Note: Enter your answer and show all the steps that you use to solve this problem in the space provided. Solve 2s^3 - 4r^2 = if r = 1 and s = 5

Answers

Answer 1

The Value of the expression 2s³ - 4r² by substituting the given values into the expression is 246

Given the equation ; 2s³ - 4r²

Value of r = 1 ; value of s = 5

To solve, substitute the values of r and s into the equation :

2(5)³ - 4(1)²

2(5 × 5 × 5) - 4(1 × 1)

2(125) - 4(1)

250 - 4

= 246

Therefore, the final value of the expression by substituting the value of r and s as 1 and 5 respectively is 246

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Related Questions

How do you solve this problem? 7/10 x 1 1/3

Answers

Answer:

77/30

Step-by-step explanation:

7/10 x 11/3 = 7x11 = 77 and 10x3 = 30

the answer is 77/30

The answer is 2.56666667. All u have to do is multiply 7/10 by 11/3.

The area, A, of a square with a side of length x is given by A = x^2? Use this relationship to verify that doubling the length of the side of a square floor increases the area of
the floor by a factor of 2^2

Answers

Answer:

Hi

Step-by-step explanation:

[tex](\sqrt{2}-3i)(\sqrt{2}-5i)[/tex] plz simplify

Answers

2-3i square root of two -5i

Answer:

-5i

Step-by-step explanation:

Plz answer this as well. Thankyou.

Answers

Answer:

21

Step-by-step explanation:

(-5-2)(-3)

= (-7)(-3)

=21

I need help with this geometryyyy workkk

Answers

Answer:

Perpendicular

Step-by-step explanation:

For this problem, it is important to note two things.  One line is completely vertical, and the other line is completely horizontal.

The line y=9 is completely horizontal at the y-value at 9.  The line x = 2 is completely vertical at the x-value at 2.

Hence, these two lines would be perpendicular.

Cheers.

Answer:

Perpendicular.

Step-by-step explanation:

Since it makes a huge cross +, which we want it to be, we need the lines to intercept and it makes a right angle. That means it is perpendicular.

2. Lenny is making pasta for dinner. The recipe calls for 3 cups of sauce to serve 15
people. If Lenny serves 60 people, how many cups of sauce does he need?

Answers

3 cups= 15 people
60/15= 4
4*3=12

Lenny needs 12 cups of sauce

What is the solution set for −4x+10≥5x+55?

Answers

Answer:

Step-by-step explanation:

-4x + 10 ≥ 5x + 55

-9x + 10 ≥ 55

-9x ≥ 45

x ≤ -5

An investor purchased a house 8 years ago for ​$48,000 This year it was appraised at ​$73,500 Complete parts​ (a) through​ (d) below. ​(a) A linear equation V=mt+b,0

Answers

Answer:

b = $48000, m = $3187.5 / year

Step-by-step explanation:

The equation of a linear function is given as y = mx + b, where m is the rate of change, b is the value of y when x = 0, y = dependent variable and x = dependent variable.

Given that V = mt + b:

b = initial price of the house at 0 years = $48000

V = mt + 48000, At 8 years the house is appraised at ​$73,500

73500 = 8m + 48000

8m = 73500 - 48000

8m = 25500

m = 3187.5

Jane has bought 10 pounds of dog food. She feeds her dog 2/5 pounds for each meal. For how many meals will the food last? Write your answer in simplest form.

Answers

Answer:

25 meals

Step-by-step explanation:

All you have to do is divide 10 ÷ 2/5 and you'll get 25 :)

Find the distance between the points (0,2)and (-5,-9)The answer must be a whole number or a fully simplified radical expression do not round up

Answers

Answer:

The answer is

[tex]\sqrt{146} \: \: \: units[/tex]

Step-by-step explanation:

The distance between two points can be found by using the formula

[tex]d = \sqrt{ ({x1 - x2})^{2} + ({y1 - y2})^{2} } \\ [/tex]

where

(x1 , y1) and (x2 , y2) are the points

From the question the points are

(0,2)and (-5,-9)

The distance is

[tex]d = \sqrt{( {0 + 5})^{2} + ({2 + 9})^{2} } \\ = \sqrt{ {5}^{2} + {11}^{2} } \\ = \sqrt{25 + 121} \\ = \sqrt{146} [/tex]

We have the final answer as

[tex] \sqrt{146} \: \: \: units[/tex]

Hope this helps you

Answer:

ok. i have solved. u can have a look .

Sal, John and Desmond have formed a partnership. The total investment was $750,000.
Sal owns 40% and John owns 25% of the partnership. How much did Desmond invest?

Answers

Desmond invest 35 %

If mZDEF = (7x + 4)", mZDEG = (5x + 1)', and mZGEF = 23", find each
measure.
E
F
D
Angle DEF -
What is x?

Answers

Answer:

Yoy answer is x=10

Step-by-step explanation:

We already know what ∠GEF is 23°

so you would have to create an equation like this [tex]23+(5x+1)=7x+4[/tex]

you add 23+1=24 and get [tex]5x+24=7x+4[/tex] subtract 5x on both sides

[tex]24=2x+4[/tex] subtract 4 on both sides

[tex]20=2x[/tex] divide 2 x=10

∠DEF=7(10)=70+4=74

∠DEG=5(10)=50+1=51

To check 51+23=74

2xy when x = 5 and y = -3

Answers

Answer:

the answer is -30

Step-by-step explanation:

2xy=2*5*-3

= -30

The value of the expression 2xy will be -30.

What is an expression?

Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.

Given expression is 2xy and x = 5 y = -3. To calculate the value put the value of x and y in the expression.

2xy=2 x 5 x -3

2xy= - 30

Therefore, the value of the expression 2xy will be -30.

To know more about an expression follow

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Solve 3(x + 6) - 2(x - 2) ≥ 10

Answers

Answer: x ≥ -12

Step-by-step explanation:

Step 1: Simplify both sides

x+22 ≥ 10

Step 2: Subtract 22 from both sides

x + 22 −22 ≥ 10 −22

Your answer should be

x ≥ −12

Answer:

[tex]x \geqslant - 12[/tex]

Step-by-step explanation:

Please see the attached picture for full solution.

i need a step by step explanation of how to solve this

Answers

Answer: x = 6

Step-by-step explanation:

Subtract 8 on both sides. The new equation should be -2x = -3x + 6.Now, add 3x on both sides. It should give you x = 6.

1. Which of the following is an equation for the
inverse of the function f(x)
3x + 1 ?

Answers

Answer:

f^-1(x)=x/3-1/3

Step-by-step explanation:

Jackson was selling cups of lemonade. On Saturday, he sold a total of 14 cups. On Sunday he sold cups at a steady rate of 3 cups per hour. Set up and solve an equation to find how many hours, h, it took Jackson to sell 47 cups (including those from Saturday).

Answers

Answer:

(47-14) h ÷ 3 =11

Step-by-step explanation:

47-14=33

33 divided by 3 is 11

Jackson takes 11 hours to sell 47 cups.

How to form an equation?

Determine the known quantities and designate the unknown quantity as a variable while trying to set up or construct a linear equation to fit a real-world application.

In other words, an equation is a set of variables that are constrained through a situation or case.

Let's say the number of hours that Jackson sold his cups on Sunday.

Now,

Saturday cups + Sunday cups = Total cups.

14 + 3x = 47

3x = 33

x = 11

Hence "Jackson takes 11 hours to sell 47 cups".

For more about the equation,

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Please help !!!!!!Asap!!

Answers

Answer: x=7, EF=12, FG=15

Step by Step:
(4x-16) + (3x-6) = 7x-22
7x-22=27
7x=27+22
7x=49
x=7

4(7)-16= 12
3(7)-6=15

A basketball player averages 12.5 points per game. There are 24 games in a season. At this rate, how many points would the player score in an entire season?

