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
Likurg_2 [28]
4 years ago
11

Please teach me how to do this question..tq​

Mathematics
1 answer:
nikitadnepr [17]4 years ago
3 0

Answer:

Emilia bought 28 sweets

Step-by-step explanation:

now they have 65, but before they had 65-15+10 because earlier, zakiah had ten more sweets than now and Emilia had 15 less, so basically, if you wanna calculate number of sweets they had earlier, you have to make minus from plus and in reverse too.

65-15+10=60 and now just do that simply ratio

E:Z=7:8

E+Z=7x+8x

60=15x

4=x

7x=28=Emilia

8x=32=Zakiah

Accuracy test:

(28+15)+(32-10)=65

28 is 4•7 and 32 is 4•8

You might be interested in
What is the value of a?
kaheart [24]

Answer:

a=\dfrac{16}{3}\ un.

Step-by-step explanation:

In right triangle XZW, the height WY is the geometric mean of segments ZY and XY.

Hence,

WY^2 =ZY\cdot XY,\\ \\4^2=3\cdot a,\\ \\a=\dfrac{16}{3}\ un.

7 0
4 years ago
Read 2 more answers
2 kg of bananas cost $20. How many kilograms of bananas can you get with $40
N76 [4]

Answer:

4kg

Step-by-step explanation:

2kg = 20$

20 x 2 = 40

2 x 2 = 4

6 0
3 years ago
Read 2 more answers
Using the graphing function on your calculator, what is the solution to the system of equations shown below?
SpyIntel [72]
Answer:
B, x=3 y=5

Step-by-step explanation:
x=-7+2y
3y+2x=21
Substitute the x into the other equation
3y+2(-7+2y)=21
y=5
Now put the value into a desired equation
x=-7+2(5)
x=3.
The answer is x=3 and y=5

I hope this helped!
5 0
4 years ago
You cut square corners from a piece of cardboard that has dimensions 32 cm by 40 cm. You then fold the cardboard to create a box
jenyasd209 [6]

Answer:

h = 6 cm  

l = (32-2(6)) =  20 cm

w = (40-2(6)) = 28 cm

Step-by-step explanation:

Given in the question a piece of cardboard having dimensions 32 by 40

Suppose we cut square of length x

When you cut square corners from a piece of cardboard, two sides are 32-2x, and other two sides are 40-2x lengths

<h3>Step 1</h3>

Formula for the volume of box

v = height * length  * width

v = x  (32-2x)  (40-2x)

v = 4x³ - 144x² + 1280x

<h3>Step 2</h3>

Find derivative and equal it to 0

dv/dx = 4(3)x² - (2)144x + 1280

      0 = 12x² - 288x + 1280

x1 = 18.110

x2 =5.88

<h3>Step 3</h3>

Select x and plug value of x to find dimension

(32-2x) > 0

2x < 32

 x < 16

so domain say that x should be less than 16 which means x = 5.88 ≈ 6 cm

h = 6 cm  

l = (32-2(6)) =  20 cm

w = (40-2(6)) = 28 cm

6 0
4 years ago
LOTS OF POINTS
nika2105 [10]

Answer:

a

Step-by-step explanation:

5 0
3 years ago
Other questions:
  • There are 360 boys in green valley elementary school elementary school there are 180 there are 180 more boys then girls
    6·2 answers
  • Hellllllllllllllllllllllllppppppppppppp
    11·1 answer
  • is it possible draw a right triangle with and obtuse angle? if so draw it in the box if not write impossible. is it possible guy
    5·1 answer
  • 4x ²-1=<br> HELP ME FAST IF ITS RIGHT ILL GIVE YOU BRAINLEIST !!!!!!
    5·2 answers
  • 2 thousands divided by what number is equal to 2 hundreds?
    11·1 answer
  • A bicycle store costs $2400 per month to operate. The store pays an average of $60 per bicycle. The average selling price of eac
    5·2 answers
  • Can someone do this plz
    11·1 answer
  • Suppose 2500 dollars is invested at 4% for 5 years. Find the account balance if it is
    11·1 answer
  • What is the length of the line?<br> Will give BRAINLIEST
    10·2 answers
  • Is the least number to be added to 5607 to get a perfect square. <br> pls add the steps.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!