Answer:
Because when a number is raised to negative indice, it automatically becomes a fraction of 1, with the number raised to the positive indice. If the original expression becomes the other..its still equivalent and equal to the same value-just changed to make solving more easier
Answer:
see expression
Step-by-step explanation:
Using the rule of exponents
[tex]a^{-m}[/tex] ⇔ [tex]\frac{1}{a^{m} }[/tex] , then
[tex]2^{-4}[/tex]
= [tex]\frac{1}{2^{4} }[/tex]
Thus
[tex]2^{-4}[/tex] and [tex]\frac{1}{2^{4} }[/tex] are equivalent expressions
I just need help with this one problem
Answer:
Age of Nicole x= 24 years
Age of Donald = y = 48 years
Step-by-step explanation:
Suppose x represents Age of Nicole in years and y represents age of Donald in years
Sum of their ages is 72, therefore
[tex]x+y=72[/tex] -------------- (1)
Nicole is half as old as Donald
[tex]x= \frac{y}{2}[/tex] ------------------ (2)
Substitute x=y/2 in equation (1)
[tex]\frac{y}{2} +y = 72 \\3y = 2(72) \\y = \frac{144}{3} \\y= 48 \ years[/tex]
Now put y=48 in equation (2)
[tex]x =\frac{48}{2} \\x=24[/tex]
if tan theta= -0.87, find cot
Answer:
Step-by-step explanation:
[tex]cot(\frac{\pi }{2} -\theta)=tan \theta=-0.87[/tex]
or second method
[tex]\cot(\frac{\pi }{2} -\theta)=\frac{1}{\tan(\frac{\pi }{2} -\theta)} =\frac{1}{\frac{\tan\frac{\pi }{2} -\tan \theta}{1+\tan \frac{\pi }{2 } \tan \theta} } =\frac{1+\tan\frac{\pi }{2} \tan \theta}{\tan\frac{\pi }{2} -\tan \theta} \\(divide~the~numerator~and~denominator~by~\tan\frac{\pi }{2} )[/tex]
[tex]=\frac{\cot\frac{\pi }{2} +\tan\theta}{1-\cot\frac{\pi }{2} \tan\theta} \\=\frac{0+\tan \theta }{1-0*\tan\theta} \\=\tan \theta\\=-0.87[/tex]
Please help me with acellus
Answer:
66
Step-by-step explanation:
angle 1 and 4 are supplementary so the 2 added together equal 180. 180-124=56.
The sum of the triangles angles equal 180
180-56-58=66 which is the value of angle 2
a car travels 120 km in one and a half hours. what is the average speed
Answer:
The speed would be 60kph.
Answer:
80 mph (average)
Step-by-step explanation:
Split 120 into thirds, each one being half an hour.
120/3=40
Add two of them together, getting 80.
40x2(or 40+40)=80
Since the car travels 80 miles in one hour, 80 mph is the average speed.
Lupe is the manager of the football team, and she has to plan a team dinner for Saturday night. She knows that one large pizza can feed 3 players and one sandwich tray can feed 4 players. Lupe needs to order enough food for the 72 players on the team. (a) Write a linear equation to represent the number of pizzas (x) and the number of sandwich trays (y) she could purchase to feed the football players.
Answer:
3x + 4y = 72
Step-by-step exlanation:
Number of pizzas = x
Number of sandwich trays = y
one large pizza can feed 3 players
one sandwich tray can feed 4 players
Total players = 72
The linear equation is
3x + 4y = 72
Find the slope of the line passing through the points (-2, -7) and (3, 5).
Answer: The slope is 12/5
Step-by-step explanation:
You go up 12 from the point ( -2, -7) and then go over 5
dos números que
tengan una diferencia
de 8.
Answer:
10-2
Step-by-step explanation:
El número 10 y 2 tienen la diferencia de 8.
HELP PLEASE
Write an equation for the line in slope-intercept
form.
Answer:
y=2x+5
Step-by-step explanation:
slope intercept form is represented by: y=mx+ c
where, m is slope
c is y intercept.
solve for extra points and brainlist
Answer:
ポイント
Step-by-step explanation:
ポイント
Answer and explanation.
Answer:
you have to change the 145* to 110* and flip it to the idol point in x
Step-by-step explanation:
hope this helps, I was just doing this
Answer:
The polygon is a pentagon and it has 5 sides so use the formula to find the sum of the interior angles that is (n-2)×180°.so,
(5-2)×180 = 540°
540-145-110-105-100 = 80°
so the answer is 80°
Help pleasssseeee????
predicate pattern for 6,11,1,3,13,18,8,10,20,25
how do you answer this angle problem?
Answer:
H
Step-by-step explanation:
y=30
z=30
I hope it helpsneed hep wit this thx
Answer:
answer is 3
Step-by-step explanation:
n+1=3+2/2=3
The number is 3 and it is a odd number.
I hope it's helpful!
Which statement from "Ain't I a Woman?" is an example of pathos?
Well, children, where there is so much racket there must be something out of kilter.
That man over there says that women need to be helped into carriages, and lifted over ditches, and to have the best place everywhere.
I have borne thirteen children, and seen most all sold off to slavery, and when I cried out with my mother’s grief, none but Jesus heard me!
If my cup won’t hold but a pint, and yours holds a quart, wouldn’t you be mean not to let me have my little half-measure full?
Answer:
The answer is C
Step-by-step explanation:
I just took the test, got it wrong, just so I could answer this, I answered b, but it's c
Answer:
C is the answer :)
Step-by-step explanation:
got it right on the test
Solve the expression x=2
Answer:
-2
Step-by-step explanation:
Answer:
X = 2
Step-by-step explanation:
Help plz:):):):):)):):):):):)
Answer:
The answer is 60%
Step-by-step explanation:
12+8 = 20
12/20 = 0.6
which equation is true? 0.9 = 9/100 , 1.9 = 9/100 , 12/10 = 1.2 , or 18/9 = 0.2?
Answer:
12/10=1.2
Step-by-step explanation:
You just move the decimal one place value to the left. so 12÷10=1.2 which is the same as 12/10=1.2
Answer:
12/10
I'm pretty sure that's the answer
Which of the following graphs is not a function?
a.
On a coordinate plane, a parabola opens up and goes through (negative 2, 1), has a vertex at (0, 0), and goes through (2, 1).
c.
On a coordinate, a cubic root function approaches y = negative 3 and y = 3.
b.
On a coordinate, plane a cubic root function approaches x = negative 3 and x = 3.
d.
On a coordinate plane, a parabola opens to the right and goes through (1, 1), (0, 0) and (1, negative 1).
Answer: x=1
Step-by-step explanation:
What is the value of x?
12 units
10
15 units
20 units
24 units
Answer:
x = 20 units
Step-by-step explanation:
Using the Altitude- on- Hypotenuse theorem
( leg of Δ SRQ )² = (part of hypotenuse below it ) × ( whole hypotenuse ), so
x² = 16 × (16 + 9) = 16 × 25 = 400 (take the square root of both sides )
x = [tex]\sqrt{400}[/tex] = 20
giving away big points
Which set of directions correctly describes how to plot the point (8, 4) on the coordinate plane?
O Start at the origin. Move 8 units to the right, then move 4 units up.
O Start at the origin. Move 8 units up, then move 4 units to the right.
O Start at the origin. Move 8 units to the left, then move 4 units up.
O Start at the origin. Move 8 units up, then move 4 units to the left.
Answer:
1st option. (x, y). The x - coordinate comes first and describes the horizontal (right and left) plane. The y - coordinate describes vertical (up, down) movement.
Step-by-step explanation:
i did test on edg.
Answer:
the first one
Step-by-step explanation:
The expanded form of 128,005
Answer:
(100,000 x 1) + (10,000 x 2) + (1,000 x 8) + ( 1 x 5)
Step-by-step explanation:
At 4:00 AM, the temperature is – 12 °F. If the temperature drops 3 °F per hour, what will the temperature be at 6:00 AM?
Answer:
-18°F
Step-by-step explanation:
Starting temp = -12
Every hour temp drops by 3
Total elapsed hours = 2
3(2) = 6 total degrees dropped
-12 - 6 = -18 degrees F
Answer:
it will be -6f at 6:00am
Step-by-step explanation:
Please help me ASAP...
Answer: 20% of the teachers are from district M
There are 50 teachers from district M, so bar M is 50 units tall.
=======================================================
Work Shown:
Let's add up the bar heights of the bars shown in the chart.
J+K+L+N = 50+80+30+40 = 200
So 200 teachers are from districts J,K,L, or N.
We're told that 250 total teachers attended. This must mean M = 50. We're effectively solving 200+M = 250.
So you'll need to draw a bar over M such that it is 50 units tall. This will complete the chart.
Because there are 50 teachers from district M, out of 250 total, we can then compute the percentage to get
50/250 = 0.20 = 20%
So 20% of the teachers are from district M.
A group of nine friends go to a baseball game. The group buys 6 hotdogs and 3 hamburgers for a total of $27.75. A hamburger costs $1.75 more than a hot dog. What is the cost of a hamburger?
Answer:
let x be cost of a hotdog
let y be cost of hamburger
so,
5x + 4y = 17.75 eq. 1
4x + 5y = 18.25 eq. 2
manipulate eq. 1 so solve for x:
5x = 17.75 - 4y
x = 17.75/5 - (4/5)y
x = 3.55 - (4/5)y eq. 3
substitute eq. 3 to eq. 2:
4(3.55 - (4/5)y) + 5y = 18.25
14.2 - (16/5)y + 5y = 18.25
14.2 + (9/5)y = 18.25
(9/5)y = 18.25 - 14.2
4.05= (9/5)y
y = 2.25
x = 3.55 - (4/5)(2.25)
x = 1.75
hotdog costs $1.75
hamburger costs $2.25
Step-by-step explanation:
What's the answer - 0.5(4x - 5) > 7 Pls.
Answer:
-2x+2.5 > 7
Step-by-step explanation:
Im not sure what you mean by the answer because there are no answer choices so i jus simplified for you
A video store’s regular price of a video is $25.95, and it’s on sale for 25% off. What is the cost of the video after the discount is applied?
A.$32.44
B.$6.49
C.$19.46
D.$25.75
Hurry Please!
Answer:
Hi there, Your answser will be C
Hope this helps
please help me!!!!.......
Answer:
1.7%
Step-by-step explanation:
Simple interest (I) is calculated as
I = [tex]\frac{PRT}{100}[/tex] ← substitute values for I, P and T
17 = [tex]\frac{500(2)R}{100}[/tex] ( multiply both sides by 100 to clear the fraction )
1700 = 1000R ( divide both sides by 1000 )
1.7 = R
The rate of interest is 1.7%
What is the next step to inscribe a regular hexagon in Circle O below?
Answer:
draw diameter of the circle
The option second “with compass point at A, construct an arc of length OA intersecting the circle” is correct.
What is a circle?It is described as a set of points, where each point is at the same distance from a fixed point (called the centre of a circle)
To construct a regular hexagon in Circle O first mark point A then, with compass point at A, construct an arc of length OA intersecting the circle.
Thus, the option second “with compass point at A, construct an arc of length OA intersecting the circle” is correct.
Learn more about circle here:
brainly.com/question/11833983
#SPJ2
Jacob went shopping to buy a new pair of jeans. After paying an 8% sales
tax the total bill was $64.80. What were the price of the pants before the
sales tax was added? Hint: This is a working backwards problem.
What was the original price of the jeans?
