Answer:
None of the above
14 = 3x -7
3x = 21
x = 7
help ASAP!!!
I'll give you points
G I DID THIS ON KHAN!!!
mike is training to run a marathon. currently, he can run four miles in 44 minutes. if he maintains this running speed, how long will it take him to run 10 miles?
pls help:)!
A 256- gallon barrel of radioactive Urikium is spilled at a factory. The entire area is evacuated. Experts say that the area can be deemed safe after only 2 gallons remain. Unfortunately, it is to toxic for any clean-up efforts, so residents will just have to wait for the Urikium to evaporate. Fortunately, Urikium has a half-life of only three hours. That means that half of the Urikium will evaporate every three hours
Answer:
21 hours
Step-by-step explanation:
Since 2^8 = 256, that means it will take 7 half-lives to become two gallons
7 half-lives * 3 hours = 21 hours
256, 128, 64, 32, 16, 8, 4, 2
Answer:
Experts say that the area can be deemed safe after only 2 gallons remain. Unfortunately, it is too toxic for any clean-up efforts. She residents will
Step-by-step explanation:
To solve half-life problems, you use the equations:
f(t) = T0 (1/2)^(t/t1/2). where T0 is the initial mass and T1/2 is the half-life.
So we get f(20)= 5 = T0•(1/2) ^ 20/11
T0 = 17.63 mg
For the second part of the question, we plug 0.5 mg into the equation:
0.5 = 17.63 • (1/2)^ t/11
t = 56.5 days
Using the net below, find the surface area
of the pyramid.
3\in.
2 in.
2 in.
Surface Area =
[?] in.2
Enter
Answer:
16
Step-by-step explanation:
Base: 2x2=4
The 4 Triangles: 2x3x1/2 (for each triangle), each triangle equals 3
3x4=12
12+4=16
16 is the final answer
MY FRIEND NEEDS THIS RN (40points) PLEASE AND TYY
Answer:
(2,2)
Step-by-step explanation:
Aiden walked 2 miles in 2/5 hour. Find the unit rate.
Answer:
1 mile- 2/10 hr
Step-by-step explanation:
2 miles- 2/5 hr
1 mile- 2/10 hr
(divide by 2)
hope this helped :)
Are the triangles below similar? Explain your answer.
Answer:
no
similar triangles have to be the same shape
Step-by-step explanation:
2 * m + n =
2 *(-2) + 3 = Sustituyendo el valor de cada letra.
-4 + 3 = -1
me ayudan porfa
Answer:
2xm+3=34
Step-by-step explanation:
ueuieiejdnnfmdjxjufirir
Cookies cost $3.50 per package. How many packages of cookies can Gail buy if she has \$42 .00? Write an equation and solve.
Answer:
Solve: 12 packagesEquation: n = $42.00¢Step-by-step explanation:
Given
1 package = $3.50¢
∴, ? package = 42.00¢
Equation
Identify the variable. Let n be the variables, then, the equation is: n=$42.00¢
Solve
Since 1 is 3.50
To find 42.00
Divide 42.00 by 3.50
42.00 ÷ 3.50 = 12
Therefore, Gail can buy 12 packages with $42.00¢
Explain how you know that x^2-8x+20 is always positive.
Please help.
Answer:
if you rearrange to complete the square, you get (x^2-4)^2 +4
and seeing as anything squared will always be positive or zero, the lowest possible value for (x^2-4)^2 is 0, when x = 4
and 0 + 4 = 4, which is greater than 0, so positive
Step-by-step explanation:
We have x^2-8x+20 is always positive.
What is equation?An equation is a mathematical statement that is made up of two expressions connected by an equal sign. In its simplest form in algebra, the definition of an equation is a mathematical statement that shows that two mathematical expressions are equal. For instance, 3x + 5 = 14 is an equation, in which 3x + 5 and 14 are two expressions separated by an 'equal' sign.
here, we have,
x^2-8x+20
=x^2-2.x.4+16+4
if you rearrange to complete the square,
you get (x^2-4)^2 +4
and seeing as anything squared will always be positive or zero,
the lowest possible value for (x^2-4)^2 is 0, when x = 4
and 0 + 4 = 4, which is greater than 0,
so, positive.
To learn more on equation click:
brainly.com/question/24169758
#SPJ2
Grade 2
Odd or Even
1. 66
2. 19
3. 42
4. 37
5. 91
6. 76
7. 61
8. 93
9. 26
10. 72
1. Even
2. Odd
3. Even
4. Odd
5. Odd
6. Even
7. Odd
8. Odd
9. Even
10. Even
Which product is irrational?
A. 2x50
B. 64x4
C. 9x49
D. 10x8
Answer:
i don't see in product in here that is irrational
Step-by-step explanation:
Ratio tables what’s the missing ratio
Answer:
16
Step-by-step explanation:
To solve we must first find what the given ratios equal
8/5 = 1.6
40/25 = 1.6
48/30 = 1.6
this means that x/10 = 1.6
To find x... multiply both sides of this equation my 10 to get x alone
x=1.6×10
x=16
Answer:
16
Step-by-step explanation:
I Hope this helps!
What is the remainder when x2 + 5 is divided by x +1?
Answer: the answer is 6
Step-by-step explanation: You can use polynomial long division or synthetic division.
Which sentence is not written correctly?
Group of answer choices
previous clocks only showed the hours and minutes.
I never knew that it was the first clock to show hours, minutes, and seconds.
I think Benjamin Franklin was an amazing person.
Dad and I read that it was the first clock to show hours, minutes, and seconds.
Which quotation is not written correctly?
Group of answer choices
"What are some things that Benjamin Franklin is noted for?" asked Ms. Kane.
"Yes, he invented the lightning rod," replied Ms. Kane.
"Benjamin Franklin wrote Poor Richard's Almanac," answered Jason.
Maria asked, "wasn't he an inventor, too?"
Which name is not written correctly?
Group of answer choices
Mr. Arnold Skelly
Ms. Andrea tillis
Miss Molly McRea
Dr. B. Rimmins
Which street name is written correctly?
Group of answer choices
72 country Acres Lane
1157 Wakeshire Terrace
4049 Cambridge ct.
5443 nothingham dr.
Which city and state is written correctly?
Group of answer choices
Fox Ridge, Indiana
west Haven, Connecticut
Grand isle, NE
Grand rapids, MI
Which sentence is not written correctly?
Group of answer choices
The Ganges is a river in India.
The Hawaiian Islands are in the Pacific Ocean.
Is Mt. Everest in nepal?
Crete is an island in the Mediterranean Sea.
Which sentence is not written correctly?
Group of answer choices
Yes, my birthday is October 31.
Isn't your birthday on halloween?
Jana's birthday is on the Fourth of July.
That's another name for Independence Day.
Which sentence is written correctly?
Group of answer choices
Memorial day is always the fourth Monday in May.
We do not have school on Martin luther King Day.
The girl scouts have an annual food collection in our town.
Have you ever been to the Strawberry Festival?
Which title of a poem is written correctly?
Group of answer choices
"The snow man"
"Yesterday in Oxford Street"
"A Charm For Spring Flowers"
"Something told the wild Geese"
Which sentence is written correctly?
Group of answer choices
I liked it better than "Atlantis, The Lost Empire."
Troy liked "Recess: School's Out" better.
My favorite movie is "The Parent trap."
Troy and I saw "The lion king" at the theater.
Answer:
1. previous clocks only showed the hours and minutes.
2. Maria asked, "wasn't he an inventor, too?"
3. Dr. B. Rimmins
4. 1157 Wakeshire Terrace
5. Fox Ridge, Indiana
6. Is Mt. Everest in nepal?
7. Jana's birthday is on the Fourth of July.
8.The girl scouts have an annual food collection in our town.
9. "Yesterday in Oxford Street"
10. My favorite movie is "The Parent Trap."
Step-by-step explanation:
1. Does not have proper capitalization.
HELPPP PLSSS 8TH GRADE MATH!!!!!
2x=8(x^2)
What is the solution of this maths equation?
Answer:
x=0,x=1/4
Step-by-step explanation:
2x=8(x^2)
Subtract 8(x^2) from both sides
2x-8x^2=8x^2-8x^2
Simplify
2x-8x^2=0
Factor 2x-8x^2;
2x-8x^2
=-8xx+2x
Rewrite 8 as 2*4
=-2*4xx+2x
Factor out common term -2x
=-2x(4x-1)
-2x(4x-1)=0
x=0 or 4x-1=0
Solve 4x-1=0;x=1/4
4x-1=0
Add 1 to both sides
4x-1+1=0+1
Simplify
4x=1
Divide both sides by 4
4x/4=1/4
Simplify
x=1/4
The solutions to the quadratic equation are;
x=0,x=1/4
Hope this helped!!!!
(I’ll give brainliest) The scale on Bobby's map is 2 in. = 50 mi. His final destination is 6 in. away
from his current location. How many miles does Bobby have to go before he
reaches his destination?
A.50 mi.
B.100 mi.
C.150 mi.
D200 mi.
Answer:
C. 150 miles.
Step-by-step explanation:
By multiplying the scale by 3 to get the value for 6 inches, you can find that 6 inches on the map is equal to 150 miles.
Please solve the equation for this missing angle. Please Help ASAP!!!
Answer: D
Step-by-step explanation:
5x + 4x = 180°
Angles on a straight line add to 180°
What is the value of 419 - 2)+72+ 12 HURRY PLEASE
Answer:501
Step-by-step explanation: So basically you take 419-2 now thats 417+72=489+12=501
Al multiplicar dos números negativos obtenemos como resultado un número
Answer:
positivo
Step-by-step explanation:
dos números multiplicados negativos siempre se vuelven positivos.
espero que esto ayude :)
3. Suppose the radius of the larger circle is r. What is its diameter?
d2 =
R2
Answer:
2r
Step-by-step explanation:
You suppose that the radius of a larger circle = r
so diameter = r*2 = 2r
aint really sure tho
Answer:
2R
Step-by-step explanation:
The formula to find the diameter states the relationship between the diameter and the radius. The diameter is made up of two segments that are each a radius. Therefore, the formula is: Diameter = 2 * the measurement of the radius. You can abbreviate this formula as d=2r.
plz have explanation with answer
ASAP please :))) will greatly appreciate
HELP PLEASE 10 POINTS
Answer:
A
Step-by-step explanation:
please help. solve either one I dont care :(
Help please
WILL MARK YOU BRAINLIEST!!!!!
hii please help i’ll give brainliest
Answer:
II
Step-by-step explanation:
Answer:
quadrant 2
Step-by-step explanation:
find the length of a using the pythagorean theorem. SOMEONE PLZ HELPPP:)
Answer:
Step-by-step explanation:
Answer:
a=6
Step-by-step explanation:
edge21
Solve the equation. 1/2y+4=2 4 –4 –1 12
Answer:
y = - 4Step-by-step explanation:
¹/₂y + 4 = 2 {subtract 4 from both sides}
¹/₂y = -2 {multiply both sides by 2}
y = -4