Answer:
Step-by-step explanation:
exponents raised to a - power is an inverse function probably not the right word
a^-b = 1/(a^b) example 4^-2 = 1/(4^2) = 1/16
so (7^-1)^-1 is a double inverse which is back to the original number 7
inverted 7 twice
(7^-1)^-1 = (1/7)^-1 = 1/(1/7) = 7 trust me or use your calculator
since the coeffients are the same just add the powers... some exponent rule
5^2 * 5^4 * 5^-3 = 5^(2+4-3) = 5³
here is it written out
5^2 * 5^4 * 5^-3 = 5² × 5^4 × 5^-3 = (5×5) × (5×5×5×5) × (1/5×1/5×1/5)
5×5 × 5× (5×5×5 × 1/5×1/5×1/5) (5×5×5 × 1/5×1/5×1/5) = 1
5×5×5 = 5³
so
Proving Two Triangles Are Congruent: What additional is needed to prove that ABC = DBF using the SAS congruence theorem?
Answer:
the answer is the side length of ab and db
Answer: D on edge
Step-by-step explanation:
The following are the ages (years) of 5 people in a room:
17, 21, 15, 15, 25
A person enters the room.
The mean age of the 6 people is now 25.
What is the age of the person who entered the room?
Answer:
57 years
Step-by-step explanation:
total=25*6=150
17+21+15+15+25+x=150
93+x=150
x=150-93
x=57
Answer:
age=57
Step-by-step explanation:
ages=17 21 15 15 25 ?
17+21+15+15+25=93(old mean)
17+21+15+15+25+?=25(new mean)
25(new mean)*6(number of numbers)=150
?=150-93=57
= 57
Simplify the radical expression.
2√10 . 3√12
A.12√60
B.5√120
C.12√30
D.6√120
Simplify the radical expression.
√14q . 2√4q
A.3√56q
B.4q√14
C.2√56q^2
D.4√14q^2
Simplify the radical expression by rationalizing the denominator.
4/√11
A.11√4
B.4√11
C.4√11/11
D.√121/11
hey guys its my bday and i don't have time to do work rn but I need the answer for this. I will give brainly away
Please help as quickly as possible, this is Algebra 1!
Answer:
First-term is 7
The second term is 14
and the third term is 28
i think so im not 100%
solve the quadratic y = −x^2 + 4x + 1 with steps plz!
Answer:
x = -0.24 or 3.73
Step-by-step explanation:
[tex]\frac{-b + \sqrt{b^{2} -4ac } }{2a}[/tex] (There's supposed to be a ± between '-b' and the square root)
[tex]x^{2}[/tex] + 4x + 1 ( [tex]ax^{2} + bx + c[/tex] )
a = -1 ( there's no number before [tex]x^{2}[/tex] so its 1 )
b = 4
c = 1
Substitute into the quadratic equation.
[tex]\frac{-4 + \sqrt{4^{2} -4x1x-1 } }{2x-1}[/tex] ( the [tex]x[/tex] is just the multiplication sign )
= [tex]\frac{-4 + \sqrt{{16} +4 } }{-2}[/tex]
[tex]\frac{-4 + \sqrt{{20} } }{-2}[/tex] = -0.24 [OR] [tex]\frac{-4 - \sqrt{{20} } }{-2}[/tex] = 3.73
( The answers are to 2 decimal places )
I NNNNNEDDDDD HHHHEEELLLLLPPPPPPPP
Answer:
50
Step-by-step explanation:
as triangle is =180
then , 30 +100 +x =180
130 +x = 180
x= 180-130
=50
Answer:
50 degrees
Step-by-step explanation:
A triangle is 180 degrees and there is already a 30 and 100.
180-30-100=50.
Hope this helps =]
What is m∠1 ? I need help.
Answer:
*update* 99
Step-by-step explanation:
Write two numbers that multiply to the value on top and add to the value on bottom.
Answer:
14+9 14×9that is the answer
Vgvhgvhgvugvugvhjbjhbjhbjh
Answer:
d or c is the answer of the question
6) Find the value of x.
AKLM-ACDE
4x + 5
E
D
55
L
132
108
M M
K
Answer:
55 ? i think
Step-by-step explanation:
i just had the same question
HELPP with part (b) will make brainlest !!!!!
Answer:
I dont no the answer
Step-by-step explanation:
but maybe try the app socratic
It angle relationship and show work??
Answer:
m<x=146
Step-by-step explanation:
its a supplementary angle, meaning both angles add up to 180.
So we subtract 34 from 180 which is 146.
180-34=146
A bag contains 42 red, 45 green, 20
yellow, and 32 purple candies. You
pick one candy at random. Find the
probability that it is green or yellow.
Answer:
65/139 fraction form
0.47 decimal form
Answer:
Step-by-step explanation:
Total sample space , n (s) = 139
no of green candies , n (g) = 45
no. of yellow candies , n (y) = 20
Probability that is green or yellow is
P( g or y) = P(g) + P(y)
= n(g) / n(s) + n (y) / n(s)
= 45 / 139 + 20 / 139
= 65 / 139
hope it will help :)
The following can be decomposed in ????
Answer:
Triangle & semicircle
Step-by-step explanation:
PLS HELP ME I WILL GIVE YOU BRAINLIEST!
Answer:
The answer is 4) 69.08 m
Step-by-step explanation:
Find the value of each variable. If your answer is not an integer, write it in simplest radical form with the denominator
rationalized
y=
and z=
Answer:
7
Step-by-step explanation:
First you have to fined the unit rate
1,500/25= 60
Now your gonna do
300x60= 18,00
Carla e Ana foram tomar sorvete e gastaram r$ 23,00 dividido a conta em partes iguais, quanto cada uma pagou ? Gente me explica como faz a conta não só resposta por favor
Answer:
each of them has to pay $11.5 individually
Step-by-step explanation:
The computation of the amount paid by each one is shown below:
As carla and Ana gone for an icecream and the bill is $23 that should be divided equally
So here the carla should pay
= $23 ÷ 2
= 11.5
And, Ana should pay
= $23 ÷ 2
= $11.5
Hence, each of them has to pay $11.5 individually
Identifying and Solving Proportions
PLS ANY HELP!! thank you to whoever helps with question 6 <3
Answer:
Inez ran the mile in 5 minutes and 20 seconds
Great had the fastest time.
Her mile was faster by 20 seconds.
Step-by-step explanation:
Deepak sold his T.V set for ₹ 14100,losing 6%. For how much did he purchase it?
Answer:
₹14,946
Step-by-step explanation:
Tv s old for ₹14100
Deepak loses 6%
Purchase cost = Selling price + Loss cost
Purchase cost = ₹14100 + ₹14100(6%)
Purchase cost = ₹14100 + ₹846
Purchase cost = ₹14,946
The equation 7h=63 can be used to find how many hours h a person needs to work to earn $63 at $7 per hour. How many hours does a person need to work to earn $63?
HELPPP ME QUICKLY I HAVE TO SHOW MY WORK ALSO
Answer:
The equation 7h=63 can be used to find how many hours h a person needs to work to earn $63 at $7 per hour. How many hours does a person need to work to earn $63?
Step-by-step explanation:
The equation 7h=63 can be used to find how many hours h a person needs to work to earn $63 at $7 per hour. How many hours does a person need to work to earn $63?
Answer:
9 hours
Step-by-step explanation:
7h=63
divide both sides by 7 to get 9
7h/7=h
63/7=9
h=9
HELP ILL GIVE BRAINLIEST what shape is the base??
Answer:
rectangle
Step-by-step explanation:
it's width is 6
it's length is 12
it couldn't be a square
Write the recursive formula for this sequence: 3, 1, -1, ... *
Answer:
the answer is 5-2n please do you get it
Estimate the line of best fit using two points on the line.
A. y= -3/2x + 12
B. y= 3/2x + 12
C. y= -2/3 + 12
D. y= 2/3 + 12
Answer:
?
Step-by-step explanation:
Answer: c
Step-by-step explanation:
A p e x
Help me with this pls
Answer:
C
Step-by-step explanation:
How far up the house would a ladder be resting if it is 25 ft long and 3 ft
away from the house? Round to the nearest tenth if necessary.
5.3 ft
21 ft
24.8 ft
25.2 ft
Answer:
C
Step-by-step explanation:
The last one is absurd. You can't have a ladder reaching higher than itself. The question is a Pythagorean problem.
Givens
a = 3
b = ?
c = 25 feet
Formula
a^2 + b^2 = c^2
Solution
3^2 + b^2 = 25^2
9 + b^2 = 625 Subtract 9 from both sides.
b^2 = 625 - 9
b^2 = 616 Take the square root of both sides.
b = sqrt(616)
b = 24.8
A quadratic equation has zero real number solutions. Which could be the discriminant value associated with this equation?
a) -5
b) 0
c) 1
d) 6
Answer: c
Step-by-step explanation:
Lucy earned $24 for tutoring 2 students for 1 hour each. How much can she earn for tutoring 15 students for 1 hour each?
Answer:
Step-by-step explanation:
15(24/2)=$180
Question 6
2 pts
The data shows the speed, in miles per hour, of motorists on a stretch of
road.
42, 35, 44, 31, 47, 41, 36, 34, 39, 18, 37, 32, 37, 33, 43, 41, 44, 47, 46
18 miles per hour is an outlier.
0 47 miles per hour is an outlier.
The outlier decreases the mean speed.
The outlier decreases the median speed.
Answer:
18 miles per hour is an outlier
the outlier decreases the mean speed
Step-by-step explanation:
the low number of 18 is way different from the other numbers being in the 30's and 40's
this 18 will bring the mean of all the numbers own because it is a smaller number.
Answer:
Step-by-step explanation:
Mean:44
Median:31
Mode:47
Am not the smartest can someone help me.
Answer:
4 7/10
Step-by-step explanation:
Answer:
4 7/10
Step-by-step explanation:
Convirt all the fractions into 1/10ths. Makes addition easy. Hope this helps