Find the domain of the function expressed by the formula: y= 1/x +7

Answer:

Step-by-step explanation:

[tex]44:20[/tex]

Cancel common factor : 4

[tex]44 \div 4 = 11 \\ 20 \div 4 = 5 \\ 11:5[/tex]

The ratios are 44:20=11:5

A ratio is an ordered pair of numbers a and b, written a / b where b does not equal 0.

The given ratios are  44:20 = ?:5

we have to find the number in question mark place.

Let question mark be taken as x.

The ratios can be written in the form of fraction

44/20=x/5

Apply cross multiplication

44×5=20x

220=20x

Divide both sides by 20

x=220/20

x=11

Hence, the ratios are 44:20=11:5

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[tex]\\ \sf\longmapsto \dfrac{1}{4}y-7=\dfrac{1}{9}y[/tex]

[tex]\\ \sf\longmapsto \dfrac{1}{4}y-\dfrac{1}{9}y=7[/tex]

[tex]\\ \sf\longmapsto \dfrac{9-4}{36}y=7[/tex]

[tex]\\ \sf\longmapsto 5y=36(7)[/tex]

[tex]\\ \sf\longmapsto 5y=252[/tex]

[tex]\\ \sf\longmapsto y=50.4[/tex]

Answer: it is (c)

i hope this helped :)

Answer:

The smallest thing is visible to the naked eye is 1/3x10^5 times as thick as DNA.

The thickness of DNA is 3x10^-5 of the thickness of the smallest thing visible to the naked eye.

Step-by-step explanation:

Answer:

Whatever is smallest to the naked eye is 1/3x10^5 times as thick as DNA.

The amount of the 12 grams sample of gold-195m having a half-life of 30.5 s that would remain after 41 s is 4.726 g

n = t / t½

n = 41 / 30.5

n = 82/61

N = N₀ / 2ⁿ

N = 12 / 2^(82/61)

N = 4.726 g

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Answer:

2.3 (decimal form)

Step-by-step explanation:

Convert 4 1/2 and 2 1/5 into improper fractions.

4 1/2 -> 9/2, 2 1/5 -> 11/5

Then you subtract, find the LCD (Least Common Denominator) and then you can combine.

Decimal form of answer: 2.3

Exact form of answer: 23/10

Mixed number form: 2 3/10

Any of those work! ⬆

Answer:

See below

Step by step explanation:

Step-by-step explanation:

For cylinder:

r = 9 inches

h = 15 inches

[tex]V_{cylinder}=\pi r^2 h[/tex]

[tex]\implies V_{cylinder}=3.14 (9)^2 (15)[/tex]

[tex]\implies\huge\purple{ V_{cylinder}=3,815.1\:inch^3}[/tex]

[tex]V_{cone}=\frac{1}{3} V_{cylinder}[/tex]

[tex]\implies V_{cone}=\frac{1}{3}\times 3,815.1[/tex]

[tex]\implies \huge\orange{V_{cone}=1,271.7\: inch^3}[/tex]

Cone's volume is one third of the cylinder's volume.

Answer:

7 flower bunches

Step-by-step explanation:

One flower bunch requires 12 roses since 48/4 is 12

then to find out how many flower bunches can be made by 84 roses you would have to divide 84 by 12 which gives you 7.

Answer:

7

Step-by-step explanation:

48 roses divided by 4 roses is 12 roses per bunch.

84/12=7

Answer:

2. Change from dog/cat to tails/heads.DDC = TTH  CDC = HTH DCD = THT     CCD = HHT DDD = TTT CCC = HHH DCC = THH CDD = HTT

Answer:

5

Step-by-step explanation:

this is easy

Answer:

2

Step-by-step explanation:

Answer:

60 lawns

Step-by-step explanation

6/5 lawns per hour times 50 hours = 60 lawns.

rate x time

9514 1404 393

Answer:

  7. odd angles, 143°; even angles, 37°

  8. odd angles, 159°; even angles, 21°

  9. even angles, 34°; odd angles, 146°

  10. even angles, 29°, odd angles, 151°

Step-by-step explanation:

Angles 1 and 3 are vertical angles, so are congruent. The same can be said of angles 2 and 4. Each odd-numbered angle is supplementary to each even-numbered angle.

__

7. m∠1 = m∠3 = 143°, m∠2 = m∠4 = 180° -143° = 37°

8. m∠1 = m∠3 = 159°, m∠2 = m∠4 = 180° -159° = 21°

9. m∠2 = m∠4 = 34°, m∠1 = m∠3 = 180° -34° = 146°

10. m∠2 = m∠4 = 29°, m∠1 = m∠3 = 180° -29° = 151°

Answer:

sin(θ) is negative, cos(θ) is positive

Step-by-step explanation:

Cosine corresponds to the x-coordinate within the unit circle, sine corresponds to the y-coordinate. In quadrant I, they are both positive, in quadrant II, x is negative whilst y is positive, and you would just continue by how they correspond as show in the unit circle, therefore, in quadrant IV, x is positive, y is negative.

Answer:

1754

Step-by-step explanation:

114% : 2000

100% : x

x =

[tex]2000 \times 100\% \div 114\% = 1754 \: customers \\ [/tex]

The area of the region is -2/3 square units

Since the region is bounded on the left by x = y²/2 and on the right by x = 3y - 4 for 2 ≤ y ≤ 4, the area of the region is given by

[tex]A = \int\limits^4_2 {\frac{y^{2}}{2} } \, dy - \int\limits^4_2 {(3y - 4)} \, dy \\[/tex]

Integrating, we have

A = [y³/6]₂⁴ - [3y²/2 - 4y]₂⁴

A = [4³/6 - 2³/6] - [3(4)²/2 - 4(4) - {3(2)²/2 - 4(2)]}]

A = [64/6 - 8/6] - [3(16)/2 - 16 - {3(4)/2 - 8]}]

A = [64/6 - 8/6] - [3(16)/2 - 16 - {3(4)/2 - 8]}]

A = [64/6 - 8/6] - [3(8) - 16 - {3(2) - 8]}]

A = [(64 - 8)/6] - [3(8) - 16 - {3(2) - 8]}]

A = [56/6] - [24 - 16 - {6 - 8}]

A = [56/6] - [8 - {-2}]

A = [56/6] - [8 + 2]

A = [56/6] - [10]

A = 56/6 - 10

Taking the L.C.M, we have

A = (56 - 10 × 6)/6

A = (56 - 60)/6

A = -4/6

A = -2/3 square units

So, the area of the region is -2/3 square units

Find the graph in the attachment

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cube surface area = 6 x 9 x 9 = 486 in²

Answer:

2x2 - 7 = 9

Step-by-step explanation:

The factoring method can be chosen to solve the equation 2x2 - 7 = 9. It is one of the easiest methods as we can isolate the variable by factoring out the GCF and obtaining the values.

Answer:

C. X²-4X+6

MY ANSWER(not sure)

Answer:

Metric Unit: US Standard Unit (English Unit or Customary Unit) Millimeter (mm) Used to measure very short lengths or thicknesses. Example, length of a pencil tip. Centimeter (cm): Used to measure small lengths. Example: Length of a pencil. Meter (m): Used to measure big lengths. Example: Length of a classroom. Kilometer (km):

Step-by-step explanation:

Answer:

C.

Step-by-step explanation:

A box of tissues is not that big, so we can't use kilometers.

You are only measuring the length, not the weight, so we can't use grams or kilograms.

The only option left is C, centimeters.

Answer:

42

Step-by-step explanation:

Its impossible tto calculate x there.

But i can simply the expression for you...

42x²-13x+1

Answer:

2x+9 is the equation

x = 10.5

Step-by-step explanation:

2x + 9 = 30

2x = 30 - 9 = 21

x = 21 ÷ 2 = 10.5

Hope this helps!

Answer:220g

Step-by-step explanation:

1 kg is equivalent to 1000g, therefore 1000g - 780g = 220g

Answer:55

Step-by-step explanation:

i had that question in my test

Answer:

the person above me is correct!

Step-by-step explanation:

Answer:

The answer is C because 8-6=2 and 2 is equal to 2

Step-by-step explanation:

The probability model shows the distribution of people of age 20 to 39 years

The value of the probability P(A) is 0.631

From the question, the notation P(A) represents the probability that a person is either 20-24 years old or is married

From the table, we have the following parameters:

The probability, P(A) is then calculated as:

P(A) = P(20-24) + P(Married) - P(20-24 and Married)

Substitute known values

P(A) = 0.26 + 0.398 - 0.027

Evaluate the expression

P(A) = 0.631

Hence, the value of the probability P(A) is 0.631

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Answer:

40

Step-by-step explanation:

Answer:

2= log(2x)

3=log(x)

4=log(x)

Step-by-step explanation:

First, you have to line up the decimal places (it isn't multiplication or division).

  25.21

-  12.47

_______

12.74

25.21-12.47 = 12.74

Answer:

12.47

Step-by-step explanation:

Answer:

Multiplication

Step-by-step explanation:

simple form:

-4 x 6

-4 TIMES 6

therefore -4•6

Answer:

it stands for x or multiply

Step-by-step explanation: