Answer:
12
Step-by-step explanation:
20/5 = 4
4 x 3= 12
3/5 of 20 is 12.
This is because 3/5*20/1=60/5 which reduces to 12.
4x-4y+4z=8
9x+3y+z=6
16x+4y+z=2
9514 1404 393
Answer:
(x, y, z) = (-1, 3, 6)
Step-by-step explanation:
The augmented matrix for the system is ...
[tex]\left[\begin{array}{ccc|c}4&-4&4&8\\9&3&1&6\\16&4&1&2\end{array}\right][/tex]
Your graphing or scientific calculator can tell you the solution to this system is ...
(x, y, z) = (-1, 3, 6)
__
If you want to solve this by hand, it can work well to divide the first equation by 4 to get ...
x -y +z = 2
This can be subtracted from the other two equations to eliminate z.
(9x +3y +z) -(x -y +z) = (6) -(2) ⇒ 8x +4y = 4
(16x +4y +z) -(x -y +z) = (2) -(2) ⇒ 15x +5y = 0
These two equations can be reduced to standard form:
2x +y = 13x +y = 0Subtracting the first equation from the second, we have ...
(3x +y) -(2x +y) = (0) -(1) ⇒ x = -1
Substituting into the first gives y:
2(-1) +y = 1
y = 3 . . . . . . . add 2
Then we can find z from the reduced first equation above:
z = 2 -x +y = 2 -(-1) +3 = 6
Then the solution is (x, y, z) = (-1, 3, 6).
[tex]Y= x + 15[/tex]
On a recent survey, 60% of those surveyed indicated that they preferred taking a trip to the beach over a trip to the mountains. If 810 people preferred a trip to the mountains, how many preferred a trip to the beach?
Question 2 options:
1) 810
2) 1,215
3) 1,350
4) 2,025
Answer:
answer is 1350
Step-by-step explanation:
I have seen this question before.
Multiple-choice questions
Tick the correct answer to each of the questions below.
1 When selling a product to your client it is important to:
a make sure it is the most expensive
b give good advice on how to use it
c make sure the sale is quick
d put it in an attractive bag
2 Always having retail products in stock is one way of:
a spending a lot of money on stock
b making more money
c leaving the salon vulnerable to theft
d keeping clients happy
3 Communication occurs between people through:
a body language and speech
b talking to the client in consultation
c verbal, non-verbal and written forms
d verbal and written forms
Answer:
1. B
2.D
3.D
Don't hold me to my answers, they are just the best answers and i have experience with these things. I hope this helps
Answer:
1=b
2=b
3=c
Step-by-step explanation:
I HOPE THIS HELPED
IF WRONG IM SORRY HAVE A WONDERFUL WEEK:)
Which of the following is not the equation of the graphed line
idek Step-by-step explanation:
Oh my god please help.
Answer:
its A
Step-by-step explanation:
Answer:
A
Step-by-step explanation:A would be the correct answer because for 1 cup there is 1 1/2 teaspoons. For b one cup of water would have 1/4 a teaspoon of powder and same for c so the ANSWER IS A!!!
Pls answer ASAP I will give brainliest answer
Answer:
34.328125
Step-by-step explanation:
Which direction will the box move in the diagram below?
A.It will move to the left.
B.It will move to the right.
C.It will not move.
D.It will move up.
Answer:
B.it will move to the right.
Explanation:
We have 5 newtons of force pushing to the right, and 3 newtons of force pushing to the left. We can place the positive direction on the right hand side and the negative direction on the left.
This means we can think of "3 newtons of force to the left" as the integer -3
That way we can then add 5 to -3 getting 5+(-3) = 2. The result is positive, meaning the net force is pushing to the right. Specifically, 2 newtons of force are pushing to the right.
It's like saying there are 5 people pushing to the right and 3 pushing to the left. From each side, 3 people will pair up and they'll cancel each other out. The 2 extra people pushing right will ultimately win out.
Sarah wants to raise her math grade to a 98 to improve her chances of winning a math scholarship. Her math average for the last marking period was an 85. By what percentage of points must Sarah raise her grade to earn a 98? No, the answer is not 13%.
Question 1 options:
approximately 15%
approximately 14%
approximately 13%
approximately 12%
Sun estimated the quotient of -23.514 and -3.98 by rounding each to the nearest integer. Which equation shows the correct estimation?
-23.514÷-3.98
O -24÷-4=6
O -24÷4=-6
O 24÷3=8
O 24÷-3=-8
Answer:
A
Step-by-step explanation:
because if you are rounding to the nearest integer that means that -23.514 would be -24 and -3.98 would be -4 and negative divided by a negative is a positive
Answer:
A
Step-by-step explanation:
Cumulative Exam 2021
Merry Christmas <3
P.S. Have a good winter break :)
84.5 divided by 6261.45
Answer:
74.1
Step-by-step explanation:
What is the value of x? (trignonometry) WILL give branliest if its delivered in time
Answer:
x+x+64=180
2x+64=180
2x=116
x=58
HELPPP OMG help help help help i need this soon pls (you’d be a lifesaver if you did this)
The replica of the Eiffel tower at King’s Island amusement park is 1/3 the height of the original Eiffel tower in Paris, France. The height of the replica measures 350 feet. What is the height of the original Eiffel tower in Paris, France?
Answer:
The replica of the Eiffel tower at King’s Island amusement park is 1/3 the height of the original Eiffel tower in Paris, France. The height of the replica measures 350 feet. What is the height of the original Eiffel tower in Paris, France?
Step-by-step explanation:
A submarine's descent was a change in depth of -6 feet per minute. At this
rate, how much time would it take the submarine to reach a level of 750 feet
below sea level?
i need help pls help me
Answer:
yes
Step-by-step explanation:
Answer:
18
Step-by-step explanation:
you have to multiply 2/3 by 27 km
the height of 12 students
are as below &
159, 148, 138, 150, 165, 166, 145, 152 155 160 147, 151
the mean, the median and the mode
Answer:
Mean = 153
Median = 151.5
Mode = 159, 148, 138, 150, 165, 166, 145, 152, 155, 160, 147,
Step-by-step explanation:
Mean - add all numbers up (1820) then divide by 12
Median - put numbers in order, add two middle numbers and divide by 2
Mode - each number only came up once so they are all the mode
Ted has a part-time job.
He is paid £7.90 per hour.
Last week he worked for 15/2 hours.
Work out Ted's total pay for last week.
Answer:
The answer is 122.45
Step-by-step explanation:
So basically we know that he worked 15 and 1/2 hours
He gets paid £7.90 for every hour he works
7.90 × 15 = 118.5
Then you do half of £7.90 which is £3.95 because he worked 1/2 hours half of 60 minutes is 30 minutes that why you half £7.90.
You add 118.5 + 3.95 = £122.45
and that your answer
can somebody pls help me solve this question?
Answer: Im pretty sure its G
Step-by-step explanation:
Which pair of numbers is relatively prime?
A 7 and 21
B 4 and 15
C 6 and 9
D 9 and 27
if w is the cube root of unity
(x-wy+w^2z)/(y+wz+w^2z)
only correct ans allowed wrong ans will be reported
Answer:
are you sure
Step-by-step explanation:
bro i am trying to answer your question
if a number, n, divided by 8 equals 2.5, what is n?
Answer:
n is 20
Step-by-step explanation:
If n/8=2.5, then you can just do 8*2.5 to find n. 2.5*8=20
Answer:
n=20 because if you multiple 2.5 and 8 you will get 20 so if you divide 20 and 8 then you get 2.5
Please answer this HELLLPPPP!!!!!
Answer:
x = 10
Step-by-step explanation:
Diagonals of a rhombus bisect each other at a 90° angle, but most importantly (for this problem), they bisect the opposite angles of the rhombus equally.
This means that the two angles, given by the expressions (6x + 12) and (8x - 8), are equal to each other.
Set them equal to each other in an equation and solve for x.
6x + 12 = 8x - 8Subtract 6x from both sides.
12 = 2x - 8Add 8 to both sides.
20 = 2xDivide both sides by 2.
x = 10The value of 10 for x will make the given parallelogram a rhombus.
Can someone help me
With this ? Thanks so much
Answer:
The 2nd one should be right
Step-by-step explanation:
prove me wrong
You are running a concession stand at a basketball game. You are selling hot dogs and
sodas.Each hot dog costs $1.50 and each soda costs $ 0.50. At the end of the night, you made a total of
$78.50. You sold a total of 87 hot dogs and sodas combined. You musſt report the number of hot dogs
sold and the number of sodas sold. How many hot dogs were sold and how many sodas were sold?
Answer: 52
Step-by-step explanation: Friend me and yes that is right!
the following two ratios form a proportion 4/5 and 8/10. true or false (I need quick answers pls)
Answer:
this is true because you can divide 8/10 by 2 and you get the same number 2/5 and sorry for my english
given the segments as shown for what value of x is the figure a rectangle
A. 5.
B. 7
C. 3
D. 9
Answer:
[tex]x = 7[/tex]
Step-by-step explanation:
Required
Determine the value of x
The diagonals of a rectangle are equal.
So:
[tex]x + 5 + 2x -2 = 3x -9+4x - 16[/tex]
[tex]x + 2x + 5 - 2 = 3x +4x - 9 - 16[/tex]
[tex]3x + 3 = 7x -25[/tex]
Collect Like terms
[tex]3x-7x=-25-3[/tex]
[tex]-4x=-28[/tex]
[tex]x = \frac{-28}{-4}[/tex]
[tex]x = 7[/tex]
Please help ASAP it’s due tomorrow
Answer:
x<13
Step-by-step explanation:
Solve each inequality using addition and subtraction. Then graph each solution
set on a number line.
-7x + 5 + 8x >3,
Answer:
wish i could herlp sorry have a great day
Step-by-step explanation:
Answer:
x > -2
Step-by-step explanation:
A=
B=
Blank 1:
Blank2:
Answer:
a=3,b=1
Step-by-step explanation:
In a parallelogram opposite sides are equal/congruent.
Using this, we know that 3a-4=a+2 and b+1=2b
1st equation:
3a-4=a+2
-a -a
2a-4=2
+4 +4
2a=6
a=3
2nd equation:
b+1=2b
-b -b
b=1
a=3, b=1
Does this graph show a function? Explain how you know.
Answer:
A
Step-by-step explanation:
It may look like it failed but it didn't. Nun of the points duplicate