Answers
Answer:
A,B, D
Step-by-step explanation: I just took that test and i got it right
Related Questions
Solve the following system of equations using the elimination method.
5x + y = 9
Answers
Answer:
x= -1/5y+9/5
Step-by-step explanation:
5x+y=9
Step 1
First you need to add -y to both sides, basically subtracting y
5x+y-y= 9-y
Step 2
Divide both sides by 5, or multiply by 1/5. You want to do this because to cancel out 5, so you multiply the reciprocal, or divide the constant.
1/5*5x=-y+9/5
Then, you will get the answer
Hope this helps, sorry if it is wrong, I am just 4th grade :(
But I am sure this is correct :)
A politician claims that 20% of the millions of votes cast for his opponent are fraudulent. To test this claim, an investigator collects a random sample of 90 ballots and contacts the voters whose names appear on the ballots to determine if each ballot is in fact fraudulent. Use a normal approximation to find the probability that less than 10 of the selected ballots turn out to be fraudulent, assuming the politician's claim is correct.
Answers
Answer:
"0.0125" is the right solution.
Step-by-step explanation:
The given values are:
Random sample,
n = 90
Claims,
p = 20%
or,
= 0.20
By using normal approximation, we get
⇒ [tex]\mu = np[/tex]
On substituting the values, we get
⇒ [tex]=90\times 0.20[/tex]
⇒ [tex]=18[/tex]
Now,
The standard deviation will be:
⇒ [tex]\sigma=\sqrt{np(1-p)}[/tex]
On putting the above given values, we get
⇒ [tex]=\sqrt{90\times 0.20\times (1-0.20)}[/tex]
⇒ [tex]=\sqrt{18\times 0.8}[/tex]
⇒ [tex]=\sqrt{14.4}[/tex]
⇒ [tex]=3.7947[/tex]
hence,
By using the continuity correction or the z-table, we get
⇒ [tex]P(x < 10) = P(x < 9.5)[/tex]
⇒ [tex]P(x < 10) = P(\frac{x-\mu}{\sigma} -\frac{9.5-18}{3.7947} )[/tex]
⇒ [tex]P(x < 10) = P(Z < -2.24)[/tex]
From table,
⇒ [tex]P(x < 10) = 0.0125[/tex]
Which inequality represents all possible solutions of -6n < -12
Answers
Answer:
The only solutions would be that the numbers HAVE to be greater than 2
Step-by-step explanation:
-6n < -12
-n < -2
n > 2
Naomi pays $1.50 each time she rides the city bus. She has already ridden the bus 18 times so far this year. The expression 1.50b+1.50(18) represents the amount of money she expects to spend on bus rides for the entire year.
What part of the expression represents the amount of money Naomi expects to spend on bus rides between now and the end of the year?
A
b
B
1.50
C
1.50b
D
1.50(18)
Answers
Answer:
D, 1.50(18)
Step-by-step explanation:
just guessing lol
find the area of this parallelogram with the measurements 5.2cm and 8.4cm
Answers
Answer:
43cm square
Step-by-step explanation:
A= bh
A=8.4cm x 5.2cm
A=43.68cmsqr
25 PTS PLEASE HELP QUICK
(not related to the question but please add thx i want friends)
OK THX THE QUESTION IS BELOW
Answers
You do rise over run
Answer:
-3
Step-by-step explanation:
just plug in the points on the line into y2-y1/x2-x1
Malik estimated that 150 people would attend a concert. The exact attendance was 215 What is his percent error, to the nearest percent?
Answers
Answer:
I think around 43.3%
Step-by-step explanation:
215-150
150
65
150 x 100
=43.3333333333333
Answer:
I think around 43.3%
Step-by-step explanation:
Solve for x using the picture above.
Answers
So, 4x - 2= 3x + 18
4x - 3x = 18 + 2
x = 20
So, the value of x is 20.
What is the value of the expression shown? 10 - 16:2
[tex]10 - 16 \div 2[/tex]
Answers
10 - 8
Solve
2
Find the equation of the straight line which passes through (3,5) and makes y-inte
r-intercept.
Answers
Answer:
Please restate your question.
It needs the y-intercept to be decipherable.
Step-by-step explanation:
ben want to make pizza with salami He is going to make 3 pizza so he chops the salami into thirds
a) what fraction of the salami will go on the first pizza?
b)to make the first pizza he takes the first piece of salami and chops it into 15 equal slices. if he cuts all three parts the same way how many slices will there be in total
c)what fraction of the salmi goes on the pizza
Answers
Answer:
a) 1/3
b)45
Step-by-step explanation:
Answer:
a) 1/3
b)45
have a good day/night
PLS HELP ME ASAP! FOR 15 POINTS AND DONT GIVE ME A LINK
Select the correct answer.
What is the solution to this system of equations?
x − 2y = 15
2x + 4y = -18
A. x = 1, y = -6
B. x = 1, y = -7
C. x = 3, y = -6
D. x = 3, y = -7
Answers
Answer:
C. x = 3, y = -6 is the answer.
Step-by-step explanation:
1. Isolate x for x = 2y = 15 -> x = 15 + 2y
2. Substitute x = 15 + 2y -> [2 (15 + 2y) + 4y = -18]
3. Simplify -> [30 + 8y = -18)
4. Isolate y for 30 + 8y = -18 -> y = -6
5. For x = 15 + 2y, substitute y = -6 -> x = 15 + 2(-6)
So, x = 3 and y = -6 are the solutions to this system of equations.
Hope this helps! :)
And also you should use Symbolab, it gives all the answers and steps
help asap pls need help by 1230 pt thanks
Answers
Answer:
acute, isosceles
Step-by-step explanation:
Acute: all angles are less than 90°
Isosceles: 2 sides are the same length, the other is not
Have a great day! :D
Johanna can jog 24 feet in 5 seconds. If she jogs at the same rate, how many feet can she jog in 8 seconds? PLSS help!
Answers
solve the inequality please
Answers
Answer:
The solution is 4 >/= -21
4 is greater than or equal to negative 21
Step-by-step explanation:
7x + 4 >/= 7(x - 3)
We'll start by distributing the y7 to the items in parentheses
7x + 4 >/= 7x - 21
Subtract 7x from both sides
4 >/= -21
What is the measure of angle 1?
Answers
help me it’s more but i can’t post it
Answers
Answer:
( 2 x + 1 ) ( 3 x + 2)
Step-by-step explanation:
srry, i could only do the first one-
what is 3 /8 times 4/7 in simplest form
Answers
Answer:
3/14
Step-by-step explanation:
i will give Brainiest if you are right
Answers
Answer:
b) [tex] 572.7 \: ft^3 [/tex]
Step-by-step explanation:
Volume of water needed to fill the fish tank
= 11.5* 8.3 * 6
[tex] = 572.7 \: ft^3 [/tex]
It is advertised that the average braking distance for a small car traveling at 65 miles per hour equals 120 feet. A transportation researcher wants to determine if the statement made in the advertisement is false. She randomly test drives 36 small cars at 65 miles per hour and records the braking distance. The sample average braking distance is computed as 114 feet. Assume that the population standard deviation is 22 feet. Use Table 1. State the null and the alternative hypotheses for the test. H_0:mu = 120: H_A: mu notequalto 120 H_0:mu 2 greaterthanorequalto 120: H_A mu < 120 H_0: mu lessthanorequalto 120: H_A: mu > 120 Calculate the value of the test statistic and the p-value. {Negative values should be indicated by a minus sign. Round "Test statistic" to 2 decimal places 3nd "p-value" to 4 decimal places.} The p-value is: p-value < 0.01 0.01 lessthanorequalto p-value < 0.025 0.025 lessthanorequalto p-value < 0.05 0.05 lessthanorequalto p-value < 0/.10 p-value greaterthanorequalto 0.10 c. Use alpha = 0.01 to determine if the average breaking distance differs from 120 feet. Repeat the test with the critical value approach. (Negative values should be indicated by a minus sign. Round your answers to 3 decimal places.)
Answers
Answer:
H0: mu = 120 , Ha: : mu not equal to 120
The p-value is greater than or equal to 0.10
z= -1.636
Since the calculated value of z does not fall in the critical region H0 is not rejected.
Step-by-step explanation:
State the null and alternate hypothesis
H0: mu = 120
average braking distance for a small car traveling at 65 miles per hour equals 120 feet.
against the claim
Ha: : mu not equal to 120
average braking distance for a small car traveling at 65 miles per hour does not equal 120 feet.
The p-value equals 0.101764 which is greater than 0.01 and thus supports H0.
The p-value is greater than or equal to 0.10
The test statistic z is applied
Here
Sample Mean x~ = 114
Population mean μ =120
Sample size n= 36
Population SD =σ= 22
Z= u- μ/σ√n
Z= 114- 120/ 22/ √36
z= -1.636
This is a two tailed test and the critical region for two tailed test at alpha = 0.01 is z ∝/2= ± 2.58
Since the calculated value of z does not fall in the critical region H0 is not rejected.
I’m confused can someone help
Answers
9514 1404 393
Answer:
Landon's purchase: p +5g = 17.55Lesley's purchase: 4p +2g = 13.50pretzel: $1.80granola bar: $3.15Step-by-step explanation:
The equation representing either purchase will multiply the number of items by their cost, for each item, and show the total as the cost of the purchase. Here, p is defined as the cost of a pretzel; g is defined as the cost of a granola bar.
Landon's purchase
1 pretzel + 5 bars will cost 1p +5g
That cost is 17.55, so the equation is ...
p +5g = 17.55
Lesley's purchase
4 pretzels + 2 gars will cost 4p +2g
That cost is 13.50, so the equation is ...
4p +2g = 13.50
__
To solve, you can subtract the second equation from 4 times the first:
4(p +5g) -(4p +2g) = 4(17.55) -(13.50)
18g = 56.70 . . . . collect terms
g = 3.15 . . . . . . . . divide by 18
Then the cost of a pretzel can be found using the first equation.
p + 5(3.15) = 17.55
p = 1.80
The cost of a pretzel is $1.80; the cost of a granola bar is $3.15.
Use the following number line to determine if the expressions are true or false.
A 0 B
<-------------l------------------l------------------l------------------l------------------l------------------l---------------->
true false
a > b [] []
lal > lbl [] []
a > lbl [] []
(the lines around the B and the A matter {for some reason}]
PLEASE HELP ME
Answers
Answer:
IT's a < b True /a/ =0 True /a/ < /b/ True
Step-by-step explanation:
PLEASEEEEEEEEEEEEE HELPPPPPPPPPPPPPPP AM GOING TO FAIL
Answers
Answer:
2b + 10
Step-by-step explanation:
Which expressions listed on the left are equivalent to √36a^8/225a^2? Check all that apply. (Assume that a ≠ 0.)
Answers
Answer: ABE
Step-by-step explanation:
Answer: a b e
Step-by-step explanation:
3. Eggs are shipped in large boxes that contain 20 egg cartons. Each egg carton holds 12 eggs. How many eggs are in 5 large boxes?
Answers
Answer: Standard egg cartons have room for 10 or 12 eggs, but they can come in a variety of sizes, holding from three to 24 eggs.
Step-by-step explanation:
Answer:
20×12(12×5)
do this simplification
yo can get answer
There were 8 pizzas at the pizza party for two families. The Houston family ate 2 2/3 pizzas.
The Ozark family ate 2 5/6 pizzas.
What whole number is the closest estimate of how many pizza was left
Answers
Answer:2 pizzas
Step-by-step explanation:
2 2/3 and 2 5/6 can both be rounded to 3. Double that and you get 6. Since there were 8 pizzas originally,subtract 6 from 8 to get 2 remaining pizzas.
Answer:
2 pizzas
Step-by-step explanation:
I need help badly and don't send no links or you will be reported
Answers
Answer: - 3/2
Step-by-step explanation:
Use this formula to find the slope for any two given points.
(4, 3) and (6, 0)
↓ ↓ ↓ ↓
x1 y1 x2 y2
y2 - y1 0 - 3
--------- = ---------- = -3/2
x2 - x1 6 - 4
Hope this helped! :)
Jason ran 2.8 miles yesterday and 3.4 miles today making his two day average 3.1 miles. How many kilometers does he average? Round your answer to the nearest hundredth.
a. 4.991 km
b. 4.99 km
c. 9.98 km
d. 4.51
Answers
It’s C, 9.98 km
Which describes how the figure below was transformed?
Answers
Answer: Rotation
Step-by-step explanation: This is a rotation because the figure is rotated 90°. This is not a translation because it isn't moved to a different position. This is not a reflection because it isn't mirrored. This is not a dilation because the size didn't change. Therefor, it is a Rotation, because this figure was rotated 90°
Examples are below if you still don't quite understand.
6. What is the first step in financial planning?
Answers
Answer:
determining your current financial situation.
Step-by-step explanation:
Answer:
determining your current financial situation
Step-by-step explanation: