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
gayaneshka [121]
3 years ago
7

I bought 10 presents for Christmas. Some were £20 and some were £22.50. If the total cost was £217.50 how many of the £22.50 pre

sents did I buy​
Mathematics
1 answer:
Burka [1]3 years ago
8 0

Answer:

Let's denote:

Number or gifts cost 20 = x

Number or gifts cost 22.5 = y

Then, we have:

x + y = 10

20x + 22.5y = 217.5

=> 20(10 - y) + 22.5y = 217.5

=> 2.5y = 17.5

=> y = 7 (Number or gifts cost 22.5)

=> x = 10 - 7 = 3 (Number or gifts cost 20)

Hope this helps!

:)

You might be interested in
In the numerical sentence below, A = 8, D = 1/2 , and F = 1/4. What are the values B, C, and E if the sentence below is equivale
a_sh-v [17]
B=3; C=16; and E=4096.

Using the information we have gives us

8^B \times C^{\frac{1}{2}} = E^{\frac{1}{4}}

We know that:
8^B = 2;
\\
\\C^{\frac{1}{2}}=4;
\\
\\E^{\frac{1}{4}}=8

We know that 2³ = 8, so B = 3.

To "undo" a square root, we square the number; 4²=16, so C = 16.

To "undo" a fourth root, we raise the answer to the fourth power; 8⁴ = 4096, so E = 4096.
3 0
3 years ago
Read 2 more answers
What does this mean??4/9 ÷ 17/ 18
vichka [17]

Answer:

4/9 ÷ 17/18 =

Step-by-step explanation:

4/9 ÷ 17/18

4/9 · 18/17      (Take the reciprocals of 17/18)

72/153

Simplest form : 8/17

Hope this helps!

-Abha

8 0
3 years ago
The __________ are tissues where gases from the air and the blood are exchanged.
Artyom0805 [142]

air sacs or alveoli the lungs and blood 3 transport

 of respiratory gases

7 0
3 years ago
Read 2 more answers
. 3 Przeczytaj zadanie.
sattari [20]

Answer:

hindi ko ma intindihan jknjjj

3 0
2 years ago
Impact of humour in specific language structure​
olya-2409 [2.1K]

Answer:

Summary

Interest in the linguistics of humor is widespread and dates since classical times. Several theoretical models have been proposed to describe and explain the function of humor in language. The most widely adopted one, the semantic-script theory of humor, was presented by Victor Raskin, in 1985. Its expansion, to incorporate a broader gamut of information, is known as the General Theory of Verbal Humor. Other approaches are emerging, especially in cognitive and corpus linguistics. Within applied linguistics, the predominant approach is an analysis of conversation and discourse, with a focus on the disparate functions of humor in conversation. Speakers may use humor pro-socially, to build in-group solidarity, or anti-socially, to exclude and denigrate the targets of the humor. Most of the research has focused on how humor is co-constructed and used among friends, and how speakers support it. Increasingly, corpus-supported research is beginning to reshape the field, introducing quantitative concerns, as well as multimodal data and analyses. Overall, the linguistics of humor is a dynamic and rapidly changing field.Step-by-step explanation:

8 0
3 years ago
Other questions:
  • What is 32273839 x 427282725253
    15·1 answer
  • If a triangle has sides of 14,48, and 50 units respectively what type of triangle is it
    5·1 answer
  • Given triangle JKL find m
    11·1 answer
  • 3/4 + (1/3 ÷ 1/6) - (-1/2) =?​
    5·1 answer
  • -2 and 1/3 times 1 and 1/2=
    14·1 answer
  • Does a polygon usually have more sides or more angles?
    15·1 answer
  • In two or more complete sentences, describe how you would draw the graph of the solution set for the following inequality.
    15·2 answers
  • Wich expression equivalent to 4 (x + 1) +7 (x+3)
    12·2 answers
  • Please help me!!!!!!!!!!!!!!!!!!!!!!!!
    15·1 answer
  • Which of the following could be the ratio between the lengths
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!