can someone explain the quadratic formula real quick lol

Answer: 11x+ 8

Step-by-step explanation:

Answer:  The correct answer is -2,5/2 which is the last answer.

Step-by-step explanation:

* Hopefully the work below helps:)Mark me the brainliest:)!!

Answer:   [tex]\bold{\{-2, \dfrac{5}{2}\}}[/tex]

Step-by-step explanation:

2x² - x - 10 = 0

Replace -x with 4x - 5x and factor using Grouping Method:

2x² + 4x  -5x - 10   = 0

2x(x + 2)  -5(x + 2) = 0

(2x - 5) (x + 2) = 0

2x - 5 = 0   and    x + 2 = 0

2x = 5         and    x = -2

x = 5/2

Answer:

(-x+7) (-2x+5) are the factor of 2x²-19x+35=0

Answer:

- 77x + 42

Step-by-step explanation:

note that (f ○ g)(x) = f(g(x)

Substitute x = g(x) into f(x)

f(g(x))

= f(7x - 4)

= - 11(7x - 4) - 2

= - 77x + 44 - 2

= - 77x + 42

The inequality is determined by examining the graph, identifying the lines, their slopes and determining if they are increasing or decreasing. Positive slopes are for increasing lines and negative slopes are for decreasing lines. Inequalities should represent the identified lines and their slopes.

From your question, it seems that there's a graph involved depicting certain lines and you're supposed to choose an inequality that represents the graph. As per the given information that line A is decreasing and line B is increasing, it sounds like these lines may represent an inequality on the coordinate plane. Consider the slope of line A and line B. If one is steeper than the other, the steeper slope has a larger absolute value. An increasing line indicates a positive slope, while a decreasing line indicates a negative slope. For example, if line A is y < -2x + 3 (negative slope, line decreasing) and line B is [tex]y > 5x + 1[/tex](positive slope, line increasing), the inequality would be [tex]y > 5x + 1 - y < -2x + 3.[/tex]For a precise and correct answer, you need to analyze the graph, identify lines, intercepts, slopes, and shading to form the correct inequality.

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Answer:

33.61 ft

Step-by-step explanation:

First you find the product of 3ft and 8%

3.0(0.8)=2.4

Then you find the product of 2.4 and 14years

2.4(14)=33.61

Using the formula for exponential growth, a tree that is initially 3 feet tall and grows at a rate of 8% per year would be approximately 5.23 feet tall at the end of 14 years.

To solve this problem, we can use the formula for exponential growth: Final amount = Initial amount * (1 + Growth rate) ^ Number of periods.

The initial height of the tree is given as 3 feet. This is our initial amount. The growth rate is 8% per year, so we represent this as 0.08 in our formula. The number of periods is 14 years.

So, we have:

Final height = 3 * (1 + 0.08) ^ 14

To find the final height, we multiply 3 by 1.08 raised to the power of 14. Doing the math, the tree would be approximately 5.23 feet tall at the end of 14 years, rounded to the nearest hundredth.

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When there was no snow fall, the line would be flat ( horizontal).

There was no snow Between 3:30 pm and 2:00 pm.

Answer:

12:30 pm to 1:00 pm.

Step-by-step explanation:

Hope this helps you.

Answer:

these are independent

Step-by-step explanation:

[tex] \frac{2x}{y} \: x = - 28 \: y = - 7[/tex]

[tex]2( - 28) \div ( - 7)[/tex]

[tex] \frac{ - 56}{ - 7} [/tex]

[tex] = 8[/tex]

The simplification of the given expression for x= -28 and y =-7 is 8.

Usually, simplification involves proceeding with the pending operations in the expression.

Simplification usually involves making the expression simple and easy to use later.

The given expression is 2x/y.

Substiute the given values;

x= -28 and y =-7

Then, 2x / y = 2(-28) / -7

= -56 / -7

= 8

Hence, the simplification of the given expression for x= -28 and y =-7 is 8.

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Answer:

10 carrots and 5 potatoes

Step-by-step explanation:

1) 15÷6=2.5

2)4 x 2.5=10

3)2 x 2.5=5

Answer:

468

Step-by-step explanation:

The volume of a cube is V = s³. Fin the volume of each cube separately and add together for the volume all together.

The small cube has side length 5 so V = 5³ = 125.

The large cube has side length 7 since 12 - 5 = 7. So V = 7³ = 343.

Together the volume is 125 + 343 = 468

Answer:

468

Step-by-step explanation:

Answer:

0.78

Step-by-step explanation:

"The probability that a family with 5 children will have at least 2 boys" is equivalent to the complement 1 - P(family will have 1 or 0 boys).

