Help with this pls!!!!!!!!

Answer:

2t^2−7t−4 (b)

Step-by-step explanation:

=(2t+1)(t+−4)

=(2t)(t)+(2t)(−4)+(1)(t)+(1)(−4)

=2t^2−8t+t−4

=2t^2−7t−4

Answer:

The third one

Step-by-step explanation:

If you pay attention you will see that the < sign is pointing the wrong way on 1 and 2, while on 4 its not lower is higher

Answer:

18

Step-by-step explanation:

basic math :/

Answer:

Air And I don't know how it works for you to get the chance to see you later on today is my favorite person song is so is it the same thing happened to me and my family is doing well and you can get it

Step-by-step explanation:

Air And Noise Pollution Caused By Firecrackers Can Increase The Impact Of Pre-Existing Problems And Disorders Of Patients Related To The Heart e a beautiful w a beautiful day ahead and do it for me to do it in the sound levels can lead to marriage anniversary both of us are going to the point is that the

(a)The line of best-fit drawn intercepts the y-axis at 60.

To determine the slope, we use the points (3,65) and (8,70).

Therefore, an equation for the line in slope-intercept form is: y=x+60

(b)Since the y-intercept = 60, we have that the initial graduation rate is 60% and it increases at a rate of 1% per year.

(c)To determine the graduation rate in 2020

2020 - 1998 = 22

x=22

Therefore, the graduation rate in 2020 will be:

y=22+60

y=80%

Answer:

421.4 miles

Step-by-step explanation:

Numner of miles= ($270.79-$17.95)/86 cents

= $252.84/$0.60

=421.4 miles

Check the forward differences of the sequence.

• first-order differences

5 - 1 = 4

12 - 5 = 7

22 - 12 = 10

35 - 22 = 13

• second-order differences (i.e. differences of the first differences)

7 - 4 = 3

10 - 7 = 3

13 - 10 = 3

The second differences are all 3 (as far as we know), so the sequence of first differences is arithmetic/linear, which means the original sequence is quadratic. Let the \(n\)-th term be

\(x_n = an^2 + bn + c\)

Given that \(x_1=1\), \(x_2=5\), and \(x_3=12\), we have

\(\begin{cases} a + b + c = 1 \\ 4a + 2b + c = 5 \\ 9a + 3b + c = 12 \end{cases} \implies a=\dfrac32, b=-\dfrac12, c=0\)

and so the \(n\)-th term of the sequence is generated by the rule

\(x_n = \dfrac{3n^2 - n}2\)

which most closely resembles the last option,

Square the term number, multiply the result by 3, subtract the term number, and divide the result by 2.

218 is the difference between 456 and 238.

A number system is defined as a system of writing to express numbers.

The first number (the minuend) using the place-value blocks.  if the minuend is 456, represent it using four hundreds blocks, five tens blocks, and six ones blocks.

The second number (the subtrahend) using the place-value blocks the subtrahend is 238, represent it using two hundreds blocks, three tens blocks, and eight ones blocks.

456 - 238

Borrow 1 from 5 so number is 4 4  16 - 238=

16-8 = 8 in ones' place

4 - 3 = 1 in tens' place

4 - 2 = 2 in hundreds' place

Hence, 218 is the difference between 456 and 238.

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Answer:

Try continuity formula you get your answer

The correct simplification should be:

root(3)(x^2y^2)*sqrt(4y^2) = 2yx^(2/3) or 2yroot(3)(x^2)

The incorrect simplification among the options provided is:

root(3)(x^2y^2)*sqrt(4y^2) = 2|y|root(3)(x^2y^2)

This simplification is incorrect because the product of root(3)(x^2y^2) and sqrt(4y^2) should not result in 2|y|. Let's break down the correct simplification:

root(3)(x^2y^2)*sqrt(4y^2) can be rewritten as (x^(2/3)y^(2/3))(2y).

Now, multiplying x^(2/3) and 2y, we get 2yx^(2/3). However, in the given simplification, it states 2|y| instead of 2y. The absolute value symbol | | should not be present in this context since we are not dealing with negative numbers or absolute values.

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Let's denote the amount Jolene invested at 3 percent interest as 'x' dollars. Since she put twice as much in the lower-yielding account, the amount she invested at 9 percent interest would be '2x' dollars.

To calculate the interest earned from each account, we'll use the formula: Interest = Principal × Rate × Time.

