Easy 8th pre-algebra worth ten points each=30 points
1. -238(17)=
2. 920/-23=
3. 16(-40)(-8)=
Which of the following planes is parallel to ABCD
Answer:
P
1
:4x−2y+6z=3
P
2
=4x−2y−2z=6
P
3
=−6x+3y−9z=5
P
4
=2x−y−z=3
Step-by-step explanation:
The coefficients of each x,y,z give the direction vector of the normal vector of the plane.
Parallel but not identical condition will be that:
x
2
x
1
=
y
2
y
1
=
z
2
z
1
=
c
2
c
1
where each term is the coefficent of x,y,z respectively.
By observation we see P
2
and P
3
are parallel but not identical.
I hope it will help you please make me brainlestTHANK UCan someone explain the steps please
Answer:
x=70⁰
Step-by-step explanation:
a line equals 180⁰ so you subtract 110⁰ from 180⁰ and it gives you 70⁰
Answer:
70
Step-by-step explanation:
The angle on a straight line is 180 so minus 110 from 180
Calvin's mp3 player has a 2GB
memory card and can hold 500
songs. How many songs will he be
able to have on his mp3 player if he
upgrades to 4GB of memory?
4
[?]
são
2
=
500
Answer:
1000
Step-by-step explanation:
You just have to multiply by two
0.058
−
0.225
+
6.4
0.08
Answer:
0.345
Step-by-step explanation:
impretty sure thats right. but if im wrong im really sorry <333
write a function to repaint this. reflection across the y axis, then a translation a units to the right and b units up
Answer:
For the first one, I believe you would need to use a rotation matrix; to rotate 90º counterclockwise, the matrices would look like ; you would then multiply those out. A reflection across the x-axis would be changing the sign of f(x) (from negative to positive or positive to negative), a reflection across the y-axis would be changing the sign of x, translation a units to the right would be subtracting a from x, translation b units up would be adding b to x. Rotation of 180º about the origin would be the same format as the first matrix, except it would be cos180 and cos0 on the top and sin180 sin0 on the bottom. Reflection across the y-axis would be changing the sign of x again.
OR
1. We know that, 'Translation shifts the figure in any direction'.
As, the function f(x) is translated 'a' units to the right, the new form of function is f(x-a).
Again, the function is translated 'b' units up, the final form of the function is f(x-a)+b.
2 and 3. We know that, ' Reflection flips the image over a line'.
As the function g(x) is reflected over y-axis, the new form of the function is g(-x).
As the function h(x) is reflected over x-axis, the new form of the function is -h(x).
4 , 5 and 6. We know that, 'Rotation turns the image around a point to a certain degree'.
Let us assume the function to be a point (x,y).
As the function is rotated by 90° counterclockwise about the origin, the new function becomes ( y,-x ) i.e. R_{90}R
90
(x,y) = ( -y,x ).
As the function is rotated by 180° counterclockwise about the origin, the new function becomes ( y,-x ) i.e. R_{180}R
180
(x,y) = ( -x,-y ).
As the function is rotated by 2700° counterclockwise about the origin, the new function becomes ( y,-x ) i.e. R_{270}R
270
(x,
Step-by-step explanation:hopes this helps lol?
Find the lengths of LM⎯⎯⎯⎯⎯⎯ and PQ⎯⎯⎯⎯⎯ and determine whether they are congruent.
Hint: Congruent line segments have the same length.
Answer:
The fourth option is the answer.
Step-by-step explanation:
Use distance formula
[tex] {x}^{2} + {y}^{2} = {d}^{2} [/tex]
where x is the distance between the two endpoints of the congruent line segment and y is the distance between the congruent line segment.
[tex] {3}^{2} + {6}^{2} = 45[/tex]
Set 45 equal to d^2.
[tex]45 = {d}^{2} [/tex]
[tex] \sqrt{45} = d[/tex]
[tex]3 \sqrt{5} = d[/tex]
L and M have the same distance between points as well. so they are congruent.
(〖4〗^2 + 〖8〗^3 +〖2〗^2+ 2" " )/2" "
the answer is 12.492
Step-by-step explanation:
2×2=4+2=6÷2=3×2=6+9=9÷8=1.123+2=3.123×4=12.492
Need help with # 12 for distance/ midpoints formula. And another problem for #1 distance, segment and radicals ? Please help
Step-by-step explanation:
#12
PQ = 6x + 25
QR = 16 - 3x
PR = 6x + 25 + 16 - 3x
PR = 3x + 41
#1
D = √(-4 - 5)² + (-7 - 2)²
D = √(-9)² + (-9)²
D = √81 + 81
D = √162
D = 9√2
5(x-4)=4(x-5) solve the equation
Answer:
5x-20 =4x-20
5x-4x = -20+20
x= 0
the ratio of carp to bass in a lake is 7 to 2 there are 2,700 of these types of fish combined how much bass are in the lake please helpppppppppp
Answer:
divide
Step-by-step explanation:
divide the questions and then that should give you the answer if it doesn't
then subtract.
help me it’s number 3
Answer:
x multiplied by 6 is 6x.
Hope it helps
X multiplied by 6 can be expressed as 6x
Which set of numbers is contained in the set of rational numbers?
A Whole Numbers
B Natural Numbers
Integers
D
all of the above
Answer:
All of the above.
Step-by-step explanation:
All whole numbers are rational numbers. For example 5 can be be expressed as 5/1 thus a rational number.All integers are whole numbers thus they are all rational numbers.All natural numbers are rational numbers. For example, 5 is a natural number and can be expressed as 5/1 which is a rational number.X+2y, if X=-2 and Y=4
Answer:
6
Step-by-step explanation:
X=-2
Y=4
X+2y
= -2 + 2(4)
= -2 + 8
= 6
the answer is:
6
because:
X=-2
Y=4
X+2y
= -2 + 2(4)
= -2 + 8
) An angle exceeds three times its complement by 10°, find it.
Answer:
Let the angle be x
then,=x=3(x-90) -10
2x = 280
x = 140
Step-by-step explanation:
plz mark me as brainliest ❤️
1/9 as a rational number
Answer is 0.111
So it is rational
True or false: (√2 + √3)^2 = 2 + 3 = 5
Explain:
Hi! I'm happy to help!
A square root, means:
√x=y
This means that:
x=y·y=√x·√x
When we have the square button, it causes everything to be multiplied by itself once.
√x²=x
Due to the fact that the squared symbol is outside of the parenthesis, it causes both the square toot of 2, and the square root of 3, to be squared.
Now that we know this, √2², and √3²= 2, and 3.
This is why we get 2+3.
2+3=5, which is pretty self explanatory.
I hope this was helpful, keep learning! :D
I need help with this
Answer:
34
Step-by-step explanation:
1. plug in 4
sqrt(4) +2(x)^2
=2 +2(16)
=2+32
=34
The set of
includes both rational and irrational numbers.
A
integers
B
real numbers
с
whole numbers
D
counting numbers
Answer:
B. Real numbers
Step-by-step explanation:
Real numbers are all numbers, rational and irrational, that could be found on a plane. This includes all positive and negative numbers, and all decimals. So, this only excludes imaginary numbers. The rest of the options exclude irrational numbers and more.
Answer:
B real numbers
Step-by-step explanation:
\angle1=9x+5 what is angle 1?
Answer:
x = -5/9
Step-by-step explanation:
9x + 5 = 0
x = -5/9
if this is incorrect then ur question is missing something
Describe the transformation
(x,y) to (y-2, x+2)
How do I work this out (don’t tell me the answer) quickest reply gets brainiest
Answer:
2/7 divided by 3/4
So we can't divide fractions but what we can do is multiply them.
The First step is to do KCF (Keep, Change, Flip)
So It will be 2/7 TIMES 4/3. Keep 2/7 change the division sign to multiplication sign and flip 3/4 to 4/3. Now Multiply normally.
I hope this helps you find the correct answer <3
Write the slope-intercept form of the
equation that passes through: (4,2),
parallel to y = x-3
I tried to answer myself but somehow got it wrong, would like to know what I did wrong
-3x +y =12 -y + 9x =0 Método de Sustitución
:v SDLG
Answer:
it is 3
Step-by-step explanation:
3×3487+7+7+8+8+8++7+7
8
There is a 46% chance that a senior has "early out". What is the probability that a senior
DOESN'T have "early out"? *
(7 points)
what is energy????
bye have a great day
Answer:
the capacity of doing work is called energy
have a great day
Answer:
the capacity for doing work is called energy.
have a great day
stay happy and healthy
Trevor drove 44 miles in 1/2 hour. How far did he drive in 1 1/2 hour?
Answer:
132 miles
Step-by-step explanation:
1 1/2 + 1/2 = 3/2 x 2/1
6/2 = 3 hours
44 x 3 = 132 miles
Answer: 132 miles
Need help on this question please and thank you
9514 1404 393
Answer:
D. f^-1(x) = x^3 +15
Step-by-step explanation:
The inverse of ...
y = f(x)
is ...
x = f(y)
Solving this for y gives ...
x = ∛(y -15)
x³ = y -15 . . . . . . . . cube both sides
x³ +15 = y . . . . . . . add 15
The inverse function is ...
f^-1(x) = x³ +15
WORTH MANY POINTS PLEASE HELP!!!
A coffee shop uses the formula P=C+1/2S to calcuate the number of loyalty points a customer has earned after buying C coffees and S sandwiches.
a. If Pete has 32 loyalty points after buying 23 coffees, then how many sandwiches has he bought?
b. If Morgan has 22 loyalty points after buying 14 sandwiches, then how many coffees has she bought?
Answer: a.) Pete bought 18 sandwiches.
b.) Morgan bought 15 coffees.
Step-by-step explanation: The formula P = C + 1/2S lets us know that sandwiches are worth half as many points as coffees.
a. If Pete has 32 loyalty points after buying 23 coffees, then how many sandwiches has he bought?
Plug in the number of points (P) and the number of coffees (C).
32 = 23 + 1/2S
subtract 23 from each side of the equation.
9 = 1/2S
Now. to solve for S, multiply each side by 2.
18 = S
Pete bought 18 Sandwiches.
b. If Morgan has 22 loyalty points after buying 14 sandwiches, then how many coffees has she bought?
The same method can be used for problem b.
Plug in the number of points (P) and the number of sandwiches (S).
22 = C + 1/2 (14)
Multiply 1/2 by 14.
22 = C + 7
To solve for C, subtract 7 from each side of the equation.
15 = C
Morgan Bought 15 coffees.
Given m||n, find the value of x.
t
m
(2X-24)
(x+5)
hope this helps
May i have brainliest