Answer:
2x+5=20
2x=20-5
2x=15
x=15/2
x=7.5
2x+5=20
2x=20-5
X= 15/2
Simplify: x^1/3(x^1/2+2x^2)
Answer:
A) x^1/6 + 2x^2/33
Answer:
I think its the last one
Step-by-step explanation:
(x^(2))/(6)+(2x^(3))/(3)
You roll a standard number cube 36 times, how many times can you expect to roll an odd number?
Answer:
18 times
Step-by-step explanation:
Half of the possibilities you can roll are correct. so 18 out of 36 times you roll an odd number.
You could also look at it another way. You can expect to roll each number 6 times, so the 3 odd numbers added together is 18 times.
no one wants to help me..someone please help!!
If the correlation coefficient is 0.654, what is the explained variation? (give answer as a percent)
Answer:
42.7%
Step-by-step explanation:
Correlation is a statistical measure of inter relationship between two variables' co movement.
Correlation coefficient denotes the direction & extent by which two variables' (same or opposite) movement is linked to each other.
Coefficient of determination = r^2 symbolises percentage of variation in one variable, that can be explained by variation in other variable.
So, in this case r^2 = (0.654)^2 = 0.427716 ; Hence approx 42.7% variation in one variable can be explained by variation in other.
why is this true 9a=11a-2a
Answer:
9a = 11a - 2a
9a = 9a
Step-by-step explanation:
9a = 11a - 2a
11 - 2 = 9
Similarly, 11a - 2a = 9a
Eleven minus two equals nine. Similarly, 11a minus 2a equals 9a. You can subtract them because they both have the same variable a.
HELP! WILL MARK BRAINLIEST!
Consider the function f(x) = x2 + bx – 2, where b is a constant. If the function has an axis of symmetry at x = – 3, what is the value of b?
Answer:
Step-by-step explanation:
if x=-3 is axis of symmetry then
(x+3)²=0
x²+6x+9=0
so b =6
i need help with geometry
Answer:
Step-by-step explanation:
Volume of a pyramid = [tex]\frac{1}{3}(\text{Area of the rectangular base})(\text{Height})[/tex]
Area of the rectangular base = Length × Width
= 8 × 6
= 48 mm²
Volume of the pyramid = 192 mm³
192 = [tex]\frac{1}{3}(48)h[/tex]
h = [tex]\frac{192}{16}[/tex]
h = 12 mm
Therefore, all the pyramids having height less than 12 mm will be fitted inside the given pyramid.
Height of the box(mm) Yes/No
10 Yes
13 No
8 Yes
The Hu family goes out for lunch, and the price of the meal is $52. The sales tax on the meal is 7%, and the family also leaves a 20% tip on the pre-tax amount. What is the total cost of the meal?
Answer:
60.04
Step-by-step explanation:
I got the tax amount and tip amount and added them.
Answer:
Step-by-step explanation:
cost of meal=$52
tax=52×7 %=3.64$
tip=52×20%=10.40$
total cost of meal=52+3.64+10.40=66.04 $
Need help! Does anyone know how to do this type of math? (It's geometry)
Answer:
71
Step-by-step explanation:
refer the attachment
to solve the question we need to recall one of the most important theorem of circle known as two tangent theorem which states that tangents which meet at the same point are equal that is being said
FA=AI=17CH=CG=2.5since [tex]\rm BA=FA+FB[/tex] and it's given that FA and BA are 17 and 29 FB should be
[tex]\rm 29=17+FB[/tex]therefore,
[tex]FB=29-17=\boxed{12}[/tex]once again by two tangent theorem we acquire:
[tex]FB=BH=\boxed{12}[/tex]As BC=BH+CH,BC is
12+2.5[tex]\boxed{14.5}[/tex]likewise,AD=AI+DI so,
21=17+DI [AD=21(given) and AI=17 (by the theorem)]thus,
DI=21-17=[tex]\boxed{4}[/tex]By the theorem we obtain:
DI=DG=4Similarly,DC=DG+CH therefore,
DC=4+2.5=[tex]\boxed{6.5}[/tex]Now finding the Perimeter of ABCD
[tex]P_{\text{ABCD}}=\text{AB+AD+BC+DC}[/tex]substitute what we have and got
[tex]P_{\text{ABCD}}=\text{29+21+14.5+6.5}[/tex]simplify addition:
[tex]P_{\text{ABCD}}=\boxed{71}[/tex]hence,
the Perimeter of ABCD is 71
Help I will give brainiest and stuff
Marcos purchased a sail boat for $56,900. He anticipates each year the boat will decrease in value by 8.1% from the previous year. Write an exponential function that models the value in dollars of the boat x years after Marcus's purchase.
Answer: [tex]56,900\left( 0.919\right)^x[/tex]
Step-by-step explanation:
Given
Marcos purchased a sailboat for [tex]\$56,900[/tex]
Each year the boat will decrease in value by [tex]8.1\%[/tex]
After 1 year it is
[tex]\Rightarrow 56,900-56,900\times 0.081\\\Rightarrow 56,900\left( 1-0.081\right)\\[/tex]
after another year it becomes
[tex]\Rightarrow 56,900\left( 1-0.081\right)-56,900\left( 1-0.081\right)\times 0.081\\\Rightarrow 56,900\left( 1-0.081\right)\cdot \left( 1-0.081\right)\\\Rightarrow 56,900\left( 1-0.081\right)^2[/tex]
After [tex]x[/tex] years it is
[tex]\Rightarrow 56,900\left( 1-0.081\right)^x[/tex]
[tex]\Rightarrow 56,900\left( 0.919\right)^x[/tex]
The graph of the function y=-2(x-1)+3
opens up.
a.True
b. False
Can someone help me ASAP
Answer:
48 cm^2
Step-by-step explanation:
The area of a trapezoid is calculated using the following formula :
(a+b)2*h (a: base, b: base, h: height)
(8+16)/2*4 = 48 cm^2
The area of a rectangle is 24x5y7 square yards. If the length of the rectangle is 3x2y6, which expression represents the width of the rectangle in yards?
Answer: [tex]8x^3y[/tex]
Step-by-step explanation:
Given
The area of a rectangle is [tex]24x^5y^7[/tex]
The length of the rectangle is [tex]3x^2y^6[/tex]
The area is given by the product of length and width
Suppose, w is the width of the area
[tex]\therefore A=l\times w\\\Rightarrow 24x^5y^7=3x^2y^6\times w\\\\\Rightarrow w=\dfrac{24x^5y^7}{3x^2y^6}\\\\\Rightarrow w=8x^3y[/tex]
Thus, the width of the rectangle is [tex]8x^3y[/tex]
Declan says that any number n, the product 4 times n is greater than 4. Which value of n shows why declan is incorrect
Answer: [tex]n>1[/tex]
Step-by-step explanation:
Given
The product of 4 times n is greater than 4 i.e.
[tex]\Rightarrow 4\times n>4\\\text{Dividing both side of inequality by 4}\\\\\Rightarrow \dfrac{4n}{4}>\dfrac{4}{4}\\\\\Rightarrow n>1[/tex]
It can be said that the value of n must be greater than 1.
WHAT IS THE SIN (-300)
Answer:
√3/2 or 0.886025
Step-by-step explanation:
Please help :) I will mark brainless
Michael earns 7 for each lawn he mows he wants to earn at least 45 write an inequality to show how many laws michael could mow solve the inequality and state your answer in a sentence
Answer:
At least means... From 45$ above or It should be equal to 45 or More...
7x≥45
x≥45/7
He need to Move at least 7 lawns.
7. Jeremiah is going to the local arcade with $32 in his wallet to spend. He plans to bowl one game and play some arcade games. A game of bowling costs $11, the bowling shoe rental is $3.75, and the arcade games cost $0.75 each. Write and solve an inequality to find the number of arcade games Jeremiah can play.
Answer:
x < 25
Step-by-step explanation:
ayee
How many solutions does this system of equations have? y=6x+x+3 y=7x+3+1
:]
Answer: no solutions
Step-by-step explanation:
y = −7x + 3
y + 7x = 10
Answer:
No solution the lines are parallel
Step-by-step explanation:
y = 6x +x + 3
y = 7x + 3
y = 7x + 3 + 1
y = 7x + 4
No solution the lines are parallel
A fish tank is 3.2 feet long, 1.3 feet wide, and 6.2 feet tall.
How many cubic feet of water can the fish tank hold?
Answer:
25.8 cubic feet
Step-by-step explanation:
Volume = l · w · h
V = (3.2)(1.3)(6.2)
V = 25.792
HELPPPPPPPPPPP
Find the volume of the cone.
Either enter an exact answer in terms of
π
πpi or use
3.14
πpi and round your final answer to the nearest hundredth.
Answer:
V = 18.84 units³
Step-by-step explanation:
The formula for the volume of a cone of base radius r and height h is
V = (1/3)(pi)(r²)(h).
Here, with pi = 3.14, r = 3 and h = 2, we get:
V = 18.84 units³
help me with math please.
Which statements about this system of equations are true? Check all that apply. Negative x + 6 y = 16. 8 x minus 6 y = negative 2. The x-variable will be eliminated when adding the system of equations. The y-variable will be eliminated when adding the system of equations. The sum of the system of equations is Negative 8 x = 14. X = 2 y = 3 There is only one solution to the system of equations.
Answer:
The y-variable will be eliminated when adding the system of equations.
There is only one solution to the system of equations.
Step-by-step explanation:
-x + 6y = 16 (1)
8x - 6y = -2 (2)
Add the equations to eliminate y
-x + 8x = 16 +(-2)
7x = 16 -2
7x = 14
x = 14/7
x = 2
Substitute x = 2 into (1)
-x + 6y = 16 (1)
-2 + 6y = 16
6y = 16 + 2
6y = 18
y = 18/6
y = 3
(x, y) = (2, 3)
Answer:
B and F
Step-by-step explanation:
PLZZZZ HELP MARKING BRANLIEST
Answer:
15 cm
Step-by-step explanation:
i had this question before
Which of the following rational functions is graphed below?
the answer is
C.IN MY OPINION HOPE IT HELPEDla tristeza es una magnitud
Step-by-step explanation:
ʜᴏʟᴀ ɪᴅɪᴏᴛᴀ
ᴇsᴛᴜᴘɪᴅᴏ ᴇsᴛᴜᴘɪᴅᴏᴏ sᴏ ᴘᴀᴛʜᴇᴛɪᴄᴏ
help anyone?? need to get this done
somebody pls help me and pls show work!
(no links)
Answer:
I think the answer is letter A.
Answer:
its A
Step-by-step explanation:
just expand it out
I'm guessing you don't know how to multiply fractions, just do a/b *c/d = ac/bd
and a(b+c) = ab+ ac
when you see the word expect you will
Answer:
Um, yes? No clue what you're asking.
Answer:
could you try to rephrase that question? I don't think I understand it.