Answers
Answer:
No, she isn't
Step-by-step explanation:
(-2)² is basically -2 x -2, which we know is 4.
-2² is slightly different. In this case, you don't consider it as the square of -2, but you do the square ignoring the negative sign, and then add it at the end.
So think about it like this,
We do 2² first, and then add the minus, so it becomes -4 instead of positive 4. Does that make sense?
Answer: Incorrect
Step-by-step explanation:
Rule :
[tex](-10)^2=| -10|^2 =100 \\\\ -10^2=-(10)^2=-|10|^2=100[/tex]
Then :
[tex]\rm -2^2=-|2|^2=-4 \\\\ (-2)^2= |-2|^2=4 \\\\ Then : \\\\ -2^2 =(-2)^2 \\\\ -4 \neq 4[/tex]
Related Questions
WILL GIVE BRAINIEST What is the solution set to log(x+4) < log6 x
Answers
It is B.
the question is so tough
The G.C.D and L.C.M of three numbers are 3 and 1008 respectively. If two of the numbers are 48 and 72 ,find the least possible value of the third number
Answers
formula= LCM ×GCD of the numbers ÷ The first number
Please help me with this one
Answers
Answer:
6 (2)^ = 6
6 (2)^2 = 24
a = 24
b = 6
y-intercept: (0,6)
y-intercept =
Step-by-step explanation:
6(2)^x
6 (2)^0 = 6 (a number ^0 = 1, 6 times 1 = 6)
6 (2)^2 = 6 x 4 = 24
Find the expression that is equivalent to:
x2 - 16x + 64
a (x – 8)(x + 8)
b (x + 8)(x + 8)
c (x + 8)^2
d (x – 8)^2
Answers
Answer:
D. (x – 8)^2
Step-by-Step Explanation:
x2 - 16x + 64:
Step 1: Use the sum-product pattern.
[tex]x^{2} -16x+64\\x^{2} -8x-8x+64[/tex]
Step 2: Common factor from the two pairs.
[tex]x^{2} -8x-8x+64\\x(x-8)-8(x-8)[/tex]
Step 3: Rewrite in factored form.
[tex]x(x-8)-8(x-8)\\(x-8)(x-8)[/tex]
Step 4: Combine to a square.
[tex](x-8)(x-8)\\(x-8)^{2}[/tex]
this is for trustmeiamsmart
hurry plzzzzzzzzzzzzzz
Answers
Answer:
distance between a and b is 1
distance between b and c is 3
distance between b and a is 1
6,-3
2-,5
-10,-3
-2-11
3
Answer:
Lol question for me only
Real Answer:
A and B = 1
B and C = 3
B and A = 1
Four points that are four points
6,-3
-2,5
-10,-3
-2,-11
Distance between some points
3
What angle relationship is demonstrated by x and y?
Answers
Answer:
corresponding angles
Step-by-step explanation:
x and y are in the same position in relation to the lines. They are to the right of the transversal and above the horizontal lines.
This means they are corresponding angles
it takes a snail 10 seconds to move 1 centimeter. How far does snail travel in 2 seconds
Answers
Answer:
0.2
Step-by-step explanation:
If it takes 10 seconds to move 1 centimetres, and you want to know about 2 seconds, you can divide by 5 on both sides.
1/5 = 0.20
It takes 2 seconds to move 0.2 centimetres (aka 20 milimetres).
The snail will travel 0.2 centimetre in 2 seconds.
it takes the snail 10 seconds to move 1 centimetre. The means in every 10 seconds the snail moves 1 centimetre.
The distance the snail can cover in 2 seconds can be computed below:
10 seconds = 1 cm
2 seconds = ? cm
cross multiply
distance it takes the snail to travel in 2 seconds = 2 / 10
distance it takes the snail to travel in 2 seconds = 1 / 5
distance it takes the snail to travel in 2 seconds = 0.2 cm
Therefore, the snail will travel 0.2 cm in 2 seconds .
read more: https://brainly.com/question/25492566?referrer=searchResults
please help me it's an 8 grade question
Answers
7. Write the equation of the line that is perpendicular to y = -5x + 1 and passes through the point (2,-1). slope intercept equation
Answers
Answer:
y = 1/5x - 7/5
Step-by-step explanation:
y = 1/5x + b
-1 = 1/5(2) + b
-1 = 2/5 + b
-7/5 = b
The length of a rectangular sign is 5 times its width. If the sign’s perimeter is 24 inches, what is the sign’s area The sign's area is ___ square inches.
Answers
The sign's area is 80 square inches.
A rectangle is a quadrilateral. This means that a rectangle has four sides.
The area of a rectangle = length x width
Perimeter of a rectangle = 2 x ( length + width)
Let the width of the sign be represented with w
The length of the sign is 5x
Substitute these dimensions into the formula for the perimeter of a rectangle.
(x + 5x) = 24
6x = 24
x = 24/6
x = 4 inches
The length is 5 x 4 = 20 inches
Area of the sign = 20 x 4 = 80 inches²
To learn more about the perimeter of a rectangle, please check: brainly.com/question/18793958?referrer=searchResults
The ratio of boys to girls in Mrs. Townsend's class is 3:4. If there are 15 boys in her class, how many students does Mrs. Townsend have in her class altogether?
Answers
Answer:
There should be 35 student in her class altogether.
I’ll give brainest just help
Answers
Answer:
B
Step-by-step explanation:
[tex]\sf 10\times 5\times 11[/tex]
Answers
Answer:
[tex]\sf\longmapsto \: 550[/tex]
Step-by-step explanation:
[tex]\sf\longmapsto \: 50 \times 11[/tex]
[tex]\sf\longmapsto \: 550[/tex]
Answer:
[tex]\sf 550[/tex]
Step-by-step explanation:
[tex]10 \times 5 = 50 \\ [/tex]
[tex]50 \times 11 = 550[/tex]
HELP ASAP. A cargo plane and a private jet leave at the same time from the same airport traveling in opposite directions. The jet travels at twice the speed of the cargo plane. They are 2,400 miles apart in 4 hours. Find the speed of the cargo plane and the jet plane.
////////////////Rate Time Distance
Cargo
___________________________
Jet
Answers
Three interior angles of a polygon are 125,140 and 160. The remain angles are 145 each. Calculate the sum of the interior angles of the polygon
Answers
Answer:
1440 degrees.
Step-by-step explanation:
125 + 140 + 160 = 425 degrees.
The remaining angles are each 145.
The exterior angles of all polygons sum to 360 .
So we have exterior angles sum of the 3 given angles
= (180-125) + ( 180-140) + (180-160)
= 55 + 40 + 20 = 115.
So the remaining vale of the sum is 360 - 115
= 245 degrees.
An internal angle of 145 will give an external one of 35 degrees.
245/35 = 7.
So there are 7 145 degree angles in the polygon.
Sum of the interior angles is therefore:
425 + 7*145
= 1440 degrees.
This is a 10 sides polygon ( a decagon).
If a rock was thrown at t-2.23tp and hits its height at 1.56 meters what was the height of the tower?
Answers
Answer:
t = 4.875 s
h(4.875) = 686.25 ft
t ≈ 11.424 s
Step-by-step explanation:
These questions are more easily answered if the equation is written in vertex form. Subtracting the constant and dividing out -16, we get ...
h(t) -306 = -16(t^2 -9.75t)
Adding the square of half the t-coefficient inside parentheses gives ...
h(t) -306 -380.25 = -16(t^2 -9.75t +23.765625)
h(t) = -16(t -4.875)^2 + 686.25
This tells us the maximum height is 686.25 ft at time t = 4.875 seconds.
__
When the rock hits the ground, h(t) = 0, so ...
0 = -16(t -4.875)^2 + 686.25
686.25/16 = (t -4.875)^2 . . . . . subtract 686.25, divide by -16
√42.890625 +4.875 = t ≈ 11.424 . . . . take the square root, add 4.875
The rock hits the ground after about 11.424 seconds.
what does ^ mean in math?
ex: If f(x) = 5 + 4x^2
Answers
for example, 5^2 = 5 squared = 25
y27
=yg
What is the answer to this question
Answers
Answer:
y³
Step-by-step explanation:
the answer should be three as 27÷3 is 9 the end product..
mark me brainliest
What is the value of y for the problem (2y + 20)? ANSWER QUICKLY - I WILL GIVE BRAINLIEST!
Answers
Answer:
2(y+10)
Step-by-step explanation:
factor out the common term 2
Answer:
2(y + 10)
Step-by-step explanation:
cannot find y unless this is supposed to equal something, but this is how you factor out the answer. let me know if you have any other questions!
The sum of the first 21 terms of the progression, - 18, - 15,-12.....is?
Answers
The sum of 21 terms is -1080.
What is Arithmetic Progression?A series in which the differences between each pair of following terms are the same is known as an arithmetic progression.An arithmetic progression is a sequence in which every phrase—aside from the initial term—is created by multiplying the previous term by a predetermined amount.given:
- 18, - 15,-12.....
First term, a= -18
common difference, d= -15 + 18= -3
So, [tex]S_{21[/tex] = 21/2 [ 2(-18)+ (21- 1) (-3)]
[tex]S_{21[/tex] = 21/2 [ -36 + (20) (-3)]
[tex]S_{21[/tex] = 21/2 [ -36 - 60]
[tex]S_{21[/tex] = 21/2 (-96)
[tex]S_{21[/tex] = 21 x (-48)
[tex]S_{21[/tex] = -1008
Hence, the sum of 21 terms is -1080.
Learn more about Arithmetic progression here:
https://brainly.com/question/16947807
#SPJ5
What is the value of x?
