answer:

x if -3is less than x is less than -1

5 is -1 is less than x is less than 1

Step-by-step explanation:

You find the slope of the line for the first piece when the x-values range from -3 to -1.

For the second piece, the line is y=5 because the line is horizontal.

Answer:

x+3; 5

Step-by-step explanation:

The first piece, shows the diagonal part in Quadrant II.

The line segment is colinear with the line y=x+3, because the slope is 1, and the y-intercept is 3. So the piece would be defined as x+3.

The second line segment is the flat one, which has a slope of 0 and its y-intercept is 5. So the piece would be defined as 0x+5 or 5

Answer:

KD

JK

Step-by-step explanation:

Hope it helps you in your learning process

Answer:

∠1 = 48

∠2 = 132

∠4 - 132

Step-by-step explanation:

∠3 and ∠1 are vertical angles

vertical angles are congruent ( equal to each other )

So if ∠3 = 48° then ∠1 also = 48°

∠3 and ∠4 are supplementary angles

supplementary angles add up to equal 180°

Hence, ∠3 + ∠4 = 180

48 + ∠4 = 180

180 - 48 = 132

Hence, ∠4 = 132

∠4 and ∠2 are vertical angles

Like stated previously vertical angles are congruent

Hence, ∠2 = 132

Given:

The diagram of a circle.

To find:

The radius or diameter and its length, segment EB.

Solution:

If a line segment connects the center of a circle and a point on the circumference of the circle, then the line segment is known as radius.

In the given figure A is the center of the circle and points B, C, E, D are on the circumference of the circle.

So, AB, AC, AE, AD are radii of the given circle.

[tex]AB=AC=AE=AD=4\text{ cm}[/tex]

If a line segment connects two points on the  circumference and passes through the center of the circle, then the line segment is known as diameter of the circle.

In the given figure B and E are two points on the circumference of the circle and the segment BE  passes through the center A. So, BE is the diameter of the circle.

Length of the diameter is:

[tex]EB=AE+AB[/tex]

[tex]BE=4+4[/tex]

[tex]BE=8[/tex]

Therefore, the segment EB is a diameter and length of the segment EB is 8 cm.

Answer:

Option C

Step-by-step explanation:

Circumference of a circle = [tex]2\pi r[/tex]

Circumference of a circle with radius 3 ft= [tex]2\pi *3 = 6\pi[/tex]

Circumference of a circle with radius 8 ft or 16 ft= [tex]2\pi *8/2 = 16\pi/2 = 8\pi[/tex]

The difference between the two circle

[tex]8 \pi - 6\pi = 2\pi \\= 2 * 3.14\\= 6.28\\[/tex]

Hence, option C is correct

Answer:

good

Step-by-step explanation:

Answer:

a.

inverse

of

(0,1)=(1,0)

(1,0)=(0,1)

(2,-1)=(-1,2)

(3,0)=(0,3)

(4,1)=(1,4)

Step-by-step explanation:

b.

yes the function are inverse

as

(-1,2)=(2,-1)

(0,1)=(1,0)

Take any one point .

For inverse

(x,y) should be (y,-x)

Apply

Yes the functions are inverses of each other

Answer:

D

Step-by-step explanation:

Set up to different integrals that match the endpoints

so in our case it would look like

[tex]\int\limits^0_{-2} {x} \, dx +\int\limits^1_0 {x+1} \, dx[/tex]

now it's just a matter of computing it

[tex]\int\limits^0_{-2} {x} \, dx =x^2\\0^2-(-2)^2=4\\\int\limits^1_0 {x+1} \, dx =\frac{x^2}{2}+x\\\frac{1}{2}+1-0=\frac{3}{2}\\\frac{3}{2}+4=\frac{11}{2}[/tex]

Answer:

12

Step-by-step explanation:

2

4

6

8

10

12

14

16

18

20

22

24

26

Answer:

8 rooms

Step-by-step explanation:

6 ÷ 3/4 which equals 6 x 4/3 = 8

Answer:

8 rooms

Step-by-step explanation:

6 / (3/4) = 8

Sample Answer:

Both prisms are equal in volume, with it being 30 in^3. Although the triangle prism has a length of twice as much, this is countered by the formula for a triangular prism which requires for it to be divided by 2, where this is not present within the formula for a rectangular prism.

Step-by-step explanation:

For this, just pretend that h=1 to make the math easier. So the rectangular prism has a cross section that is 6 by 5 inches, so that will be its L & W.

The triangular prism has a cross section that is a 12 inch base times a 5 inch interior height, this will give the triangle's length and height respectively In this case, h will be its width, making the Base of the triangle which is Length * Width. Think of it like flipping over this prism, making the side facing you and make it the bottom of the prism.

Now, with the formulas for volume of the prisms:

Rectangular: L * W * H

Triangle: (L*W * H) / 2

Then just plug in the numbers:

Rectangular Prism:

L * H * H

6 * 5 * 1

30 * 1

30

Triangle Prism:

(12 * 5 * 1) / 2

60 / 2

30

They are equal to each other.

Answer: Choice C)  379.94 square meters

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

Work Shown:

Diameter = 22 meters

Radius = 11 meters (half the diameter)

We'll plug r = 11 into the formula below

A = pi*r^2

A = 3.14*11^2

A = 379.94

This value is approximate since pi = 3.14 is approximate. Use more decimal digits of pi to get a more accurate area value.

Answer:

A) 75%

B) 74%

Step-by-step explanation:

A) 18/24=0.75

B) 37/50= 0.74