Answers
Related Questions
Which expression is equivalent to 10x2y + 25x2?
5x2(2y + 5)
5, x, 2, (2, y, + 5)
10x2(y + 25)
10, x, 2, (, y, + 25)
5x2y(5 + 20y)
5, x, 2, y, (5 + 20, y, )
10xy(x + 15y)
Answers
Answer:
12
Step-by-step explanation:
because i said so
Find the value of y.
Answers
Answer:
y = 6
Step-by-step explanation:
This is a special right triangle with angle measures 90° 60° 30°
the side length that sees angle measure 30 is represented with x
the side length that sees angle measure 90 is represented with 2x
and the side length that sees angle measure 60 is represented with x√3
the side length that sees angle measure 90 is given as 4√3 which means 2x = 4√3 divide both sides by 2
x = 2√3 now to find y, we need to multiply this value by √3
2√3 × √3 = 2 × 3
In the following problem, Emily tried to calculate EG. However, she has made a mistake in her work. You need to identify and explain the mistake. Then, you must provide the correct solution.
Answers
Answer:
x = 66
Step-by-step explanation:
Emily's mistake is that part of the line is only x - 6, but she put 6x - 6
The first 6 shouldn't be there.
x - 6 = 72
x = 66
The actual correct answer is:
x = 78
Step-by-step explanation:
Although the explanation above is correct, the answer is wrong. It's not 66 because you are subtracting 6 from x. This means x needs to be 6 above 72.
Here is my step-by-step solution:
x - 6 = 72 <-- Given; Corrected Equation
x - 6 + 6 = 72 + 6 <-- Addition Property of Equality
x = 78 <-- Result from Solution
A sportswriter wishes to see if a football filled with helium travels farther, on average, than a football filled with air. To test this hypothesis, the writer uses 18 male subjects, randomly divided into two groups of 9 subjects each. Group 1 kicks a football filled with helium to the recommended pressure, while Group 2 kicks a football filled with air to the same pressure. The sample mean yardage for Group 1 was barx2 = 30 yards with a standard deviation of s1 = 8 yards. The mean yardage for Group 2 was barx2 = 25 yards with a standard deviation of s2 = 6 yards. Assume that the two groups of kicks are independent. Let μ1 and μ2 represent the mean yardage we would observe for the entire population represented by the volunteers if all members of this population kicked, respectively, a helium-filled football and an air-filled football. Let σ1 and σ2 be the corresponding population standard deviations. Assuming two-sample t procedures are safe to use, what is a 99% confidence interval for μ1 – μ2?
A) 4 ± 7.7 yards.B) 4 ± 11.2 yards.C) 4 ± 4.7 yards.D) 4 ± 6.2 yards.
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Answer:
5 ± 9.74
Step-by-step explanation:
Confidence interval, two - sample, t procedure ;
μ1 - μ2 = (x1 - x2) ± Tcritical*S
S = sqrt[(s1²/n1) + (s2²/n2)]
n1 = 9 ; n2 = 9 ; s1 = 8 ; s2 = 6 ; x1 = 30 ; x2 = 25
S = sqrt[(8^2/9) + (6^2/9)]
S = sqrt[11.111111]
S = 3.333
Tcritical at 99% confidence interval
df = 18 - 2= 16
Tcritical = 2.92
(30 - 25) ± 2.92*(3.333)
5 ± 9.74
is x=5 a solution to the equation 3b+3=38
yes or no
Answers
Answer:
no
Step-by-step explanation:
substitute b with 5
3(5)+3=38
Multiply
15+3=38
Add
it does not equal up
18=38
Answer:
yes Hgggggggggf the centergegge-eghrhtrhhhghgebbgegebeeebbe
What is the range of the relation below?
{(-4,1), (-2,0), (8, -1)}
Answers
Answer:
Range: {-1, 0, 1}
General Formulas and Concepts:
Math
Number LineAlgebra I
Range is the set of y-values that are outputted by function f(x){Set Builder Notation}Step-by-step explanation:
Step 1: Define
[Relation] {(-4, 1), (-2, 0), (8, -1)}
Step 2: Identify
According to the relation, our y-values are 1, 0, and -1. These values would encompass our range.
I took a photo of the question.
Answers
Answer:
f(f(5)) = 11
Step-by-step explanation:
[tex]f(f(5)) \\ from \: the \: table \: f(5) = 9 \\ so \: f(f(5)) = f(9) \\ also \: from \: the \: table f(9) = 11 \\ so \: f(f(5)) = 11[/tex]
I hope that is useful for you
Determine the solution to 8x = 32 that makes the equation true.
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Answer:
4
Step-by-step explanation:
8x=32
x = 4
I will give brainliest please help and explain, I forget how to do this.
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Answer:
I need more context then that but if its simply measured thats about an inch
Step-by-step explanation:
Answer:
1) measure of each ∡ = 120°
2) sum of all exterior angles = 360°
Step-by-step explanation:
1) if this hexagon is 'regular' (meaning all sides and angles have the same measure) then you can divide the total sum (720°) by 6 to get 120°
The formula to find the total sum of interior ∡'s is (n-2)·180 where 'n' is the number of sides
2) the sum of all exterior angles for any polygon is always 360°
Jillian bought 2 3/4 pounds of flour. Victoria bought 1 1/2 times as much as Jillian. How many pounds of flour did Victoria buy?
Answers
Answer: 4.125
Step-by-step explanation:
2+3/4= 2.75
2.75•1.5= 4.125
The amount of a radioactive substance remaining as it decays over time is A = A0(0.5)t/h ,where a represents the final amount
Ao represents the original amount, t represents the number of years, and h represents the half-life of the sibstance.
The half-life of the radioactive isotope carbon-14 is 5,730 years. Approximately how many years will it take a 50-gram mass of
carbon-14 to decay to 5 grams?
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Ao represents the original amount, t represents the number of years, and h represents the half-life of the sibstance.
The half-life of the radioactive isotope carbon-14 is 5,730 years. Approximately how many years will it take a 50-gram mass of
carbon-14 to decay to 5 grams?
Carbon-14 will take 19,035 years to decay to 10 per cent.
What is the time of decay?
A radioactive half-life refers to the amount of time it takes for half of the original isotope to decay.
An exponential decay can be described by the following formula:
[tex]N(t)=N_oe^{-\lambda t}[/tex]
Where:
No = The quantity of the substance that will decay.
N(t) = The quantity that still remains and has not yet decayed after a time t
[tex]\lambda[/tex] = The decay constant.
One important parameter related to radioactive decay is the half-life:
[tex]t_{1/2}=\dfrac{Ln(2)}{\lambda}[/tex]
If we know the value of the half-life, we can calculate the decay constant:
[tex]\lambda =\dfrac{ln(2)}{t_{1/2}}[/tex]
Carbon-14 has a half-life of 5,730 years, thus:
[tex]\lambda =\dfrac{ln(2)}{5730}[/tex]
[tex]\lambda[/tex] = 0.00012097
The equation of the remaining quantity of Carbon-14 is:
[tex]N(t)=N_oe^{-0.00012097t}[/tex]
We need to calculate the time required for the original amount to reach 10%, thus N(t)=0.10No
[tex]0.10N_o=-N_oe^{-0.00012097t}[/tex]
Simplifying:
[tex]0.10=e^{0.00012097t}[/tex]
Taking logarithms:
ln(0.10) = -0.00012097t
Solving for t:
[tex]t=\dfrac{Log0.10}{-0.00012097}[/tex]
t = 19035 years
Carbon-14 will take 19,035 years to decay to 10 per cent.
To know more about decay follow
https://brainly.com/question/25537936
#SPJ2
The area of the missing face is
Answers
Explanation:
A = 108
Any help would be nice
Answers
Hope this helps! Good luck!
Answer:
<CPB
Step-by-step explanation:
Because the rest make obtuse angles or a right angle, only angle CPB is less than 90 degrees.
please help me need answers
Answers
Answer:
I think there is no solution
Step-by-step explanation:
Which expression has the greatest value?
A: -2 x -2 divided by 1/2
B: -2 x -1/2 divided by 2
C: -2 x 1/2 divided by 1/2
D: -2 x 2 divided by 2
Answers
Answer:
A. -2 × -2 divided by 1/2
Step-by-step explanation:
-2 × -2 ÷ 1/2 =8
What is the value of t in the following equation?
Kaitlyn buys 3 T-shirts for $14.95 each. What is the total cost
Answers
Answer: $44.85
Step-by-step explanation:
$14.95x3
the cookie diameter is 14 cm how my much is the radius
Answers
Radius = diameter/2
Radius = 14/2
Radius = 7
two number are in the ratio 5:6 if sum of three number is 132 . find the number.
Answers
I hope this help you
.........
Write the polynomial in standard form. Then name the polynomial based on its degree and number of terms. x+7–4x3
Answers
27
6 boys have a mean age of 10 years.
14 girls have a mean age of 5 years.
Work out the mean age of all 20 children.
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not clear way ..... clear it
15 divided by 2 = 7.5
Please help Me I gotta finish and no lying please. (NO LINKS) Please help mee
Answers
2. A=16 and P=20
3. A=12 and P=15
4 A=25 and P=20
5. A=28 and P=22
6. A=9 and P=20
7. A=14 and P=18
8. A=24 and P=20
9. A=30 and P=22
10. A=21 and P=20
Eight notebooks cost $10. At this rate, how much would 12 notebooks cost?
Answers
Each notebook it’s 1.25 so if u times 1.25 by 12 u get 15 dollars
15) Max has his eye on a new pair of sneakers that cost $120. He decided
he would not purchase the shoes until there was at least a 30% discount.
What was the cost Max was willing to pay for the sneakers?
Answers
A farmer has harvested 1.6 tons of sweet potatoes from one-quarter of an
acre. How many tons will he harvest from one acre
Answers
Answer: there is no pic
Step-by-step explanation:
Answer:
6.4 tons
Step-by-step explanation:
To find the area of a triangle, you can use the expression b × h ÷ 2, where b is the base of the triangle and h is its height. What is the area of a triangle with a base of 6 centimeters and a height of 8 centimeters?
Answers
Answer:
Step-by-step explanation:
½×6×8 = 24 cm²
Ohique earns $750 in the span of 25 days. How many days does he have to work if he wants to earn $1500?
Answers
Answer:
50
Step-by-step explanation:
750+750=1500 so 25+25=50 so the ansewer is 50
Evaluate: 63 + 7 X 4
Answers
Answer:
91
Step-by-step explanation:
Multiplication first, so 7x4 = 28
28+63=91
Answer:
91
Step-by-step explanation:
multiply the numbers
7×4=28
63+28=91
add the numbers
91
real answer or i will report you if you give me a right aswer i will give brainest
Answers
Answer:
0 and the second one
Step-by-step explanation:
integers are whole numbers they are NOT a fraction
Answer:
0, 21/7
Step-by-step explanation:
fraction is not an integer so is square root
and 10^-1 is 0.1 which is not a integer
What happens to the pitch you hear when two sound waves constructively
interfere?
A. It increases due to the Doppler effect.
B. It decreases due to the Doppler effect.
C. The pitch does not change.
D. You hear the pitch of the louder sound.
Answers
Answer: D
Sound waves with higher amplitudes sound louder than sound waves with lower amplitudes. Constructive interference will make a sound louder while destructive interference will make a sound quieter. Two waves that add together may have different frequencies.
7.
Mr. Aamodt bought a new lawn tractor for $3,350.
a.
The state sales tax on the lawn tractor purchase will be 6.5%. How much state
sales tax will Mr. Aamodt pay on the tractor? (2 points)
b.
Mr. Aamodt has applied for a 2-year loan at the bank for $3,350 to pay for
the new lawn tractor. The bank will charge him 8.4% simple interest on the
loan. What amount of interest will Mr. Aamodt pay on the loan? (2 points)
C.
What is the total cost of Mr. Aamodt's new lawn tractor, including the purchase
price, the loan interest, and the sales tax? (2 points)
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Answer:
7. Mister as an umbrella a new lawn tractor for 3035 $0 a the state sales tax the lawn tractor purchase will be 6. 5% how much states sells tax will mr. pay for the tractor two points? mister I can apply for 2 years loan for the bank for new tra