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
lubasha [3.4K]
3 years ago
9

The graphs of the equations Ax + By =15 and Ax - By =9 intersect at (2, 1). Find A and B. Show or explain your reasoning

Mathematics
1 answer:
iVinArrow [24]3 years ago
5 0
Hi here’s the answers hope this helps

You might be interested in
The delivery ramp at the corner cafe id a right triangle. The hypotenuse is 4 meters long. One leg is 3 meters long. What is the
disa [49]

Answer:

f. sqrt 7 meters

Step-by-step explanation:

we use Pythagoras' theorem here,

let the unknown side be x,

therefore,

=> 3² + x² = 4²

=> x² = 16 - 9

=> x = √7 m

7 0
3 years ago
Read 2 more answers
A new test to detect TB has been designed. It is estimated that 88% of people taking this test have the disease. The test detect
Elodia [21]

Answer:

Correct option: (a) 0.1452

Step-by-step explanation:

The new test designed for detecting TB is being analysed.

Denote the events as follows:

<em>D</em> = a person has the disease

<em>X</em> = the test is positive.

The information provided is:

P(D)=0.88\\P(X|D)=0.97\\P(X^{c}|D^{c})=0.99

Compute the probability that a person does not have the disease as follows:

P(D^{c})=1-P(D)=1-0.88=0.12

The probability of a person not having the disease is 0.12.

Compute the probability that a randomly selected person is tested negative but does have the disease as follows:

P(X^{c}\cap D)=P(X^{c}|D)P(D)\\=[1-P(X|D)]\times P(D)\\=[1-0.97]\times 0.88\\=0.03\times 0.88\\=0.0264

Compute the probability that a randomly selected person is tested negative but does not have the disease as follows:

P(X^{c}\cap D^{c})=P(X^{c}|D^{c})P(D^{c})\\=[1-P(X|D)]\times{1- P(D)]\\=0.99\times 0.12\\=0.1188

Compute the probability that a randomly selected person is tested negative  as follows:

P(X^{c})=P(X^{c}\cap D)+P(X^{c}\cap D^{c})

           =0.0264+0.1188\\=0.1452

Thus, the probability of the test indicating that the person does not have the disease is 0.1452.

4 0
3 years ago
Can somebody pls help me!!!
ankoles [38]

Answer:

200 cm^2

Step-by-step explanation:

Add up all areas

4 x 6 x 1/2 = 12

4 x 6 x 1/2 = 12

3 x 11 = 33

3 x 11 = 33

6 x 11 = 66

12 + 12 + 33 + 33 + 66 = 200

3 0
3 years ago
Plz help me it’s about apex and I just need the answer bc I don’t understand
trasher [3.6K]
The variable can be g for games being bowled and the expression is 25g
7 0
3 years ago
Read the instructions first
Alinara [238K]

Answer:

Step-by-step explanation:

Step 1:

x - > number of Avocado

y -> number of melon

Step 2:

x ≤ 3y

x +  y ≥ 20

Step 3:

x + y≥ 20

     y ≥ -x + 20

Step 4:

( 1 , 20)

x ≤ 3y               ; y≥ -x + 20

1 ≤ 3*20          ;  20 ≥ -1 + 20

1 ≤ 60              ; 20 ≥ 19

3 0
3 years ago
Other questions:
  • Please help me thanks
    7·2 answers
  • 5y(2y-3)=(2y-3) can someone help me and explain step by step on how to do it
    7·1 answer
  • A dairy wishes to mix together 1,000 pints of milk that contains 8% butterfat. if the mixture is to be made from milk containing
    8·2 answers
  • 99-4-2-22-2-3-4--4--3-2-3-4-5-6-6-3-3-2-3-4--5-6-5-4-
    9·1 answer
  • A plumber is fitting pipes for a remodeled kitchen sink. The sink requires 3 different sections of pipe; the first i feet long,
    5·1 answer
  • A cubic function of the y=ax^3+bx^2+cx+d<br><br><br><br> yields the following table:
    6·1 answer
  • Let ​f(x)=x2−4 and ​g(x)=7−x. Perform the composition or operation indicated.<br> ​(fg)(8​)
    11·1 answer
  • Solve.<br><br> Okay here is 20 letters brainy
    13·1 answer
  • Find the total surface area of the cylinder Leave the answer in terms of π. radius 3.5 height 6
    12·1 answer
  • Which are correct representations of inequality 6x&gt;3+4(2x-1)
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!