Answer:
-2
Step-by-step explanation:
2x-1=x-3
2x=x-2
x=-2
I REALLY need help with this question please.
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Work Shown:
Plug in t = 2 and we get the following
[tex]a = 500*\left(\frac{3}{4}\right)^{t}\\\\a = 500*\left(\frac{3}{4}\right)^{2}\\\\a = 500*\left(0.75\right)^{2}\\\\a = 500*0.5625\\\\a = 281.25\\\\[/tex]
The answer is choice D. There are 281.25 mg of aspirin in the bloodstream after 2 hours.
-----------------
Side notes:
The 500 represents the initial amount of aspirin (in mg) in the bloodstream. This is the amount when t = 0.The 3/4 converts to 0.75; when solving 1+r = 0.75, we get r = -0.25, and this shows a 25% reduction in aspirin each time t goes up by 1. Every hour, the amount of aspirin in the bloodstream reduces by 25%Answer:
375
Step-by-step explanation:
because if you look at the question 3\4 is 1 hour with the aspren 500 after 2 hours you 2 the ammount i think
what equation of a line passes through the points (0,8) and (6,4)
Answer:
y=-3/2x+6
Step-by-step explanation:
You will need to find the equation of the line in slope-intercept form y=mx+b.
First, find the slope m using slope formula m = (y_2-y_1)/(x_2-x_1) which is m=(6-(-6))/(0-8)=-12/8=-3/2
Now that you found the slope, your equation intercept form looks like y=-3/2 x+b.
Both points (8, -6) and (0.6) belong to this line, therefore both points coordinates satisfy line above which means: 6=-3/2(0)+b (i used second point here)
Solving for b we will get y intercept which is b=6
Finally, the line that passes through points (8,-6) and (0,6) has equation: y=-3/2 x + 6
Given quadrilateral EFGH at e(-4,7) f(8,4) G(t,-5) and h(-7,-1) using coordinate geometry prove EFGH is a rectangle
The above question was not properly written.
Complete Question
Given quadrilateral EFGH with vertices at E(-4,8), F(8,4), G(5,-5) and H(-7,-1), prove using coordinate geometry that EFGH is a rectangle.
Answer:
Quadrilateral EFGH is a rectangle.l because:
EF = GH and FG = EH
Step-by-step explanation:
The formula for coordinate geometry is given as :
√(x2 - x1)² + (y2 - y1)² when we have coordinates: (x1, y1) and (x2 , y2)
For the quadrilateral EFGH with given coordinates above to be a rectangle,
EF = GH
FG = EH
Hence:
For side EF
E(-4,8), F(8,4)
= √(8 - (-4))² + (4 - 8)²
= √12² + -4²
= √144 + 16
= √160 units
For side FG
F(8,4), G(5,-5)
=√(5 - 8)² + (-5 - 4)²
= √-3² + -9²
= √9 + 81
= √90 units
For Side GH
G(5,-5) , H(-7,-1)
= √(-7 - 5)² + (-1 - (-5))²
= √-12² + 4²
= √144 + 16
= √160 units
For side EH
E(-4,8), H(-7,-1)
= √(-7 -(-4))² +(-1 - 8)²
= √-3² + -9²
= √9 + 81
= √90 units
From the above calculation, we can see that truly,
EF = GH
FG = EH
Therefore, quadrilateral EFGH is a rectangle.
What is the approximate area of
the figure? Use 3.14 for T.
-12 m-
A. 57 square meters
B. 113 square meters
C. 226 square meters
D. 452 square meters
A typical security camera frame rate is 30 frames per second. If a security incident over a 27 second period must be examined, how many frames may have to be checked for security purposes?
Answer:
810 frames
Step-by-step explanation:
30 frames per 1 sec : 'f' frames per 27 sec
30 x 27 = 810
ILL MARK U BRAINLIEST
A race car is running at a constant rate toward the finish line. The equation y=3x+2 can be used to represent this situation, where y is the distance traveled in miles and x is the number of minutes the car has been running.
Which statement best describes the distance traveled, given the equation?
a. Two miles from the starting point, the race car is running 3 miles per minute.
b. Three miles from the starting point, the race car is running 2 miles per minute.
c. The car is running 2 miles per minute.
d. Five miles from the starting point, the car is running 3 miles per minute.
Answer:
a
Step-by-step explanation:
Answer:
The answer is A.
