Answer:
72 ft. 6ft x8ft +24=72 ft
Me. James wants to divide 2 hours of computer time equally among 10 students. What fraction of computer time will each student get?
Answer:
12 min each student
Step-by-step explanation:
beam of light and a mirror study the behavior of light
please help im so tired its not even funny how tired i am pleaase help lol
What is the common factor in 5w + 10w?
10w
15w
w
10
Answer:
15w
Step-by-step explanation:
5+10=15 ..........,................ I think.
Suppose we have a regression line where the intercept is 0.24 and the slope is 0.87. Our variable of interest is x. Suppose the standard errors for the intercept 0.02 and the slope is 0.07. What is the upper estimate for a one unit increase in the x variable according to the margin of error
Answer:
Step-by-step explanation:
Margin of Error = Zcritical * Standard error
Zcritical at 5% confidence interval
Z0.065
what is the range of the data below 6.5,7.6,9.1,2.4,8.8
Answer:
the range would be 6.7 or if you want it to be rounded up, it would be 7.
Step-by-step explanation:
you subtract the highest number by the lowest number. 9.1-2.4= 6.7 or if you need it to be rounded, 7.
The range of the data set given is 6.7.
What is range in statistics?In statistics, the range of a set of data is the difference between the largest and smallest values, the result of subtracting the sample maximum and minimum. It is expressed in the same units as the data.
Given is a data set, we need to find the range of the data set,
S = 6.5, 7.6, 9.1, 2.4, 8.8
The range = max value - min value
= 9.1 - 2.4 = 6.7
Hence, the range of the data set given is 6.7.
Learn more about range, click;
https://brainly.com/question/7038717
#SPJ2
find an expression which represents the sum of (-6x + 9y) + (-10 X - 6y)
Here sorry if this doesn't help
What is the area of the rectangle?
Answer:
c. 15cm^2
Step-by-step explanation:
Answer:
c. 15 cm
Step-by-step explanation:
Area is multiplication of height and length, (or whatever you call it) and 5 multiplied by 3=15
What two numbers multiply to get -30 and add to get -7 ?
Answer:
3 and -10 to get 30
4 and -11 to get -7
Step-by-step explanation:
3 * -10 = -30
4 + (-11) = 4 - 11 = -7
The original price of a pair of shoes is $29.90 and there is a markdown of 10% for a
Black Friday sale. What is the amount of money being taken off the original price?
Answer:
2.99 is the amount that is being taken off and the final price is $26.91
Step-by-step explanation:
Which pairs show equivalent expression
Hey blink!!!!!!! second one is your answer
is of 12 equal to 9?
no
Answer:
12=9
Obviously
.................
Which multiplication problem does the model represent?
Answer:
2/3 * 1/3 = 2/9
Step-by-step explanation:
You see the top 2 lines being shaded which is 2/3's of the whole square.
The second shaded part only covers 1/3 of the whole square.
Thus, you multiply both parts to figure out the darkest shaded part!
1). Solve for n n - 63 = 126 *
Answer:
n=189
Step-by-step explanation:
[tex]n-63=126\\n=126+63\\n=189[/tex]
I hope this helps! :)
Brainliest? ✨
look at the equations below
ax+ 3y=-5
2x-6y=10
Answer:
I love algebra anyways
The ans is in the picture with the steps how i got it
(hope this helps can i plz have brainlist :D hehe)
Step-by-step explanation:
Answer:
Step-by-step explanation:
I assume that they want the value of a when the solution exists.
2(ax+3y)+2x-6y=2(-5)+10
2ax+6y+2x-6y=-10+10
2ax+2x=0
ax+x=0
ax=-x
a=-1
You could then solve for x and y if you wanted x=5 and y=0
Unless a was a typo :)
Which expression is equivalent to 3d + 1?
Answer:
3d + 1
I'm pretty sure it's the same thing.
Kris has saved $3500 to open a cupcake shop. She has to pay a security deposit of $800 and $500 each month for rent. How many months will her savings last?
Answer:
His savings will last 2 months
Step-by-step explanation:
Kris has $3500
he has to pay $1300 a month=
2 months
b(n)=-8-2(n-1)
Find the 9th term
Answer:
The 9th term will be -24
Step-by-step explanation:
The 9th term will be equal to
[tex]b_{n}[/tex] = - 8 - 2(n - 1)
[tex]b_{9}[/tex] = - 8 - 2(9 - 1)
[tex]b_{9}[/tex] = - 8 - 18 + 2
[tex]b_{9}[/tex] = - 24
HELP PLEASE HURRY!!! IM TAKING IT RIGHT NOW!
Answer:
Sorry
Step-by-step explanation:
Your pictures don't open
Brainliest to best answer :D
The difference of two numbers is 63. The sum of two numbers is 111. What are the two numbers?
Answer:
Step-by-step explanation:
Let b>a
b-a=63
b=63+a
a+b=111, substituting 63+a from above in this equation gives you
a+63+a=111
2a+63=111
2a=48
a=24, since b=63+a
b=63+24
b=87 so the two numbers are
24 and 87
A large mixing tank initially contains 1000 gallons of water in which 40 pounds of salt have been dissolved. Another brine solution is pumped into the tank at the rate of 5 gallons per minute, and the resulting mixture is pumped out at the same rate. The concentration of the incoming brine solution is 3 pounds of salt per gallon. If img represents the amount of salt in the tank at time t, the correct differential equation for A is:______.
A) dA/dT=3--.005A
B) dA/dT=5--.05A
C) dA/dT=15--.005A
D) dA/dT=3--.05A
E) dA/dT=15+.05A
Answer:
If A(t) represents the amount of salt in the tank at time t, the correct differential equation for A is is dA/dt = 15 - 0.005A
Option C) dA/dt = 15 - 0.005A is the correction Answer
Step-by-step explanation:
Given the data in the question;
If A(t) represents the amount of salt in the tank at time t, the correct differential equation for A is?
dA/dt = rate in - rate out
first we determine the rate in and rate out;
rate in = 3pound/gallon × 5gallons/min = 15 pound/min
rate out = A pounds/1000gallons × 5gallons/min = 5Ag/1000pounds/min
= 0.005A pounds/min
so we substitute
dA/dt = rate in - rate out
dA/dt = 15 - 0.005A
Therefore, If A(t) represents the amount of salt in the tank at time t, the correct differential equation for A is is dA/dt = 15 - 0.005A
Option C) dA/dt = 15 - 0.005A is the correction Answer
Abigail bought 6/8 of a pound of turkey at the deli She used 2/4 of it to make sandwiches for lunch how much of the turkey did Abigail use for sandwiches
Answer:
2/8
Step-by-step explanation:
I think this is subtraction (if not just tell me i'll edit)
6/8 - 2/4 = 6/8 - 4/8 = 2/8
Answer:
4/8
Step-by-step explanation:
2/4 is equivalent to 4/8
She was 2/8 left over btw
What is the measure of
Angles are not necessarily drawn to scale.
I hate math
x= 139°
180-41= 139°
hope this helped:)
jus wondering is this correct??
Answer:
Yes!
Step-by-step explanation:
Somebody help me asap I’m giving brainliest!
Answer:
C becausee I'm trying to help
find a ! please :))))
Answer:
21.8 cm
Step-by-step explanation:
[tex] \\ 180 - 75 - 31.8 = 37.2 \\ \frac{ \sin(75) }{22} = \frac{ \sin(31.8) }{12} = \frac{ \sin(73.2) }{a} \\ a = \frac{22 \times \sin(73.2) }{ \sin(75) } = \\ a = \frac{21.06}{0.9659} = 21.8[/tex]
I have 7 cups of yogurt give my sister 3 3/5 cup how yogurt remains?
Answer:
3 2/5 cups remaining
Step-by-step explanation:
To subtract fractions, they need a common denominator. I am using 5.
7 is equal to 35/5. Make 3-3/5 into an improper fraction of 18/5.
Now subtract: 35 - 18 = 17. There is 17/5 remaining.
Make it into a mixed number and you will get 3 2/5 remaining.
Unit circle to find exact value of sin 180 degree
Answer:
0
Step-by-step explanation:
Previous studies reported that teenagers spent 8.5 hours per week, on average, on the phone. This mean is supposed to have increased, to test this hypothesis, a random sample of 500 teenagers were interviewed about how many hours per week they spent on their phones. The sample mean was 10.5 hours with a sample standard deviation of 2.35. Conduct a hypothesis test. The null and alternative hypotheses are:
Answer:
Since the calculated value of Z= 19.029 is much greater than Z (0.05) = 1.645 and falls in the rejection region we reject the null hypothesis and conclude that mean of teenagers spending time on phone per week has increased.
Step-by-step explanation:
1) Formulate the null and alternate hypothesis as
H0 : μ≤ 8.5 against the claim Ha: μ > 8.5
2) Choose the significance level ∝ =0.05
3) The test statistic under H0 is
Z= x`- μ/ s/√n
4) The rejection region is Z≥ Z(0.05)= 1.645
5) Computing the value of Z from sample information we get
Z= 10.5-8.5/ 2.35/ √500
Z= 2/ 2.35/ 22.361
Z= 19.029
Since the calculated value of Z= 19.029 is much greater than Z (0.05) = 1.645 and falls in the rejection region we reject the null hypothesis and conclude that mean of teenagers spending time on phone per week has increased.
Alex wants to buy a house in 5 years. If he puts $3245 in an account at 7.35% compounded annually for 5 years. How much money will he have for a down payment on his house?
Answer: 32.78
Step-by-step explanation:
Select all the expressions that are equivalent to 4b+4+4b+2-+b
Answer: 9b+6
Step-by-step explanation: