find the vertex of the parabola represented by the function f(x)= -2x^2

Answer:

additive inverse

Step-by-step explanation:

-7 is the inverse of 7 so adding it would cancel it out making it 0

Answer:

2.28%

Step-by-step explanation:

We have that the mean (m) equals 23 and that the standard deviation (sd) is 7.

We can calculate the value z and in this way we can calculate the probability in this case with the calculation of the normal distribution table:

z = m - x / sd

we know that x is 37, replacing:

z = (23 - 37) / 7

z = -2

according to the normal distribution table the value of z = -2, is equivalent to 0.0228

So the probability is 2.28%

Answer:

2

Step-by-step explanation:

For these type of problems try your best to remove the exponents and fractions.

Answer:

In the simplest meaning, you have:

Residual (e) = Observed value (y) - Predicted value (y')

Here, observed value y has been provided in table.

The predict value y' is calculated based on the linear regression model shown in your picture: y = 0.161x + 0.748, by substitute x into this model, you obtain the predict value y'.

x = 1.11, 18, 21.9, 18, 16.7, 20, 15.5, 19.5

=> Corresponding y' would be:

y' = 0.93, 3.65, 4.27, 3.65, 3.44, 3.97, 3.24, 3.89

From the table, you have corresponding observed value y:

y = 0.7, 4, 3.69, 3.8, 3.21, 4, 3.92, 3.77

=> Subtract y to y', you obtain the corresponding residual e:

e = -0.23, 0.35, -0.58, 0.15, -0.23, 0.03, -0.68, -0.12

Plot vector e on y axis, and vector x on x-axis respectively, you got the residual plot

Hope this helps!

:)

Answer:

E) -0.23, 0.35, -0.58, 0.15, -0.23, 0.03, -0.68, -0.12

F) on the horizontal axis, take the x values and on the vertical axis, take residuals

Step-by-step explanation:

Given:

y = 0.7, 4, 3.69, 3.8, 3.21, 4, 3.92, 3.77

Using the regression equation:

y' = 0.93, 3.65, 4.27, 3.65, 3.44, 3.97, 3.24, 3.89

Residuals: y - y'

-0.23, 0.35, -0.58, 0.15, -0.23, 0.03, -0.68, -0.12

Answer:

276

Step-by-step explanation:

Answer:

Volume Con = pi x radius^2 x h/3

Volume Sphere = 4/3 x pi x radius^3

Step-by-step explanation:

Volume of shape = Volume of Cone + 1/2 x Volume of  Sphere

Volume of shape = pi x radius^2 x h/3 +1/2 (4/3 x pi x radius^3)

Volume = (3.14 x 39^2 x (81-39)/3) + 1/2(4/3 x 3.14 x 39^3)

Volume = (3.14 x 1521 x 14) + 1/2 (4/3 x 3.14 x 59319)

Volume = (66863.2) + (124174.4)

Volume = 191037.6

Volume = 191038 cubic ft

Answer:

you need a d/protector to do this

Step-by-step explanation:

Answer:

i think the answer should be 60 ft long bc that would leave 10ft on each side of the banner

Step-by-step explanation:

hope this helps

Answer:

Binomial

Step-by-step explanation:

It has 2 terms in the expression

Answer: quadratic polynomial

Step-by-step explanation:

A quadratic polynomial is a polynomial of degree 2. A univariate quadratic polynomial has the form f(x)=a_2x^2+a_1x+a0. An equation involving a quadratic polynomial is called a quadratic equation. A closed-form solution known as the quadratic formula exists for the solutions of an arbitrary quadratic equation.

Answer:

3[tex]\sqrt{3}[/tex]

Step-by-step explanation:

Using Pythagoras' identity on the right triangle.

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides.

let x be the length of the other leg, then

x² + 3² = 6², that is

x² + 9 = 36 ( subtract 9 from both sides )

x² = 27 ( take the square root of both sides )

x = [tex]\sqrt{27}[/tex] = [tex]\sqrt{9(3)}[/tex] = [tex]\sqrt{9}[/tex] × [tex]\sqrt{3}[/tex] = 3[tex]\sqrt{3}[/tex] ← exact value

Answer:

csc x = - [tex]\frac{5}{3}[/tex]

Step-by-step explanation:

Using the trigonometric identity

csc²x = 1 + cot²x

         = 1 + (- [tex]\frac{4}{3}[/tex] )² = 1 + [tex]\frac{16}{9}[/tex] = [tex]\frac{25}{9}[/tex], thus

csc x = ± [tex]\sqrt{\frac{25}{9} }[/tex] = ± [tex]\frac{5}{3}[/tex]

Since 270° < x < 360° where csc x < 0 , then

csc x = - [tex]\frac{5}{3}[/tex]

Answer:

-1220703125

Explanation:

The 14th term of the geometric sequence 1 , − 5 , 25 , . . . is (5)¹⁴ after using the geometric sequence formula.

It is defined as the systematic way of representing the data that follows a certain rule of arithmetic.

It is given that:

The sequence is:

1 , − 5 , 25 , . . .

The above sequence represents a geometric sequence.

Divergent sequences are those in which the terms never stabilize; instead, they constantly increase or decrease as n approaches infinity,

approaching either infinity or -infinity.

