Step-by-step explanation:
( x-2y=12)5
5x-10y=60
- 5x+3y=-44
____________
13y=-104
y=-104/13
3x + 2 + 11x
It must be simplified
Answer:
14x+2
Step-by-step explanation:
3x+11x = 14x then +2 is left over so it's 14x+2
the triangle shown below has an area of 50^2
Answer:
50^2
is 50*50 which is 2500
Step-by-step explanation:
CAN YOU PLEASE MARK ME BRAINLIEST THANK YOU AND HAVE A NICE DAY !
hey yall again im really bad with triangles and theorems if someone could help me answer this question i will appreciate it. I need to figure out the postulate theorem
Answer and Step-by-step explanation:
The postulate of theorem that can be used to conclude the two triangles are congruent will be the ASA congruence postulate.
ASA means Angle Side Angle, in which two Angles in a triangle are congruent, and the side in between the two angles are congruent.
So, angle TXW is congruent to angle TWR, and the side that is in between is side WX, by the reflexive property of congruence.
#teamtrees #PAW (Plant And Plant)
Explain step by step how to use the horizontal method the multiple the two polynomials
Answer:
Step-by-step explanation:
Multiply each term of the first polynomial with the second polynomial. Then combine the like terms.
(3a² + 5a - 2)* (5a² -3a + 4)
= 3a² *(5a² -3a + 4) + 5a*(5a² -3a + 4) - 2*(5a² -3a + 4)
=3a²*5a² - 3a*3a² + 4*3a² + 5a*5a² - 3a*5a + 4*5a + 5a²*(-2) - 3a*(-2) + 4*(-2)
=15a⁴ - 9a³ + 12a² + 25a³ - 15a² + 20a - 10a² + 6a - 8
= 15a⁴ - 9a³ + 25a³ + 12a² - 15a² - 10a² + 20a +6a - 8
= 15a⁴ + 16a³ - 13a² +26a - 8
The population of fish in an aquarium can be modeled after exponential growth. If
there were originally 3 fish and after 6 weeks there were 31 fish, how many fish
would there be after 14 weeks?
Word problems
Answer:
108
Step-by-step explanation:
Homework due at 12:00
I Need Help
Answer:
k = - 7.5
Step-by-step explanation:
Slope "m" of a line through points
( [tex]x_{1}[/tex] , [tex]y_{1}[/tex] )
( [tex]x_{2}[/tex] , [tex]y_{2}[/tex] )
is m = [tex]\frac{y_{2} -y_{1} }{x_{2} -x_{1} }[/tex]
Slopes of perpendicular lines are opposite reciprocal: [tex]m_{1}[/tex] [tex]m_{2}[/tex] = - 1
~~~~~~~~~~~~~~~
The slope of a line through points (0, 7) and (2, 10)
[tex]m_{1}[/tex] = [tex]\frac{10-7}{2-0}[/tex] = [tex]\frac{3}{2}[/tex]
Slope of perpendicular line through points (3, 5) and (k, 12) is [tex]m_{2}[/tex] = [tex]-\frac{2}{3}[/tex]
or [tex]m_{2}[/tex] = [tex]\frac{12-5}{k-3}[/tex]
[tex]\frac{7}{k-3}[/tex] = [tex]-\frac{2}{3}[/tex]
2(k - 3) = - 21
k - 3 = - 10.5
k = - 7.5
Normal distribution: Area between two points You might need: Calculator, Z table A set of mathematics exam scores are normally distributed with a mean of 80.2 points and a standard deviation of 4 points What proportion of exam scores are between 82 and 85.6 points? You may round your answer to four decimal places.
Answer: .2379
Step-by-step explanation:
Answer: 0.2379
Step-by-step explanation:
0.9115 - 0.6736 = 0.2379
50 POINTS AND WILL MARK BRAINLYEST***GIVE A DETAILED EXPLANATION AS TO HOW YOU GOT YOUR ANSWER**
Answer:
264
Step-by-step explanation:
3 + 8 = 11
3 - 1 = 2
3 - 1 = 2
2 + 4 = 6
11 x 2 x 2 x 6 = 264
4) Mitzi is 64 inches tall and casts a 48 inch shadow. Her daughter, who is standing next to her,
casts a 30 inch shadow. How tall is her daughter?
a) 47.5 in.
b) 40 in.
c) 35 in
d) 22.5 in.
I
Answer:
She is 46 inches tall!
Step-by-step explanation:
Please help me ASAP
What is the product of (3+square root of 7)(3-square root of 7)
( 3 + √ 7 ) ( 3 − √ 7 ) = 2 Explanation: You can simplify this expression by using the formula for the difference of squares a 2 − b 2 = ( a − b ) ( a + b ) In your case, you ca say that a = 3 and b = √ 7 . This means that you have ( 3 + √ 7 ) ( 3 − √ 7 ) = 3 2 − ( √ 7 ) 2 = 9 − 7 = 2 Alternatively, if you don't know the formula for the difference of squares, you can rewrite this expression by expanding the parantheses ( 3 + √ 7 ) ( 3 − √ 7 ) = 3 ⋅ 3 − 3 ⋅ √ 7 + 3 ⋅ √ 7 − √ 7 ⋅ √ 7 Once again, the result will be 3 ⋅ 3 − √ 7 ⋅ √ 7 = 3 2 − 7 = 2
PLS HELP QUICK I NEED THIS TO PASS
Olivia deposit 6952 in a savings account paying 3.72% interest to the nearest dollar how much money does Olivia have in total after 16 years
PLS HELP!!! Gold-198 has a half-life of 2.7 days. How much of an 96 g sample of gold-198 will be left after 8.1 days?
Answer:
Step-by-step explanation:
12 grams
If 26 feet 10 inches is cut from a wire that is 44 feet 8 inches long what is the length of wire that is left ?
Answer:
17 feet 10 inches
Step-by-step explanation:
Please see the attached image for the work!
3x +2y=10 4x-y=6 using substitutional method
Answer:
( 2 , 2 )
Step-by-step explanation:
Solve the eqaution :
3x +2y=10
4x-y=6
Solve the eqaution for y :
3x + 2y = 10
y = -6 + 4x
Substitute for y : 3x + 2 ( -6 + 4x ) = 10
x = 10
Substitute for the value of x : x = 2
Substitute the given value of x into the eqaution
y = -6 + 4x : y = -6 + 4 × 2
Solve the eqaution: y = -6 + 4 × 2
solve the eqaution for y : y = 2
y = 2 A possible solution : the ordered solution pair is
( 2 , 2 )
"The director of special events for Sun City believed that the amount of money spent on fireworks displays for the Fourth of July was predictive of attendance at the Fall Festival held in October. She gathered the following data to test her suspicion.
4th of July ($000) Fall Festival (000) 4th of July ($000) Fall Festival (000)
8.0 6.8 12.0 9.5
6.0 6.4 7.5 10.4
12.0 11.6 9.0 6.6
10.5 10.2 10.6 10.1
8.5 6.0 10.0 6.1
12.5 11.1 7.5 9.0
9.0 7.5 10.0 12.6
5.5 8.4
a-1. Compute and report the regression equation that predicts "fall festival attendance" with "amount spent on Fourth of July fireworks". (Round your answers to 2 decimal places.)
a-2. Report the coefficient of determination. (Round your answer to 2 decimal places.) %
a-3. Interpret the regression coefficient. (Round your answer to 4 decimal places.)
b. Evaluate the regression assumptions based on an analysis of the residuals .
The regression assumptions based on an analysis of the residuals is_______.
Answer:
ŷ = 0.52X + 3.99 ;
0.26 ;
0.5123
Step-by-step explanation:
4th of July :
8.0
6.0
12.0
10.5
8.5
12.5
9.0
5.5
12.0
7.5
9.0
10.6
10.0
7.5
10.0
Fall festival :
6.8
6.4
11.6
10.2
6.0
11.1
7.5
8.4
9.5
10.4
6.6
10.1
6.1
9.0
12.6
Using technology, the regression equation which predicts fall festival attendance with amount spent on 4th of July fireworks is ;
ŷ = 0.52X + 3.99
Coefficient of determination ; R² is 0.26
This means that about 26% of variation in the fall festival attendance is explained by the regression line.
The regression Coefficient, R = sqrt(R²) = sqrt(0.2625) = 0.5123
This depicts that a faiy strong positive correlation exists between the amount spent on 4th July fireworks and the fall festival attendance.
Helpppp plssssss I don’t understand
Answer:
2 3/4
Step-by-step explanation:
2 and 3/4 is the same as 11/4 and that simplified is 2.75 them multiply by 100 and its 275%
Susan has a bag full of
marbles. The ratio of red
to blue marbles is 6:5. If
there is a total of 66
marbles, how many blue
marbles are there?
Answer:
36 blue marbles
Step-by-step explanation:
find the slope of the line through the points (10,6) and (-1,8)
Answer:
-2/11
Step-by-step explanation:
A slice of a pie weighs 8 ounces. How many pounds do 6 slices of pie weigh?
Answer:
48 ounces
Step-by-step explanation:
1 slice= 8 ounces
6 slices×8=48
Answer:
48
Step-by-step explanation:
Five cards are drawn from a standard deck of 52 cards
what is the probability of a hand containing 3 hearts and 2 clubs
0/52 I think thats the answer
A ball shaped like a sphere has a radius of 5.4 cm . Which is the closest to the volume of the ball in cubic centimeters?
A-659.58
B-371.02
C-366.44
D-494
Please help ASAP AND SHOW YOUR WORK PLEASE
Answer:
answer is A -659.58
Step-by-step explanation:
Is it rt?
Suppose the probability of failure in a binomial experiment is 0.15. What is
the probability of success?
A. 0.65
B. 0.35
C. 0.85
D. 0.75
Answer is 0.85
Answer:
C
Step-by-step explanation:
Like you said, the answer is 0.85.
On three days, Ben throws darts at a target.
Here are his results.
Number of hits
Number of misses
30
10
Number of throws
Monday
40
Tuesday
30
Wednesday
50
Total
120
18
12
36
14
84
36
(1)
a) Use Tuesday's results to estimate the
probability of Ben hitting the targe.
b) Use the total of the results to estimate the
probability of Ben of hitting the target.
c) Which estimate would give the most reliable probability?
A- the one from Tuesday or B - the one from the Total?
(1)
(1)
Total marks: 3
Answer:
0.6 ;
0.7
Reaukt in B will give a better estimate because it has a larger sample size (120) than the result on A ,with sample size (30)
Step-by-step explanation:
Probability of hitting the target using Tuesday's result :
P(hitting the target):
Probability = required outcome / Total possible outcomes
Required outcome = number of hits = 18
Total possible outcomes = number of throws =. 30
Hence, Probability of hitting the target using Tuesday's result : 18 / 30 = 0.6
B.)
Probability of hitting the target using Total result:
Required outcome = number of hits = 84
Total possible outcomes = number of throws =. 120
= 84 / 120
= 0.7
Gabriel tossed a paper cup 40 times and recorded how the cup landed each time. He organized the results in the table shown. Find the experimental probability that the cup will NOT land right-side up. Express your answer as a fraction in simplest form.
Answer:
31/40
Step-by-step explanation:
PLEASE HELP WITH EXPLAINING I WILL MARK BRAINIES!!!
Walking Two Dogs
Katie walks her dog every morning and she always walks at the same average speed.
She walks 1% miles in a half hour.
1. What is her average speed in miles per hour?
Explain how you found your answer.
2. In the evening, Katie walked her dog for 12 hours at the same average speed.
How far did they walk?
Explain how you found your answer.
3. On Saturday, Katie walked her dog for a total of 5%/4 miles, traveling at their same average spee
How long did it take them?
Explain how
you
found
your answer.
Answer: 3 mph
Step-by-step explanation:
1. 1/2 mph for 1/2 an hour as they said, meaning that they would've walked for 3 miles kn an hour.
2. 4 and 1/2 miles.
3 + 1 2/4. = 4 1/2
3. 1 3/4 hours.
3 + 2.25 = 5.25
3 x .75 = 2.25
3 miles per hour.
4 times a number increased by 10 is no less than 18, whats the equation please i need it less than 10 mins and pleasse dont put fake answer will get reported
Answer:
4x + 10 is less than or equal to 18
Hope this helps :) Good Luck!
I need help with the question pictured.
Answer:
A. 1/x to the 4 y
Three friends drove radio controlled cars around a track. The table below shows the number of laps
completed by each person and the time it took.
Kaitlin
Keiko
Ann
Time (minutes)
9
7
5
Number of laps
54
28
25
Write the number of laps completed per minute for each person. Then determine who drove the fastest.
Number of laps completed per minute by Kaitlin:
Number of laps completed per minute by Keiko:
Number of laps completed per minute by Ann:
Select the person who drove the fastest.
Kaitlin
O keiko
Ann