Answer:
a = 3.5
Step-by-step explanation:
15.4 = -2.1 + a/0.2
Combine like terms:
15.4 = 2.1 + 5a
Swap sides:
-2.1 + 5a = 15.4
Determine the center and radius of the circle described by the equation. (x+1)2+(y−3)2=25
Answer: 2 (x + y) = 29
2 (x + y - 2) = 25
y = 29/2 - x
Expanded forms:
2 x + 2 y - 4 = 25
2 x + 2 y - 29 = 0
Real solution:
y = 29/2 - x
Solution:
y = 29/2 - x
Solution for the variable y:
y = 1/2 (29 - 2 x)
Step-by-step explanation:
hope its helpss
Find the slope of the line
Answer:
1/2
Step-by-step explanation:
Pick two points on the line
I picked (0, 2) and (2, 3)
m = (3-2)/(2 -0) = 1/2
Given 144= 12^2 which statement is true?
I’m I right ? If not can you correct me please
Answer:
I believe that you are correct.
Step-by-step explanation:
1. Dois angulos correspondentes, de-
terminados por duas retas paralelas,
interceptadas por uma transversal,
medem 2x + 40° e -3x + 90°
a) Determine o valor de x.
b) Determine a medida de cada um dos
ângulos dados.
Answer:
Step-by-step explanation:
dadds
The amount of time a certain brand of light bulb lasts is normally distributed with a mean of 1200 hours and a standard deviation of 35 hours. Using the empirical rule, determine what interval of hours represents the lifespan of the middle 68% of light bulbs.
Answer:
(1165, 1235) (hours)
Step-by-step explanation:
The "middle 68%" of a set of normally distributed data is that data that lies within ONE standard deviation of the mean:
(1200 - 35, 1200 + 35), or
(1165, 1235) (hours)
This is an application of the Empirical Rule.
The interval of hours represents the lifespan of the middle 68% of light bulbs is (1165, 1235) (hours).
What is the standard deviation?It is a measurement of statistical data dispersion. The degree to which the value varies is known as dispersion.
With a mean of 1200 hours and a standard variation of 35 hours, the length of time a certain brand of light bulb lasts is typically distributed.
The data that is within one standard deviation of the mean is referred to as the "middle 68 percent" of a collection of normally distributed data:
The interval of hours represents the lifespan of the middle 68% of light bulbs is found as;
(1200 - 35)=1165
( 1200 + 35)=1235
(1165, 1235) (hours)
Hence,the interval of hours represents the lifespan of the middle 68% of light bulbs is (1165, 1235) (hours).
To learn more about the standard deviation refer to:
https://brainly.com/question/16555520
#SPJ2
PLEASE HELP ASAPPPP!!!!!!!
here is a screenshot of the math problem
In the rectangle LOBA, if m∠1 = 36°. Find m∠OBA and m∠2.
m∠OBA =
m∠2 =
Answer:
90 54
Step-by-step explanation:
Use the spinner to find the theoretical probability of spinning a 1 and then a 2. Round answer to the nearest hundredth. A spinner is divided into 9 equal sections. Starting from the top right and moving clockwise direction, the regions are labeled 1,2,3,4,5,6,7,8, and 9. The spinner pointed at near the boundary line of 3.
Answer:
1/18
Step-by-step explanation:
yur welcome
In an alloy of gold and silver the ratio of the metals is 6:4. How much gold is there in 200 grams of this alloy?
Answer:
120 gold is in the alloy
Step-by-step explanation:
G:S
6:4
6+4=10
200/10=20
20*6=120
Hope this helps!
Answerrrrrrrrrr: )?
Answer:
I think the answer is D
Step-by-step explanation:
Which cube is a unit cube?
a cube that is 9 inches long, 9 inches wide, and 9 inches high
a cube that is 3 meters long, 3 meters wide, and 3 meters high
a cube that is 1 yard long, 1 yard wide, and 1 yard high
a cube that is 11 centimeters long, 11 centimeters tall, and 11 centimeters high
Answer:
Option 3
Step-by-step explanation:
A unit cube has side lengths of 1
Answer:
3 is the answer
Step-by-step explanation:
A unit cube has side length that is 1
help out please !
Select all of the quadratic expressions in vertex form.
A (2+4)^2– 3
B (- 5)^2+ 2
C x^2+ 2x + 5
D x (x+2)
E (2+4)^2
Answer:
A C E
Step-by-step explanation:
Pls answer quickly I only have a 1 hr left to submit this assignment and I’m so stuck on it
Please hurry I need this soon and no links
SANDBOX A rectangular sandbox at a playground is 3 yards long by 2.3 yards wide. What is the area of the sandbox?
Answer:
the answer is 6.9
Step-by-step explanation:
this is because 3 x 2.3 =6.9 because 3 x 2 = 6 and 3 x 3= is 9 so together it is 6.9
What is the result of 3 divided by three-fifths?
A number line going from 0 to 3.
One-ninth
One-fifth
5
9
Answer:
its 5 or c
Step-by-step explanation:
ur weecome
Answer:
What is the result of 3 divided by three-fifths?
A number line going from 0 to 3.
One-ninth
One-fifth
5
9
Step-by-step explanation:
the awnser is 5
Determine the quadratic curve of best fit for the data. Then estimate what the value of will be when = −4. {(−3,2), (0,5), (1,7.3), (−1,3.3), (−6,5), (−7,7.3)} Answer choices 4.3 5.3 3.3 2.3
Answer:
The value of 'y' when x = -4 is 2.3
Step-by-step explanation:
Curve of best fit can be found by plotting the points on MS Excel and drawing a curve that goes through the points as shown in the attached graph
The equation that approximate the curve from which the y-value at a x-value of -4 can be estimated is found as follows
The general equation for a quadratic equation is y = a·x² + b·x + c
Therefore, we get;
2 = a·(-3)² + b·(-3) + c
2 = 9·a - 3·b + c
5 = 0·a + 0·b + c
5 = c
7.3 = 1·a + 1·b + c = a + b + 5
7.3 = a + b + 5
2.3 = a + b
2 = 9·a - 3·b + 5
-3 = 9·a - 3·b
Solving gives;
a = 13/40, b = 79/40
The equation of the quadratic curve is therefore;
y = (13/40)·x² + (79/40)·x + 5
When x = -4, we get;
y = (13/40)·(-4)² + (79/40)·(-4) + 5 = 2.3
When x = -4, y = 2.3
Plotting the points on MS Excel we find from the attached graph that the estimated value of 'y' when x = -4 is as calculated (2.3).
Barkley's team won 40% of their games last season. If they won 12 games total last season, how many games did they play?
Step-by-step explanation:
40% × 12 = 4.8
12 + 4.8 = 16.8
rounded off = 17 games
THIS IS MY LAST ONE PLEASE HELP
Answer:
x=56
Step-by-step explanation:
okay so
x=180- (64+60)
x= 180-124
x= 56
(x+5<2) help quick im at school testing..
Answer:
x<-3
Step-by-step explanation:
(x+5<2)
Subtract 5 from both sides;
x+5-5<2-5
Simplify;
x<-3
Answered by NONE other than the ONE & ONLY #QUEEN herself aka #DRIPPQUEENMO!!!
HOPE THIS HELPED!!!
Constance's car has a 12-gallon gas tank and can travel 25 miles on one gallon of gas. Constance begins with a full tank of gas and drives at a constant rate of 40 miles per hour. How many hours can you she drive before her car runs out of gas
Answer:
7.5 hours
Step-by-step explanation:
12 x 25 = 300
the distance she can travel with a full tank of gas is 300 miles
300 = 40t
300/40 = t
7.5 = t
write in slope intercept form: 4x-5y= -20
Step-by-step explanation:
4x - 5y = -20
-5y = -4x -20
y = 4/5x + 4
Please help me whoever know Tangent ratio
Answer:
Opposite/adjacent
Step-by-step explanation:
Tangent = Opposite/adjacent
Mhanifa Plz help me with this thank you!
Answer:
D
Step-by-step explanation:
This is an example of the Pythagorean theorem.
In triangle BEH, the sum of the squares of the sides of the two smaller sides, BE and BH is equal to the longest side squared, EH.
CO The town librarian bought a combination of new release movies on DVD for $20 Let x represent the number of new releases, and let y represent the number of of $500 and wanted to purchase as many DVDs as possible, which values of new-release and classic movies bought? 8. y = 45 o 10, y = 22 x = 16 = 22 O 18, y = 18
Answer:
O represents? Is it 0 or O?
Ronald is growing 1/3 inch each year. How many years will it take for him to grow 5 inches?
can someone please help me with this one?
Answer:
12=0.5d-g or g=0.5d-12
Step-by-step explanation:
12 gallons
1/2 gallon a day
g gas
d days
g=0.5(5)-12
2.5-12
9.5 gallons after 5 days
PLEASE HELP OR I WILL FAIL PLEASE U WILL GET A LOT OF POINTS
Answer:
b
Step-by-step explanation:
did this yesterday
hello im a person
are you a person
NANI
Answer: i am a person
Step-by-step explanation:
Answer:
heloo
i am a person
or am I.
pls help me!! will give brainliest
Answer: (0,0)
If AB is translated right 5 units and down two then both points are translated by that amount.
A currently is (-5, 2)
x=-5 and y=2
Since youre going right by five your x value will increase by 5 so the point will instead be at x=0
Since youre going down by two your y value will decrease by 2 so the point will instead be at y=0
x=0 and y=0
(0,0)
Answer: its 0,0
Step-by-step explanation: