Answer:
2006 years old.
Step-by-step explanation:
If it had 50% of its carbon-14 it would be 5730 years old.
Since it has 65% left it is younger than 5730 years.
So it is (1 - 0.65) * 5730
= 2005.5 years old.
i need help with this
Answer:
I would say that the answer is D
Step-by-step explanation:
Hope this helps you:)
What is the total magnification of the 10x lens????
asap!!!! Please say the correct answer!!!!
Please answer i need it
Answer:
I think a rhombus
Step-by-step explanation:
Sassy Fashions buys dresses at wholesale and then marks them up for retail sale. They recently sold a dress at a 40% discount off their marked-up price. What percent mark-up did they originally apply to the dress if they broke even on the sale? Express your answer to the nearest whole percent.
Answer:
67%
Step-by-step explanation:
I did math counts
answer plssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss
Answer:
Wouldn't the answer be the point on -3 since
thats how mcuh money he's in debt now after buying that book?
Where is the blue dot on the number line? -7 ? -7.5. -8
Answer:
-7.5
Step-by-step explanation:
Answer:-7.4
Step-by-step explanation:
Hopen helps ❤
!!!!! PLEASE PLEASE HELP ME !!!!! IS ANYONE SEEING MY QUESTIONS??
Find the standard equation for the circle with center on the negative y -axis and passing through the origin with radius of 3.
A. x^2 + y^2 = 9
B. (x + 3)^2 + y^2 = 9
C. x^2 + (y + 3)^2 = 9
Answer:
The correct option is C : x² + (y +3)² = 9 .
Step-by-step explanation:
We know that the general equation for a circle is ( x - h )² + ( y -k )²= r², Where,
r is the radius.(h , k) is the center.Let the point be ( 0 , -y) , since it is on negative y axis . And the circle passes through the origin that is (0,0) . Hence the center will be 3 units down the y - axis that is ( 0 , -3) .Hence h will be 0 and y = (-3) .
Now its given that the radius of the circle is 3. So on substituting r = 3 , in standard form we have ,
⇒ ( x -h )² + ( y - k )²= r²
⇒ ( x - 0)² + { y - (-3) }² = 3²
⇒ x² + ( y + 3) ² = 3²
⇒ x² + ( y + 3)² = 9
Hence the correct option is C [ x² + ( y+3)² = 9 ] .• Note that I have attached the graph of the same .
Elan is painting the outside of a rectangular barn door. It is
80 inches high and 60 inches wide. What is the area of the
outside of the door?
Help ASASP
Answer:
9600
Step-by-step explanation:
80 times 60 times 2
Of the shirts produced by a company, 6.5% have loose threads, 9.5% have crooked stitching, and 3% have loose threads and crooked stitching. Find the probability that a randomly selected shirt has loose threads or has crooked stitching.
Answer:
[tex]P(L\ or\ C) = 0.13[/tex]
Step-by-step explanation:
Given
Represent loose threads with L, Crooked stitching with C.
So, we have:
[tex]P(L) = 6.5\%[/tex]
[tex]P(C) = 9.5\%[/tex]
[tex]P(L\ and\ C) = 3\%[/tex]
Required
Calculate P(L or C)
In probability:
[tex]P(A\ or\ B) = P(A) + P(B) - P(A\ and\ B)[/tex]
In this case:
[tex]P(L\ or\ C) = P(L) + P(C) - P(L\ and\ C)[/tex]
Substitute values for P(L), P(C) and P(L and C)
[tex]P(L\ or\ C) = 6.5\% + 9.5\% - 3\%[/tex]
[tex]P(L\ or\ C) = 13\%[/tex]
Convert to decimal
[tex]P(L\ or\ C) = 0.13[/tex]
Hence:
The required probability is 0.13
If you had 1.27x105 mL and 3.785 L equals exactly one gallon then how many gallons do you have? (Make sure you have the correct number of significant digits in your answer)
Answer:
33.6 gallons
Step-by-step explanation:
[tex]\frac{1.27x10^5 mL}{1}[/tex] × [tex]\frac{1 liter}{1000 mL}[/tex] × [tex]\frac{1 gallon}{3.785 liters}[/tex] = 33.5535 gallons = 33.6 gallons
The radius of a circle is 14 m. Find its area in terms of pie
HOPE THIS HELPS TO U
Steve determines that sides DK and BC are congruent. He also measures angle K and angle C and determines that
they are congruent. He concludes that the triangles are congruent by the SAS Congruence Theorem. Is Steve correct?