The common ratio = -5/1  = -5

The nth term a(n) = arⁿ⁻¹

The first term a = 1

The nth term a(n) = (5)ⁿ⁻¹

Plug n = 14

The 14th term a(14) = (-5)¹⁵⁻¹

The 14th term a(14) = (5)¹⁴

Thus, the 14th term of the geometric sequence 1 , − 5 , 25 , . . . is (5)¹⁴ after using the geometric sequence formula.

Learn more about the sequence here:

brainly.com/question/21961097

#SPJ2

Answer:

48÷3=16

Step-by-step explanation:

In the expression, 96 divided by 8 = a , the quotient a =12

. Divide 12 lizards into 6 equal groups. How many lizards are in each group?

There are2

lizards in each group.

Answer:

1.    16

2.   6

3.    2

Step-by-step explanation:

Answer:

(A)James is correct.There are fewer rows, so there will be more in each row. There will be  12 jelly beans in each row for 2 equal rows, and 8 jelly beans in each row for 3 equal rows.

Step-by-step explanation:

James is putting 24 jelly beans into equal rows.

If he puts the jelly beans in 2 equal rows:

Number in each row=24/2=12 jelly beans per row.

If he puts the jelly beans in 3 equal rows:

Number in each row=24/3=8 jelly beans per row.

Therefore, James is correct.There are fewer rows, so there will be more in each row. There will be  12 jelly beans in each row for 2 equal rows, and 8 jelly beans in each row for 3 equal rows.

The correct option is A.

Answer:

It is important for bob to keep the receipt and record in the register so he can monitor how much money he has in the account. It prevents being overdrawn. Recording debits and deposits helps with budgeting.

Answer:

Step-by-step explanation:

In slope and intercept form it is going to be in form y=mx+c where m is the slope and c is the intercept

3x+4y=12

4y=-3x+12

Making y subject of the formula by dividing all through by 4

y=-3x/4 + 12/4

y=-3x/4 + 3

This is the equation in slope and intercept form

Answer:

m∠QPR = 20°

Step-by-step explanation:

If we make a sketch of the triangle, it will be observed, that line R bisects angle P.

Considering Triangle, ΔQPS;

∠QPS=107∘

Considering triangle, QPR;

∠QPR=9x-115∘

Considering triangle, RPS;

∠RPS=4x+27∘

Thus, ∠RPS + ∠QPR = ∠QPS

4x+27° + 9x-115° = 107°

13x - 88° = 107∘

13 x = 107∘ + 88∘

13x = 195°

x = 195°/13

x = 15°

m∠QPR = 9x - 115°

= (9 x 15) - 115°

= 135° - 115°

= 20°

Therefore, m∠QPR = 20°

Answer:

1230.88

Step-by-step explanation:

Volume= pi(r^2)h

Volume=3.14(49)(8)

Volume=1230.88

Answer:

185.68 for perimeter

1652.16 for area

Step-by-step explanation:

Please give me brainliest i hope you do well.!

Answer:

x=13 and y =6

Step-by-step explanation:

y=x-7

y=6

Substitute y=6 into the first equation

6 = x-7

Add 7 to each side

6+7= x-7+7

13 = x

x=13 and y =6

Answer:

5

Step-by-step explanation:

The first number before the x is the slope which is the quotient of the rise and the run of the line. The number after the x is where the line intercepts the y axis which is called the y intercept.

Answer:

m= 5

Step-by-step explanation:

The line is in slope-intercept form

y=mx+b

where m is the slope and b is the y-intercept

We have the line:

y=5x-1

5 is the coefficient that comes before x, therefore 5 is the slope.

The constant being subtracted, -1, is the y-intercept

Therefore: m=5 and b=-1

The slope is 5

Answer:

The representative sample contained more girls than boys.

Step-by-step explanation:

A "sample" of something is a small part of it. A "representative sample" is a small part of the students that represents them all. A random sample would not include all 160 students. It is more likely that there would be more girls than boys, than more boys than girls. In total, there are more girls than boys: 95 girls to 65 boys. It is more likely that a sample of the total students would be just like the total, but smaller.

Kind of need a picture to help answer the question.

Answer:

X=1

Step-by-step explanation:

6x+2=9x-1

-6x on both sides

2=3x-1

+1 on both sides

3=3x

/3 on both sides

1=x

Flip

X=1

Answer:

in the step by step

Step-by-step explanation:

1-I could tell by matching the width of the rectangle with the circumference of the lid. The width would wrap perfectly around the circle if it is the same length at the circumference.

2-The width would be different because the width is equal to the circumference.

3-First, I would find the circumference. I would do 2(h)*pi to find the circumference. I would draw two circles with this circumfrence, then I would put a rectangle in between the circles with the height as the height of the cylinder and the width as the circumference.

Answer:

$0.60

Step-by-step explanation:

30/50=60/100=0.60

If its correct, can you give me brainiest

Answer:

25.1

Step-by-step explanation:

1. Find the radius of the inner circle

(the formula for the circumference of a circle is [tex]C=2\pi r[/tex])

To find the radius of the inner circle, you would plug in the given information so that your equation looks like this:

[tex]22=2(\frac{22}{7} )r[/tex]

then solve for [tex]r[/tex]

[tex]r=3.5[/tex]

2. add [tex]4[/tex] to the radius of the inner circle

[tex]3.5+4=7.5[/tex]

3. find the circumference of the outer circle using [tex]7.5[/tex] as the radius

[tex]C=2(\frac{22}{7})7.5[/tex]

[tex]C=47.1[/tex]

4. Subtract the circumference of the inner circle from the circumference of the outer circle

[tex]47.1-22=25.1[/tex]