Answers
10) 0
11) 1/2
12) -2/3
Related Questions
Element X decays radioactively with a half life of 8 minutes. If there are 480 grams of
Element X, how long, to the nearest tenth of a minute, would it take the element to
decay to 14 grams?
y=a(.5)
Answers
Answer:
40.8 minutes
Step-by-step explanation:
Element X decays radioactively with a half life of 8 minutes. If there are 480 grams of Element X, how long, to the nearest tenth of a minute, would it take the element to decay to 14 grams?
The formula to find how long it would take which is the time elapsed is given as:
t = t½ × In(Nt/No)/-In2
t = ?
t½ = 8 minutes
Nt = Amount after the time of decay = 14 grams
No = Original Amount of substances = 480 grams
t = 8 × In(14/480)/-In2
t = 40.796285388407 minutes
Approximately to the nearest tenth = 40.8 minutes
Therefore, it would take the element X, 40.8 minutes to decay to 14 grams
A canister holds 3 blue pens, 4 black pens, 2 red pens, and 6 pencils. The simplified ratio of ALL the pens to pencils is
Answers
Answer:
The simplified ratio of ALL the pens to pencils is
= 3:2
Step-by-step explanation:
A canister holds 3 blue pens, 4 black pens, 2 red pens, and 6 pencils.
Step 1
Sum of all the pens is:
Blue pens + Black pens + Red pens
= 3 + 4 + 2
= 9 pens
Number of pencils = 6 pencils
Step 2
The simplified ratio of ALL the pens to pencils is
Pens : Pencils
= 9 : 6
= 3:2
What should be added to
4x+5y to get 7x-2y.
Answers
Step-by-step explanation:
7x-2y-4x+5y(This is what you should do)
Rearrange the like terms:7x-4x-2y+5yFinal answer:-3x+3yPLEASE FOLLOW ME AND MARK AS BRAINILIEST IF YOU THINK IT'S WORTH IT :)Will a pair of 6 feet 11 inch long skis fit in a wardrobe that is 3 feet long, 2 feet wide and 6 feet high?
Answers
Answer:
Step-by-step explanation:
Length of a pair of skis = 6 feet 11 inches
Maximum length of a the skis that can be fitted in a wardrobe is along the diagonal of the wardrobe.
From the picture attached,
BC² = 3² + 2² [By Pythagoras theorem]
BC = √(13)
By applying Pythagoras theorem in ΔABC,
AB² = AC² + BC²
AB² = 6² + (√13)²
= 36 + 13
AB = √49
Ab = 7 feet
Since, "diagonal length of the wardrobe is more than the length of skis,
skis can be fitted"
Place a check mark in the box next to each irrational number
Answers
C because its have a root
D because have π
E because have a root
question in pic! help asap!! will give brainliest!!
Answers
Mr Thompson please help with my new HW
Answers
Answers:
C) x = plus/minus 11B) No real solutionsC) Two solutionsA) One solutionThe value 18 goes in the first blank. The value 17 goes in the second blank.========================================================
Explanations:
Note how (11)^2 = (11)*(11) = 121 and also (-11)^2 = (-11)*(-11) = 121. The two negatives multiply to a positive. So that's why the solution is x = plus/minus 11. The plus minus breaks down into the two equations x = 11 or x = -11.There are no real solutions here because the left hand side can never be negative, no matter what real number you pick for x. As mentioned in problem 1, squaring -11 leads to a positive number 121. The same idea applies here as well.The two solutions are x = 0 and x = -2. We set each factor equal to zero through the zero product property. Then we solve each equation for x. The x+2 = 0 leads to x = -2.We use the zero product property here as well. We have a repeated factor, so we're only solving one equation and that is x-3 = 0 which leads to x = 3. The only root is x = 3.Apply the FOIL rule on (x+1)(x+17) to end up with x^2+17x+1x+17 which simplifies fully to x^2+18x+17. The middle x coefficient is 18, while the constant term is 17.you can view the question below.
