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
Liono4ka [1.6K]
3 years ago
5

Tell me please !!!!!!

Mathematics
2 answers:
mylen [45]3 years ago
8 0

Answer:

3. £60

4. Ned had £175

Step-by-step explanation:

3. 3 segments of Donna plus £60 is the money that Kyra has. Ater Donna spend 1/3 of her money, Kyra has twice as much money as Danna. This means that  2 segments of Donna are equal to 1 segment plus £60, so 1 segment is equal to £60. Donna spend 1 segment of her money, that is, £60.

4. Let's define <em>x</em> the money of Kelly, and <em>y</em> the money of Ned.

Kelly and Ned have £400 in total:

x + y = 400 (eq. 1)

Kelly spends 40% of her money (so she conserves the other 60%), Ned spends £40, They now have the same amount of money:

0.6*y = x - 40 (eq. 2)

From equation 1:

y = 400 - x

Replacing into equation 2:

0.6*(400 - x) = x - 40

240 - 0.6*x = x - 40

- 0.6*x - x = - 40 - 240

-1.6*x = -280

x = -280/-1.6

x = £175

UkoKoshka [18]3 years ago
3 0

Answer:

(1)

Donna = Pounds 180

Kyra = Pounds 240

(2)

Kelly = Pounds 225

Nelly = Pounds 175

Step-by-step explanation:

(1)

Donna = x

Kyra = x + 60

If Donna spends 1/3 of her money she is left with 2/3 of her money;

2/3 x

Kyra now has twice as much money as Donna can be represented as;

X + 60 = 2 * 2/3 x

X + 60 = 4/3 x

(x + 60)3 = 4x

3x + 180 = 4x

180 = 4x – 3x

180 = x

Donna = 180

Kyra = 180 + 60 = 240

(2)

Kelly = x

Ned = y

Kelly spends 40% of her money. Therefore he is left with 60%;

60/100 x

Nelly spends Euros 40 of his money. Therefore he is left with;

y- 40

If they now have the same amount of money;

60/100 x = y – 40

3/5 x = y – 40

3x = 5y – 200

3x – 5y = -200

Remember Kelly & Ned has Euros 400 in total;

x + y = 400

Now we can solve the simultaneous equation by substitution;

x + y= 400

3x – 5y = -200

3x + 3y = 1200

-

3x – 5y = - 200

=

8y = 1400

Y = 175

X = 225

Kelly = 225

Nelly = 175

Learn More:

brainly.com/question/2273184

brainly.com/question/11876335

#LearnWithBrainly

You might be interested in
PLEASE HELP FAST!!! 30 POINTS
Advocard [28]

Answer:

40 points

Step-by-step explanation:

8 0
3 years ago
a boy walks along at a constant speed of 3 meters per second for 1 minute. how far does he travel during this time?
Nadusha1986 [10]
The boy walks at a constant speed V=3 m/s where V is his velocity
1 minutes has 60 seconds
Thus we conclude during 1 minute he travels :
60 seconds × 3 meters/second = 180 meters
5 0
3 years ago
Simplify the following: 7-3[(n^3+8n)/(-n)+9n^2]
Pachacha [2.7K]
If you would like to simplify <span>7 - 3[(n^3 + 8n) / (-n) + 9n^2], you can do this using the following steps:

</span>7 - 3[(n^3 + 8n) / (-n) + 9n^2] = 7 - 3[(-n^2 - 8) + 9n^2] = 7 - 3[-n^2 - 8 + 9n^2] = 7 - 3[ - 8 + 8n^2] = 7 - 3[8<span>n^2 - 8] = 7 - 24n^2 + 24 = - 24n^2 + 31
</span>
The correct result would be <span>- 24n^2 + 31.</span>
7 0
3 years ago
9a-18b+21c apply distributive property to factor out gcf of all three terms
horsena [70]
The GCF of the three terms (9a, -18b and 21c) is 3

Rewrite each of the terms so 3 is a factor
9a = 3*3a
-18b = -3*6b
21c = 3*7c

So we can say...
9a - 18b + 21c = 3*3a - 3*6b + 3*7c
9a - 18b + 21c = 3(3a - 6b + 7c)

Answer: 3(3a - 6b + 7c)

If you distribute outer 3 to each of the inner terms and multiply, you'll get the original expression again.

3 0
2 years ago
Read 2 more answers
Can someone plz help me? :(
TiliK225 [7]

the answer to your question is B.) 12x

7 0
2 years ago
Other questions:
  • Negative three times the sum of two times a number and 1 is equal to 5.” Write an equation that represents the equation, then so
    11·1 answer
  • Find the future value of an annuity due of $400 each quarter for 4 1 2 years at 13%, compounded quarterly. (Round your answer to
    15·1 answer
  • Answer asap please will mark as brainlist
    10·1 answer
  • Need help on part A Please
    8·2 answers
  • The radius of a sphere with a volume of 4.5 cubic mm is ___ mm.
    15·2 answers
  • Please answer correctly !!!!! Will mark Brianliest !!!!!!!!!!!!!!
    5·2 answers
  • 5/7 = x/11 round your answer to the nearest tenth.
    5·2 answers
  • PLEASE HELP WILL GIVE BRAINLIEST!!!!
    6·1 answer
  • `ANSWER ASAP GIVING BRAILIEST AND STUFF!
    8·2 answers
  • These map tests give me anxiety or however you spell it
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!