Please please help!!!!!

A, B, and C are the coefficients. They are not the terms as you have written now.

A quadratic equation is in the form Ax^2 + Bx + C. Therefore, A = 1, B = 8, and C = -6.

The axis of symmetry is  found using the equation -b/2a, as you've done. Therefore, the axis of symmetry is -8/2(1) = -4.

Hope this helps!! :)

Answer:

21.75 m^2

Step-by-step explanation:

area of a triangle =base*height/2

=8.7 * 5/2

=43.5/2

=21.75 m^2

Answer:

21.75m^2

Step-by-step explanation:

5x8.7= 43.5

43.5/2 = 21.75

Answer:

d

Step-by-step explanation:

0,0,0,1,1,1,2,2,3,4,7

count the numbers of the number? so theres six 0's and 1's altogether

theres three 2's and 3's altogether

there one 4

theres one 7

then plot them on the chart

9514 1404 393

Answer:

  D: {-3, -2, 2}

  R: {1, 2, 4}

Step-by-step explanation:

The domain is the list of first-values of the ordered pairs:

  D: {-3, -2, 2}

The range is the list of second-values of the ordered pairs:

  R: {1, 2, 4}

'Option B' is the correct answer....

The number of ways that students chose not a seventh grader will be 31 thus option (B) is correct

When the order of the arrangements counts, a permutation is a numerical approach that establishes the total number of alternative arrangements in a collection.

The number of alternative configurations in a collection of things when the order of the selection is irrelevant is determined by combination.

As per the given,

There are 15 sixth graders, 10 seventh graders, and 16 eighth graders in a gym class.

Total number of students = 15 + 10 + 16 = 41

Students that not in 7th grade = 41 - 10 = 31

The number of ways to choose 1 from 31

31C1 = 31

Hence "There were 31 different methods in which students decided not to be a seventh grader".

For more about permutation and combination,

https://brainly.com/question/13387529

#SPJ2

Answer:

f(-10) = 186

Step-by-step explanation:

Sub in -10 to the x - values:

f(x) = 2[tex]x^{2}[/tex] + [tex]x[/tex] - 4

f(-10) = 2(-10)^2 - 10 - 4

f(-10) = 200 - 10 - 4

f(-10) = 186

9514 1404 393

Answer:

  (a)  2

Step-by-step explanation:

Simplify this fraction the same way you would any fraction: cancel common factors from numerator and denominator.

  [tex]22x^2y^2\div11x^2y^2=\dfrac{22x^2y^2}{11x^2y^2}=\dfrac{2\cdot11x^2y^2}{11x^2y^2}=2\cdot\dfrac{11x^2y^2}{11x^2y^2} = 2\cdot1 = \boxed{2}[/tex]

Answer:

x = 6.93

y = 13.86

Step-by-step explanation:

We can solve x by;

Tan(60) = 12/x

Tan(60) * x = 12

x = 12 / Tan(60)

x = 6.93

We can solve y by;

A² + B² = C²

12² + 6.93² = y²

144 + 48.02 = y²

192.02 = y²

[tex]\sqrt{192.02}[/tex] = y²

13.86 = y

Hope this helps!

He is incorrect because he should have 6 factors of 9.

Answer:

I think he is incorrect because 3x3 x 3x2 only equals 0.16. So I think it is answer 3.

Step-by-step explanation:

Answer:

5+x

Step-by-step explanation:

the variable x represents the number

five more than the number, meaning we have to add 5 to the number

5+x

Answer: x+5

Step-by-step explanation:

Answer:

Step-by-step explanation:

b,e

Answer:

0.5j+19

Step-by-step explanation:

Answer:

34

Step-by-step explanation:

We have to calculate non perfect square between [tex]17^{2}[/tex] and [tex]18^{2}[/tex]

So,

Let

17=n

18=n+1

Non perfect square between two number can be calculated as :

2n

2× 17=34

Therefore there are  34 non perfect numbers between  [tex]17^{2}[/tex] and [tex]18^{2}[/tex]

Answer:

hear is your required answer

Answer:

please see the image given above. hope this helps

Answer:

$638.4

Step-by-step explanation:

Randy's gross salary (salary without any deduction) = $760

taxed rate =16%

Amount tax paid =tax% of gross income

=16/100 * $760

=$16*760/100

=$12160/100

=$121.6

net salary = gross salary - tax paid

=$760 - $ 121.6

=$638.4

Randy's net salary is $638.40

Randy's gross salary = $760 per week.

Tax paid on his salary = 16%

Net salary is the difference between the salary earned and the amount paid as tax. This will be:

= Salary - Tax

= $760 - (16% × $760)

= $760 - (0.16 × $760)

= $760 - $121.60

= $638.40

Read related link on:

https://brainly.com/question/23421215

Answer:

B. $2.42

Step-by-step explanation:

If Liam gave the clerk three $10 bills, that means he gave the clerk $30. This is because 3 times 10 equals 30.

Find how much change he will receive by subtracting $27.58 from the $30 that Liam gave to the clerk:

30 - 27.58

= 2.42

So, Liam will receive $2.42 in change.

The correct answer is B. $2.42

Answer:

 2.42

Step-by-step explanation:

3 ten dollar bills = 3*10 = 30 dollars

Subtract the cost of pizza and wings

30 - 27.58

Line up the decimals

 30.00

- 27.58

----------------

  2.42

Umm, where's the question?????

Base: 3 units

Height: 5 units

Area: 15 square units

         ([tex]A=b*h=3*5=15[/tex])

hope this helps :)

Answer:

16

Step-by-step explanation:

8÷2(2+2)​

From PEMDAS, we do the equation in the parenthesis first.

8÷2(4)

Since this is division and multiplication we go left to right.

4(4)

16

Hey there!

[tex]\large\textsf{Do PEMDAS:}\\\\\\\large\textsf{Parentheses}\\\\\large\textsf{Exponents} \\\\\large\textsf{Multiplication}\\\\\large\textsf{Division}\\\\\large\textsf{Addition}\\\\\textsf{Subtraction}[/tex]

[tex]\large\textsf{8 }\mathsf{\div}\large\textsf{ 2 (2 + 2)}\\\\\large\textsf{2 + 2}\\\large\text{= \bf 4}}\\\\\large\textsf{8 }\mathsf{\div }\large\textsf{ 2(4)}\\\\\large\textsf{8 }\mathsf{\div}\large\textsf{ 2}\\\large\textsf{= \bf 4}\\\\\large\textsf{4(4)}\\\large\textsf{= \bf 16}\\\\\\\\\\\\\boxed{\boxed{\huge\textsf{Answer: \bf 16}}}\huge\checkmark[/tex]

[tex]\large\textsf{Good luck on your assignment and enjoy your day!}[/tex]

~[tex]\frak{Amphitrite1040:)}[/tex]

9514 1404 393

Answer:

  46 24/25 in

Step-by-step explanation:

Opposite pairs of sides are the same length, so the total length needed is ...

  2(8 4/5 +14 17/25) = 2(8 20/25 +14 17/25) = 2(22 37/25) = 2(23 12/25)

  = 46 24/25 . . . inches

Step-by-step explanation:

v8yviyc8yv9yv8yv8yviyv8yv8v6

Answer: b = 100

Step-by-step explanation:

simplifying

2.02b + 4.30 = 2.00b + 6.30

reorder the terms:

4.30 + 2.02b = 2.00b + 6.30

reorder the terms:

4.30 + 2.02b = 6.30 + 2.00b

solving

4.30 + 2.02b = 6.30 + 2.00b

solving for variable 'b'.

move all terms containing b to the left, all other terms to the right.

add '-2.00b' to each side of the equation.

4.30 + 2.02b + -2.00b = 6.30 + 2.00b + -2.00b

combine like terms: 2.02b + -2.00b = 0.02b

4.30 + 0.02b = 6.30 + 2.00b + -2.00b

combine like terms: 2.00b + -2.00b = 0.00

4.30 + 0.02b = 6.30 + 0.00

4.30 + 0.02b = 6.30

add '-4.30' to each side of the equation.

4.30 + -4.30 + 0.02b = 6.30 + -4.30

combine like terms: 4.30 + -4.30 = 0.00

0.00 + 0.02b = 6.30 + -4.30

0.02b = 6.30 + -4.30

combine like terms: 6.30 + -4.30 = 2

0.02b = 2

divide each side by '0.02'.

getting:  b = 100

Answer:

http://www.1728.org/compint2.htm

Principal = Total ÷ (1 + Rate) ^ years

Principal =  $8,000 / (1.04) ^ 4

Principal =  $8,000 / 1.16985856

Principal = 6,838.43

Step-by-step explanation:

Answer:

There is a sufficient evidence to support the that machine 1 has the greater variance.

Step-by-step explanation:

The question with the complete details can be found online.

Start by stating the hypotheses.

The null hypothesis states that the variance of machine 1 is less than or equal to machine 2

So, we have:

[tex]H_o: \sigma_1 ^2 \le \sigma_2 ^2[/tex]

The alternate hypothesis will then be:

[tex]H_a: \sigma_1 ^2 > \sigma_2 ^2[/tex]

So, we have:

[tex]n_1 = 25[/tex]               [tex]n_1 = 22[/tex]

Calculate the mean of Machine 1 and 2

The mean is:

[tex]\bar x =\frac{\sum x}{n}[/tex]

For machine 1, we have:

[tex]\bar x_1 =\frac{2.95+3.45+3.5+.....+3.12}{25}[/tex]

[tex]\bar x_1 =\frac{83.21}{25}[/tex]

[tex]\bar x_1 =3.3284[/tex]

For machine 2, we have:

[tex]\bar x_2 = \frac{3.22 + 3.3 + 3.34 + ..... +3.33}{22}[/tex]

[tex]\bar x_2 = \frac{72.12}{22}[/tex]

[tex]\bar x_2 = 3.2782[/tex]

Calculate the standard deviation of both machines

The standard deviation is:

[tex]\sigma = \sqrt{\frac{\sum(x - \bar x)^2}{n-1}}[/tex]

For machine 1, we have:

[tex]\sigma_1 = \sqrt{\frac{(2.95 - 3.3284)^2+(3.45 - 3.3284)^2+(3.5 - 3.3284)^2+.....+(3.12 - 3.3284)^2}{25-1}}[/tex]

[tex]\sigma_1 = \sqrt{\frac{(2.95 - 3.3284)^2+(3.45 - 3.3284)^2+(3.5 - 3.3284)^2+.....+(3.12 - 3.3284)^2}{24}}[/tex]

[tex]\sigma_1 = 0.2211[/tex]

For machine 2, we have:

[tex]\sigma_2 = \sqrt{\frac{(3.22 - 3.2782)^2+(3.3 - 3.2782)^2+(3.44 - 3.2782)^2+.....+(3.33 - 3.2782)^2}{22-1}}[/tex]

[tex]\sigma_2 = \sqrt{\frac{(3.22 - 3.2782)^2+(3.3 - 3.2782)^2+(3.44 - 3.2782)^2+.....+(3.33 - 3.2782)^2}{21}}[/tex]

[tex]\sigma_2 = 0.0768[/tex]

Calculate the degrees of freedom

[tex]df=n-1[/tex]

For machine 1;

[tex]df_1=25-1=24[/tex]

For machine 2

[tex]df_2=22-1=21[/tex]

Calculate the test statistic (t)

[tex]t = \frac{Var_1}{Var_2}[/tex]

Rewrite in terms of standard deviation

[tex]t = \frac{\sigma_1^2}{\sigma_2^2}[/tex]

[tex]t = \frac{0.2211^2}{0.0768^2}[/tex]

[tex]t = \frac{0.04888521}{0.00589824}[/tex]

[tex]t = 8.2881[/tex]

Lastly, calculate the p value.

This is the value of P(t > 8.2881) between the degrees of freedom i.e. 21 and 24

From the f distribution table

[tex]P(t > 8.2881) < 0.01[/tex]

Hence, we reject the null hypothesis

Answer:

4

Step-by-step explanation:

x(a+b)

distribute the multiplication over the addition in parentheses

ax+bx

Answer:

2/8

Step-by-step explanation:

Answer:

27/64

Step-by-step explanation:

3/4 to the second power is 9/16. 3/4 to the third power is 27/64

Answer:

Diagram 2= 5  

Diagram 3=10

Diagram 4= 15

Diagram 8 would be 35

Step-by-step explanation: