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
Elan Coil [88]
3 years ago
12

4 ALGEBRA 1B QUESTIONS - 70PTS

Mathematics
1 answer:
max2010maxim [7]3 years ago
6 0
They have two solutions
You might be interested in
A test to detect an infection gives a positive result 98% of the time if a person is infected. It is 97% accurate for people who
sergeinik [125]
Consider this:

If a test gives a positive result for an infected person 98% of the time, that means that 2% of the time, it gives a negative result for an infected person, which would be a false negative.

Then,

if the test is 97& accurate (not precise) for non-infected people, that means that it gives a negative result 97& of the time. So a positive result will be given 3% of the time for non-infected people, which is considered a false positive.
5 0
3 years ago
Read 2 more answers
I just need someone to tell me who earns more money per hour, and explain how
worty [1.4K]

Answer:

Lisa earns more money because John makes $16 while Lisa makes $18.

3 0
3 years ago
Please help Need help
Anettt [7]
This problem can be readily solved if we are familiar with the point-slope form of straight lines:
y-y0=m(x-x0) ...................................(1)
where 
m=slope of line
(x0,y0) is a point through which the line passes.

We know that the line passes through A(3,-6), B(1,2)

All options have a slope of -4, so that should not be a problem.  In fact, if we check the slope=(yb-ya)/(xb-xa), we do find that the slope m=-4.

So we can check which line passes through which point:

a. y+6=-4(x-3)
Rearrange to the form of equation (1) above,
y-(-6)=-4(x-3)  means that line passes through A(3,-6) => ok

b. y-1=-4(x-2) means line passes through (2,1), which is neither A nor B
   ****** this equation is not the line passing through A & B *****

c. y=-4x+6  subtract 2 from both sides (to make the y-coordinate 2)
   y-2 = -4x+4, rearrange
   y-2 = -4(x-1)  
   which means that it passes through B(1,2), so ok

d. y-2=-4(x-1)
   this is the same as the previous equation, so it passes through B(1,2), 
   this equation is ok.

Answer: the equation y-1=-4(x-2) does NOT pass through both A and B.
   
8 0
2 years ago
Write the expression that shows "3 times the sixth power of ten."
KIM [24]
3 x 10 (with a small 6 at the top right of the ten). Hope this helped
8 0
3 years ago
Read 2 more answers
Messed up and didnt put the attachment on the last post
Margarita [4]

<u>Answer</u><u> </u><u>:</u><u>-</u>

9(3+√3) feet

<u>Step </u><u>by</u><u> step</u><u> explanation</u><u> </u><u>:</u><u>-</u>

A triangle is given to us. In which one angle is 30° and length of one side is 18ft ( hypontenuse) .So here we can use trignometric Ratios to find values of rest sides. Let's lable the figure as ∆ABC .

Now here the other angle will be = (90°-30°)=60° .

<u>In ∆ABC , </u>

=> sin 30 ° = AB / AC

=> 1/2 = AB / 18ft

=> AB = 18ft/2

=> AB = 9ft .

<u>Again</u><u> </u><u>In</u><u> </u><u>∆</u><u> </u><u>ABC</u><u> </u><u>,</u><u> </u>

=> cos 30° = BC / AC

=> √3/2 = BC / 18ft

=> BC = 18 * √3/2 ft

=> BC = 9√3 ft .

Hence the perimeter will be equal to the sum of all sides = ( 18 + 9 + 9√3 ) ft = 27 + 9√3 ft = 9(3+√3) ft .

<h3><u>Hence </u><u>the</u><u> </u><u>perim</u><u>eter</u><u> of</u><u> the</u><u> </u><u>triangular</u><u> </u><u>pathway</u><u> </u><u>shown</u><u> </u><u>is</u><u> </u><u>9</u><u> </u><u>(</u><u> </u><u>3</u><u> </u><u>+</u><u> </u><u>√</u><u>3</u><u> </u><u>)</u><u> </u><u>ft</u><u> </u><u>.</u></h3>
3 0
2 years ago
Other questions:
  • a 45 foot tall lighthouse located in fajardo, puerto rico a tourist sights two boats coming into a coastline, one behind the oth
    13·1 answer
  • If figure ABC is reflected across the line x = –3 to create figure A'B'C', which of the following will not be a vertex of figure
    13·2 answers
  • A colony of bacteria grows 5% every hour.How long does it take for the colony to double in size ? with show working ​
    9·1 answer
  • Please help find the rate?
    9·1 answer
  • What is the average rate of change of the function f(x)= 2^x - 3 from x= 4 and x= 6?
    5·1 answer
  • You have a job selling snow cones. You need to fill each cone with ice. Each cone has a radius of 3 centimeters and a height of
    5·2 answers
  • Please help, multiple choice
    14·1 answer
  • Anyone know how to do this
    10·2 answers
  • Tori is throwing a pool party to kick off the summer. Her pool is empty, so she starts filling it with water from a garden hose.
    6·1 answer
  • On a coordinate plane, quadrilateral Q R S T has points (0, 2), (negative 4, 0), (0, negative 3), and (4, 0).
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!