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
Dimas [21]
3 years ago
9

4 bags of cement do 18m2, how many m2 can be done with 7 bags?

Mathematics
1 answer:
Art [367]3 years ago
5 0

Answer:

You would get 31.5 square meters.

Step-by-step explanation:

To find this, set up a proportion of the amount the first can make and the amount the second can. Use x for the unknown quantity.

4/18 = 7/x

Now cross multiply to solve.

7*18 = 4*x

126 = 4x

31.5 = x

You might be interested in
How do I solve equations with a variable to the power of something (give steps please)
lozanna [386]

Answer:

Step-by-step explanation:

Factoring will reveal the solution. So we divide the equation by the greatest common factor of the terms and use that factor as the coefficient. In this case the greatest common factor is just x.

2x^2+5x

x(2x+5) so the equation will equal zero when either of those expressions is zero because zero times anything is zero. x=0 and x=-5/2

5 0
3 years ago
Read 2 more answers
Heather hits a tennis ball upward with an initial speed of 32 feet per second. After how many seconds does the ball hit the grou
Mrrafil [7]
set h=0 and solve for <span>t

</span>So: 0 = 32t - 16^2

<span>32t−16<span>t2</span>=0</span><span>16t(2−t)=0</span><span><span>t=2


</span></span>
3 0
4 years ago
Read 2 more answers
HELP ME PLEASE <br> True or false: z=−5 is a solution to the inequality −2|z−3|&lt;−20.
Dovator [93]

<em><u>your </u></em><em><u>question</u></em><em><u>:</u></em><em><u> </u></em>

<em>True or false: z=−5 is a solution to the inequality −2|z−3|<−20.</em>

<em><u>answer:</u></em><em><u> </u></em>

<em>-</em><em>2</em><em>|</em><em>z-3|</em><em><</em><em>-</em><em>2</em><em>0</em>

<em>-</em><em>-</em><em>-</em><em>-</em><em>-</em><em>-</em><em>-</em><em>. </em><em> </em><em> </em><em>-</em><em>-</em><em>-</em><em>-</em><em>-</em>

<em> </em><em> </em><em> </em><em>-</em><em>2</em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>-</em><em>2</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>|</em><em>z-3|</em><em><</em><em>1</em><em>0</em><em> </em>

<em>equation </em><em>1</em><em>:</em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>equation </em><em>2</em><em>:</em><em> </em>

<em>z-3<</em><em>1</em><em>0</em><em>. </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>z-3></em><em>-</em><em>1</em><em>0</em><em> </em>

z<13 z>-13

<em>So </em><em>false, </em><em>z=</em><em>-</em><em>5</em><em> </em><em>is </em><em>not </em><em>a </em><em>solution </em><em>to the </em><em>inequality</em><em>.</em>

<em>hope </em><em>this </em><em>helps, </em><em>have </em><em>a </em><em>great </em><em>day! </em><em>:</em><em>)</em>

7 0
3 years ago
I'm Begging for somebody to do this worksheet. I can mark you brainiest and you will earn 15 points just please anybody? AND SAY
ser-zykov [4K]
(2) 2x
Bc you’re adding the imaginary one infront of the x.

(1) X squared + 25
Distribution

(3) 15x-30
Distribution

(1) x to the 6 power
You add the powers when they are being multiplied

(2) 2x squared + 7x + 12
Foil method

(2) 9x + 20
Adding Like terms

(4) 12x + 25
Adding and multiplying like terms

(2) 19x + 7
Multiplying then adding like terms.


I hope this helps ;)

Mark me brainliest please! ;D
5 0
3 years ago
PLEASE HELP
katovenus [111]

<u>Answer:</u>

$593.26

<u>Step-by-step explanation:</u>

We know that the price of the laptop is $2500 and each year its resale value decreases by 25%. It means that 100 - 25 = 75% of the value is retained every year for the resale.

So, the resale value for 1st year = \frac{75}{100} *2500 = $1875

for 2nd year =  \frac{75}{100} *1875 = $1406.25

for 3rd year =  \frac{75}{100} *1406.25 = $1054.7

for 4th year =  \frac{75}{100} *1054.7 = $791.01

for 5th year =  \frac{75}{100} *791.01 = $593.25

Or we can use the following formula to find its resale value after 5 years:

2500*(0.75)^5 = $593.26

4 0
3 years ago
Other questions:
  • Which equation has the solutions x = 1+ V5?
    7·1 answer
  • How to solve 5/8h = 1,1/2=5
    5·1 answer
  • What is the best way to classify each equation?
    10·1 answer
  • Rebecca has 6 yards of ribbon. It takes 3/8 yard to wrap one package. How may packages can Rebecca wrap? I need help this is due
    5·1 answer
  • Find the number of possible positive real zeros of f(x)= -7x^4+ 49x^3+ 84x^2.
    15·1 answer
  • The graph shows a proportional relationship between the number of computers produced at a factory per day. In three days, 36 com
    15·1 answer
  • Given the triangle below, tell me if it's a right triangle or not. Then, explain your answer with evidence.
    6·1 answer
  • The manager of a dress shop recorded the number of dresses sold during the week, the data is as follows:
    13·2 answers
  • Seven hundred twelve thousandths in standard form and expanded form ​
    8·1 answer
  • Pleaseee helppp with thisss asappp
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!