1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Yanka [14]
3 years ago
12

Help me to do this please

Mathematics
1 answer:
Tanzania [10]3 years ago
7 0

If x represents the mass of 1 ball in kg, then the balance shows ...

... 6x = x + 9 kg

... 5x = 9 kg

Then 6x is ...

... (6/5)·5x = (6/5)·9 kg = 10.8 kg

0.8 kg = 0.8·1000 g = 800 g

so 10.8 kg is ...

... D. 10 kg 800 g

You might be interested in
6. Suppose you decide to make and sell silk flower arrangements. You spend $220.00 on materials. You sell each flower arrangemen
Gekata [30.6K]

The profit would you make if sold 23 silk flower arrangements be  $21.5.

<h3>What is Unitary method?</h3>

The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.

Given:

spend on materials = 220

Price for each flower =10.50

If 23 flowers are sold price would be,

= 10.50*23

=241.5

Hence, the profit would be = 241.5-220

                                             = $21.5

Learn more about unitary method here:

brainly.com/question/22056199

#SPJ1

7 0
2 years ago
Which values of a and b make the following equation true? a = 11, b = 7 a = 11, b = 10 a = 28, b = 7 a = 28, b = 10
xz_007 [3.2K]

Answer:

The answer is

<h2>a = 11, b = 7</h2>

Step-by-step explanation:

( {5x}^{7}  {y}^{2} )( { - 4x}^{4}  {y}^{5} ) =  - 20 {x}^{a}  {y}^{b}

Multiply the terms on the left side of the equation

That's

- 20 {x}^{11}  {y}^{7}  =  - 20 {x}^{a}  {y}^{b}

Since the bases are the same we can equate the exponents

That's

{x}^{11}  =  {x}^{a}

a = 11

And

{y}^{7}  =  {y}^{b}

b = 11

Therefore

a = 11 and b = 7

Hope this helps you

7 0
3 years ago
Which number is a factor of 18 but not a multiple of 3
lakkis [162]
Well nine times 2 is 18. and 3 times 6 is 18 so is is it 2

5 0
3 years ago
Read 2 more answers
What is the base of a triangle with a height of 7.4 cm and an area of 48.1 cm2?
vitfil [10]

Answer:

13cm

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
1^2 + 4^2 + 7^2 + ... + (3n - 2)^2 = n(6n^2-3n-1)/2
vlabodo [156]
Use math induction proof method will be usefully 

for n=1 will get 

1^2 = 1(6*1^2 -3*1 -1)/2
1 = 1(6-4)/2
1 = 1(2)/2
1 = 1

suppose true for n=k and prove for k = k+1 

hope this will help you 
7 0
3 years ago
Other questions:
  • What is t×3/4 for t = 8/9
    15·2 answers
  • PLEASE HELP
    7·1 answer
  • Two perpendicular lines intersect at the origin. If the slope of the first line is .5, what is the equation of the second line?.
    15·1 answer
  • The dimensions of prism B are 3 times the dimensions of prism A. The volume of prism A is 384cm cubed.
    15·1 answer
  • -39.85 + 34.8 - .375
    13·2 answers
  • Please help me with this
    14·1 answer
  • Between 2016 and 2018 how many kg of boulders were excavated?​
    13·1 answer
  • After special medicine is introduced into a peril dish full of bacteria, the number of bacteria remaining in the dish decreases
    11·2 answers
  • Nina buys a small rug in the shape of a kite. The width of the rug is half its height. What are the width and area of the rug? (
    11·1 answer
  • Many American cars feature speedometers that show kilometers per hour. If you are required to drive 500 miles, and you know that
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!