i don't understand this ;-;
Sally can paint a room in 7 hours and John can paint the same room in 10 hours. How long should it take Sally and John to paint the room together?

Answer:

5.48

Step-by-step explanation:

32.45 - 26.97 = 5.48

Answer:

Jenna lost 5,48

Step-by-step explanation:

Before the diet Jenna's waist measured 32.45 inches.

After the  diet Jenna's waist measured 26.97 inches.

To get the difference between the two measures,  we have to discount the new measure from the previous one.

So,  difference is  26.97 inches-32.45 inches= -5,48. It is negative because she lost inches.

Answer:

The correct answer is "Circle 1 is a translation of 1 unit right and 7 units up from Circle 2, and a dilation of Circle 2 with a scale factor of 1.6"

Step-by-step explanation:

We can tell this because first they identify the movement properly. When going from (-3, 0) to (-2, 7), we move to the right one and up 7.

Also, we know there is a scale factor of 1.6, because when we look at the radius of each circle, we can divide and find that factor.

8x/5x = 1.6

it takes her half a day to make one necklace

Answer:

1/2 day

Step-by-step explanation:

4/8=1/2

Both lines are dotted so no equation should include equal to in it.

The shaded area is on the left side .

The correct answer would be y>2x+1 and x+y = -2

The 3rd answer is correct.

Answer:

y>2x+1 and x+y < -2 represent the graph line.

Step-by-step explanation:

Given : graph .

To find : Which system of linear inequalities is graphed

Solution : We have given graph with two line both lines are dotted line and shaded down.

Equation of line form  : y = mx + b.

Where, m = slope ,  b= y intercept.

Line x+y < -2 less than sign for shaded down and y intercept -2.

and y>2x+1.

Therefore, y>2x+1 and x+y < -2 represent the graph line.

Answer:

P (S∩LC) = 0.03

Step-by-step explanation:

We are given that the probability that someone is a smoker is P(S)=0.19 and the probability that someone has lung cancer, given that they are a smoker is P(LC|S)=0.158.

Given the above information, we are to find the probability hat a random person is a smoker and has lung cancer P(S∩LC).

P (LC|S) = P (S∩LC) / P (S)

Substituting the given values to get:

0.158 = P(S∩LC) / 0.19

P (S∩LC) = 0.158 × 0.19 = 0.03

Use the formula y1-y2/ x1-x2. 2+1/-3-7= 3/-10

Answer:

[tex]\large\boxed{\sin180^o=0\ and\ \cos180^o=-1}[/tex]

Step-by-step explanation:

[tex]\text{Use}\\sin(2\theta)=2\sin\theta\cos\theta\\\\\cos(2\theta)=\cos^2\theta-\sin^2\theta\\\\180^o=2(90^o)\\\\\sin90^o=1\\\\\cos90^o=0\\===================\\\\\sin180^o=\sin(2\cdot90^o)=2\sin90^o\cos90^o=2(1)(0)=0\\\\\cos180^o=\cos(2\cdot90^o)=\cos^290^o-\sin^290^o=0^2-1^2=-1[/tex]

➷ As you can tell, the ratio of the lengths is 2 : 1 (the length of a is twice the length of b)

The ratio for area would be the squared version of the length ratio

2^2 = 4

1^1 = 1

The ratio for area is 4 : 1

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ ʜᴀɴɴᴀʜ ♡

Answer:

y = 16

Step-by-step explanation:

The opposite angles of a parallelogram are congruent, hence

10y - 29 = 7y + 19 ( subtract 7y from both sides )

3y - 29 = 19 ( add 29 to both sides )

3y = 48 ( divide both sides by 3 )

y = 16

Answer: Your answer is 17/33! Hope this helps. If you need anymore help let me know!

For this case we must indicate the representation in the form of a fraction of the following decimal number:

0.51 periodic number

Option A:

[tex]\frac {17} {100} = 0.17[/tex]

Option B:

[tex]\frac {51} {100} = 0.51[/tex]

Option C:

[tex]\frac {17} {33} = 0.51515151[/tex]

Option D:

[tex]\frac {51} {33} = 1.5454[/tex]

So, the correct option is C

Answer:

Option C

Answer:   105°

Step-by-step explanation:

∠U and ∠S are supplementary angles, so

∠U + ∠S = 180°

 x  +  75° = 180°

 x            = 105°

Answer:

x = 105 degrees.

Step-by-step explanation:

RS is parallel to  TU so x + 75 = 180

x = 105 degrees.

As its is isosceles y is also = 105 degrees.

Answer:

80%

Step-by-step explanation:

The total amount of games last year was 40.

32 + 8 = 40

question says the percent of games were won which means 32/40

In percentage, it means 80%

Answer:

  674.2 lb

Step-by-step explanation:

(5 ft)·(8 ft)·(1.2 in)·(12 in/ft)²·(2.54 cm/in)³·(2.7 g/cm³)/(453.592 g/lb) ≈ 674.2 lb

_____

Comment on units conversion

Units conversion is easily done using conversion factors that have a value of 1. That is, the value of the numerator is equal to the value of the denominator. (12 in = 1 ft, for example). The numerator units are chosen to match units you want, while the denominator units are chosen to match units you want to cancel.

Here, we convert in³ to cm³ to lb using conversion factors given and ones we know.

I have attached the correct answer. Brainliest will be much appreciated!

Answer: About 22.73 days.

Step-by-step explanation: Each person throws away about 4.4 pounds of trash daily. So the way to calculate this is to divide 100 pounds by 4.4 to find out how many days it would take for a person to throw away 10 pounds of trash.

Answer: -109

Step-by-step explanation:

if you make celcius into fahrenheit,

-5 degrees becomes 23 degrees

40 degrees becomes 104 degrees

-5 + 104 = -109

Answer:

Step-by-step explanation:

Answer:

250°

Step-by-step explanation:

We know that a circle has a total of 360°.

Now we know that ∠ROW is 110° and that Arc RAW has the same End points as ∠ROW.

We can safely assume that arc RAW will be the difference of ∠ROW and 360°.

So we then get:

360° - 110° = 250°

This means that Arc RAW will be 250°

Since the sides are equal the angels have to be equal too

5x-20=2x+37

3x=57

X=19

Answer:

c. [tex]x=1,3,\:or\:7[/tex]

Step-by-step explanation:

The given equation is

[tex]x^3-11x^2+31x-21=0[/tex]

To find all real solutions using the x-intercept method, we to graph the corresponding function using a graphing tool.

The corresponding function is;

[tex]f(x)=x^3-11x^2+31x-21[/tex]

From the graph the x-intercepts are

(1,0),(3,0) and (7,0).

Therefore the real solutions are

[tex]x=1,3,\:or\:7[/tex]

Answer:

C. is the answer

Step-by-step explanation:

Answer:

That is correct

Step-by-step explanation:

When doing the math you can find that b and d are correct

Answer:

Step-by-step explanation:

Here all the statement describing the graph.

1- the cycle of the graph is 2 second.

2- mid-line of the graph is at y=0

3- amplitude is 24 i.e 12 unit + 12 unit

4- ball is traveling 24 cm in 1 sec. I.e. 12 unit in 0.5 sec and another 12 units in 0.5 sec.

Answer:

-15

Step-by-step explanation:

Multiply the whole equation by the inverse of the multiplier of the blank. Then you get ...

___ × 1 = (-27)×(5/9) = -15

The blank filled with -15 will make the equation true.

The correct answer is A.

Example: 36 divided by 9= 4 and 4 x 9 = 36

Example: 72 divided by 9= 8 and 8 x 9 = 72

Hope this helps.

To get back the original number after dividing by 9, one should multiply the result by 9, because multiplication and division are inverse operations.

The student's question asks: James thought of a number and divided it by 9. What can he do to get back his original number? The correct answer is (A) multiply by 9. When a number is divided by 9 to undo this operation one must multiply it by 9. This is because multiplication is the inverse operation of division. Therefore, if James wants to obtain his original number back, he should take the result he got after dividing by 9 and multiply it by 9.

Answer:

Step-by-step explanation:

9.65-9.56=0.09

0.09/9.56=0.009414

0.009414*100=0.94%

9.56 increased by 0.94% to 9.65

Answer:

38,999

Step-by-step explanation:

In your sample you have 26 out of 30. I like to get that number into a percentage, so you do 26 divided by 30

26/30 = .8666

Then you take your total amount of fans, 45,000 and multiply it by your percentage wearing team colors.

45,000 x .8666 = 38,999.97

Since you can't have .97 of a person, your round it down to 38,999.

Answer:

Step-by-step explanation:

If f(x) = x² and g(x) = 4x² = 4f(x), the function g(x) represents a vertical expansion of f(x) by a factor of 4.

If h(x) = g(x) +12, the function h(x) represents a translation of g(x) by 12 units upward.

Together, these transformations on f(x) are ...

_____

Please be aware that there are alternate transformations that will do the same thing:

  h(x) = 4(f(x) +3) . . . . is a translation upward by 3, then a vertical expansion by a factor of 4

  h(x) = f(2x) +12 . . . . is horizontal compression of f(x) by a factor of 2, then a translation upward by 12.

it is 21 :)))))))))))))))

let's find the least common multiple (LCM) of 3 and 7 is 21.

List the multiples of each number.

Multiples of 3: 3, 6, 9, 12, 15, 18, 21, ...

Multiples of 7: 7, 14, 21, 28, 35, 42, ...

identify the common multiples.

The common multiples of 3 and 7 are the numbers that appear in both lists. In this case, the number 21 is the smallest positive integer that appears in both lists Determine the LCM.

the LCM of 3 and 7 is 21.

For more Question on  least common

https://brainly.com/question/10749076

#SPJ2

By dividing the 7 sandwiches into quarters, 28 quarters are available, allowing for 28 people to have 1/4 sandwich each.

The student has asked: "We have 7 sandwiches.

Everyone ate 1/4 sandwich for a snack.

To find out how many people can have sandwiches, we first need to understand how much of a sandwich each person gets.

Since each person ate 1/4 of a sandwich, we can take the total number of sandwiches (7) and divide them into quarters, giving us [tex]7 * 4 = 28[/tex] quarters of sandwiches.

Since each person eats one quarter, 28 people can have sandwiches.

Answer:

Tonya cut the cylinder vertically and David cut it diagonally.

David’s cut along the length of his cylinder resulted in a rectangular cross-section, while Tonya’s perpendicular cut resulted in a circular cross-section. This illustrates principles of geometric cross-sections and plane intersections with solids.

In the problem described, David and Tonya are each cutting a cylinder, a geometric shape. The cuts they make, and the cross-sections they create, depend on the orientation of their cuts in relation to the shape of the cylinder.

When David cuts the cylinder, his cross-section result is a rectangle. This implies that he made a longitudinal cut along the length of the cylinder, essentially splitting it from top to bottom.

When Tonya cuts her cylinder, the cross-section is a circle. This means she made a cross-sectional cut perpendicular to the length of the cylinder, slicing it into two equal half cylinders.

This problem illustrates the principles of geometric cross-sections and plane intersections with solids, which are part of the broader field of study in geometry.

https://brainly.com/question/12406628

#SPJ12

Answer:

[tex]\$2,672.80[/tex]

Step-by-step explanation:

we know that

The simple interest formula is equal to

[tex]A=P(1+rt)[/tex]

where

A is the Final Investment Value

P is the Principal amount of money to be invested

r is the rate of interest  

t is Number of Time Periods

in this problem we have

[tex]t=1\ year\\ P=\$2,600\\r=0.028[/tex]

substitute in the formula above

[tex]A=\$2,600(1+0.028*1)=\$2,672.80[/tex]

3 /(6x4 x7x7 x1(6 would be 11 because the power of 3x11 would be 33 leaving it to the power of 11