Answers

Answer:

300

Step-by-step explanation:

hope this helps

What is the value of n in the equation

Answers

u didn’t include any equation

If n represents a number then write an expression for two less than one fourth of n

Answers

Answer:  [tex]\frac{1}{4}n-2[/tex]

This is the same as [tex]\frac{n}{4} - 2[/tex] and it is also equivalent to [tex]0.25n-2[/tex]

=====================================================

Explanation:

n is some placeholder for a number

one fourth of that number is [tex]\frac{1}{4}n[/tex] which is the same as [tex]\frac{n}{4}[/tex] or [tex]0.25n[/tex] since 1/4 = 0.25

From here, we subtract off 2 to get [tex]\frac{1}{4}n-2[/tex] as one possible final answer.

Suppose that 14 inches of wire costs 70 cents. At the same rate, how many inches of wire can be bought for 35 cents?​

Answers

Answer:

7

Step-by-step explanation:

35x2=70 14/2=7

Jason paid $9 for 20 erasers. If the price of each
eraser was decreased by $0.15, how many
erasers could he have bought for the same
amount of money at the new price?
erasers

Answers

the answer would be 45 cents per each eraser

A city has h a population of 2549786 people

Answers

Step-by-step explanation:

Braziliannngffcghjhhb

hgg

about what is 4/5+8/9

Answers

Answer:

1.688 the 8 will keep repeating

Step-by-step explanation:

Answer:

76/45 or 1.69 (rounded)

Step-by-step explanation:

First, you want to find the LCM (Lowest Common Multiple) of the two fractions.

Here, the LCM would be 45 (5*9).

So the fraction would become:

[tex]\frac{4*9}{45} + \frac{8*5}{45} \\\\\frac{36+40}{45} \\\\\frac{76}{45}[/tex]

a1= -26. d= 200
a(n)= ?

Answers

Answer:

a(n) = -26+(200n-200)

Step-by-step explanation:

The formula for arithmetic series is "Tn=a+(n-1)d

Then,the elements in the formula are substituted with numbers.i.e Tn= -26+(n-1)200.

therefore,Tn= -26+(200n-200)...

Nb: This answer is Subjected to review, thanks.

Solve with Foil, and show work (4x+3) (5x-4)

Answers

Answer:

[tex]20x^{2} + 12x -28[/tex]

Step-by-step explanation:

(4x+3) (5x-4)

= [tex]20x^{2} -16+15x-12[/tex]

 (multiply 4x with (5x-4) and multiply 3 with (5x-4) )

= [tex]20x^{2} + 12x -28[/tex]

 (rearrange the numbers and subtract 12 from -16)

Steven wants to buy a $590 bicycle. Steven has no money saved, but will be able to deposit $50 into a savings account when he receives his paycheck each Friday. However, before Steven can buy the bike, he must give his sister $60 that he owes her. For how many weeks will Steven need to deposit money into his savings account before he can pay back his sister and buy the bike?

Answers

Answer:

13 weeks

Step-by-step explanation:

Add 590 and 60 together and then divide by 50 and you'll get 13

A truck can be rented from company A for $130 a day plus $0.20 per mile. Company B charges $50 a day plus $0.60 per mile to rent the same truck. Find the number of miles in a day at which the rental costs for company A and company B

Answers

Answer:

200 miles

Step-by-step explanation:

Company A

Daily charge = $130Per mile = $0.20x miles per day = 130 + 0.2x

Company B

Daily charge = $50Per mile = $0.60x miles per day = 50 + 0.6x

Assume x miles that makes same amount for both options, then:

130 + 0.2x = 50 + 0.6x0.6x - 0.2x = 130 - 500.4x = 80x = 80/0.4x = 200 miles

Please help! I dont understand this, I will give 15 points!

Answers

Answer:

Step-by-step explanation:

common denominator is the multiplication of the two denominator or the least common multiple of the two

                    common denominator 24              10                 12

13/24 +7/12                   ☑ ☑

7/6+(-5/12)                                                                                  ☑  ☑

-3/4+(-2/3)                                                                                  ☑  ☑

5-7/10                                                                     ☑  ☑

1/8 - 5/3                          ☑  ☑

3/2 - 4/5                                                                  ☑  ☑

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