We can use a calculator with statistical functions built in to calculate this probability.  The function needed is for binomial probability:  binom(n, p, x).

P(family will have 1 or 0 boys) = binomcdf(5, 0.5, {0, 1} ) produces two results:  one the probab. of having 0 boys and one the probab. of having 1 boy:  0.03125 and 0.1875.  We add these together, obtaining 0.21875.

Then we subtract this result from 1 to obtain The probability that a family with 5 children will have at least 2 boys:  1 - 0.21875 = 0.78125, which may be reasonably rounded off to 0.78.

Answer:

81.3%.

Step-by-step explanation:

This is  Binomial probability.

Prob( Getting 1 boy) = 5C1 (1/2)^5

= 0.156

Prob ( Getting all girls = 5C5  (1/2)^5

= .031.

So Prob( at least 2 boys = 1 - (0.156 + 0.031)

= 0.813

= 81.3%.

Answer:

11*w=x

Step-by-step explanation:

x= the amount of money he will have after w weeks

so, 11 times the amount of weeks will give you the amount he has after any number of weeks

Answer:

Step-by-step explanation:

H=7+30t-16t²

20=-16t²+30t+7

0=-16t²+30t-13

T=(-30±√(900-4(16)13))/-32

T=0.68 s or T=1.2 s

Answer:

Step-by-step explanation:

Answer:

C. b = -5/3

Step-by-step explanation:

9b2 + 30b + 25 =0

(3b)^2 + 30b +(5)^2  = 0  <---perfect square

(3b + 5)^2 = 0

(3b + 5) = 0

3b = -5

 b = -5/3

Answer

C. b = -5/3

Answer:

C. b = -5/3

Step-by-step explanation:

9b² + 30b + 25 = 0

We can factor: two numbers that add up to 30 and its' product is 225: 15 & 15.

So we have 9b² + 15b + 15b + 25 = 0.

We can change this to (3b + 5) (3b + 5), or (3b + 5)².

This means there is only one solution: 3b + 5 = 0.

This can be turned into 3b = -5 -> b = -5/3.

Answer:

$3,450

Step-by-step explanation:

As Maria earns 15% commission, a car sale of $23,000 would lead to a $3,450 commission. This can be achieved by multiplying .15 (15% translated into a decimal) to the total car sale of $23,000.

x = commission

x = 23,000 * (.15) = 3,450

Final answer:

Maria would earn a commission of $3,450 on a sale of a car priced at $23,000, calculated by multiplying the sale amount by her 15% commission rate.

Explanation:

Maria earns a 15% commission on her car sales. If she sells a car for $23,000, her commission is calculated by multiplying the total sale amount by the commission rate. To find the commission, use the following formula:

Commission = Sale Amount × Commission Rate

Commission = $23,000 × 0.15

Commission = $3,450

Therefore, Maria would earn a commission of $3,450 on a sale of $23,000.

For this case we must evaluate the following expression:

[tex]\sqrt [4] {16}[/tex]

We have by definition of properties of powers and roots that:

[tex]\sqrt [n] {a ^ m} = a ^ {\frac {m} {n}}[/tex]

On the other hand, we can rewrite the 16 as:

[tex]16 = 2 * 2 * 2 * 2 = 2 ^ 4[/tex]

So:

[tex]\sqrt [4] {16} = \sqrt [4] {2 ^ 4} = 2 ^ {\frac {4} {4}} = 2 ^ 1 = 2[/tex]

ANswer:

Option D

Answer:

[tex]\frac{x}{4}-\frac{111}{4}\\x=2y+7[/tex]

I'm pretty sure this is correct!

Answer:

(- 97, - 52)

Step-by-step explanation:

given the 2 equations

x - 4y = 111 → (1)

2y - x = - 7 → (2)

Rearrange (1) expressing x in terms of y by adding 4y to both sides

x = 111 + 4y → (3)

Substitute x = 111 + 4y into (2)

2y - (111 + 4y ) = - 7 ← distribute and simplify left side

2y - 111 - 4y = - 7

- 2y - 111 = - 7 ( add 111 to both sides )

- 2y = 104 ( divide both sides by - 2 )

y = - 52

Substitute y = - 52 into (3) for corresponding value of x

x = 111 + 4(- 52) = 111 - 208 = -97

Solution is ( - 97, - 52 )

Answer:

A

Step-by-step explanation:

B doesn't work because you can have people who are in a band and not in a band at the same time, which is showing in the first spot

Answer: Option 'a' is correct.

Step-by-step explanation:

Since we have given that

Number of students asked in a survey = 60

Number of students who play an instrument = 35

Number of students who are in band = 30

Number of students who are not in band = 30

So, the two way frequency table would be :

                                          Play instrument     Not play instrument    Total

In band                                       30                             0                           30

Not in band                                  5                             25                          30

Total                                          35                             25                           60

Hence, option 'a' is correct.

It is a geometric sequence but not an arithmetic sequence. So the answer is B

a yard = 3 feet, a foot =12 in, so 3 yardsx3 feet would be 9 feet, plus the 2 other feet, would be 11, times 12 inches, would be 132 inches.

Answer:

The correct answer is 3 yards 2 feet = 132 inches

Step-by-step explanation:

Points to remember

1 Yard = 3 foot

1 foot = 12 inches

It is given that,  3 yards 2 feet we have to convert it into inches.

To convert into inches

3 yards to feet

we have, 1 Yard = 3 foot

3 yards = 3 * 3 = 9 feet

3 yards 2 feet = 9 feet + 2 feet = 11 feet

11 feet to inches

1 foot = 12 inches

11 feet = 11 * 12 = 132 inches

Answer:

1. B

2. 2 and 1/8 cups

Step-by-step explanation:

You just had to make common denominators and then your would subtract

Answer:

1) B

2) 2 1/8 cups

Step-by-step explanation:

1) make the denominator the same so it is 5 4/12 minus 2 9/12. You get 2 7/12 which is greater than 2 1/2 (2 6/12) and smaller th an 3

2) 8 7/8 minus 6 3/4 is equivalent to 8 7/8 minus 6 6/8 which is 2 1/8

All done mentally.

Since OC is perpendicular to AB, the line AB gets split evenly. So

[tex]ab = 2ac[/tex]

So AB=2*6.7=13.4

Ans: Option B, 13.4 units

Length of ab is B. 13.4 units

According to the problem,

∴ OC should bisect AB

∴ Length of AB = 13.4 units.

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Answer:

sin2b sin b

2 sin b cos b sin b

2 cos b sin^2 b

1−cos2b cos b

1- (2cos^2 b−1) cosb

2 cos beta

Answer:2sin =bahsyg=a=78sinb-7823sin=   1-tan2b

4*6m=24m

-7*4=-28

24m -28

Answer:

24m-28

Step-by-step explanation:

The mean number of acres for each park for the two cities is:

City A: 7.5

City B: 7.3

Hence, It is Much greater for City A than for City B.

And, The range for the number of acres for parks for the two cities is : 8

The process of combining two or more numbers is called the Addition. The 4 main properties of addition are commutative, associative, distributive, and additive identity.

Given that;

The table shows the number of acres for each park in the two cities.

City A:  6   9   10   7   10   10   2   5   8   8

City B :  5   10   8   11    7    12   6   5   4   5

For City A:

Minimum acre of park = 2

Maximum acre of park = 10

Hence, Range = Maximum-Minimum

Range = 10-2

Range = 8

Now mean is calculated as:

Mean = 6 + 9 + 10 + 7 + 10 + 10 + 2 + 5 + 8 + 8 / 10

          = 75/10

          = 7.5

For City B:

Minimum acre of park = 4

Maximum acre of park = 12

Hence, Range = Maximum-Minimum

Range = 12-4

Range = 8

Now mean is calculated as:

Mean = 5 + 10 + 8 + 11 + 7 + 12+ 6 + 5+ 4 + 5 / 10

         = 73/10

         = 7.3

Hence, The mean number of acres for each park for the two cities is:

City A: 7.5

City B: 7.3

Hence, It is Much greater for City A than for City B.

And, The range for the number of acres for parks for the two cities is : 8

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Answer:

x=1

Step-by-step explanation:

you would substitute the first equation in for the y in the second equation

x + 2x+3 =6

then you would combine the x's

3x +3 = 6

Then you would move the 3 to the other side with the six

3x =6-3       3x = 3

Then finally you would divide the three

3x/3 = 3/3   x=1

Answer:

A. 7

Step-by-step explanation:

count the squares

Answer:

The answer is A

Step-by-step explanation:

Each square on the grid is 1 unit, and the distance from A to B is 7 squares which is 7 units

Answer:

2(x-4) = 5

Step-by-step explanation:

2(x-4) = 5 since the difference of a number and 4 translates to x-4 and twice the difference translates to 2(x-4).

The required equation is, 2(x-4) = 5

It is a mathematical statement which contains two algebraic expressions on both sides of an ' = ' sign.

Equation shows the equality between the expressions in left hand and right hand side.

According to the problem, the variable for the unknown number = x

Now we have to establish the equation.

Difference between x & 4 = (x-4)

Twice the difference between x & 4 = 2(x-4)

Twice the difference between x & 4 is equals to 5.

∴ The equation is, 2(x-4) = 5

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