maths very easy class 8​

Maths Very Easy Class 8

Answers

Answer 1

Answer:

Rs. 333

Step-by-step explanation:

Area of the surface of the cuboidal box to be painted = surface area of the cuboidal box - area of the base

✔️Surface area of the cuboidal box = 2(L*W + W*H + L*H)

L = 6 cm

W = 4 cm

H = 2.5 cm

Surface area of the cuboidal box = 2(6*4 + 4*2.5 + 6*2.5) = 2(24 + 10 + 15) = 2(49)

Surface area of cuboidal box = 98 cm²

✔️Area of base = L*W

= 6*4 = 24 cm²

Area of the cuboidal box to be painted = 98 - 24 = 74 cm²

✔️Cost of painting 74 cm² at Rs. 4.50 per cm² = 74 × 4.50 = Rs. 333


Related Questions

Given that a = ( − 6 7 ) and b = ( − 1 − 3 ) . If a − b = ( x y ) , work out the values of x and y .

Answers

Answer:

x = -5 , y = 10

Step-by-step explanation:

As given ,

a = ( x₁ , y₁ ) = ( -6, 7)

b = ( x₂ , y₂ ) = (-1, -3)

For a -b = ( x₁ - x₂ , y₁ - y₂ )

            = ( -6 - (-1) , 7 - (-3) )

            = ( -6 + 1 , 7 + 3 )

            = ( -5 , 10 )

⇒ a - b = ( -5, 10 ) = ( x, y)

∴ we get

x = -5 , y = 10

The equation x^2=1 has two solutions of the equation is changed to 4x^2=1 which operation

Answers

Answer:

for the x^2 =1 the first solution is 1x1 the other solution is -1x-1

4x^2=1 the "x" equals to 1/2

Step-by-step explanation:

Because the answer is "1" it is positive. Negative and negative equals to positive. Positive and positive equals to positive.

Friday night a pizza parlor sold 5 large pizzas and some medium pizzas the pizza parlor made a totle of 291 how many mediom pizas werer sold wright and eqacion

Answers

Answer: 24

Step-by-step explanation:

The other information regarding the question is that the Medium pizza cost $9 while the Large pizza cost $15.

The number of medium sized pizza that Wright sold will be represented by x.

(5 × $15) + ($9 × x) = $291

$75 + 9x = $291

9x = $291 - $75

9x = $216

x = $216/9

x = 24

He sold 24 medium pizza


This graph shows how the amount of tape Kurt has used is related to the number of presents he has wrapped.

Answers

Answer:

C 3 cm per present

Step-by-step explanation:

1 = 3cm

2 = 6cm

3 = 9cm

ARITHMETIC SEQUENCES
11. (16) An arithmetic sequence has a common
difference of 4 and the 3rd term is 6. What is the
7 th term?
A. 14
B. 22
C. 34
D. 18

Answers

..........The answer is B

Answer: B

Step-by-step explanation:

Savannah is deciding between two parking garages. Garage A chargers an initial fee of $9 to park plus $1.50 per hour

Answers

Answer: 4 hours

Step-by-step explanation:

Assume x is the number of hours taken.

Garage A would therefore charge a total of:

= $9 + $1.50 * x

= 9 + 1.50x

Garage B would charge:

= $5 + $2.50 * x

= 5 + 2.50x

To find the number of hours it would take for them to be the same, equate both equations:

9 + 1.50x = 5 + 2.50x

9 - 5 = 2.50x - 1.50x

4 = 1x

x = 4 hours

That cost would be:

= 9 + 1.50 * 4

= 9 + 6

= $15

please help! im stuck on this question

Answers

Answer:

6

Step-by-step explanation:

id say the answer is 6 or 9 :)

A large bag of popcorn contains 9 1/3 cups . A serving of popcorn is 2 2/3 cups how many servings are in a large bag of popcorn

Answers

Answer: 3 1/2

I hope this helps!

                                                                     

Answer:

3 1/2 servings

Step-by-step explanation:

9 1/3 / 2 2/3 = ?

28/3 / 8/3 = 84/24

reduce 84/24

3 1/2

HELP MEEE PLSSSS PLSSS

Answers

Answer:

b

Step-by-step explanation:

Answer:

135°

Step-by-step explanation:

The total interior angle sum of a pentagon is 540°, so the remaining angle is 135°.

Which equation below illustrates the distributive property? A. 4 x + 5 = 5 + 4 x B. 5 ( x − 3 ) = 5 x − 15 C. 3 ( x + 2 ) + 3 ( 2 + x ) D. ( 5 x + 2 y ) + 3 = 5 x + ( 2 y + 3 )

Answers

The answer is B. Distributive property is when you distribute the numbers out. Like 5 time x and 5 times -3.

How do you write 2sin5cos5 as a single trigonomic ratio?

Answers

Answer:

ertyui

Step-by-step explanation:

Plz help me plzzzzzzzzz

Answers

D. (-4, -1)

May Nilbin be with you

Answer:

c

Step-by-step explanation:

x axis comes first so it's -1 then the y Axis witch is -4 so it's (-1,-4) C

Drag and drop each equation to match the type of solution.

Answers

Answer:

B, A, C

Step-by-step explanation:

Find the area of a square with side lengths of 7/8 inch.

Answers

Answer:

A = s²

A = (7/8)²

A =49/64

A= 0.77inches

Factorise fully
2x+14

Answers

Answer:

2 (x + 7)

Step-by-step explanation:

2x + 14

2 (x+7)

I hope this helps

Answer:

[tex]2(x+7)[/tex]

Step-by-step explanation:

Factoring is when takes out the GCF (greatest common factor) between two numbers. Between the numbers [tex]( 2x + 14 )[/tex] The GCF is ([tex]2[/tex]). Hence one divides both numbers by ([tex]2[/tex]), groups the numbers and then writes ([tex]2[/tex]) on the outside.

([tex]2x + 14[/tex])

[tex]2(x+7)[/tex]

what is 2(3x – 4) = 3x+1

Answers

Answer:

x = 3

Step-by-step explanation:

Answer:

I love math anyways

X=3 how i got the ans is in the picture and the steps

(hope it helps can i plz have brainlist it will make my day :D hehe)

Step-by-step explanation:

(Ignore the big blue 3)

Answers

answer

volume of cube=edge³

125,000=edge³

cube root of 125,000 is the side of the cube.

side=50inches

Please please helppp answer correctly !!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!

Answers

Answer:

holy.... that's a lot of variables.

4t+2s+w+u+x+v

how can you represent all of the solutions to systems of inequalities?​

Answers

Answer:A closed, or shaded, circle is used to represent the inequalities greater than or equal to (≥) or less than or equal to (≤) . The point is part of the solution. An open circle is used for greater than (>) or less than (<). The point is not part of the solution. Solving" systems of linear inequalities means "graphing each individual inequality, and then finding the overlaps of the various solutions". So I graph each inequality, and then find the overlapping portions of the solution regions.Step 1: Line up the equations so that the variables are lined up vertically. Step 2: Choose the easiest variable to eliminate and multiply both equations by different numbers so that the coefficients of that variable are the same. Step 3: Subtract the two equations. Step 4: Solve the one variable system.

Step-by-step explanation:

hope this helps have a great night ❤️❤️❤️


Identify the initial amount a and the rate of growthr (as a percent) of the exponential function y = 25(1.2). Evaluate the function when t = 5. Round your answer to the nearest
tenth
a=
T=%
When t = 5, y =

Answers

A=25
T=20%

can you write the complete function so i can get y ? is it power t or what ?

Expand 3(x+ 2.3)
Expand 1/3(9x-12)

Answers

Answer:

3x+6.9 and 3x-4

Step-by-step explanation:

since 3 x x is 3x and the sign in the bracket is addition you place it there then place 3 x 2.3

being 6.9.

1/3 x 9is 9/3 and 3 can multiply both sides to get 3/1 or 3 then bring the minus and 1/3 x 12 is 12/3 3 can multiply both sides to get 4/1 or 4

7 times a number increased by 3 is the
same as 13 more than 5 times the number.
Find the number.

Answers

7x+3 = 5x+13
2x = 10
x = 5

y varies directly as x, if y = 9, when x = -3, find x when y = -27

Answers

Answer:

9

Step-by-step explanation:

x Is -1/3 of y

-27x-1/3= 9

The value of x when y = -27 is 9.

y varies directly as x

Therefore,

y ∝ x

y = kx

where

k = constant of proportionality

Let's find k when y = 9 and x = -3

y = kx

9 = -3k

k = 9 / -3

k = -3

Let's find x when y = -27

y = kx

-27 = -3x

x = -27 / -3

x = 9

learn more on variation here: https://brainly.com/question/25391692?referrer=searchResults

What is 8 4/9 as a decimal?

Answers

8.4444 i think I’m not sure

The decimal is 8.44444

What is decimal?

Decimals are a set of numbers lying between integers on a number line. They are just another way to represent fractions in mathematics. With the help of decimals, we can write more precise values of measurable quantities like length, weight, distance, money, etc. The numbers to the left of the decimal point are the integers or whole numbers and the numbers to the right of the decimal point are decimal fractions. If we go right from ones place, the next place will be (1/10) times smaller, which will be (1/10)th or tenth place value.

Given:

8 4/9

Change the mixed fraction in normal fraction

=9*8+4/9

=72+4/9

=76/9

=8.4444444

Learn more about decimal here:

https://brainly.com/question/548650

#SPJ2

can someone helpp with this

Answers

Answer:

the circumference is roughly 6.28

Step-by-step explanation:

the formula for circumference is C=2πr and radius is the diameter divided by 2 so there for the radius is 1.

x-7=7-x find solution

Answers

Answer:

7

Step-by-step explanation:

x-7=7-x

2x-7=7

2x=14

x=7

Answer:

x = 7

(Hope this helps! Btw, I am the first to answer. Brainliest pls! :D)

please help me solve this​

Answers

X=3 and download Photomath

How many solutions does this
system have?
2x + y = -1
1-4x – 2y = -5

Answers

Answer:

none

Step-by-step explanation:

I just did this question and got it right.

A student is 1.75m tall and is trying out for the football team. He kicks the football straight up
in the air from his outstretched arms at a height of 1 m. If the ball hits him on the head on the
way back down 3 seconds later, what was the football's initial velocity?

Answers

Answer:  see below

Step-by-step explanation: Initial velocity = terminal velocity. At the top of travel, the velocity is 0 as the ball is motionless. Then it travels 3 seconds (due to gravity). Grav is 9.8m/sec squared. So 1st second = 9.8m. 2nd second is 2x9.8m. 3rd second is 3x9.8m = 29.4 m/sec.

Mia invested $640 in an account paying an interest rate of 6.7% compounded continuously. Assuming no deposits or withdrawals are made, how long would it take, to the nearest year, for the value of the account to reach $940?

Answers

Answer:

t=6 years

Step-by-step explanation:

Other Questions
Read this excerpt from The Secret Garden.Her hair was like curly silk and she had a delicate little nose which seemed to be disdaining things, and she had large laughing eyes. All her clothes were thin and floating, and Mary said they were full of lace. They looked fuller of lace than ever this morning, but her eyes were not laughing at all. They were large and scared and lifted imploringly to the fair boy officers face.Is it so very bad? Oh, is it? Mary heard her say.Awfully, the young man answered in a trembling voice. Awfully, Mrs. Lennox. You ought to have gone to the hills two weeks ago.The Memsahib wrung her hands.Oh, I know I ought! she cried. I only stayed to go to that silly dinner party. What a fool I was!Which detail best supports the idea that Mrs. Lennox is concerned?Question 5 options:She said she went to a dinner party.She asks the officer questions.Her eyes were not laughing that morning.All her clothes are thin and floating. Find an equivalent expression 3(2d+2) + 2(2d+5)PLSSSSS I need help The options are 1.) 10d + 26 2.) -10d+ 263.) -10d-64.) 10d +16 5.) 10d - 4thankyouuu Which statement is correct considering coal and oil? A. large amount of oil and coal still are available. B. very little oil remains in the earth C. energy source must be used wisely Dvery little coal remain in the earth. Consider HD Doolittle's poem the sea rosewhat makes the sea Rose more precious in the speakers opinion that more conventionally romantic roses?It has endured battering by waves and windIt has a deeper shade of coloring than a conventional RoseIt has more pedals than a conventional RoseIt has absorbed the scent of salt water and sand need help pls and thank you answer this question plz why cats hate pickles hahahhahahah -8(y + 5) = -8y - 40 TRUE or FALSE I need help with anything on here mostly the explanation if anyone could possibly help it would be a lot. :) Is the sentence capitalized correctly Professor Mitchell j. Green's class Changing History is only offered in the evenings what is the slope of (4,8) and (10,7) The whale has a pelvic bone but no legs attached, this is an example of:a) homologousb) vestigialc) dichotomousd) fossilized help me plz!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1 A. Solve the following linear inequalities.1. x + 7 55. 4a 23.66. 1.6 b< 87. Z + 4.2 < 2.1 Using Details from the text, describe the image thatwas painted in your mind while reading chapter one ofDeep Water. Use evidence from the text to supportyour description What type of energy does a bouncing ball have ? Janice attempted to shoot 42 free throws with a basketball. She made 35 of the free throws. Based on those results what would you estimate the probability to be that she makes the next free throw? A) .5333B) .6333C) .7333D) .8333 Why did Szilard and other scientists oppose using the atomic bomb? George and mindy are playing with a ball that has a diameter of 38 centimeters. What is the volume of the ball? can someone help me out please. its due soon and i dont have alot of time