If he is incorrect, which congruence theorem should Steve use? Explain your reasoning
Answer and Step-by-step explanation: Two triangles are congruent when they have the same 3 sides and the same 3 angles.
One way to find if they are congruents is a theorem called "Side-Angle-Side" (SAS): if two sides and its included angle is equal to the other triangle's corresponding sides and angles, the triangles are congruent.
In the graph below, in triangle DEK, as Steve determined, side DK measures 12. In triangle ABC, side BC is also 12. The angles K and C are equals, so if sides EK and AC are congruent, SAS Congruent Theorem is correct.
To test it, find distances EK and AC, which is calculated as:
[tex]d=\sqrt{(x_{1}-x_{2})^{2}-(y_{1}-y_{2})^{2}}[/tex]
EK is a distance between points E(-6,4) and K(0,-4)
[tex]d=\sqrt{(-6-0)^{2}-(4+4)^{2}}[/tex] = 10
AC is a distance between points A(3,6) and C(9,-2)
[tex]d=\sqrt{(3-9)^{2}-(6+2)^{2}}[/tex] = 10
EK and AC have the same distances between each point, i.e., segment EK measures the same as segment AC, 10 units.
Therefore, triangles DEK and BAC are congruent proven by SAS Congruence Theorem.
Use the slope formula (m =
Y2 - Y1
) to find the slope of a line given two points.
X2 – X1
-1
(-7, -3) and (-6, -4)
x
1
(1, 6) and (-3,0)
1.5
(7, 2) and (0, -5)
For (7,2) and (0,5)
slope = 5-3/-7 = -2/7
can you guys please help me, I really REALLY need it.
A train is travelling at a constant speed in ten minutes it travels 24 km work out how far it travels in 30 minutes
50min
1 hour
which statement is true about points located in quadrant ||| in the coordinate plane?
Answer:
The x-coordinate is negative, and the y-coordinate is negative.
I GIVEEE BRAINLIST //
Answer:
-20% aka 20% decrease
Step-by-step explanation:
Answer:
450 %20
Step-by-step explanation:
How to Find the length of the median of each trapazoid
sarah puts $500 in a savings account that earns 3.15% compounded annually. how long does it take for sarah to double her money
Answer: What are the choices?
Step-by-step explanation:
What is the area of the trapezoid?
Ignore that I've already marked an answer. That was on accident.
C. 64
This is the answer
integral of below.
ſ√y . e^-y^3
Assuming you're equipped with the error function,
[tex]\mathrm{erf}(x)=\displaystyle\frac2{\sqrt\pi}\int_0^x e^{-u^2}\,\mathrm du[/tex]
whose derivative is
[tex]\dfrac{\mathrm d}{\mathrm dx}\mathrm{erf}(x)=\dfrac2{\sqrt\pi}e^{-x^2}[/tex]
by substituting x = √y, so that x ² = y and 2x dx = dy, we have
[tex]\displastyle\int\sqrt y e^{-y^3}\,\mathrm dy=\int 2x^2 e^{-x^6}\,\mathrm dx[/tex]
Then if u = x ³ and du = 3x ² dx, we have
[tex]\displaystyle\int\sqrt y e^{-y^3}\,\mathrm dy=\int\frac23 e^{-u^2}\,\mathrm du[/tex]
[tex]\displaystyle\int\sqrt y e^{-y^3}\,\mathrm dy=\frac{\sqrt\pi}3\mathrm{erf}(u)+C[/tex]
[tex]\displaystyle\int\sqrt y e^{-y^3}\,\mathrm dy=\frac{\sqrt\pi}3\mathrm{erf}(x^3)+C[/tex]
[tex]\displaystyle\int\sqrt y e^{-y^3}\,\mathrm dy=\boxed{\frac{\sqrt\pi}3\mathrm{erf}\left(y^{\frac32}\right)+C}[/tex]
If you're not familiar with the error function, unfortunately there is no elementary antiderivative...
Jared ran four days this
week. He ran a total of 24.2
miles. If he ran about the
same distance every time,
how many miles did he run
each day?
Answer:
6.05
Step-by-step explanation:
24.2 / 4 = 6.05 ^^
hope this helps!
Based on a study by Dr. P. Sorita Soni at Indiana University, assume that eye colors in the United States are distributed as follows: 40% brown, 35% blue, 12% green, 7% gray, 6% hazel. If three people are randomly selected, what is the probability that one will have brown eyes, one will have gray eyes, and one will have green eyes (with replacement)
Answer
0.00336
Step-by-step explanation:
Given :
P(Brown), P(Br) = 0.4
P(Blue) = P(b= 0.35
P(green,) = P(g) = 0.12
P(gray), P(Gr) = 0.07
If 3 individuals are selected, the probability that one has brown eye, 1 has Grey and one has green.
Since the probabilities are independent :
P(Br) * P(Gr) * P( g)
0.3 * 0.07 * 0.12
= 0.00336
A student was interested in studying the relationship between burping and eating at BCs. The hypothesis was that more expensive meals would correlate with more burping. They watched BCs patrons for two weeks and recorded the cost of meals and how often people burped while eating. In this experiment, the independent variable was _________, and they should present the data as a__________ .
a. Burping frequency,
b. Bar graph with error bars
c. Burping frequency
d. Scatter plot with a trendline
Answer:
Price of the meals
Scatter plot with a trendline
Step-by-step explanation:
None of the provided options are correct. The independent variable was Price of the meals, and they should present the data as a Scatter plot with a trendline. The Price of the meal is the independent variable because it does not depend on any other variable and is instead the cause of the burping frequency which would be the dependent variable in this scenario. The Scatter plot would allow you to mark each individual's burping frequency on the same prices for the meal, since you would most likely have more than one value of burping frequency for the same priced meal.
The table below represents a proportional relationship
х
3
4
5
5
6
у
0.375
0.5
0.625
0.75
True
Or False
Find the equation of the line with slope m=4/5 that contains the point (10,11).
Answer:
Y=4/5x+3
Step-by-step explanation:
Y–11=4/5(x–10)
Y–11=4/5x–8
Y=4/5x+3
what percent of 77 is 774
Answer:
9.95%
Step-by-step explanation:
Two angles of a triangle have the same measure and the third one is 3 degrees greater than the measure of each of the other two. Find the measure of the LARGEST angle in the triangle.
9514 1404 393
Answer:
62°
Step-by-step explanation:
If x is the largest angle, the sum of angles in the triangle is ...
x + (x -3) +(x -3) = 180
3x -6 = 180 . . . . . simplify
x -2 = 60 . . . . . . . divide by 3
x = 62 . . . . . . . . . .add 2
The largest angle is 62°.
Frank has a box of pens. The box contains 6 blue pens, 8 black pens and 3 red pens. Some more blue pens are added to the box. The probability of selecting a blue pen is now 1/2. How many blue pens were added to the box?
Answer: umm i calculated about 10??
Step-by-step explanation:
Richie and bethany play basketball and practice shooting free throws after school. During one practice session, Richie attempted 15 free throws and made 12 of them.
a. bethany made eight free throws for every 3 that she missed. Did bethany do better than richie? how do you know.
Answer:
Bethany did not do better than Richie because her average score was less than his.
Step-by-step explanation:
Average Value
The average or mean value of m successes out of n tries is given by:
[tex]\displaystyle \bar x=\frac{m}{n}[/tex]
During a practice session playing basketball, Richie made m=12 free throws from n=15 attempts. His average score was:
[tex]\displaystyle \bar x=\frac{12}{15}=0.8[/tex]
Bethany made 8 free throws for every 3 that she missed, this means she made 8 out of 11 attempts. Her average score was:
[tex]\displaystyle \bar x=\frac{8}{11}=0.72[/tex]
Bethany did not do better than Richie because her average score was less than his.
The person that did better is Richie. This is because the percentage of free throws made by Richie is higher than that of Bethany.
In order to determine who did better, the percentage of free throws made has to be determined.
The percentage of free throws made by Richie =( 12 / 15) x 100 = 80%
The percentage of free throws made by Bethany = [(8-3) / 8] x 100 = 62.50%
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