Answers
Answer:
x=50
Step-by-step explanation:
2x+20=3x-30
2x-3x=-x
20+30=50
-x+50=0
-x=-50
x=50
What does x equal I can’t figure it out
Answers
Answer:
x = 70
Step-by-step explanation:
Ok first let's find the angle where there is an exterior angle:
180-120=60
Then add this and the other inside known angle and subtract that from 180 to get your answer:
60+50=110
180-110=70
Answer:
70
Step-by-step explanation:
Sum of two interior angles equals to the exterior angle.
According to the U.S. Geological Survey, there are over 300,000,000 cubic miles of water on the planet. How this number represented in scientific notation
Answers
Answer:
3.00x10^8
Step-by-step explanation:
So you want to make sure the number before the x10^ is beween 10 and 0 not including 10 and 0. So 1.00-9.99.
Move the demcil place up in 300,000,000 till your first number is between 1 and 9.99.
Then count how many places you moved it up, in this case 8
Add the amount of times you moved up to the x10^(in this space).
you answer is now 3.00 plus the x10^8
3.00x10^8
use the slope-intercept form to graph the equation y=7x-4.
20 pts !!!
Answers
first, let's break the equation down.
y=7x-4
-4 represents your staring coordinate, or your y-intercept. This is because -4 does not have an x after so you know it is equal to your y value. So you start at (0,-4)
Now all you need to do is the y=7x part.
The 7x represents your slope.
Slope is equal to rise/run or y/x.
So for each coordinate, you go up 7 and to the right 1.
(0,-4)
(1,3)
(2,10)
I hope this helps!
Consider the system of equations.
x+2y=1
−3x−2y=5
How do you solve the system of equations with Cramer's rule?
Drag a value or determinant expression into each box to correctly solve the system using Cramer's rule.
Answers
The solution to the system of equations x + 2y = 1 and -3x-2y = 5 is:
x = -3, y = 2
The given system of equations:
x + 2y = 1............(1)
-3x - 2y = 5..........(2)
This can be written in matrix form as shown:
[tex]\left[\begin{array}{ccc}1&2\\-3&-2\end{array}\right] \left[\begin{array}{ccc}x\\y\end{array}\right] = \left[\begin{array}{ccc}1\\5\end{array}\right][/tex]
Find the determinant of [tex]\left[\begin{array}{ccc}1&2\\-3&-2\end{array}\right][/tex]
[tex]\triangle = 1(-2) - 2(-3)\\\triangle = -2+6\\\triangle = 4[/tex]
[tex]\triangle_x = \left[\begin{array}{ccc}1&2\\5&-2\end{array}\right]\\\triangle_x = 1(-2)-2(5)\\\triangle_x = -2-10\\\triangle_x =-12[/tex]
[tex]\triangle_y = \left[\begin{array}{ccc}1&1\\-3&5\end{array}\right]\\\triangle_y = 1(5)-1(-3)\\\triangle_y = 5 + 3\\\triangle_y =8[/tex]
[tex]x = \frac{\triangle_x}{\triangle} \\x = \frac{-12}{4} \\x = -3[/tex]
[tex]y = \frac{\triangle_y}{\triangle} \\y = \frac{8}{4} \\y = 2[/tex]
The solution to the system of equations x + 2y = 1 and -3x-2y = 5 is:
x = -3, y = 2
Learn more here: https://brainly.com/question/4428059
Which number is equivalent to 24 ⋅ 73 ⋅ 2 ⋅ 7−4?
Answers
Answer:
24524
Step-by-step explanation:
Use the order of operations to solve
Answer:
32/7 or 32
----
7
Step-by-step explanation:
Some more help please I need it
Answers
i dont know
Step-by-step explanation:
I JUST NEED THW POINTS
15
The fraction 15 is the same as 15 divided by ___
Answers
Answer:
If its just 15 then its 1
Step-by-step explanation:
Because 15 divided by 1 is 15 which is the fraction.
Answer:
Below,...!
Step-by-step explanation:
15 is not a fraction as is you can put any number over a one and that whole number immediately becomes a fraction:
[tex]\frac{7}{1} or \frac{43}{1} or \frac{987}{1} or \frac{1}{1} or \frac{15}{1}[/tex]
15/1 is your fraction so 15/1 divided into 15 equals 1
[tex]\frac{15}{1} / 15 = 1/1 = 1[/tex]
Answer: 1
Chow,...!
Can y’all help with 5 and 6 please !
I don’t know why I don’t get it-
Answers
6= 4
Pretty sure
is 9:2 equivalent to 18:4
Answers
Answer:
That is true
Step-by-step explanation:
9:2 = 18:4
9x2=18
2x2=4
Thus, this answer is true.
Answer:
Yes, because if you simplify 18:4, it would simplify to 9/2. Both ratios are equivalent.
Step-by-step explanation: