Answers
Answer:
16. D
17. 5^-1 · 5^-1 and 25^-1
8^0 · 8^3 and 8^3
Step-by-step explanation:
When you multiply two same numbers with exponents, just think of it as adding up exponents.
When you divide two same numbers with exponents, just think of it as subtracting exponents.
If a parenthesis has an exponent outside, then every exponent inside the parenthesis will be multiplied by that outside parenthesis.
(5^-1)^-2 · 5^3 ÷ 5^7
5^2 · 5^3 ÷ 5^7
5^5 ÷ 5^7
5^-2
When exponents are negative, you have to flip them or put them on the other side
5^-2 = 1/5^2 = 1/25
Let's try to find the equivalent pairs
6^7 ÷ 6^-2 = 6^5
6^9 = 6^5 Not equivalent
(6^3)^0 = 6
6^0 = 1 (Any number with a zero exponent is always 1)
1 = 6 Not equivalent
5^-1 · 5^-1 = 25^-1
5^-2 = 25^-1
Flip em
1/5^2 = 1/25
1/25 = 1/25 Equivalent
8^0 · 8^3 = 8^3
8^3 = 8^3 Equivalent
4^-3 ÷ 4^2 = 4^5
4^-5 = 4^5 Not equivalent
Related Questions
please solve this please
Answers
Answer:
3
Step-by-step explanation:
Simplify each of the following:
a) root25 + root50 - root24 + root49
b) root2(2root8 – 3root32 + 4roor50)
Show your work
Answers
Answer:
a)
√25 + √50 - √24 + √49 =5 + 5√2 - 2√6 + 7 = 12 + 5√2 - 2√6b)
√2(2√8 – 3√32 + 4√50) =2√16 - 3√64 + 4√100 = 2*4 - 3*8 + 4*10 = 8 - 24 + 40 = 24Answer:
a.) 12 + 5√2 - 2√6
b.) 24
Step-by-step explanation:
a) √25 + √50 - √24 + √49
√25 + √50 - √24 + √49Calculate the square root .
5 + √50 - √24 + 7Simplify the radical expression.
5 + 5√2 - 2√6 + 7Combine like terms.
5 + 7 + 5√2 - 2√6 12 + 5√2 - 2√6b.) √2 ( 2√8 - 3√32 + 4√50 )
√2 ( 2√8 - 3√32 + 4√50 )Simplify the radical expression.
√2 ( 4√2 - 3 × 2²√2 + 20√2)Evaluate the power.
√2 ( 4√2 - 3 × 4√2 + 20√2)Calculate the products.
√2 ( 4√2 -12√2 + 20√2)Combine like terms.
√2 × (4 - 12 + 20 )√2√2 × 12 √ 2Multiply.
2 × 12 24Someone please help me I got those three red boxes incorrect so many times
Answers
Hi there!
-10-2 is equal to -12, not -8. This changes everything.
The fraction would be -12/16, which simplifies to -3/4.
I hope this helps!
Answer:
1st red box:
-10 - 2 = -12
2nd box above:
-3
3rd box:
4
WILL MARK BRAINLIEST
picture included^^^^
need help asap please n thank you!
^^^^
Answers
Answer:
14
Step-by-step explanation:
The a value is from the center to the maximum
We want from minimum to max so we need 2 times the amplitude
a = 7
2 *7 = 14
How do I do this question
Answers
Answer:
Step-by-step explanation:
Join OB.
∠A=∠A (common)
[tex]\frac{AP}{AO} =\frac{\frac{1}{2} AO}{AO} =\frac{1}{2} \\\frac{AQ}{AB} =\frac{\frac{1}{2} AB}{AB} =\frac{1}{2} \\\frac{AP}{AO} =\frac{AQ}{AB}[/tex]
∴ ΔAPO and ΔAOB are similar.
[tex]\frac{PQ}{OB} =\frac{1}{2} \\[/tex]
∠P=∠O
∠Q=∠B
So PQ║OB
Similarly RS║OB
∴PQ║RS
Charlie runs laps around a track. The table shows how long it takes him to run different
numbers of laps. How long would it take Charlie to run 9 laps?
Number of laps
Time (min)
2
12
4
24
6
36
8
48
10
60
It will take Charlie
minutes to run 9 laps.
Answers
The quadratic formula can be used to solve any quadratic equation in standard form.
True or False
Answers
Answer:
True
Step-by-step explanation:
The quadratic formula can be applied to any quadratic equation in the form [tex]ax^2+bx+c=0[/tex] (standard form).
The quadratic formula: [tex]\displaystyle x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}[/tex]
I hope this helps!
Answer:
its true
Step-by-step explanation:
Write the slope of the line plz help me show the work
Answers
Answer:
2/5
Step-by-step explanation:
slope = rise/run
rise is a vertical distance
run is a horizontal distance
We need to find the rise and run between two points on the line.
Look at the point where the line crosses the y-axis. We need to go to another point on the line by going only vertically and horizontally.
Now start at that point, go 2 units up. The rise = 2. Now turn right and go 5 units to the right. The run = 5. You got to another point on the line.
rise = 2
run = 5
slope = rise/run
slope = 2/5
See the picture below.
Use trigonometric identities to solve each equation within the given domain.
4cos4(x) – 5cos2(x) + 1 = 0 from [0, 2π). PLEASE SHOW WORK!!!
Answers
Wages and salaries
Kelly earns a salary of $68 430 pa how much does he earn each week, each fortnight and each month?
Answers
Answer:
Each week = $ 1311.41
Each fortnight = $ 2622.84
Each month = $ 5702.5
Step-by-step explanation:
Given that,
Annual salary of Kelly = $ 68,430
As we know,
There are 52.18 weeks in a year.
So,
Weekly income = Annual salary ÷ no. of weeks in the year
= $ 68,430 ÷ 52.18
= $ 1311.42
Fortnight income = 2 * weekly income
= 2 * $ 1311.42
= $ 2622.84
Each month's income = Annual income ÷ 12(no. of months)
= $ 68,430 ÷ 12
= $ 5702.5
An airplane from Singapore to Melbourne takes about 7 1/2 hours to cover a distance of 6057 km. What is the average speed of the airplane.
Answers
Answer: 13.46 km/h
Step-by-step explanation:
7 1/2 hr= 450 min
6057/450= 13.46
What is the answer? How to solve?
Answers
Answer:
a +73°=90°
a= 90°-73°
a =17°
d+18°=90°
d=90°-18°
d =72 °
One number is larger than another by 9. If the greater number is increased by 10, and the lesser number is tripled, the sum of the two would be -41. What are the two numbers
Answers
Answer:
The larger number is -6, the smaller number is -15
Step-by-step explanation:
We have two numbers, a and b.
We know that one number is larger than another by 9.
Then we can write:
a = b + 9
then a is larger than b by 9 units.
If the greater number is increased by 10 (a + 10) and the lesser number is tripled (3*b), the sum of the two would be -41:
(a + 10) + 3*b = -41
So we got two equations:
a = b + 9
(a + 10) + 3*b = -41
This is a system of equations.
One way to solve this is first isolate one variable in one of the two equations:
But we can see that the variable "a" is already isolated in the first equation, so we have:
a = b + 9
now we can replace that in the other equation:
(a + 10) + 3*b = -41
(b + 9) + 10 + 3*b = -41
now we can solve this for b.
9 + b + 10 + 3b = -41
(9 + 10) + (3b + b) = -41
19 + 4b = -41
4b = -41 -19 = -60
b = -60/4 = -15
b = -15
then:
a = b + 9
a = -15 + 9 = -6
a = -6
can i get the answer quick
Answers
Answer:
p^3 - 7p^2q^2 + 2pq
Step-by-step explanation:
3pq +5p^2q^2 + p^3 = p^3 + 5p^2q^2 + 3pq
Let the number be x.
x + p^3 + 5p^2q^2 + 3pq + p^3 - pq
= 3p^3 - 2p^2q^2 + 4pq
x + p^3 + p^3 + 5p^2q^2 + 3pq - pq
= 3p^3 - 2p^2q^2 + 4pq
x + 2p^3 + 5p^2a^2 + 2pq
= 3p^3 - 2p^2q^2 + 4pq
x
= 3p^3 - 2p^2q^2 + 4pq - (2p^3 + 5p^2q^2 + 2pq)
= 3p^3 - 2p^2q^2 + 4pq - 2p^3 - 5p^2q^2 - 2pq
= 3p^3 - 2p^3 - 2p^2q^2 - 5p^2q^2 + 4pq - 2pq
= p^3 - 7p^2q^2 + 2pq
Therefore,
p^3 - 7p^2q^2 + 2pq should be added.
3. Rita is applying for a job as an engineer. Hier starting salary at Company will be $30,000 a $300 yearly
raise. Her starting salary at company will be $65.000 with a 5% increase sach year. If Rata is working at a
company for 5 years. Which company should she pick?
Answers
Answer:
The 65,000 salary
Step-by-step explanation:
Because the 30,000 salary after 5 years would be 31,500.
30,000+300=30,300
30,300+300=30,600
30,600+300=30,900
30,900+300=31,200
31,200+300=31,500
The 65,000 paying company
65,000x1.05=68,250
68,250x1.05=71.662.5
71,662.5x1.05=75,245.625
75,245.625x1.05=79,007.90625
79,007.90625x1.05=82,958.3015625
her salary after 5 years would be 82,958.3015625
HELP PLEASE THANK YOU SO MUCH BRAIN FOR CORRECT
Answers
Answer:
A: Only (2,3)
Step-by-step explanation:
1. 3-3 = 5(2-2) WORKS! (2,3)
2. 2-3 = 5(3-2) Does not work :(
Answer:
Only A
Step-by-step explanation:
If you plug in x or y into the equation, only (2, 3) works
Given P(B | A)=0.75, P(A ∩ B)=0.15, P(B’)=0.7, find P(A ∪ B)
Answers
By definition of conditional probability,
P(B | A) = P(A ∩ B) / P(A)
==> P(A) = P(A ∩ B) / P(B | A) = 0.15/0.75 = 0.2
By definition of complement,
P(B') = 1 - P(B)
==> P(B) = 1 - P(B') = 1 - 0.7 = 0.3
Now by the inclusion/exlcusion principle, we have
P(A U B) = P(A) + P(B) - P(A ∩ B)
==> P(A U B) = 0.2 + 0.3 - 0.15 = 0.35
How do you solve this?
rs/a = k for r
Answers
Answer:
Step-by-step explanation:
In [tex]\frac{rs}{a}=k[/tex] begin by multiplying both sides by a to get
rs = ak and divide away the s to get
[tex]r=\frac{ak}{s}[/tex]
plzzz helpppp due today
Answers
Answer:
3 sqrt(3)
Step-by-step explanation:
Since this is a right triangle, we can use trig functions
sin theta = opp side / hyp
sin 60 = ZY / 6
6 sin 60 = ZY
6 (sqrt(3) /2) = ZY
3 sqrt(3) = ZY
graphical representation of 2x – 1 = 3?
Answers
Answer:
[tex]2x - 1 = 3 \\ 2x = 3 + 1 \\ 2x = 4 \\ x = \frac{4}{2} \\ x = 2[/tex]
How does the graph of g(x)=2⌈x⌉ differ from the graph of f(x)=⌈x⌉?
A) Multiplying by 2 compresses the graph of g(x)=2⌈x⌉vertically by a factor of 2.
B) Multiplying by 2 stretches the graph of g(x)=2⌈x⌉ vertically by a factor of 2.
C) Multiplying by 2 shifts the graph of g(x)=2⌈x⌉ up 2 units.
D) Multiplying by 2 shifts the graph of g(x)=2⌈x⌉ down 2 units.
Answers
Answer:
B is the Answer.
Step-by-step explanation:
A transformation of a function can be represented by
[tex]a(bx - h) + k[/tex]
where a is the vertical stretch or compression, b is the horizontal stretch or compression. H is the shift horizontally and k is the shift vertically.
The new function has a 2 instead of 1 on the orginally function. The function will stretch since 2 is greater than 1.
B is the answer.
help me pleaseeeeeeee!!!!!!!!
Answers
Answer:
8
Step-by-step explanation:
Using the chord chord theorem
10(4) = 5x
Solve for x
Simplify multiplication
40 = 5x
Divide both sides by 5
40/5 = 8
5x/5 = x
We're left with x = 8
Note:
Chord chord theorem states that if two chords intersect then the product of the measures of each part of one chord is equal to the product of the measures of the parts of the other chord.
Because the chords shown intersect the product of the parts of each chord should be equal to each other ( 4 * 10 = 5x )
Source: https://www.dummies.com/education/math/geometry/how-to-use-the-chord-chord-power-theorem
1. The position of a particle moving along a coordinate axis is given by: s(t) = t^2 - 5t + 1. Find the speed of the particle
Answers
Answer:
[tex]v(t) = 2t - 5[/tex]
Step-by-step explanation:
Given
[tex]s(t) = t^2 - 5t + 1[/tex]
Required
The speed of the particle
To do this, we simply differentiate the position function
i.e.
[tex]v(t) = s'(t)[/tex]
So, we have:
[tex]s(t) = t^2 - 5t + 1[/tex]
Differentiate
[tex]s'(t) = 2t - 5 + 0[/tex]
[tex]s'(t) = 2t - 5[/tex]
So, the speed function is:
[tex]v(t) = 2t - 5[/tex]
which expression is in the simplest form of 4x^3+x^2+2(x^3-3x^2)
a. 4x^3-6x^2
b. 6x^3-6x^2
c. 2x^3-6x^2
d. 6x^3-5x^2
Answers
Answer:
It's D. 6x^3-5x^2
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
4x^3+x^2+2(x^3-3x^2)
4x^3 + x^2 + 2x^3 -6x^2 (Distributed 2 through the parenthesis)
= 6x^3 -5x^2
Answered by Gauthmath
helppppp the question is on the image.
Answers
Answer:
12,6,4,3
Step-by-step explanation:
factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, and 36.
if you take 12,6,4,3 and add them together they equal 25 which is greater than 21 but less than 30
Answer:
3, 4, 9, and 12
3, 6, 6, and 12
Step-by-step explanation:
First, list out the factors of 36.
1, 2, 3, 4, 6, 9, 12, 18, and 36
The combinations of 4 numbers could be:
9 and 4, and 12 and 3 = 28
6 and 6, and 12 and 3 = 27
(8) The average daily temperatures in July of some cities in Texas are shown in the table. Which
of the following fiets the cities from greatest temperature to least temperatura
City
Average Daily
Temperature
Austin
84.52F
Dallas
85.9°F
San Antonio
85 F
Fort Worth
85.31°F
a. Dallas, Fort Worth, San Antonio, Austin
b. Austin, Dallas, San Antonio, Fort Worth
c. Austin, San Antonio, Fort Worth, Dallas
d. Dallas, San Antonio, Fort Worth, Austin
Answers
Answer:
A.
Step-by-step explanation:
85.9 > 85.31 > 85 > 84.52
Dallas, Fort Worth, San Antonio, Austin
Quick! HELP! THANK YOU SO MUCH!
If the difference between the interior and exterior angles of a regular polygon is 100°, how many sides does the polygon have?
Answers
Answer:
9 sides
Step-by-step explanation:
Sum of the measures of the interior angle of a polygon with n sides:
(n - 2)180
Measure of 1 interior angle of a regular polygon of n sides:
(n - 2)180/n
Sum of the measures of the exterior angles of a polygon, one per vertex:
360
Measure of 1 exterior angle of a regular polygon of n sides:
360/n
(n - 2)180/n = 360/n + 100
Multiply both sides by n.
(n - 2)180 = 360 + 100n
Distribute on left side.
180n - 360 = 360 + 100n
Subtract 100n from both sides.
80n - 360 = 360
Add 360 to both sides.
80n = 720
Divide both sides by 80.
n = 9
Answer: 9 sides
Explainnnnnn help me please
Answers
Answer:
99cm²
Step-by-step explanation:
area for a triangle = 1/2 x b x h
area = 1/2 x 11 x 18
area = 99cm²
In Rumpletick, 1/2 of 1% of the town's 100,000 families have incomes over 80,000 per year. How many families with incomes over 80,000 per year are in Rumpletick?
Answers
Answer:
[tex]\frac{1}{2} * \frac{1}{100} *80,000[/tex]
"400"
Step-by-step explanation:
Problema 6 Descompongan los siguientes números en factores primos. ¿Es posible encontrar, para cada número, más de una descomposición en factores primos? a. 42 b. 31 c. 36 d. 45
Answers
Answer:
a: 42 = 2*3*7
b: 31 = 31*1
c: 36 = 2*2*3*3
d: 45 = 3*3*5
Cada descomposición es unica.
Step-by-step explanation:
Sabemos que todo número entero puede ser reescrito como un producto de números primos.
Esta descomposición es única, dado que una vez tenemos un número escrito como producto de primos, esos números primos no pueden descomponerse en otra cosa, por lo que se concluye que una descomposición en primos es única.
a: 42
Para obtener la descomposición, podemos comenzar dividiendo por primos, comenzando por los más bajos.
En este caso, podemos comenzar por 2:
42/2 = 21
asi, podemos reescribir:
42 = 2*21
Ahora ya tenemos un factor que es primo, el 2, y un factor que no lo es, el 21.
Asi que debemos reescribir el 21 como producto de primos.
Y sabemos que 3*7 = 21, donde ambos 3 y 7 son primos, entonces:
42 = 2*21 = 2*3*7
42 = 2*3*7
así hemos reescrito 42 como un producto entre números primos.
b. 31
31 es un número primo, por lo que su descomposición es:
31 = 31*1
c. 36
Comenzamos dividiendo por 2.
36/2 = 18
36 = 2*18
Volvemos a dividir por 2 el 18.
18/2 = 9
18 = 2*9
reemplazando eso en nuestra descomposición obtenemos:
36 = 2*18 = 2*2*9
9 es impar así que no podemos dividir por 2, pasamos al próximo número primo, el 3.
9/3 = 3
9 = 3*3
Reemplazando eso, obtenemos:
36 = 2*2*3*3
d. 45
no podemos dividir por 2, puesto que es un número impar, así que pasamos al próximo primo, el 3.
45/3 = 15
45 = 3*15
Ahora descompongamos el 15.
15/3 = 5
15 = 3*5 (notar que 3 y 5 son primos)
Reemplazando eso, obtenemos:
45 = 3*15 = 3*3*5
45 = 3*3*5
