4(x + 5) > 10(x - 1)

Answer:

4.5

Step-by-step explanation:

20= 85+5÷x

85+5=90

20=90÷x

Divide 90 by 20 and you end up with 4.5.

Answer:

8.5

Step-by-step explanation:

5 , 8 , 8 , 8 , 8 , 9 , 9 , 9 , 10 , 10

Cross one from the left and then one from the right

5 , 8 , 8 , 8 , 8 , 9 , 9 , 9 , 10 , 10

8 , 8 , 8 , 8 , 9 , 9 , 9 , 10 , 10

8 , 8 , 8 , 8 , 9 , 9 , 9 , 10

8 , 8 , 8 , 9 , 9 , 9 , 10

8 , 8 , 8 , 9 , 9 , 9

8 , 8 , 9 , 9 , 9

8 , 8 , 9 , 9

8 , 9 , 9

8 , 9

Since you have 2 numbers left, find the number right inbetween the two

Answer is provided in image attached.

Answer: [tex]57,512,581.63miles^2[/tex]

Step-by-step explanation:

Substitute the value of the radius of the Earth into the formula given in the problem, where r is the radius, to obtain the surface area of the Earth:

[tex]S=4(3.14)r^2\\S=4(3.14)(3,960miles)^2\\S=196,960,896miles^2[/tex]

The problem says that the dry land forms 29.2% of the Earth’s surface, therefore, multiply the surface area by [tex]\frac{29.2}{100}=0.292[/tex]

Threfore, the area of dry land is the following:

[tex]S_{land}=(0.292)(196,960,896miles^2)=57,512,581.63miles^2[/tex]

Final answer:

To find the area of the dry land on Earth, first, calculate the Earth's total surface area with the formula S=4(3.14)r². Given a radius of 3960 miles, this results in about 197,920,640 square miles for the total surface. Multiplying this by 29.2% (or 0.292) gives approximately 57,780,666.88 square miles of dry land.

Explanation:

The question asks for the area of the dry land on Earth, given Earth's radius and the percentage of its surface that is dry land. To find this, first calculate the total surface area of the Earth using the formula S = 4(3.14)r², where r is the radius of the Earth (3960 miles). The formula accounts for the surface area of a sphere. After calculating the total surface area, we then calculate 29.2% of this area to find the dry land's surface area.

Step-by-Step Calculation:

Calculate the total surface area of the Earth: S = 4(3.14)(3960)²

Find the area of the dry land by multiplying the total surface area by 29.2% (or 0.292).

Using the steps above:

S = 4(3.14)(3960)² = 197,920,640 square miles (approx.) as the total surface area.

Area of dry land = 197,920,640 * 0.292 = 57,780,666.88 square miles (approx.).

Answer:

The height is 7 m.

Step-by-step explanation:

Volume = 1/3 * area of the base * height, so

28 = 1/3 * 3 * 4 * h

4h = 28

h = 7.

Option A. A rectangular prism and a cylinder is the correct option.

Explanation:

First option is true as the vertical cross sections of both rectangular prism and cylinder are rectangles.

Second option is false (The vertical cross section through the base of a rectangular prism is a rectangle)

Third option is false (The vertical cross section through the base of a cone is a triangle)

Fourth option is false (The vertical cross section through the base of a pyramid is a triangle)

A, prism and cylinder is correct.

[tex] - {x}^{2} + 9 - 3 {x}^{2} - 11x + 4 \\ = - 4 {x}^{2} - 11x + 13[/tex]

2nd answer

Answer:

Option B. -4x² - 11x + 13

Step-by-step explanation:

Given polynomials are ( -x² + 9 ) and ( -3x² - 11x + 4 )

We have to add them.

( -x² + 9 ) + -3x² - 11x + 4 )

-x² + 9 - 3x² - 11x + 4

Now we will collect similar terms

( -x² - 3x² ) - 11x + ( 9 + 4 )

-4x² - 11x + 13

Therefore, option B is the answer.

Answer:

The correct statement is:

Step-by-step explanation:

Hence, the equation of the function f(x) is calculated by a two-point formula as:

[tex]y-2=\dfrac{-1-2}{1-0}\times (x-0)\\\\y-2=\dfrac{-3}{1}\times x\\\\y-2=-3x\\\\y=-3x+2[/tex]

( On comparing the equation of f(x) with slope intercept form.

i.e. y=mx+c

where m is the slope and c is the y-intercept)

We get slope of f(x)= -3

and y-intercept= 2

[tex]g(x)=-3x-6[/tex]

Hence, slope of g(x) = -3

and y-intercept= -6

Hence, we get that the slope of f(x) and g(x) is same.

( i.e. -3)

The correct answer should be :

Option 3 : [tex]753.6cm^{2}[/tex]

Hope this helps,

Davinia.

Odpowiedź

24

100. 12=1200

1200:50=24

Answer:

(6,-6)

Step-by-step explanation:

Because if you move to the right 3 units you add 3 to the x-axis number or in this case 3, so 3+3=6, and if you move down 4 units its the same as subtracting 4 from the y-axis number or in this case -2 so, -2-4=-6. Which gives you (6,-6).

Answer:

(6, -6)

Step-by-step explanation:

Answer:

C. 40 or B. 35

Step-by-step explanation:

Full time jobs are typically jobs that vary from 35-40 hours a week.

Hope this helps :)

Answer:

C) 40 hours

Step-by-step explanation:

Usually, a full-time job employee works 8 hours per day. There are 7 days in a week where most of employees  work 5 days a week, remaining 2 days week off.

Therefore, the number of hours per week = 5 days * 8 hours per day

= 40 hours

Hence, the answer is C) 40

Answer:

B, E and F

Step-by-step explanation:

This graph is a log which has an asymptote. This means the function does not cross it and does not have in its domain certain numbers. The asymptote is at -2. This means the domain is greater than -2.

The range is the y-values. With no restrictions here, the function includes all numbers.

This means B, E, and F are true.

The inequality is 20¢ ≤ x ≤ 32¢

Answer: 49 feet to the third power

Step-by-step explanation:

1. 3.5 x 2= 7

2. 7 x 7= 49

Answer: [tex]49\ ft^3[/tex]

Step-by-step explanation:

The volume of rectangular prism is given by :-

[tex]\text{Volume}=l*w*h[/tex], hwre l is the length , w is width and h is height of prism.

The given dimensions of rectangular prism :

Length : 2 ft

Width : 7 ft.

Height : 3.5 ft.

Now, the volume of rectangular prism is given by :-

[tex]\text{Volume}=7\times2\times3.5\\\\\Rightarrow\text{Volume}=49\ ft^3[/tex]

Hence, the volume of this right rectangular prism =  [tex]49\ ft^3[/tex]

1. 10z - 5

2. -16k + 32

3. -20a + 75

4. 6n + 7.2

5. 5n - 41

6. n = 3

7. x = -8

8. r = -2

9. y = 2

10. a = 1

11. n = -2.23333333 ( this is the only problem im unsure of answer )

Answer:   [tex]\bold{d)\quad f^{-1}(x)=\dfrac{e^x}{5}}[/tex]

Step-by-step explanation:

To find the inverse, swap the x's and y's and solve for y. Note: f(x) is y

[tex]y = ln(5x)\\\\\text{Swap the x's and y's:}\\x=ln(5y)\\\\\text{Apply e to both sides:}\\e^x=e^{ln(5y)}\\\\e^{ln}\ \text{cancels out:}\\e^x=5y\\\\\text{Divide both sides by 5:}\\\dfrac{e^x}{5}=y\\\\\large \boxed{f^{-1}(x)=\dfrac{e^x}{5}}[/tex]

ANSWER

[tex]a_{n}=a_{n-1} - 11 \: \: ,a_1 = - 3[/tex]

EXPLANATION

The given sequence is

[tex]-3,-14,-25,-36,...[/tex]

The first term of the sequence is

[tex]a_1=-3[/tex]

The common difference is

[tex]d = - 14 - - 3[/tex]

[tex]d = - 11[/tex]

The recursive formula is

[tex]a_{n}=a_{n-1} - 11 \: \: ,a_1 = - 3[/tex]

Answer:

aₙ = aₙ₋₁  -11

Step-by-step explanation:

We have given the sequence:

-3,-14,-25,-36

We have to find the explicit formula.

The first term in this sequence is:

a₁ = -3

The common difference is:

a₂-a₁= -14-(-3) = -11

a₃-a₂ = -25-(-14) = -11

a₄-a₃ = -36-(-25)= -11

Common difference d = -11

The general formula is :

aₙ = aₙ₋₁ +d

Here d = -11 so,

aₙ = aₙ₋₁  -11 is the explicit formula.

Answer:

3√(22) + 7

Step-by-step explanation:

The way this is worded can be interpreted two different ways so just to cover the bases, I'll do both. I'm confident they are asking for way 1 though because it wants you to simplify the expression, not evaluate. Way 2 gives you a solution rather than an exact equation.  

Number 1

√(6) x √(33) + 7

= √(6 x 33) + 7

= √(198) + 7

= √(9 x 22) + 7

= 3√(22) + 7

Number 2

√(6) x √(33 + 7)

= √(6) x √(40)

= √(6) x (4√(10))

= 4√(60)

= 8√(15)

The simplified expression for [tex]\sqrt{6} \times \sqrt{33} + 7[/tex] is [tex]3\sqrt{22} + 7[/tex]

To simplify square root of 6 times the square root of 33 plus 7 we need to first write it mathematically. We get:

[tex]\sqrt6 \times \sqrt{33}+7[/tex]

Using BODMAS, we first multiply the roots. This will give us:

[tex]\sqrt{6} \times \sqrt{33} + 7 = \sqrt{6 \times 33} +7[/tex]

Now we need to expand the digits in square by expressing them as a product of their prime factors so that common pairs can be taken out of the root. This can be done as follows:

[tex]\sqrt{6 \times 33} +7 = \sqrt{(3 \times 2)\times (3\times11)} +7[/tex]

We can see that there are two pairs of 3. Thus we extract 3 times 3 as it is a perfect square for 9 and we get:

[tex]3\sqrt{( 2\times 11)} +7 = 3\sqrt{2}+7[/tex]

Thus, the simplified expression for [tex]\sqrt{6} \times \sqrt{33} + 7[/tex] is [tex]3\sqrt{22} + 7[/tex]

Answer:

w > 9

Step-by-step explanation:

Solve the inequality by using inverse operations.

-4w - 2 < -38

-4w < -36

w > 9

Like solving equations, inequalities should be solved using inverse operations. However, unlike equations, when you divide or multiply by a negative the sign changes.

$15 dollars per adult

$9 per child

We have 4 adults and 5 children.

Adults: 15 x 4 = $60

Children: 9 x 5 = $45

$60 + $45 = $105

Answer: $105

Answer:

angles b and a both equal 60 degrees

Step-by-step explanation:

a and b are both equal to 60 degrees. A flat angle is 180 and you have the one that’s 120 so that one is 60 and then the last side must be 60 as well because when you add them then subtract it from 180 you get 60

Answer:

I believe it is 0.5

Step-by-step explanation:

If you flip a normal coin (called a “fair” coin in probability parlance), you normally have no way to predict whether it will come up heads or tails. Both outcomes are equally likely. There is one bit of uncertainty; the probability of a head, written p(h), is 0.5 and the probability of a tail (p(t)) is 0.5. The sum of the probabilities of all the possible outcomes adds up to 1.0, the number of bits of uncertainty we had about the outcome before the flip. Since exactly one of the four outcomes has to happen, the sum of the probabilities for the four possibilities has to be 1.0. To relate this to information theory, this is like saying there is one bit of uncertainty about which of the four outcomes will happen before each pair of coin flips. And since each combination is equally likely, the probability of each outcome is 1/4 = 0.25. Assuming the coin is fair (has the same probability of heads and tails), the chance of guessing correctly is 50%, so you'd expect half the guesses to be correct and half to be wrong. So, if we ask the subject to guess heads or tails for each of 100 coin flips, we'd expect about 50 of the guesses to be correct. Suppose a new subject walks into the lab and manages to guess heads or tails correctly for 60 out of 100 tosses. Evidence of precognition, or perhaps the subject's possessing a telekinetic power which causes the coin to land with the guessed face up? Well,…no. In all likelihood, we've observed nothing more than good luck. The probability of 60 correct guesses out of 100 is about 2.8%, which means that if we do a large number of experiments flipping 100 coins, about every 35 experiments we can expect a score of 60 or better, purely due to chance.

Answer:

The correct answer option is 0.5.

Step-by-step explanation:

If we have a fair coin then it means that it has a 50 % chance of landing heads up and a 50% chance of landing tails up.

A fair coin is one which has two sides: head and tail.

Since their are two sides to each fair coin, so the probability of landing for each of the side should add up to 1 (which is the total probability).

Therefore, likelihood that a fair coin will land heads or tails is 0.5.

Answer:

24 days

Step-by-step explanation:

April = 30 days

100% = 1.0

80% = 0.8

If 1 x 30 = 30

then 0.8 x 30 = 24

Answer:

24

Step-by-step explanation:

0.8 x 30 = 24

80% = 0.8

April = 30 days

HOPE THIS HELPED!!!!! XD

Can I have brain? please

Answer:

3/8

Step-by-step explanation:

it is greater than 2/8

Answer:

Angelo : 4

Luis : 2.9

Xavier : 3.8

Angel : 3.4

Step-by-step explanation:

As mentioned in the question, tip is 20% of the bill. Therefore, to calculate the tip each person should leave can be calculated by sum of all items and taking 20% of of the amount

1) Angelo = 2 + 8 + 10 = 20

total tip = 20% of 20 = 20/100 * 20 = 4

2) Luis = 1.50 + 8 + 5 = 14.5

total tip = 20% of 14.5 = 20/100 * 14.5 = 2.9

1) Xavier = 2 + 10 + 7 = 19

total tip = 20% of 19 = 20/100 * 19 = 3.8

1) Angel = 2 + 5 + 10 = 17

total tip = 20% of 17 = 20/100 * 17 = 3.4

Answer:

Angelo : 4

Luis : 2.9

Xavier : 3.8

Angel : 3.4

Answer:

9,5

Step-by-step explanation:

It's it reflection on the opposite side, so you get (9,5) as they were also given to you.

Answer:the answer is B

Step-by-step explanation:

The graph shows how the inequality was resolved: Option B is -X-3 >

To learn more about inequality refer to:

https://brainly.com/question/24372553

#SPJ2

Step-by-step explanation:

6 percent of 350 is 21. 21 plus 350 is 371, therefore the answer is 371.

Brainliest? :)

The population of beetles a week later is 371.

= 6% of 350 + 350

= 21 + 350

= 371

Learn more: https://brainly.com/question/9122916?referrer=searchResults

ANSWER:  

2 and 1/4

Step-by-step explanation: