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3 years ago

Which equation is true for the value x = 15?

Mathematics

1 answer:

boyakko [2]3 years ago

4 0

The third one because 2(15+5)=2(20)=40

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MK and ML are tangent to circle J. If MK = 6x – 15 and ML = 2x + 9, find x. * am i right?? * --> provide details if i'm wrong

Veseljchak [2.6K]

Answer:

Step-by-step explanation:

$y^{2} = r^{2} + (4,2)^{2} \\\\ y^{2} - r^{2} = (4,2)^{2} y^{2} = r^{2} + z^{2} \\\\ y^{2} - r^{2} = z^{2}\\so: z^{2} = (4,2)^{2} ----> z = 4,2$

3 0

3 years ago

The owner of a used car lot wants to buy many cars at an auction as he can while not spending more than $20000. If he expects th

AleksAgata [21]

Answer:

Step-by-step explanation:

Given that:

Total maximum amount that the owner wishes to spend = $20000

Average price of each car = $4000

To find:

How many cars that the owner can expect to buy?

Solution:

Total number of cars that the owner can expect to buy can be found by dividing the total money available with the owner with the average price of each car.

i.e.

$\text{Number of cars expected to be bought} = \dfrac{\text{Total money available with the owner}}{\text{Average Price of car}}$

We have the following values as given in the question statement:

Total money available = $20000

Average price of car = $4000

Therefore, the answer is:

$\text{Number of cars expected to be bought} = \dfrac{20000}{4000} = \bold{5}$

The owner can expect to buy 5 number of cars.

7 0

2 years ago

B) State a valid formula for multiplying out (A + B)(A − B)

Diano4ka-milaya [45]

(A+B)(A-B) = A^2-B^2.

It's equality constant

8 0

3 years ago

A contractor records all of the bedroom areas, in square feet, of a five-bedroom house as: 100, 100, 120, 120, 180 What is the v

kifflom [539]

The variance is the total of the squared distances of the given data from the mean.

This can be calculated through the equation,

  σ² = summation of X² / N - μ²

where σ² is the variance X's are the data, N is the number of terms, and μ is the mean.

summation of X² = 100² + 100² + 120² + 120² + 180² = 81200
N = 5
  μ = (100 + 100 + 120 + 120 + 180) / 5
μ = 124

Substituting these values to the equation for variance,

  σ² = (81200/5) - 124² = 864

Thus, the variance is equal to 864.

4 0

3 years ago

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Harvard University accepts 6 students for every 100 applicants. How many students will be accepted in 850 applicants apply for a

LenKa [72]

Answer:

51 students.

Step-by-step explanation:

First you need to establish a rate 6/100+3/50

8*100=800 6*8=48

3/50

850-800=50 3/50

48+3=51

5 0

2 years ago

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