can somebody please explain this to me. it’s timed

Answer:

19.6

Step-by-step explanation:

The circumference is 10 m so the closest answer is A

Answer:

The answer is B

Step-by-step explanation:

This is because to find circumference the formula is r2π. The radius 5 times 2 = 10. Then to get an approximation from pi you sue 3.14. 10 x 3.14 = 13.4.

Hope this helps.

Answer:

The difference in the amounts of carbon powder and ammonium carbonate is [tex]88.3\times 10^{-6}[/tex] grams.

Step-by-step explanation:

According to this statement, we have a mixture with [tex]3.7\times 10^{-6}[/tex] grams of carbon powder and [tex]92\times 10^{-6}[/tex] grams of ammonium carbonate. The difference between those amounts consist in subtracting the latter quantity for the former one. That is:

[tex]\Delta m = 92\times 10^{-6}\,g \,-\,3.7\times 10^{-6}\,g[/tex]

[tex]\Delta m = 88.3\times 10^{-6}\,g[/tex]

The difference in the amounts of carbon powder and ammonium carbonate is [tex]88.3\times 10^{-6}[/tex] grams.

Parks wants to share her point of view about a challenging time in history. ... She also uses chronological structures to explain the order of events that she narrates in MY STORY. Her memoir let's her share her first-person perspective in a way that other types of narration cannot.

Answer:

x = 3, y= -1

Step-by-step explanation:

12x-y=37

-5x-y=-14

12x-y=37

-1(-5x-y)=-1(-14)

12x-y+5x+y=37+14

17x = 51

(17x)/17 = 51/17

x = 3

12(3)-y=37

36-y=37

-y = 1

y = -1

Answer: 33 cookies.

Step-by-step explanation: To find the 75% of 44 cookies, use these steps:

Step 1: Our output value is 44.

Step 2: We represent the unknown value with x.  

Step 3: From step 1 above, 44 = 100%.

Step 4: Similarly, x = 75%.

Step 5: This results in a pair of simple equations:

Step 6: By dividing equation 1 by equation 2 and noting that both the RHS (right-hand side) of both equations have the same unit (%); we have:

Step 7: Again, the reciprocal of both sides gives:

Therefore, 75% of 44 is 33. Thus, it is 33 cookies.

Step-by-step explanation:

Hey there! Your answer :-

The skeletal formula of a quadratic equation is :-

[tex]\sf{ax^2 + bx + c}[/tex]

According to this question, we have :-

[tex]\sf{3x^2 + 8x + 4}[/tex]

So, the answers :-

Hope it helps :) Best of luck for your future!

Answer:

need a image to answer this

Answer:

uh i think it's 25%

Step-by-step explanation:

Answer:

After 3 years Mariah will have $1,805.40 while her sister Isabel will have $1,889.56.

Step-by-step explanation:

Since Mariah will deposit $ 1,530 in an account that earns 6% simple interest every year, while her sister Isabel will deposit $ 1,500 in an account that earns 8% interest compounded annually, and the deposits will be made on the same day, and no additional money will be deposited or withdrawn from the accounts, to determine the balances of Mariah's account and Isabel account at the end of the 3 years the following calculations must be performed:

Mariah:

1,530 + ((1,530 x 0.06) x 3) = X

1,530 + (91.8 x 3) = X

1,530 + 275.4 = X

1,805.4 = X

Isabel:

1,500 x (1 + 0.08 / 1) ^ 3x1 = X

1,500 x 1.08 ^ 3 = X

1,500 x 1,259712 = X

1,889.568 = X

Therefore, after 3 years Mariah will have $ 1,805.40 while her sister Isabel will have $ 1,889.56.

