Mathematics High School

What is the value of this expression when a = 2 and b = -3?
a^3-b^3/5

What Is The Value Of This Expression When A = 2 And B = -3? A^3-b^3/5

Answers

Answer 1

Answer:

7

Step-by-step explanation:

substitute the numbers into the equation

2³-(-3)³/ 5

simplify and solve the cubed numbers

8 - (-27) / 5

35/5 = 7

Related Questions

Who is better Eddie Vr or Josh Dub​

Answers

answer : josh dub

no explanation

QUICK HELP!! 50 POINTS!!
Find the value of x.

x=

Answers

Answer:

x = 14

Step-by-step explanation:

These angles are complementary angles, meaning they have a sum of 90°.

4x + 1 + 2x + 5 = 90

6x + 6 = 90 (Added like terms.)

6x = 84 (Subtracted 6 on both sides.)

x = 14 (Divided 6 on both sides.)

[tex]\sf \longmapsto \: (4x + 1) + (2x + 5)[/tex]

It has a sum of 90 as the given angles are complementary angles.

[tex]\sf \longmapsto \: 4x + 1 + 2x + 5 = 90[/tex]

[tex]\sf \longmapsto4x + 2x + 1 + 5 = 90[/tex]

[tex]\sf \longmapsto6x + 6 = 90[/tex]

[tex]\sf \longmapsto6x = 90 - 6[/tex]

[tex]\sf \longmapsto \: 6x = 84[/tex]

[tex]\sf \longmapsto \: x = \cancel\dfrac{84}{6} [/tex]

[tex]\sf \longmapsto \: x = 14[/tex]

[tex] \boxed{\sf \boxed {{ \sf \red{\: x = 14 }}}}[/tex]

The slope is 3 true or false?

Answers

Answer:

The slope IS NOT 3.

So the statement is FALSE.

Step-by-step explanation:

y = mx + b

If we change the graph shown into the format shown above it would be:

y = 1x - 3

mx = slope

Slope = 1x

b = y-intercept

b = -3

To find the slope you must do:

[tex]\frac{y}{x} =\frac{RISE}{RUN}[/tex]

y = rise

x = run

In the graph shown, the points are going up and shift to the right 1 unit.

So the slope is: 1x

Therefore, the statement, "The slope is 3" is actually false.

A line passes through the point (–2, 7) and has a slope of –5.

What is the value of a if the point (a, 2) is also on the line?
A: –7
B: –1
C: 1
D: 7

Answers

Answer:

a

Step-by-step explanation:

A is the answer fashow shawty

The dimensions of a rectangular monitor screen are such that it's length is 5 in. More than it's width. If the length were doubled and if the width were deceased by 1 in the area would be increased by 170 in^2. What are the length and width of the screen?

Answers

Given:

Length of a rectangular monitor screen is 5 in more than it's width.

If the length were doubled and if the width were deceased by 1 in the area would be increased by 170 in².

To find:

The length and width of the screen.

Solution:

Let width of the screen be x inches.

Length of a rectangular monitor screen is 5 in more than it's width. So,

Length of screen = (x+5) inches

Area of screen is

[tex]Area=length\times width[/tex]

[tex]A_1=(x+5)\times x[/tex]

[tex]A_1=x^2+5x\text{ in}^2[/tex]

If the length were doubled and if the width were deceased by 1 in the area would be increased by 170 in².

New length = 2(x+5) inches

New width = (x-1) inches

So, new area is

[tex]A_2=2(x+5)(x-1)[/tex]

[tex]A_2=(2x+10)(x-1)[/tex]

[tex]A_2=2x^2+10x-2x-10[/tex]

[tex]A_2=2x^2+8x-10 \text{ in}^2[/tex]

Area increased by  170 in².

[tex]A_2-A_1=170[/tex]

[tex](2x^2+8x-10)-(x^2+5x)=170[/tex]

[tex]2x^2+8x-10-x^2-5x=170[/tex]

[tex]x^2+3x-10=170[/tex]

Subtract 170 from both sides.

[tex]x^2+3x-10-170=0[/tex]

[tex]x^2+3x-180=0[/tex]

Splitting the middle term, we get

[tex]x^2+15x-12x-180=0[/tex]

[tex]x(x+15)-12(x+15)=0[/tex]

[tex](x+15)(x-12)=0[/tex]

[tex]x=-15,12[/tex]

Width cannot be negative. So, x=12.

Width = 12 inches

Length = 12+5 = 17 inches

Therefore, the length of screen is 17 inches and width is 12 inches.

Students in the sophomore class were asked whether they preferred vanilla or chocolate
Ice Cream
Frequency
Vanilla
50
Chocolate
30
6. What is the relative frequency of sophomores chose chocolate?
7. What is a probability distribution for this data?:

Answers

are you asking for the percentage?

Which expression has a value of -5?
A
15 = 3
B
-25-5
100 = -20
-20 = 5

Answers

-20=5 trust audhebsjsbsb
D: -20 = 5

i hope I helped ya!

Translate the sentence into an equation.

The sum of 4 times a number and 7 equals 5.

Use the variable w for the unknown number.

Answers

Answer:

4w +7 = 5

Step-by-step explanation:

Have a nice day.

Answer:

4w + 7 = 5

Step-by-step explanation:

"sum" means addition (+), so we're to add two items:

item 1 to be added

"4times a number" means multiplication(x) of 4 and w(because w stands for the unknown number).

Therefore, 4 x w = 4w

item 2 to be added

This is the number 7

The sum

4w + 7

Now, the sum, equals(=)  the number 5, therefore answer:

4w + 7 = 5

What is the simplified expression for the expression below?
-1(2x + 3) – 2(x - 1)
0 4x + 1
-4X-2
-4x+2
-4x - 1
I need help ASAP !!! Timed test

Answers

I think it is -4x -1?
Yeah it is the last one

2(x+3)=x-4
Anyone know the answer please lol

Answers

Answer:

The Answer is -10.

mark this answer as BRAINLIEST answer. And I hoped this helpful for you....

Thank you ☺️☺️

Lets solve your equation step-by-step

2(x+3)=x-4

Step 1 :Simplify both sides of the equation

2(x+3)=x-4

(2)(x)+(2)(3) =x+-4 (distribute)

2x+6=x+-4

2x+6=x-4

Step 2: Subtract x from both sides

2x+6-x=x-4-x

x+6=-4

Step 3: Subtract 6 from both sides

x+6-6=-4-6

Answer: x=-10

PLEASE MARK ME AS BRAINLIEST !!

14 subtracted from the difference of x and 3*
O 14-(x-3)
O 14+ (x - 3)
(x + 3) - 14
O (x - 3) - 14

What’s the answer??

Answers

I think it’s the last one. If not, then the first

Answer:

of

(4×3) =13(6×3) =20 (2×3) = 6 (3×3) =9

Step-by-step explanation:

maaf ya kalo jawaban nya salah

Find the slope of
(-16,3), (13,8)

Answers

Answer:

= 5/29

Step-by-step explanation:

We can use the slope formula to find the slope

m = ( y2-y1)/(x2-x1)

    = ( 8-3)/(13 - -16)

    = ( 8-3)/( 13+16)

   = 5/29

Solving a linear equation: Your hourly wage is $9.75 per hour plus
$0.80 for each unit you produce. How many units
must you produce in 1 hour so that your hourly wage
is $19.35?

Answers

Answer:

You must produce 12 units

Step-by-step explanation:

19.35 - 9.75=9.60

9.6/0.8=12

Answer:

the answer is 12 units  

Step-by-step explanation:

u get 9.75 an hour and 0.80 for every unit so subtract 9.75 from 19.35 and u get 9.60 now divide that by 0.80 and u  get 12 units

what ordered pair would describe each intersection?
y=8-X and y=5X-40​

Answers

Answer:

(8, 0 )

Step-by-step explanation:

Given the 2 equations

y = 8 - x → (1)

y = 5x - 40 → (2)

Substitute y = 5x - 40 into (1)

5x - 40 = 8 - x ( add x to both sides )

6x - 40 = 8 ( add 8 to both sides )

6x = 48 ( divide both sides by 6 )

x = 8

Substitute x = 8 into either of the 2 equations and solve for y

Substituting into (1)

y = 8 - 8 = 0

Solution is (8, 0 )

Huh ? Wut? Eh? I can’t understand help me tho

Basic math equations and calculations play an important role in many jobs tasks. If you were working at a grocery store and your cash register was not automatically calculating the 20% off sale on someone's cereal--how would you solve this issue from the options listed below? If the cereal was normally $2.88, I would... 1 point Take $2.88 and times it by 80 for a sale price of $2.30. Subtract $0.20 for a sale price total of $2.68. Divide 20 from $2.88 for a sale price total of $0.15.

Answers

Given :

Price of cereal without off, C = $2.88 .

Percentage off, P = 20% .

To Find :

Price after applying 20% off.

Solution :

Final price = Initial price - 20 % of initial price

[tex]F = 2.88 - 2.88\times \dfrac{20}{100}\\\\F=2.88-0.576\\\\F=\$ 2.304[/tex]

Therefore, final price after sale is $2.304 .

Hence, this is the required solution.

-0.4 divided by 0.25

Answers

The answer to your question is -1.6

6. In the quadratic equation x2 + 8x - 2 = 0, what are the values of a, b, and c?
a. a = 0, b = 3, C = -1
c. a = -3, b = 0, C = -1
b. a = 1, b = 8, C = -2
d. a = 3, b = 0, C = 1​

Answers

Step-by-step explanation:

letter b ang sagot sa number 6

-2.25x+8.75x+10-20 solve x pls

Answers

Answer:

im gonna assume the 10 - 20 is what the equation is = to if not x wouldnt be = to anything x = -1.5

Step-by-step explanation:

-2.25x + 8.75x = 10-20

-2.25x+ 8.75x = -10

6.50x = -10 divide both sides by 6.5

x = -1.5

1. Tommy washes the neighbors' windows to earn money.
He earns $63 for 6 hours of washing windows.
a. At what unit rate (dollars/hour) does Tommy get paid?
b. Complete the table to show how much he earns for various numbers of hours of washing
windows
Time (hours)
Earnings ($)
2
6
63
10

Answers

Answer:

divide 63 by 6 with is 10.50 so he earns 10.5 dollars the hour then if he works 2 hours just multipley 10.5 by 2

Find the distance between the two numbers on a number line . -2.2,8.4

Answers

Answer:

10.6

Step-by-step explanation:

To find the difference between 2 numbers, subtract the bigger one from the smaller one. In this case, 8.4-(-2.2) = 8.4 + 2.2 = 10.6

A triangle has side lengths of (8.5q+1.6r)(8.5q+1.6r) centimeters, (3.5q-4.1s)(3.5q−4.1s) centimeters, and (4.4s+5.8r)(4.4s+5.8r) centimeters. Which expression represents the perimeter, in centimeters, of the triangle?

Answers

Answer:

7.4r+0.3s+12q

Step-by-step explanation:

I am in 8th grade and we do these problems for honors algebra and if you add (8.5q+1.6r)+(3.5q-4.1s)+(4.4s+5.8r) you will get the answer above

-10(-5c+4c+7)-3c simple terms

Answers

true answer isssssss 7c-70

Step-by-step explanation:

50c -40c-70-3c

the answer is 7c - 70

4 ( g + 5 ) + 2 ( g + 3 )

Answers

Answer:

[tex]g = - \frac{13}{3} [/tex]

Step-by-step explanation:

4g+20+2g+6=0

6g=-26

[tex]g = - \frac{26}{6} [/tex]

[tex]g = - \frac{13}{3} [/tex]

you have to simplify the expression so i think the answer is 6g + 26

hope this helps :)

Solve:
-x/6 + 3 =8
2/7(x) = 10
-10x = -100

Answers

Answer:

-x/6 + 3 =8

x = -30

2/7(x) = 10

x = 35

-10x = -100

x = 10

What is a6/7 as a decimal

Answers

Answer:

0.857

Rounded: 0.86

Step-by-step explanation:

6/7 = 0.857

Answer:

See attached image!!

Step-by-step explanation:

Write 9 in scientific notation

Answers

The number 9 in scientific notation is 8•10^0

which ratio is greater
1) 2:3 or 2:4
2)2.5:5 or 2.2:6.6
3)3/2:1/4 or 5/4 : 3/2
4)2: 1/3 or 5: 4/3​

Answers

Step-by-step explanation:

1.2:3

2.2:5:5

3.5/4:3/2

4.5:4/3

What is 17 23/25 + 6 7/25

Answers

Answer:

24

Step-by-step explanation:

I added 17 and 6, got 23. Then did 23/25 plus 7/25, which is 1. I then added them together. Hope this helps!

If you travel 1000 feet in 5 minutes, what is your speed per minutes?

Answers

Answer: 200 feet

Step-by-step explanation:

1000feet/5feet= 200feet

Answer:

200 feet per minute

Step-by-step explanation:

Speed = Distance/Time

Since you want to find the "per minute", you would just divide the total distance by the number of minutes:

1000 feet / 5 minutes = 200 feet per minute

Solve 5x − 2(2x − 1) = 6

Answers

Answer:BRAINLIEST PLSOk so, the answer isStep-by-step explanation:Ok so, Let's solve your equation step-by-step.5x−2(2x−1)=6Step 1: Simplify both sides of the equation.5x−2(2x−1)=65x+(−2)(2x)+(−2)(−1)=6(Distribute)5x+−4x+2=6(5x+−4x)+(2)=6(Combine Like Terms)x+2=6x+2=6Step 2: Subtract 2 from both sides.x+2−2=6−2x=4So, your answer would be:x=4

Answer: x = 8

Step-by-step explanation:

The answer begins with the distributive property, multiplying positive 2 times the elements in parenthesis.

5x - (2)(2x - 1) = 6

5x - 4x - 2 = 6

1x = 6 + 2

x = 8

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