For the 3 percent interest account:

Interest_3_percent = x × 0.03

For the 9 percent interest account:

Interest_9_percent = 2x × 0.09

We know that the total annual interest is $3120, so we can set up the equation:

Interest_3_percent + Interest_9_percent = 3120

Substituting the above equations, we have:

x × 0.03 + 2x × 0.09 = 3120

Simplifying the equation:

0.03x + 0.18x = 3120

0.21x = 3120

Dividing both sides of the equation by 0.21:

x = 3120 / 0.21

x = 14857.14

Therefore, Jolene invested approximately $14,857.14 at 3 percent interest and twice that amount, $29,714.29, at 9 percent interest.

Answer:

Step-by-step explanation:

X is the amount invested at 6%

Y is the amount invested at 9%

0.06X + 0.09Y = 4998

X = 2Y

0.06(2Y) + 0.09Y  = 4998

.12Y + 0.09Y = 4998

0.21Y = 4998

21Y = 499800

Y = 499800/21 = 23800

So X = 2*23800 = 47600

$47,600 is invested at 6% and $23800 is invested at 9%

The volume of the sphere is approximately 3431.82 cubic miles.

To find the volume of a sphere, we need the radius of the sphere. The length of a great circle is the circumference of the sphere, which is related to the radius by the formula C = 2πr, where C is the circumference and r is the radius.

In this case, we are given that the length of the great circle is 60 miles. We can use this information to find the radius of the sphere.

C = 2πr

60 = 2πr

Divide both sides of the equation by 2π:

r = 60 / (2π)

r = 30 / π

Now that we have the radius, we can use the formula for the volume of a sphere:

V = (4/3)πr³

V = (4/3)π(30/π)³

V = (4/3)π(27000/π³)

V = (4/3)π(27000/π³)

V = (4/3)π(27000/π³)

V = (4/3)(27000/π²)

V = (4/3)(27000/9.87) (approximating π to 3.14)

V ≈ 3431.82 cubic miles

Therefore, the volume of the sphere is approximately 3431.82 cubic miles.

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Question

You are given the great circle of a sphere is a length of 60 miles. What is the volume of the sphere?

Thus, 715,000 =  7.15 x 10⁵, using the concept of scientific notations, both the values are found to be equal.

The number of times that decimal point must be moved to obtain a number between 1 and 10 is the exponent in scientific notation. The decimal point is shifted to the left in order to represent this number in scientific notation.

The main goal of scientific notation is to simplify computations using numbers that are abnormally large or small. With scientific notation, every digit counts because zeros are just no longer used to denote the decimal point.

Given expression:

715,000 __ 7.15 x 10⁵

LHS = 715,000

Take the RHS value :

= 7.15 x 10⁵

This, can be simplifies as:

= 7.15 x 100,000

Now multiply the two values,

= 715,000 (RHS values)

as, LHS  = RHS

LHS = 715,000

715,000 (RHS values)

Thus, 715,000 =  7.15 x 10⁵, using the concept of scientific notations, both the values are found to be equal.

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Answer:

7. 14

15. 30

28. 56

32. 64

18 36

x 2x

1/2y. y

2x. 4x

x+3 2x+9

Step-by-step explanation:

each out is double the in

Answer:

add all of them toghether to get it

Answer:

1764

Step-by-step explanation:

Y=6b+12ab^2

Let a = 4

b = 6

Y = 6(6) +12 (4)(6)^2

   = 36 + 12 (4) (36)

   = 36+1728

   =1764

Answer:

\(\huge\boxed{\sf Y = 1764}\)

Step-by-step explanation:

\(Y = 6b+12ab^2\\\\Given \ that \ a = 4 , \ b = 6\\\\Putting \ values\ in \ given \ equation\\\\Y = 6(6) +12(4)(6)^2\\\\Y = 36 + 48(36)\\\\Y = 36 + 1728\\\\Y = 1764\\\\\rule[225]{225}{2}\)

Hope this helped!

The graph of the equations 3x + 7y < 21,  x > 0, and  y > 0 are attached

The vertices are: (0, 0), (0, 3) and (7, 0) are identified in the graph

The regions that satisfy one or more inequalities can be seen when there are inequalities on a graph.

These inequalities are frequently linear and can be represented by straight line graphs.

To solve the inequalities, plot straight line graphs with either a solid line or a dashed line using the linear equations.

A solid line indicates that the line is present.

The line is not included if it is dotted.

The graphs for the equation is plotted and attached

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Answer:

L = 9.85 cm

Step-by-step explanation:

I guess you meant length for the hypotenuse. We just apply the pythagorean theorem:

L = \(\sqrt{(4 cm)^2 + (9 cm)^2} = \sqrt{16 cm^2 + 81 cm^2} = \sqrt{97 cm^2} = (circa) 9.85 cm\)

Answer:

solutions given;

base:9 cm

perpendicular: 4 cm

hypotenuse:?

By using pythagorus law

hypotenuse^2: perpendicular^2+base^2

hypotenuse:\(\sqrt {4^2+9^2}\)

hypotenuse:9.84cm

Answer:

x = 15

Step-by-step explanation:

angle A and angle C are congruent, so the measures are the same. Set their measures equal to each other to solve for x.

4x + 12 = 72

4x + 12 - 12 = 72 -12

4x = 60

4x/4 = 60/4

x = 15

Answer:

x² + 1 = 0

a = 1

b = 0

c = 1

\(x1.2 = \frac{ - b± \sqrt{ {b}^{2} - 4ac } }{2a} \)

\(x1.2 = \frac{ - 0 ±\sqrt{ {0}^{2} - (4.1.1) } }{2.1} \)

\(x1.2 = \frac{0± \sqrt{0 - 4} }{2} \)

\(x1.2 = \frac{± \sqrt{ - 4} }{2} \)

There is no real solution because the discriminant is negative

Note.

Formula diskriminan

√b² - 4ac.

if the diskrimanan is negatif, so the quadratic equatoin dont have solution

Answer:

Starting with the equation:

(x + 1)^2 = 13/4

We can use the square root property, which states that if a^2 = b, then a is equal to the positive or negative square root of b.

Taking the square root of both sides, we get:

x + 1 = ±√(13/4)

Simplifying under the radical:

x + 1 = ±(√13)/2

Now we can solve for x by subtracting 1 from both sides:

x = -1 ± (√13)/2

Therefore, the solutions to the equation are:

x = -1 + (√13)/2 or x = -1 - (√13)/2

Step-by-step explanation:

Answer:

undefined

0

Step-by-step explanation:

like some previous questions

Answer:

3 ÷ 0 - undefined

⁰/6 = 0

Step-by-step explanation:

Any number multiplied by 0 is 0 and so this time every number solves the equation instead of there being a single number that can be taken as the value of 00. In general, a single value can't be assigned to a fraction where the denominator is 0 so the value remains undefined.

Answer: number 3

Step-by-step explanation:

Answer:

Below

Step-by-step explanation:

Area = 1/2 base * h        and base + h = 20   ( then  base = 20-h)

Area = 1/2 (20-h) *h  

             -1/2 h^2 + 10h     <=== you could graph this to see the maximum or:

     max occurs at     (for a quadratic)  h =   -b/2a =  -10/(2 *-1/2) = 10

              then base = 20 -10 = 10   also

base = 10    height = 10

Step-by-step explanation:

it seems you solved the tricky part yourself already.

just to be sure, let's do the first derivative here again.

the easiest way would be for me to simply multiply the functional expression out and then do a simple derivative action ...

f(t) = (t² + 6t + 7)(3t² + 3) = 3t⁴ + 3t² + 18t³ + 18t + 21t² + 21 =

= 3t⁴ + 18t³ + 24t² + 18t + 21

f'(t) = 12t³ + 54t² + 48t + 18

and now comes the simple part (what was your problem here, don't you know how functions work ? then you are in a completely wrong class doing derivatives; for that you need to understand what functions are, and how they work). we calculate the function result of f'(2).

we simply put the input number (2) at every place of the input variable (t).

so,

f'(2) = 12×2³ + 54×2² + 48×2 + 18 = 96 + 216 + 96 + 18 =

= 426

Answer:

C

Step-by-step explanation:

I took the test and i got it correct

The measure of the inscribed angle G in the circle is 85 degree.

An inscribed angle is simply an angle with its vertex on the circle and whose sides are chords.

The relationhip between an an inscribed angle and intercepted arc is expressed as:

Inscribed angle = 1/2 × intercepted arc.

Since the circle equals 360 degrees, we can determine the intercepted arc DF.

Hence:

Arc DF = 360 - ( 70 + 120 )

Arc DF = 360 - 190

Arc DF = 170°

Now, plug the value into the above formula:

Inscribed angle = 1/2 × intercepted arc.

Inscribed angle G = 1/2 × 170°

Inscribed angle G = 85°

Therefore, angle G has a measure of 85 degree.

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Answer:

304oz

Step-by-step explanation: