Answer:
-96
Step-by-step explanation:
69-13=13-7/12a-13
56=-7/12a
56 times 12=-7/12 times 12
672=-7a
Move negative over
-672=7a
-672/7=a
a=-96
22. Write the word sentence as an equation. The product of negative 2 and 5 plus a number d = 14.
also please solve and "product" means multiply.
Un laboratorio desea saber la efectividad de un nuevo medicamento para el control de la diabetes. Al realizar un experimento en 10000 individuos encuentra que en el 90 % de ellos el medicamento resulta ser efectivo. Suponiendo que los 10000 individuos son representativos de la muestra, conteste las siguientes preguntas:
a) ¿Cuál es la población?
b) ¿Cuál es la muestra?
c) Identifique el parámetro de interés
d) Identifique la estadística e indique cuál es su valor e) ¿Se conoce el valor del parámetro?
PORFAVOR LA EXPLICACION AL RESPONDER LAS PREGUNTAS
Queremos encontrar diferentes cosas en un experimento dado. Daremos una breve explicación para cada respuesta.
a) La población es el grupo de gente que se estudia, en este caso la medicina es para diabeticos, por lo que la población en este caso sería toda la gente que padece dicha enfermedad.
b) La muestra se refiere a la parte de la población que participa en el experimento, en este caso son 10,000 personas con diabetes.
c) El parametro de interes, es decir, lo que le interesa estudiar a los cientificos, será la efectividad del medicamento que estan desarrollando.
d) Sí, se conoce el valor del parametro, se sabe que en 90% de los casos es efectivo, escribiendo esto de forma decimal, podemos decir que el medicamento es efectivo con una probabilidad de 0.9.
Sí quieres aprender más, puedes leer:
https://brainly.com/question/21705405
what does 2 - 2 equal
Answer:
2 -2 = 0
hope this helps <3
It took a car 2 days to travel 2274 miles. What was this car's average speed, in miles per hour? (round to the nearest mile per hour)
Answer:
47 mph
Step-by-step explanation:
1 day = 24 hours, so 2 days = 48 hours.
2274/48 (2274 miles per 48 hours, simplify!) This equals 47.375. Round it down to 47 mph.
This is assuming the car took no breaks.
Hope this helps!
How do I do 7<1+x in linear equations
Answer:
7<1+x
1+x>7
x>7-1
x>6
Step-by-step explanation:
hope this helps a little
It takes 5 minutes for 7 people to drink 25 pints of water.At this rate,how long would it take 15 people to drink 160 pints of water
Answer:
14.9 min
Step-by-step explanation:
r=rate
r25=5*7
r25=35
r=35/25
r=1.4
substitution
r160=t*15
t=time
r=1.4
1.4*160=t*15
224=t*15/15
224/15=t
14.9 min
please solve for me
Answer:
Kznnznxndnnx xkndnx xjx xjxndjxs mxmzmxmx. J xnd dnxndnxjndnx. Jx xis bx 9837ei3xid dus
Step-by-step explanation:
Szjnznz s8sbbsnsjs
Mzmzmznzm
Mzmsmxmx
Mzmxmkx
Z
Km mmx
Zkskms
Kzmz
point S lies an AB. If AB=34 units, AS=5+2x units, and SB=x+2 units, what is the length of AS in units?
Answer:
5+2x+x+2=34
7+3x=34
7-7+3x=34-7
3x=27
3x/3=27/3
x=9
5+2x=AS
5+(2*9)=AS
5+18=AS
23=AS
23 units
Step-by-step explanation:
30 POINTS IF U ANSWER!
Alonso paid for repairs on his car, and 3
5
of the bill was for labor costs. How much was the total bill if the cost of the labor was $79.50? Let b = the amount of the total bill.
Which equation and solution is correct?
Five-thirds b = 79.50, and the total bill was $47.70.
Three-fifths (79.50) = b, and the total bill was $127.20.
Five-thirds b = 79.50, and the total bill was $212.00.
Three-fifths (b) = 79.50, and the total bill was $132.50.
Answer:
132.50
Step-by-step explanation:
3/5b = 79.50
b = (79.50) / (3/5)
b = 79.50 * 5/3
b = 397.50/3
b = 132.50
132.50 is the total bill
5x+4=5x+4 is it one solution, no solution, or infinite solutions?
Infinite solutions
Try to solve this equation:
5x+4=5x+4
Move all the variables to the left:
5x-5x+4=4
Do you see what I see?
4=4
We end up with a true statement. 4 does indeed equal 4. Hope this helps!
~Just a joyful teen
[tex]-GraceRosalia[/tex]
which one would it be
Answer:
the answer would be c. .........
Which fraction equals a repeating decimal 3/10 6/12 1/3 3/4
Answer:
1/3
Step-by-step explanation:
because 1/3 is 0.333333
How are rates and ratios related?
Answer:
Rates are ratios that are renamed so that one of the numbers is 1. It is usually the denominator of the original ratio.
Solve for n.
n + 1 = 4(n – 8)
i will give a brainliest
n + 1 = 4(n - 8)
n + 1 = 4n - 32
n - 4n = -32 - 1
-3n = -33 / : (-3)
n = 11
What is the GCF of 14 and 16?
PLZZZ HELP X IS 44 .............
Answer:
y = 136
Step-by-step explanation:
the line is 180 degrees so
180-44 = 136 degrees
Answer:
y=136
Step-by-step explanation:
x=44 y=136
44+136=180
Scooter rental company A charges an initial fee of $3 plus $1.15 for every hour. Scooter rental company B charges $1.75 for every hour. A customer finds that after h hours, the scooter rental companies will cost the same.
Which equation represents this situation?
1.75h+1.15h=3
1.75h=3−1.15h
1.15h=3+1.75h
1.15h+3=1.75h
Answer:
This is a little late but it's D. 1.15h+3=1.75h
Step-by-step explanation:
I took this test
Robin earned $4,320 in 9 weeks and worked 40 hours in each week. How much did he earn per hour?
you do 4320÷ 9= 108 and that's your answer right there
justify each step and write their properties
2(7-v)-3v
Answer:
[tex]{ \rm{2(7 - v) - 3v}}[/tex]
• Apply distribution property
[tex]{ \rm{ = 14 - 2v - 3v}}[/tex]
• Simplify:
[tex] = { \rm{14 - 5v}}[/tex]
Answer:
Given, Distributive, Associative, Addition, Simply
Step-by-step explanation:
2(7 - v) - 3v Given
14 - 2v - 3v Distributive
14 + (-2v -3v) Associative
14 + (5v) Addition
14 - 5v Simply
Put the following equation of a one into a slope -intercept form, simplifying all fractions.
8x+6y=-54
Answer:
y = -4/3x -9
Step-by-step explanation:
Slope intercept form is
y = mx+b where m is the slope and b is the y intercept
8x+6y = -54
Subtract 8x from each side
8x+6y-8x = -8x-54
6y = -8x-54
Divide each side by 6
6y/6 = -8x/6 -54/6
y = -4/3x -9
Answer:
y = -4/3x - 9
Step-by-step explanation:
Putting this into 'y=mx+c' form:
i) Firstly, make it only y on the LHS:
6y = -8x-54
ii) Secondly, making the 'y' have a co-efficient of 1. This can be done by dividing both sides by 6:
6y/6 = -8x/6 - 54/6
y = -4/3x - 9
Hence,
y = -4/3x - 9
Hope this helps and be sure to have a wonderful time ahead at Brainly! :D
1)the fish vendor sells 5/7 kilos of bangus for 75.50. if you will buy 2 1/7 kilos of bangus,how much will cost?
Answer: 好吧，您看到当您将其乘以 73 然后除以 时，您将获得免费的旁遮普语和免费的，乔·佩珀将在凌晨 3 点拜访您
Step-by-step explanation: 详见附件
I need help with find this problem out
Answer:
Step-by-step explanation:
Hi there!
∠SRQ = 162°
∠STR = 130°
∠RST = ?
Now;
∠SRQ = ∠RST+∠STR [external angle is equal to the sum of opposite interior angles of triangle]
∠RST = ∠SRQ-∠STR
∠RST = 162°-130°
Therefore, the measure of ∠RST is 32°.
Hope it helps!
If m∠ P = (19x -5) ∘ and Angle P is a right angle, find the value of x;
Answer:
the value of x= 5
Step-by-step explanation:
hey there!
given;
∠P=90°( right angle)
now;
∠p=19x-5
90°+5°=19x
95/19=x
x=5
hope it helps!
Can you use mechanical pencils on the PSAT?
Answer:
no
Step-by-step explanation:
only number 2 pencils im pretty sure
Identify the type of function represented by f(x)= (4).
A. Quadratic
B. Exponential growth
C. Linear
D. Exponential decay
This is an exponential growth function.
If we look at the number that is raised to the power of x, it is greater than 1. Though there is a fraction within this equation, it is not affected by the exponential.
Hope this helps!! :)
Answer: A
Step-by-step explanation:
WILL GIVE BRAINLIEST!!
Hooke’s Law for an elastic spring states that the distance a spring stretches varies directly as the force applied. If a force of 180 newtons stretches a spring 5 cm, how much will a force of 270 newtons stretch the same spring?
Answer:
Simple springs obey Hooke's Law. Hooke's Law states that the force on a spring is proportional to it's displacement from it's resting length:
F = -k*x
Where F is the force, x is how far the string is stretched or compressed, and k is a proportionality constant called the spring constant. The negative sign is because the spring resists stretching.
In this case, we can solve for k using the first case:
(100N) = -k * (5cm)
k = ???
And plug that answer in to find x in the second case:
(360N) = -k * x
This is a "Hooke's Law" problem: the restoring force required to compress or stretch a spring is proportional to the distance the spring is deformed. You can figure solve it by setting up a proportion equation and then using the algebraic tool of cross multiplication to solve for the unkown "stretch".
1) set up the proportion equation
100 = 360
5 x
2) cross multiply to get a linear equation
100x = 5*360
3) solve for x
100x = 1800
x = 18
Upvote
•
1
Downvote
Add comment
Answer:
The law: F=kx
Therefore,
180N = k * 5cm
k = 180÷5= 36N per cm
Using the known constant with the law,
270=36*x
x= 270 ÷ 36 = 7.5cm
8. Negative three times the sum of a number and two is fifteen
Answer:
-3(n + 2)= 15
Step-by-step explanation:
Based on this question, we know that the equation involves multiplication. Here we start our equation with -3!
Then it says "times the sum of a number and two" So let's just say the "number" is "n". The word "sum" means the answer to an addition problem, thus we know that we are adding "n" and 2. Let's put that in parenthesis!
-3(n+2)
And it says "is fifteen" which also means "equals to fifteen"
Therefore, the answer is:
-3(n + 2) = 15
Hope you find this useful :D
Is the table a linear function?
Yes or no
PLEASE HELP WILL MAKE BRAINLIEST!
The expression ____ means 15 minus the product of 5 times the difference of p minus 6. If p = 8, then the value of the expression is 5.FILL IN THE BLANK
A.15 - 5p - 6
B.15 x 5 - (p - 6)
C.(15 - 5) x (p - 6)
D.15 - 5(p - 6)
Answer:
hope you like my answer its letter B
.Write 1.2 - 10-5 in standard form