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
13

Make k the subject for 3t = 7k/13 - 17 and 7k = 4k/3t - 11t

Mathematics
1 answer:
Lina20 [59]3 years ago
3 0
A)

3t = 7k/13  - 17

3t + 17 = 7k/13

13*(3t + 17) = 7k

7k =  13*(3t + 17)

7k = 39t + 221

k = (39t + 221) / 7

b)

7k = 4k/3t -  11t

11t = 4k/3t - 7k              LCM = 3t

11t =  (4k - 21kt) / 3t

11t*3t = (4k - 21kt)

33t² = k(4 - 21t)

33t² /(4 - 21t)  = k

k =  33t² /(4 - 21t)

I hope this helps.
You might be interested in
6. The cost C of hiring a taxi is given by the formula C = 4 + 1.25m where m is the number of miles driven. Make a table showing
natali 33 [55]

Answer:

M = $800,000 and x = $2.2 million. 1.48 One would expect stock prices to be skewed to the right

Step-by-step explanation:

8 0
3 years ago
Maddison hid 12 of her sister's birthday gifts around the house. If this was 15% of the gifts, how many total gifts did her sist
I am Lyosha [343]

Answer:

80 gifts

Step-by-step explanation:

Maddison hid 12 of her sister's birthday gifts around the house. If this was 15% of the gifts, how many total gifts did her sister have?

Let the Total gifts that her sister has be represented by x

Hence:

15% of x = 12

15/100 × x = 12

15x /100 = 12

Cross Multiply

15x = 100 × 12

15x = 1200

x = 1200/15

x = 80 gifts

Hence, the total gifts her sister has is 80 gifts

4 0
3 years ago
Read 2 more answers
What would an 18% increase of 90 be?
madam [21]

Answer:

106.2

Step-by-step explanation:

A 18% increase of a number is the same as multiplying it by 1.18.

If we multiply 90 by 1.18 we get:

90 * 1.18

106.2

8 0
3 years ago
Read 2 more answers
7-x+3=9x+10 help please
Nady [450]

Answer:

7=9x+10+x+3

Step-by-step explanation:7=10x+13

10x=20=10x/10=20/10=2 2 is the answer

4 0
2 years ago
Sue is upholstering a rectangular ottoman that measures 21 centimeters by 18 centimeters by 15 centimeters. What will be the tot
Anika [276]

Answer:

1926cm²

Step-by-step explanation:

Given

Dimension = 21cm by 18cn by 15cm

<em>The illustration in this question is to determine the surface area of the fabric and this is calculated using the surface area of a cuboid as follows:</em>

<em></em>

Surface\ Area =2(LB + LH + BH)

Where L, B and H are the dimensions.

So,

Surface\ Area = 2(21 * 18 + 21 * 15 + 18 * 15)

Surface\ Area = 2(378 + 315 + 270)

Surface\ Area = 2(963)

Surface\ Area = 2 * 963

Surface\ Area = 1926cm\²

<em>Hence, 1926 cm² of fabrics are needed to cover all surfaces.</em>

6 0
3 years ago
Other questions:
  • Simone and Nang read a total of 23 books over the summer.
    10·1 answer
  • Emergency!!!! Please help Geometry
    5·2 answers
  • Find the missing element in the following base-rate-percentage problem.
    15·2 answers
  • What is the first step in sketching the graph of a rational function?
    9·2 answers
  • What is a ratio just tell me what a ratio is
    15·2 answers
  • What integer describes a profit of $650?
    7·2 answers
  • I NEED HELP!!
    11·2 answers
  • Anymore can solve this?
    12·1 answer
  • Consider the linear function that is represented by the equation y = 4 x + 5 and the linear function that is represented by the
    15·2 answers
  • Hunter has a collection of 140 coins. How many coins represent 5% of his collection? Divide/scale down to solve for the missing
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!