Answer: 2x2−13x-2

the x next to 13 is not multiply

Answer:

Slope = 3

Y-intercept = -2

Step-by-step explanation:

Points on the line: (0, -2) and (1,1)

Slope:

m=(y2-y1)/(x2-x1)

m=(1+2)/(1-0)

m= 3/1

m = 3

Slope-intercept:

y - y1 = m(x - x1)

y + 2 = 3(x - 0)

y + 2 = 3x

y = 3x - 2

y = mx + b, where

m = slope

b = y-intercept

Answer:

1/9

Step-by-step explanation:

Subtract them

5/9-4/9=1/9 Answer

Answer:

A

Step-by-step explanation:

3x – 7 > – 1

3x > 6

x < 2

Answer:

For short Go all the down

Conversion a mixed number 8 1/4

to a improper fraction: 8 1/4 = 8 1/4

= 8 · 4 + 1/4

= 32 + 1/4

= 33/4

To find new numerator:

a) Multiply the whole number 8 by the denominator 4. Whole number 8 equally 8 * 4/4

= 32/4

b) Add the answer from previous step 32 to the numerator 1. New numerator is 32 + 1 = 33

c) Write a previous answer (new numerator 33) over the denominator 4.

Eight and one quarter is thirty-three quarters

Conversion a mixed number 3 2/5

to a improper fraction: 3 2/5 = 3 2/5

= 3 · 5 + 2/5

= 15 + 2/5

= 17/5

To find new numerator:

a) Multiply the whole number 3 by the denominator 5. Whole number 3 equally 3 * 5/5 = 15/5

b) Add the answer from previous step 15 to the numerator 2. New numerator is 15 + 2 = 17

c) Write a previous answer (new numerator 17) over the denominator 5.

Three and two fifths is seventeen fifths

Subtract: 33/4

- 17/5

= 33 · 5/4 · 5

- 17 · 4/5 · 4

= 165/20- 68/20

= 165 - 68/20

= 97/20

For adding, subtracting, and comparing fractions, it is suitable to adjust both fractions to a common (equal, identical) denominator. The common denominator you can calculate as the least common multiple of both denominators - LCM(4, 5) = 20. In practice, it is enough to find the common denominator (not necessarily the lowest) by multiplying the denominators: 4 × 5 = 20. In the next intermediate step, the fraction result cannot be further simplified by canceling.

In words - thirty-three quarters minus seventeen fifths = ninety-seven twentieths.

Conversion a mixed number 2 1/3

to a improper fraction: 2 1/3 = 2 1/3

= 2 · 3 + 1/3  

= 6 + 1/3  

= 7/3

To find new numerator:

a) Multiply the whole number 2 by the denominator 3. Whole number 2 equally 2 * 3/3

= 6/3

b) Add the answer from previous step 6 to the numerator 1. New numerator is 6 + 1 = 7

c) Write a previous answer (new numerator 7) over the denominator 3.

Two and one third is seven thirds

Subtract: 7/3  - 1/4  

= 7 · 4/3 · 4 - 1 · 3/4 · 3  

= 28/12- 3/12

= 28 - 3/12

= 25/12

For adding, subtracting, and comparing fractions, it is suitable to adjust both fractions to a common (equal, identical) denominator. The common denominator you can calculate as the least common multiple of both denominators - LCM(3, 4) = 12. In practice, it is enough to find the common denominator (not necessarily the lowest) by multiplying the denominators: 3 × 4 = 12. In the next intermediate step, the fraction result cannot be further simplified by canceling.

In words - seven thirds minus one quarter = twenty-five twelfths.

Subtract: the result of step No. 3 - the result of step No. 5 = 97/

20  - 25/12  

= 97 · 3/20 · 3  - 25 · 5/12 · 5  

= 291/60  - 125/60

= 291 - 125/60

= 166/60

= 2 · 83/2 · 30

= 83/30

For adding, subtracting, and comparing fractions, it is suitable to adjust both fractions to a common (equal, identical) denominator. The common denominator you can calculate as the least common multiple of both denominators - LCM(20, 12) = 60. In practice, it is enough to find the common denominator (not necessarily the lowest) by multiplying the denominators: 20 × 12 = 240. In the next intermediate step, , cancel by a common factor of 2 gives 83/30

In words - ninety-seven twentieths minus twenty-five twelfths = eighty-three thirtieths.

Step-by-step explanation:

83/30 is the awnser

Answer:

5*(-8)

Step-by-step explanation:

Answer:

77 feet

Step-by-step explanation:

Answer:

a: -3x+1

Step-by-step explanation:

-3x+1

hope it helps <3

Answer:

a)ab and yz, ac and xy, bc and xz

b)yz  =   xy  =   xz          30 = 37.5 = 45      3 = 3 = 3      

ab      ac        bc          40     50       60     4    4    4

c)they are similar because all sides break down to ¾  

Step-by-step explanation: i did this on my test

a) The pairs of proportional triangle is

AB and YZ,

AC and XY,

BC and XZ

b) The fraction of side is

YZ / AB = XY / AC= XZ / BC = 3/4.

c) Yes the similarity of Triangle.

Similar triangles are triangles that have the same shape but differ in size. Similar items include all equilateral triangles and squares with any side length. In other words, if two triangles are identical, their corresponding angles and sides are congruent and in equal proportion. The " sign here denotes the resemblance of triangles.

In Triangle ABC and YZX

a) So, the pairs of proportional triangle is

AB and YZ,

AC and XY,

BC and XZ

b) The fractions with your side pairs is

YZ / AB = 30 / 40 = 3/4

XY / AC = 37.5 / 50 =  3/4

XZ / BC = 45/ 60 = 3/4.

c) As, the ratio of sides are proportion.

So, by SSS similarity criteria the triangles are similar.

Learn more about Similarity here:

https://brainly.com/question/26451866

#SPJ3

Answer:

7cm

Step-by-step explanation:

Volume =1/3Base area × height

98 = 1/3 BA *6

98=2BA

Base area = 98÷2

Base area =49

Length=√49

Length=7cm

Answer:

m=-4/3

Step-by-step explanation:

The equation for slope is y2-y1/x2-x1

m=(y2-y1)/(x2-x1)  

m=(12--4)/(1-13)  

m=16/-12

m=-4/3

Answer:

Tangent is the answer.

Hope it helps!!!

you know that your line is perpendicular to the line with equation y equals 3x + 5 right whenever a line is perpendicular to another perpendicular not parallel to the line has a negative slope of the other line for example if you had a line with slope 2 x in the line perpendicular to that would have slope -1 / 2X so then you line in your question has slope -1 / 3 x by doing the Rococo of 3 and adding a negative sign to your equation sulfur looks like this y equals negative 1 / 3 x + B where is B is a constant 3 all you have to do is solve for b is a plug in the coordinate values 6 equals x minus -2 equals one in rearrange y equals -1 / 3 x + B negative two equals negative one over three 6 plus b negative two equals negative two plus be there for me easy roast F4U equation of the line is y equals -1 / 3 x

Answer:

x=11

I think

Step-by-step explanation:

Answer:

-3

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

x = − 3

Answer:

Step-by-step explanation:

It has 3 terms so it is a trinomial.

It can also be called a quadratic.

Answer:

a trinomial.

If that is what ur asking for

Step-by-step explanation:

Answer:

b and d

Step-by-step explanation:

iykyk this is ez day I just did the math and got it

Answer:

B and D.

Step-by-step explanation:

If we divide the numerator by the denominator (i.e. 2 divided by 5 which is 0.4 or 40%) we get decimal points that we can then convert to percentages.

A. 2 divided by 5 is 0.4 or 40%.

B. 3 divided by 5 is 0.6 or 60%.

C. 1 divided by 3 is approx. 0.33 or approx. 33.33%.

D. 9 divided by 20 is 0.45 or 45%.

Out of these, the only two fractions that are between 0.41 and 61% are B and D.

Hope it helped!

Answer:

166.52 cubic feet.

Step-by-step explanation:

We can Know the volume of a by using the expression below

V =[ (4/3)πr^3] .............eqn(1)

Given Diameter= 8.6 ft

radius= Diameter/ 2 = (8.6 ft)/2 = 4.3 ft

Eqn(1) gives the formula for volume of a WHOLE sphere, but what we need is

HALF of whole sphere, then we have

V =[ (4/3)πr^3] / 2

Then eqn(1) becomes [ (2/3)πr^3]

Volume of hemisphere

= [ (2/3)πr^3].....eqn(2)

If we substitute into eqn(2) we have

Radius= 4.3 ft

V(hemisphere) = (2/3)π(4.3)^3

= 166.52 cubic feet.

Hence, the volume of a hemisphere is

166.52 cubic feet.

Answer:

92 nickels and 64 dimes

Step-by-step explanation:

5n+10d=1100

n+d=156

n+2d=220

d=64

n=92

Answer:

2^x - 4 is the answer here