Answer:
Step-by-step explanation:
What i would do is turn the first one into an improper fraction
7/5 x 1/4
it's easier to multiply this way
see if you can simplify any of the terms first
7 1
5 4
none of the numbers can be broken down further so we just multiply straight across
7 x 1 is 7
5 times 4 is 20
so the answer would be 7/20
5. You are buying orange juice for $3.50 per container and have a gift card worth $5. The function f(x) = 3.50x-5 represents your total cost f(x) if you buy x containers of orange juice and use the gift card. How much would you pay for 4 containers of orange juice?
Answer:
$9
Step-by-step explanation:
If you do 3.5*4 then you get 14. You then use the $5 gift card so you subtract 5 from 14 and get 9
using the equation, that would be f(x) = (3.5*4)-5. Using PEMDAS, you would do the parenthesis first so it would be f(x) = 14-5 which equals 9
PLEASE HELP ASAP
Factor 3x+6y-9z
Please help brainliest giveaway
Answer:
Hey, just here so he can get brainliest, have a nice day!
Step-by-step explanation:
Answer:
o
Step-by-step explanation:
ANSWER QUICK FOR BRAINLIEST!!
please i need this asap:))
Answer:4
Step-by-step explanation: please just trust me!
What does it mean for a system of equations to have "no" solution?????
Answer:
when a system of equation has no solution it means that both X's are 0
If it is on a graph then two lines would be parallel to each other
Step-by-step explanation:
for example
-6x +7y= -6x+12y
automatically you would add six to the negative six and you would not have any X's. so it has no solution
-6x +7y= -6x+12y
+6 +6
-------------------
7y=12y
Hopefully you understand what no solution is
have a great day
A system of equations having no solution implies that the equations in the system cannot be solved
What is a system of equation?A system of equation is a collection of at least two equations i.e. two or more equations
A system of equation can have any of the following number of solutions
No solutionOne solutionMultiple solutionsInfinite many solutionsWhen a system of equations have no solution then the equations in the system cannot be solved
Read more about system of equations at:
https://brainly.com/question/14323743
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Ina certain county weights of women are normally distributed with a mean of 138 lb and a standard deviation of 15 lb. What percentage of women in that country weigh more than 120 lb
Answer:
88.493%
Step-by-step explanation:
We solve this question using z score formula.
Z score = x - μ/σ
where
x is the raw score = 120lb
μ is the population mean = 138lb
σ is the population standard deviation = 15lb
Hence,
z = 120 - 138/15
= -1.2
Probability value from Z-Table:
P(x<120) = 0.11507
P(x>120) = 1 - P(x<120)
1 - 0.11507
= 0.88493
Converting to percentage
= 0.88493 × 100
= 88.493%
The percentage of women in that country weigh more than 120 lb is 88.493%
Colton scored a 70 on his first history test of the term and a 91 on the second history test. Coltons score increased by what percent?
Answer:
30 Percent
Step-by-step explanation:
Use the percent change formula.
You purchased concentrated cleaner that must be diluted before use. Container a is the cleaner, which is 20% solution. Container b is pure water. You are mixing together the contents of container a and container b to produce 40 gallons of 9% solution. How many gallons from each container are needed to create the 40 gallons of 9% cleaning solution?
Answer:
18 gallons from container [tex]a[/tex] and 22 gallons from the container [tex]b[/tex] to be mixed to get the required mixture.
Step-by-step explanation:
Given that the container [tex]a[/tex] has 20% concentrated cleaner
and container [tex]b[/tex] has pure water which has 0% cleaner.
Let x gallons from container a and y gallons from the container b are mixed to get a 9% concentrated solution.
So,
[tex]9\%\; \text{of}\; (x+y) = (20\% \; \text{of}\; x )+(0\% \; \text{of}\; y)\cdots(i)[/tex]
As the total amount of the final solution= 40 gallons
So, [tex]x+y=40\cdots(ii)[/tex]
Using the value of equation (ii) in equation (i), we have
9% of 40 = 20% of x
[tex]\Rightarrow 0.09\times 40=0.2 \times x[/tex]
[tex]\Rightarrow x=\frac{0.09\times 40}{0.2}[/tex]
[tex]\Rightarrow x=18[/tex] gallons.
From equation (ii),
18+y=40
[tex]\Rightarrow y=40-18=22[/tex] gallons.
Hence, 18 gallons from container [tex]a[/tex] and 22 gallons from the container [tex]b[/tex] to be mixed to get the required mixture.
the slope is 3/4 and they y-intercept is (0, 4
Answer:
eqn of line
3x-4y=-16
Step-by-step explanation:
Answer:
y = [tex]\frac{3}{4}[/tex] x + 4
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Here m = [tex]\frac{3}{4}[/tex] and given (0, 4) ⇒ c = 4 , then
y = [tex]\frac{3}{4}[/tex] x + 4 ← equation of line
Quinton typically walks 28 yards south on Pine Street and 45 yards east on Maple Avenue in order to get to school. How much shorter would his walk be if he took the shortcut shown below? (50PTS)
Answer:
B- 20 yards
Step-by-step explanation:
First you have to find the hypotenuse by finding the square root of 28 squares plus 45 squared which equals 53 yards. Next you have to add the two legs of the right triangle so we can subtract the shortcut length from that. So you have to do 28 plus 45 which equals 73 yards. 73 minus 53 is 20. So the answer is 20 yards.
Answer:
20
you have to find the hypotenuse by finding the square root of 28 squares plus 45 squared which equals 53 yards. you have to add the two legs of the right triangle so we can subtract the shortcut length from that. So you have to do 28 plus 45 which equals 73 yards. 73 minus 53 is 20. So the answer is 20 yards.
The diagram above represents a biochemical process that occurs in a cell. The purpose of this process is to synthesize ?
Messenger RNA
Carbohydrates
Deoxyribonucleic Acids
Proteins
Answer:
Proteins
Step-by-step explanation:
I took the test and I got it right.
Answer:
proteins
Step-by-step explanation:
can you help i need to finish this by today!
Question... The leader of a city crime watch team sends out a survey to her neighbors asking them to vote on the best time to patrol the city to watch for criminal acts. Describe how the design of the survey leads to bias. (4 points)
Options...
A nonresponse error was made in this design. This type of sampling only represents the city and not the entire county population.
A nonresponse error was made in this design. This type of sampling only represents the neighborhood with the worst crime and not the entire city population.
A convenience sample error was made in this design. This type of sampling only represents the neighborhood with the least crime and not the entire city population.
A convenience sample error was made in this design. This type of sampling is only representative of one neighborhood and not the entire city population.
There are no potential areas of bias.
Answer:
(c) A convenience sample error was made in this design. This type of sampling is only representative of one neighborhood and not the entire city population.
if 8 7/18 - ( 1 5/6 + y) = 3 4/15 + 2 3/45
what is y?
At a baseball game, the stadium gave T-shirts to the first 100 fans to arrive. Each T-shirt cost $15.00. How much did the stadium pay for the T-shirts it gave away?
What is negative 6/11 plus negative 3/11?
Answer:
-0.81818181818
Step-by-step explanation:
Answer:
-9/11
Step-by-step explanation:
Which number line shows point A plotted at -7?
Answer:
The third number line.
Hope this helps and have a great day!
And please mark me brainliest if you can :)
PLEASEEEER HELPPP!!
If possible how would you prove that the given triangles congruent
Answer:
AAS
Step-by-step explanation:
Jimmy has 10 apple’s and gets rid of 2 how many are left
Answer:
8
Step-by-step explanation:
Answer:
8 apples
Step-by-step explanation:
By saying gets rid of, it means subtraction
So, the equation would be
10-2
=8
Hope that clarified your answer!
whats 7/13 plus -2 as a fraction?
Answer:
-19/13
Step-by-step explanation:
[tex] \frac{7}{13} - 2 = \frac{7}{13 } - \frac{26}{13} \\ = - \frac{19}{13} [/tex]
Answer:
-19/3
Step-by-step explanation:
Rewrite the equation to 7/13-2 and get -1 and 6/13 which in improper fraction format is -19/3.
I need to rearrange the variables to solve for pressure, P, as a function of volume and temperature, V and T. Write out your work on paper and submit a picture.
Answer:
P = (8T) / V
Step-by-step explanation:
P*V=8*T*P/P multiply both sides by P
P*V=8*T because P/P=1
P = 8T/V divide both sides by V
Find the value of the y-intercept of the line whose equation is 2x + 3y = 6.
Answer:
To find the x-intercept, substitute in
0
for
y
and solve for
x
. To find the y-intercept, substitute in
0
for
x
and solve for
y
.
x-intercept(s):
(
3
,
0
)
y-intercept(s):
(
0
,
2
)
Step-by-step explanation:
At an angle of elevation 610
captain on a ship noticed a person on the top of a cliff waiving towards the ship. To see him better, the captain moved his ship 92m closer to the cliff. The angle of elevation at that
moment was 690. Determine the height of the cliff to the nearest tenth of a meter.
Answer:
The height of the cliff CD is approximately 539.76 m
Step-by-step explanation:
The given parameters are;
The first angle of elevation with which the captain sees the person on the cliff = 61°
The second angle of elevation with which the captain sees the person on the cliff after moving 92 m closer to the cliff = 69°
The angle made by the adjacent supplementary angle to the second angle of elevation = 180° - 69° = 111°
∴ Whereby, the rays from the first and second angle of elevation and the distance the ship moves closer to the cliff forms an imaginary triangle, we have;
The angle in the imaginary triangle subtended by the distance the ship moves closer to the cliff = 180° - 111° - 61° = 8°
By sine rule, we have;
AB/(sin(a)) = BC/(sin(c))
Which gives;
92/(sin(8°)) = BC/(sin(61°))
BC = (sin(61°)) × 92/(sin(8°)) ≈ 578.165 m
BC ≈ 578.165 m
The height CD = BC × sin(69°)
∴ The height of the cliff CD = 578.165 m × sin(69°) ≈ 539.76 m.
The height of the cliff CD ≈ 539.76 m.
Gribbles are small, pale white, marine worms that bore through wood. While sometimes considered a pest since they can wreck wooden docks and piers, they are now being studied to determine whether the enzyme they secrete will allow us to turn inedible wood and plant waste into biofuel.1 A sample of 50 gribbles finds an average length of 3.1 mm with a standard deviation of 0.72. Give a best estimate for the length of gribbles, a margin of error for this estimate (with 99% confidence), and a 99% confidence interval. Round your answer for the point estimate to one decimal place, and your answers for the margin of error and the confidence interval to two decimal places. point estimate = Enter your answer; point estimate margin of error = Enter your answer; margin of error The 99% confidence interval is Enter your answer; The 99%confidence interval, value 1 to Enter your answer; The 99%confidence interval, value 2
Answer:
a) The Margin of Error = 0.26
b) The 99% Confidence Interval = ( 2.84, 3.36)
Step-by-step explanation:
a) Margin of Error
The formula for Margin of Error =
z × Standard deviation/√n
From the above question
The z score for 99% confidence interval = 2.576
Standard deviation = 0.72
n = Random number of samples = 50
Margin of Error =
2.576 × 0.72/√50
= 1.85472 /√(50)
= 0.2622970178
Approximately to 2 decimal places = 0.26
b) 99% Confidence Interval
= Mean ± Margin of Error
Mean = 3.1mm
Confidence Interval = 3.1 ± 0.26
3.1 ± 0.26
= 2.84
3.1 + 0.26
= 3.36
The 99% Confidence Interval = ( 2.84, 3.36)
Round 53.121 to the nearest half.
if you have a question on anything just ask
Answer:
how are you
Step-by-step explanation:
Using the order of operations, what should be done first to evaluate (-4) +6-(-3-4) (2) - 5?
VX
© Subtract 5 from 2.
Divide 6 by-3.
0 Add-3 and 4
O Multiply 4 and 2
Answer:
The answer is Add -3 and 4 should be done first
Pls helppp :))
Solve for x by factoring
X^2+4x-21=0
There are multiple answers
Answer:
[tex]x=3,-7[/tex]
Step-by-step explanation:
We can solve for x by using [tex]\frac{-b\pm\sqrt{b^{2} -4ac} }{2a}[/tex]
By applying this on the quadratic equation, we get:
[tex]x=\frac{-4\pm\sqrt{4^{2}+84} }{2}[/tex]
Which simplifies to:
[tex]x=\frac{-4\pm10}{2}[/tex]
[tex]\therefore x=3,-7[/tex]
What is the answer to this equation
1) 4(x + 5) = 40
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[tex]4(x + 5) = 40[/tex]
Divide sides by 4
[tex] \frac{4}{4} \times (x + 5) = \frac{40}{4} \\ [/tex]
[tex]x + 5 = 10[/tex]
Subtract sides 5
[tex]x + 5 - 5 = 10 - 5[/tex]
[tex]x = 5[/tex]
♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
CHECK :
[tex]4(5 + 5) = 40[/tex]
[tex]4 \times 10 = 40[/tex]
[tex]40 = 40[/tex]
Thus the solution is correct.
♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
Done...
Evaluate the following expression. 1 + tan^2(pi/6)
A. 2
B. 4
C. 11/3
An explanation of the answer will be awarded extra points
Answer:
B
Step-by-step explanation:
I Can't explain it,I'm sorry
