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
vladimir2022 [97]
3 years ago
6

Kay buys one kilogram of chocolate cookies and two kilograms of almond cookies from Jean Jacques' bakery. Zach buys three kilogr

ams of chocolate cookies and one kilogram of almond cookies. If Kay spends $11 on her cookies and Zach spends $18 on his, what is the price of one kilogram of chocolate cookies?
Mathematics
1 answer:
Juliette [100K]3 years ago
4 0
1 kg of chocolate cookies would cost $5.

Let C be the price of chocolate cookies and A be the cost of almond cookies.  The equation for Kay's cookies would be
1C + 2A = 11.

The equation for Zach's cookies would be
3C+1A = 18.

Using Kay's equation, we will get C by itself:
1C+2A = 11
C+2A = 11

Subtract 2A from each side:
C+2A-2A = 11-2A
C=11-2A

Substitute this for C in Zach's equation:
3C+1A = 18
3(11-2A)+1A = 18

Use the distributive property:
3*11 - 3*2A + 1A = 18
33 - 6A + 1A = 18

Combine like terms:
33 - 5A = 18

Subtract 33 from each side:
33 - 5A - 33 = 18 - 33
-5A = -15

Divide both sides by -5:
-5A/-5 = -15/-5
A = 3

Substitute this into Kay's equation:
C+2A = 11
C+2*3 = 11
C+6 = 11

Subtract 6 from both sides:
C+6-6 = 11-6
C=5
You might be interested in
The average salary for teachers in Orange County is $43,787 with a standard deviation of $4800. The school board decides to be g
IrinaVladis [17]

Answer:

500

Step-by-step explanation:

7 0
2 years ago
How do you find a square root of a decimal?
vova2212 [387]

Step-by-step explanation:

You have to take the decimals to whole number my multiplying it in tens, and then divided by the number of multiples you multiplied it by, also in tens.

After these, take. the square root of the resulting fraction

8 0
3 years ago
Ppppplllzzzzzzzzzzzzzzzzzx
DIA [1.3K]

Answer:

7.)C

8.)B

9.)B

10.)D (I think)

11.)B (yet again I think)

I'm not 100% sure on the last two

hope this helped

6 0
3 years ago
Read 2 more answers
If RS =14 and ST=9 ​, find RT. Use the number line below<br><br> RT=
Bingel [31]

Answer:

23

Step-by-step explanation:

RS = 14

ST = 9

That means S is in the middle of R and T because it has two line segments associated with it

RT = RS + ST

RT = 14 + 9

RT = 23

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

8 0
2 years ago
Please help ASAP!!!
PolarNik [594]
Use the formula 42600 ÷ (6.9 ÷<span> 100) to calculate this !

</span>42,600 ÷ (6.9 ÷ 100) = <span>617391.304348. Round this to 617391 since you can't sell a percentage of a book.
</span>
To check this, calculate 6.9 percent of 617391.304348. 0.069 · 617391.304348 = 42,600.
6 0
3 years ago
Other questions:
  • A bell tolls every 10 minutes. Another bell tolls every 15 minutes. Both bells toll at 6:00 PM. They will toll together again at
    11·1 answer
  • Find the height of a square pyramid that has a volume of 12 cubic feet and a base length of 3 ft​
    11·1 answer
  • Mr. Schmidt ordered 48 typewriters for his office. Each type writer cost $195. About how much did the type writers cost?
    13·2 answers
  • Malik scores 24 goals in 8 soccer games. At that rate, how many goals will he sore in 15 games?
    12·1 answer
  • Round 95.81 to the nearest whole number
    5·2 answers
  • HELLO GUYS I JUST WANT SAID SOMEONE ASK THIS QUESTIONS IF YOU COULD HELP HIM/HER WHIT THIS QUESTIONS??
    6·1 answer
  • Item 22 Question 1 You have a coupon for 10% off the sale price of a surfboard. Which is the better buy? Explain your reasoning.
    5·1 answer
  • √√Math Help Please √√<br> I need it today
    5·2 answers
  • I need help! PLSS THANK YOUU SMM
    11·2 answers
  • Help me it’s urgent
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!