Step-by-step explanation:
The equation of the line that goes through (-3,5) and (2,-4)
Answer:
y=-9/5x-2/5
Step-by-step explanation:
Answer:
y=-9/5x-2/5
Step-by-step explanation:
Slope=m=Rise/Run=(y2-y1)/(x2-x1)=(-4-5)/(2-(-3))=(-9)/(5)=-9/5
So the equation becomes y=-9/5x+b
Plug in one of the given points:
y=-9/5x+b
-4=-9/5(2)+b
-4=-18/5+b
-0.4=b
b=-0.4
Therefore the equation of the line is y=-9/5x-2/5
the equation of the straight line passes through the point (0,2) and has a gradient of 1/3 is????
[tex]y = mx + b \\ m = slope /gradient \\b = y - intercept[/tex]
Substitute m = 1/3 in the equation.
[tex]y = \frac{1}{3} x + b[/tex]
Substitute the given coordinate point then solve the equation for b-term.[tex](x,y) = (0,2)[/tex]
[tex]2 = \frac{1}{3} (0) + b \\ 2 = 0 + b \\ 2 = b[/tex]
Rewrite the equation by substituting the b-value.[tex]y = \frac{1}{3} x + 2[/tex]
Answer[tex] \large \boxed{y = \frac{1}{3} x + 2}[/tex]
If you have any question related to the answer, feel free to ask via comment.
write the equation of a line passing through the points (-3,4) and (3,4)
Answer:
m=0 y=4
Step-by-step explanation:
William got scores of q sub 1, , and q sub 3 on three quizzes.
a. Write a formula for the average x of all three quizzes.
b. William got an 85 and an 88 on the first two quizzes. What formula can William use to determine the score he needs on the third quiz to get an average of 90? What score does he need?
Answer:
a. The average is =(++) .
b. He can use the formula =−− q sub 3 , equals 3 x minus , q sub 1 , minus , q sub 2. He will need a score of =()−−= q sub 3 , equals 3 open 90 close minus 85 minus 88 equals 97 on his third quiz.
Step-by-step explanation:
0.42, 0.84, 1.26, 1.68, ............
Find the 63rd term
a
26.28
b
27.3
c
26.46
d
24.64
Answer:
Step-by-step explanation:
Find the nth term so the sequence is going up by 0.42
0.42*63=26.46
63rd term=26.46
1. Johnny typically drives his truck between 250 and 300 miles a day for work. Last week he worked 5 days and drove a total of 1300 miles. Is this reasonable?
Answer:
1350
Step-by-step explanation:
Elena made $1,350 in 18 days. Let c represent the amount of money she made each day. If Elena made the amount of money each day, how much did she make in 1 day? Write an division equation.
The rate of money earned per day will be $75 per day.
What is the rate of change?The rate of change is the change of a quantity over 1 unit of another quantity.
Most of the time the rate of change is the change with respect to time.
For example the speed 3meter/second.
As per the given,
Elena made $1,350 in 18 days.
Earning per day = ($1350/18) = $75 per day.
Hence "The rate of money earned per day will be $75 per day".
To learn more about the rate of change here,
brainly.com/question/12786410
#SPJ2
Seven cups of yogurt cost $3.50. how much does one cup of yogurt cost?
Answer:
50 cents or .50
Step-by-step explanation:
Solve for x.
8 + x = -4
Answer:
Answer:
x = -12
Step-by-step explanation:
Let's solve your equation step-by-step.
8+x=−4
Step 1: Simplify both sides of the equation.
x+8=−4
Step 2: Subtract 8 from both sides.
x+8−8=−4−8
x=−12
Answer:
[tex]x = 12[/tex]
Step-by-step explanation:
isolate the variable by dividing each side by factors that do not contain the variable
+(8-9)-(32-40)+(16+20)=
Answer:
43
Step-by-step explanation:
( 8 - 9 ) - ( 32 - 40 ) + ( 16 + 20 )=
-1 - ( -8 ) + 36
-1 + 8 + 36
7 + 36
43
2 negatives become a positive.
Hope this helped!
Have a supercalifragilisticexpialidocious day!
Help please ..........
Answer:
m∠1 = 30°
Step-by-step explanation:
Properties of a rhombus,
1). Sum of adjacent angles is 180°.
2). Diagonals bisects the angles of a rhombus
By property - (1)
m∠M + m∠N = 180°
120° + m∠N = 180°
m∠N = 180 - 120
= 60°
By property - (2)
Diagonal PM will bisect the angle M.
m∠1 = m∠2
m∠1 = [tex]\frac{1}{2}(\angle N)[/tex]
= [tex]\frac{1}{2}(60)[/tex]
= 30°
The table shows the sales price and the discount offered at different stores for a bicycle that Juan wants to pure
Store Name
Discount
Z-Mart
Regular price
12% off
$50 off
25% off
Bike World
$265
Juan wants to get the best deal. Which store offers the bike at the lowest price after the discount?
O A Z-Mart
OBBike World
OC. Not enough information to tell
D. ABC Sports
Answer:A
Step-by-step explanation:
runs away cutely
Can someone tell me some good puns on cheese ?
(Don’t mind the purpose) Thank you !
Answer:
What Did the Blind Man Say after Being Handed a Cheese Grater?
"That's the most violent book I've ever read."
Step-by-step explanation:
Answer: I could but it will be a little cheesy
Step-by-step explanation:
Writing an equation to represent the following situation? Maria wants to buy apples and pears at the store. Let x = number of apples and y = the number of pears. Apples are $4 a pound and pears are $2 a pound. She has a total of $20 to spend.
Answer:
4x+2y=20
Step-by-step explanation:
x=apples ($4/lb)
y=pears ($2/lb)
please help asap!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!will give brainliest if answer all
Answer:
1.
1/10 chance
2.
2/10 chance
3.
2/10 chance
4.
0/12 chance or maybe 0/10
Step-by-step explanation:
1.1/5 chance for the number and 1/2 chance for the heads/tails so
2.2/5 chance of getting it to land on an even number + 1/2 for heads
3..2/5 chance of getting it to land on an even number and 1/2 for tails
4.you cant land a 6
Employees at a large office building took a survey. The results show that those who began work earlier tended to drink less tea. Which statement is most likely true?
Answer:
B) There is a correlation between start time and amount of tea consumed. There may or may not be causation. Further studies would have to be done to determine this.
Step-by-step explanation:
Correlation in terms of statistics refers to the relationship that exists between two components. The extent to which the two components or data are related to each other is highlighted with correlation. The change in one component brings the same amount of change in the other component. Correlation discloses the way the variables are related.
In the given excerpt, the correlation between start time and amount of tea consumed has been highlighted. This data is required for further research about the cause.
In New York, state sales tax rates vary by county. In Allegany County, the sales tax rate is 8 1/2%. At a local store a book costs $12.99 and a video game costs $39.99. Rounded to the nearest cent, how much more is the tax on the video game than the tax on the book?
Answer:
12.99/100 X 108.5 = 14.09
39.99/100 X 108.5 = 43.39
43.39 - 14.09 = 29.3
difference = $29.30
please help me , if f(x) = c and g(x) = f (x-3), which of the following best describes the graph of y = g(x)
At 5:30 p.m., the temperature was recorded as 4 °F. At 10:00 p.m., the temperature had dropped 2 °. Which number line below best shows the
temperature at
10:00 p.m.?
Answer:
the answer is A
Step-by-step explanation:
I've been given this for maths and I have no clue what to do can someone help me out?
What is the x-intercept?
x - intercept is (-4,0)
Answer:
x- intercept = - 4
Step-by-step explanation:
The x- intercept is the value of x on the x- axis where the line crosses.
The line crosses the x- axis at x = - 4, which is the x- intercept
I don't understand I need help
Answer:
I think A
Step-by-step explanation:
because the side lengths should be the same and going down the middle.
if I am wrong plz tell me
The product of 6g2 and -2g3 is equals to
Answer:
We conclude that:
[tex]\left(6g^2\:\right)\times \left(-2g^3\right)=-12g^5[/tex]
Step-by-step explanation:
Given
6g²-2g³The product of 6g² and -2g³ can be determined by multiplying each other such as:
[tex](6g^2\:)\times \:(-2g^3)[/tex]
Apply the rule: a(-b) = -ab
[tex]\left(6g^2\:\right)\times \left(-2g^3\right)=-6g^2\times \:\:2g^3[/tex]
Apply exponent rule: [tex]a^b\times \:a^c=a^{b+c}[/tex]
[tex]=-6g^{2+3}\times \:2[/tex]
[tex]=-6g^5\times \:2[/tex]
[tex]=-12g^5[/tex]
Therefore, we conclude that:
[tex]\left(6g^2\:\right)\times \left(-2g^3\right)=-12g^5[/tex]
9.How much interest do you earn when you deposit $100 at 25% for 2 years?
10.In question #9, how much does the bank owe you at the end of those two years?
Answer:
For simple interest: $50, for compound interest: $56.25
Step-by-step explanation:
Year 1) 100+100(.25) = 125
Year 2) 125+125(.25) = 125+31.25 = $156.25
156.25 - 100 = $56.25
25 x 2
=50