Answers
Can someone please help me on this??
Answers
(x^3 - 6x^2 + 18x - 10)(x)
ANSWER: x^4 - 6x^3 + 18x^2 - 10x
PLEASE HELP ME!!!! I'M GIVING 10 POINTS
1. A landscaping company charges $100 for its services plus $15 per hour. Another company charges $40 per hour. Find the number of hours for which the two companies would charge the same amount.
2. Refer to the previous problem. What would that charge amount be?
Answers
Answer: 4 hours, $160
Step-by-step explanation:
100+15x= 40x
100= 25x
4=x
4 Hours
4*40 = 160
or 100 + 15*4= 160
The function y= 40,000(1.05)^t represents the population of a town t years after 2010.
By what percent does the population increase each year?
What will the population be in 2017? Round your answer to the nearest hundred.
Answers
40,000(1.05)/2017(2010)
So the population will be 185.9752903610
round to the nearest hundred
186
What is the equation of the axis of symmetry
Answers
Answer:
x=3
Step-by-step explanation:
What is the value of the expression shown?
24 - 5^2
Answers
Answer:
-1 is the value
Step-by-step explanation:
24 - 5² = 24 - 25
= -1
The beachfront path was 5,942 feet long.
A tropical storm caused waves that washed away 2,916
feet from the end. How long was the path after the storm?
A 3,016 feet
B 3,026 feet
C 8,858 feet
D 3,036 feet
Answers
B) 3,026 feet
Cause 5,942 - 2,916 = 3,026 feet
Beverly makes wreaths to sell for the fall season. She picked 430 pine cones from the wooded area near her house. If she uses 23 pine cones per wreath, how many wreaths can she make?
Answers
Answer:
18.7 wreaths
Step-by-step explanation:
Beverly makes wreaths to sell for the fall season. She picked 430 pine cones from the wooded area near her house. If she uses 23 pine cones per wreath, how many wreaths can she make?
From the above question:
23 pine cones = 1 wreath
430 pine cones = x wreaths
Cross Multiply
23 pine cones × x wreaths = 430 pine cones × 1 wreath
x wreaths = 430 pine cones × 1 wreath/23 pine cones
x wreaths = 18.695652174 wreaths
Approximately = 18.7 wreaths
50 points! Look at the picture attached. Random answers will be reported
Answers
Answer:
The first one does not work, the second one does.
Step-by-step explanation:
Use the triangle inequality formula:
a = 15
b = 37
c = 53
15 + 37 > 53 No
It does not work.
a = 9
b = 16
c = 8
9 + 16 > 8 Yes
9 + 8 > 16 Yes
16 + 8 > 9 Yes
The first one does not work, the second one does.
Hope this helps! <3
Which of the following is the reference angle for an angle that measures 222 degrees ?
1.22
2.48
3.64
4.42
Answers
If y varies jointly as x and z and y=60 when x= 10 and z=-3, find y when x=8 and z=15.
Answers
Answer:
y = -240
Step-by-step explanation:
If y varies jointly as x and z, then y/(xz) = k where k is the constant of proportion
60/10(-3) = 60/-30 = -2 = k
Now, y/(xz) = -2
y/8(15) = -2
y/120 = -2
y = -240
The graph of y = 8x + 16 is shown. Which statement is true about the function?
Answers
Answer:
A, The function has exactly one zero at x = -4
Step-by-step explanation:
As you can from the graph, the graph ONLY touches y = 0 at ONLY x = -4.
Can someone please answer my question for real please. I’ll give extra points
Answers
Question:
In triangle FGH, the measure of angle H = 90°, HG = 48, FH = 55, and GF = 73. What ratio represents the tangent of angle G?
___________________________________________________
Solution:
The triangle FGH should look like that in the attachment.
Tangent of angle G = opposite side/adjacent side
= FH/HG
= 55/48
Determine a pair of angles (one positive and one negative) in degree measure coterminal to the angle 117°.
Answers
Answer:
Option B.
Step-by-step explanation:
When we have an angle A, in degrees, the coterminal angles are all the angles that can be written as:
B = A + n*360°
Where n is a positive or a negative integer (if n = 0, then B = A, which means that A is coterminal with itself, which is trivial).
Now we want to find two coterminal angles to 117°, such that one is positive and the other negative.
Then we can do:
for the positive one, use n = 1.
B = 117° + 1*360° = 477°
For the negative one, use n = -1
B = 117° - 1*360° = -243°
Then the two angles are 477° and -243°
The correct option is B.
8.4.PS-16
I NEED HELP ASAP
A student needed to find the measure of angle b. She incorrectly said
m2b = 127°. Find the correct measure of angle b. What mistake did she
likely make?
. .
b
53°
(The figure is not shown to scale.)
mZb=IN
H
1
0
va
Va
.
(1,1)
More
Enter your answer in the answer box and then click Check Answer.
1 part
remaining
Clear All
Check Answer
Answers
Answer:
your answer will be m<b=37
Step-by-step explanation:
hope it helps
Answer:
37°
She likely thought that angle b and 53° added up to 180 instead of 90
Step-by-step explanation:
b and 53° make a right angle
b + 53° = 90°
90° - 53° = 37°
She likely thought that angle b and 53° added up to 180 when it actually adds up to 90
Katherine has 4 red pens, 6 blue pens, and 11 black pens in her book bag. If she randomly pulls out one pen, what is the probability that it will be black?
Answers
Answer: 52.38%
Step-by-step explanation:
11 out of 21
11/21
.5238
52.38%
Chandra and her friends bought three tubs of popcorn at the movies for t dollars each and some candy that cost $7.00. If the girls spent less than $28, what is the most a tub of popcorn could cost? Write an inequality to represent the situation.
Answers
Answer:
3t+ 7 < 28
Step-by-step explanation:
The inequality function as follows;
Given that the cost is $7
There are three tubs of popcorn i.e. t
And, if the girl spend lower than $28 so the inequality function is
3t + 7<28
Hence, the above represent the answer
Q. What is the second step in solving the following equation?
-3x + 5 = 20
Answers
-3x=15
2. divide by -3 on both sides
x=-5
The area of a rectangle is 192 in ^2. The ratio of the length to the width is 4:3. Find the length and the width.
The length of the rectangle is ___ in.
The width of the rectangle is___.
Answers
Answer:
Length = 16 in
Width = 12 in
Step-by-step explanation:
Given:
Area of a rectangle = 192 in²
Ratio(length to width) = 4:3
Find:
Length and the width
Computation:
Ratio(length to width) = 4:3
So,
Length = 4a
Width = 3a
Area of a rectangle = Length x Width
192 = 4a x 3a
192 = 12a²
a² = 16
a = 4
Length = 4a = 4 x 4 = 16 in
Width = 3a = 3 x 4 = 12 in
Please help ASAP will give brainilest to best answer
Answers
Answer: 100
Step-by-step explanation:
1 cubic inch would just be 100 because each cube is 1 cubic inch. So 100(number of cubes)/1(cubic inch)=100 I hope I'm right :)
If a triangle has a leg with a length of 6 units and a hypotenuse with a length of 10 units, find the length of the other leg.
Answers
Answer: 8 units
Step-by-step explanation:
This can be solved using the Pythagorean Theorem:
c² = a² + b²
c is the hypotenuse
a and b are the sides
Solving for the length:
10² = 6² + b²
100 = 36 + b²
b² = 100 - 36
b² = 64
b = √64
b = 8 units
The missing side is 8 units.
PLEASE HELP ASAP PLEASE
Answers
Answer:
The formula is Lenght * width * height = 12*6*5= 360 in^2
hiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii can i get help
Answers
Answer:
The answer is B
Step-by-step explanation:
The opposite of the opposite of the number is the number itself
-(- turns positive