Answer:
x=4.5
Step-by-step explanation:
8*x = 4*9
8x = 36
x = 4.5
Answer:
9/2
Step-by-step explanation:
Let the unknown number = n
Therefore, we can decode your question in the following manner:
8 x n = 4 x 9
Recognize that 4 x 9 = 36
So, 8 x n = 36
Lets divide 8 in both sides
n = 36/8 = 9/2
Therefore, n = 9/2
Lengths of time, in months for a tumor to recur after chemotherapy I need answers for questions 1-8
Answer: irdk the awnser but F on that tumor
determine the value of X and Y
PLS HELP :)
Answer:
x=90º
y=64º
Step-by-step explanation:
180-67=113
180-75=105
540-90-113-105=232
232/2=116
180-116=64º
180-90=90º
can somebody plllllzzzzzzzzzzz help me with this-2 (x + 4 + 5y)
Answer:
-2x -8-10y
Step-by-step explanation:
-2 (x + 4 + 5y)
distribute
-2x -8-10y
A survey of U.S. adults who attend at least one music concert a year found that 67% say concert tickets are too expensive. You randomly select 12 adults who attend at least one music concert a year and ask them if concert tickets are too expensive. (Remember to make correction)
A)Find the probability that fewer than 4 people say that concert tickets are too expensive.
B)Find the probability that between 7 and 9 people, inclusive, say that concert tickets are too expensive.
C)Find the probability that at most 10 people say that concert tickets are too expensive.
Answer: b
Step-by-step explanation: step step
2/4+3/2+1/4 I need help
Answer:
2 1/4 or 2.25
Step-by-step explanation:
2/4 = 1/2
3/2 = 6/4
1/2 + 3/2 + 1/4
2/4 + 6/4 + 1/4
add
2 + 6 + 1
= 9
so
9/4, = 2 1/4
Plz mark as brainliest if correct!!!
Radius of sphere js 6 centimeters what is volume
the equation for volume of sphere is 4/3 x π x r^3
so just put the numbers in
4/3 x π x 6^3
= 288 π cm^3
Answer:
The volume of a sphere is given as
4/3 πr^3
There is only one variable, the radius, which we are given in the problem.
since the radius is 6 cm, we can plug that in to the formula
4/3 π6^3
Put this into the calculator, and we see that the volume is 904.8cm rounded to the nearest tenth.
Step-by-step explanation:
Hope it is helpful....
1) Classify each function as an exponential growth or an exponential decay. 1 point
f(x) =1/2
Answer:
f(3)=3/6=1/2
Step-by-step explanation:
hello
During tug of war, team A pulls to the East with 24N of force and team B pulls to the West with 32N of force. Which team will win and what is the net force?
Team B, 8N
Team B, 56N
Team A, 56N
Team A, 8N
Answer: Team B, 8N
Step-by-step explanation: I think it's team be because when doing the problem team a is 24 n to the right while Team B is 32 n to the left, and since they are pointing different directions you would subtract those and then get your answer. Since Team B has the larger force it will be the one to win.
Please answer my questions truthfully and not gibberish just for points
Answer:
51. / 13.7
54. / 17.85
29. / 5.15
Step-by-step explanation:
How old are you?
Answer:
The original cable was 5.15 m long.
51: $13.70
53: $16.50
54: $17.85
55: 4.4 miles
56: $49.35
Step-by-step explanation:
The answer to the first question (the one about the cables): So you would solve it by adding the lengths of the cable together.
Cut off piece: 1.65 m Remaining cable: 3.5 m
To find the original length, we need to add the cut off piece and the remaining cable together.
1.65+3.5= 5.15
The original cable was 5.15 m long.
Which of the following grid correctly graphs the points A (3,1) and C (1,3)
Answer:
its the top right
Step-by-step explanation:
x before y
A bag contains 10 marbles: 4 are green, 2 are red, and 4 are blue. Chris chooses a marble at random, and without putting it back, chooses another one at random. What is the probability that both marbles he chooses are blue? Write your answer as a fraction in simplest form.
Answer:
Step-by-step explanation:
P(BB)=(4/10)(3/9)
P(BB)=12/90
P(BB)=2/15
If x:y = 2:5, find the value of (-x+3y):(2x+y)
Answer:
let x=2t and y=5t
-x+3y = -2t+15t = 13t
2x+y = 4t+5t = 9t
So the ratio is 13t : 9t
So, the ratio is 13 : 9
Natalia can serve 120 volleyballs in 8 minutes and 330 volleyballs in 22 minutes. How many volleyballs can Natalia serve per minute if she is serving at a constant rate?
Answer:
15
Step-by-step explanation:
120+330=450
8+22=30
per minute->450÷30=15
Geometry Question Need Help. I will give brainliest.
Answer:
The correct answer is D. The points are rotated 180 degrees and scaled by a factor of 0.5. I assume that the 0.5 is the expected value in the text box labelled "D" (for dilation perhaps?)
pls helpppppppphhhhhh16 5/⁴×2-³×-0
The mean breaking strength of yarn used in manufacturing drapery material is required to be more than 100 psi. Past experience has indicated that the standard deviation of breaking strength is 2.4 psi. A random sample of 9 specimens is tested, and the average breaking strength is found to be 100.6 psi.
Required:
a. Should the fiber be judged acceptable? Use the P-value approach.
b. What is the probability of not rejecting the null hypothesis at α=0.05 if the fiber has a true mean breaking strength of 102 psi?
c. Find a 95% one-sided lower CI on the true mean breaking strength.
d. Use the CI found in part (d) to test the hypothesis.
e. What sample size is required to detect a true mean breaking strength of 101 with probability 0.95?
Answer:
H0: μ = 100 ; H1: μ > 100 ;
Test statistic = 0.75 ;
We fail to reject null ;
Kindly check explanation for the rest
Step-by-step explanation:
Given that :
H0: μ = 100
H1: μ > 100
Sample mean, x = 100.6 ; n = 9 ; sample Standard deviation, s = 2.4
Test statistic :
(x - μ) ÷ s/sqrt(n)
(100.6 - 100) ÷ 2.4 / sqrt(9)
0.6 ÷ 0.8 = 0.75
Probability of not rejecting the null :
P = P(Z > 0.75) = 0.22663
α = 0.05
Since, P > α ; we fail to reject the Null ; there is no sufficient evidence to accept the claim that mean strength is > 100 psi
μ + Zcritical*s/sqrt(n)
Zcritical at (1 - α) = 1.645
100 + 1.645*(2.4/3)
100 + 1.316 = 101.316
(x - μ) ÷ s/sqrt(n)
(101.316 - 102) ÷ 2.4 / sqrt(9)
-0.684 ÷ 0.8 = 0.75
= - 0.855
P(Z < - 0.855) = 0.1963 (Z probability calculator).
95% lower confidence interval :
x - error margin, E
E = Zcritical * s/sqrt(n)
E = 1.645 * 0.8 = 1.316
100.6 - 1.316 = 99.284
From part c :
Interval becomes ;
(99.284, 101.316) ; this interval contains the hypothesized mean value of 100. Hence we fail to reject the null.
Which of the following inequalities matches the graph? 100 point
Which of the following inequalities matches the graph?
Answer:Looking at the graph the y values does not change, it stays at zero
The shaded area are the numbers under O
This means the answer is y ≤ 0
The answer is y ≤ 0Hope it helps
-------☆ﾟ.･｡ﾟᵴɒƙυᴚᴀ_ƨȶäᴎ❀
Find the value of x. Round to the nearest tenth
Answer:
x=24.1
Step-by-step explanation:
soh cah toa
cos(24°)=22/x
cos(24)= 0.9135
0.9135=22/x
0.9135x=22
x=22/0.9135
x=24.1
Answer:
24.1
Step-by-step explanation:
By sine rule:
[tex] \frac{ x}{\sin 90 \degree} = \frac{22}{\sin (90 - 24)\degree} \\ \\ \frac{x}{1} = \frac{22}{ \sin 66 \degree} \\ \\ x =24.081998127 \\ \\ x \approx 24.1[/tex]
The sides of two cubes are in the ratio 2:1. What is the ratio of their volumes ?
Please mark as brainliest
Answer:
we know that, Volume of cube=a³
Let volume of 1st cube be 2x with side a and other be x with side A (according to given ratio)
Step-by-step explanation:
ATQ: 2x=a³ and, x=A³
a=³√2x and, A=x
we know that, surface area of cube is 6a²
Thus, surface area of 1st cube = 6(³√2x)²
= 6³√4x²
Surface area of 2nd cube=6(x)²=6x²
Ratio of S.A=(6³√4x²)÷(6x²)
Ratio of S.A=³√4:1
Please mark as brainliest
Have a great day, be safe and healthy
Thank u
XD
A. 11
B125
C. 275
D 450
Answer:
C
Step-by-step explanation:
duh
What is the value of x in simplest radical form?
Answer:
25, I believe
Step-by-step explanation:
Given a=7 and b=24,
c = 25
Answer:
25
Step-by-step explanation:
a² + b² = c², by Pythagoras
In this case 'x' is the 'c' for hypotenuse length
7² + 24² = x²
49 + 576 = x²
625 = x²
√625 = x
25 = x
Determine the value of x.
1) 109°
2) 71°
3) 142°
4) 35.5°
You open an account at Bertha’s Banking Branch. You put $50 in the bank and your account earns $4 per week in interest. How many weeks will it take for the balance in your account to be $90?
Answer:
10
Step-by-step explanation:
50+4x=90
4x=90-50
4x=40
x=40/4
x=10
At 5am the temperature was -13f degrees. At 5pm on the same day the temperature was 39f. Which expression represents the increase in temperature?
A 39- 13
B -13 - 19
C -13 - 39
D 39 - ( -13)
Answer:
D
Step-by-step explanation:
Process of elimination, -13 is negative so we eliminate A, There is no 19 in the Math problem so we eliminate B, -13 - 39 would lead to a negative number but since were increasing from temperate it has to be positive so it's not C and answer D would lead to a positive number!
In New Jersey, a survey of students in Mrs. Camp's 10th grade class reported that 45.8% said they had a pet. There are 28 students in her class, and the average number of students in 10th grade classes in New Jersey is 28. If there are 1500 10th grade classes in New Jersey, what is the best estimate of the the number of 10th grade students in New Jersey who have a pet? Round your answer to the nearest hundred.
9514 1404 393
Answer:
19,200
Step-by-step explanation:
The number of students with a pet is estimated to be ...
(0.458)(1500)(28) = 19,236
About 19,200 10th-grade students in New Jersey have a pet.
what is 30% of $40 is
Answer:
$12
Step-by-step explanation:
Answer:
$12
Step-by-step explanation:
30/100 = X/40
X/40 = 30/100
X*40/40 = 30*40/100
X = 1200/100
X = 12
(311) and (33)
What is the distance between (3
Answer:
278
Step-by-step explanation:
Always subtract if u are calculating the distance
What is 8.23 divided by 103?
Answer:
0.08
Step-by-step explanation:
If u do the math or put it in the calculator u should get 0.08
Simplify the expression:
7(1 + 7x) =
Answer:
7 x 8x
Step-by-step explanation:
Transformations,, I have no clue what to do :(
Answer: 17
Step-by-step explanation:56%