Answer:
Step-by-step explanation:
The answer is 3.2510 x 10^-4
A 1050 kg car travels on the freeway at a speed of 33 m/s. What is the cars kinetic energy?
Answer:
571 725
Step-by-step explanation:
Genetic energy formula:m.v²
2
1050.33²=
2
=1050.1089=
2
1 143 450:2=571 725
A spinner has an equal chance of landing on either red, blue, or green. You spin six times. What is the probability that spinner lands on red exactly three times?
What is XZ to the nearest tenth?
7
51°
77
WORK OUT ANGLE BXC.
GIVE A REASON FOR EACH ANGLE YOUR WORK OUT
Answer:
a) Angle XBC = 55° because it is a corresponding angle to 55°
b) angle BXC = 70°
Step-by-step explanation:
ΔXBC is an isosceles triangle because XB = XC
∠XCB = ∠XBC because ΔXBC is an isosceles triangle
∠BXC = 180° - 55° - 55° = 70° because the sum of all the interior angles of a triangle - 180°
Answer:
b) BXC=70
Step-by-step explanation:
a)
Angle XBC = 55° as XY and BD are parallel lines, the interior angles on the same side of a transversal are supplementary hence the same.
b)
Triangle BXC is isosceles when XBC and XCB are both 55°
XBC+XCB+BXC= 180° (sum of angles of triangle)
55°+55°+BXC=180°
110°+BXC= 180°
BXC= 180°-110°
BXC= 70°
ln cos2y + xy + 5x² = 5, find dy/dx. HELP PLEASE!!!
What are the sine, cosine, and tangent ratios for angle a?
Answer:
sine: 5:13
cosine: 12:13
tangent: 5:12
Step-by-step explanation:
sine is opposite:hypotenuse
cosine is adjacent:hypotenuse
tangent is opposite:adjacent
find the solution to the system of equations y=1/2x +1 y=-x+1
Answer:
x=0, y=1
Step-by-step explanation:
help please! include how you did it and i will give you brainilist.
Answer: A' (3, 6)
Step-by-step explanation: It is given that the point at is at the coordinate of (1, 2). In this coordinate, 1 represents the x-coordinate while 2 represents the y-coordinate. All you have to do is plug the values of x and y into (x+2)(y+4); so, it will look like this, (1+2)(2+4). Therefore, the new x-coordinate is 3 and the new y-coordinate is 6, so A'(3, 6).
At a game show, there are 7 people (including you and your friend) in the front
row.
The host randomly chooses 3 people from the front row to be contestants.
The order in which they are chosen does not matter.
There are 7C3 = 35 total ways to choose the 3 contestants.
What is the probability that you and your friend are both chosen?
ОА 2/3
O B.
3/35
OC.
2/35
O D.
5/35
Answer:
There are a total of 5/35 ways that you and your friend are both chosen
Step-by-step explanation:
ap3x
A new route for bicycling to work decreased Herschel's riding time by 14%. If the old route took 32 minutes, how long will the new route take? Round your answer to the nearest minute.
Answer:
4.48
Step-by-step explanation:
Herschel took 27.52 minutes in riding cycle in new route.
What is percentage?Percentage is defined as a given part or amount in every hundred. It is a fraction with 100 as the denominator and is represented by the symbol "%".
Given that, a new route for bicycling to work decreased Herschel's riding time by 14%.
The old route took 32 minutes
Time taken by new route = 32-14% of 32
= 32-14/100 ×32
= 32-0.14×32
= 32-4.48
= 27.52 minutes
Therefore, it takes 27.52 minutes in the new route.
To learn more about the percentage visit:
brainly.com/question/24159063.
#SPJ3
Find the sum of the complex numbers.
(3 + 3i) + (8 + 7i)
Answer:
21i² + 45i + 24
Step-by-step explanation:
Answer:
-5-4i
Step-by-step explanation:
A farmer feeds a cow 9300 milligrams of an antibiotic. Every hour, 50% of the drug breaks down in the cow's body. How much will be left in 6 hours?
9514 1404 393
Answer:
about 145.3 mg
Step-by-step explanation:
If half breaks down in the hour, then half remains. That is, each hour the amount remaining is multiplied by 1/2. The remainder after 6 hours is ...
(9300 mg)(1/2)^6 = 145.3125 gm
About 145.3 mg will be left after 6 hours.
Choose the mathematical sentence that most accurately expresses the
information in the problem, and would be most helpful in solving it.
There are 25 milligrams of sodium per serving in a bag of potato chips. In
that bag there are 5 servings. How many milligrams of sodium are there in the
whole bag?
A. S+5 = 25
B. 5 : s= 25
C. S-5 = 25
D. s = 5(25)
O E. S : 5 = 25
O F. S = 25+ 5
Answer:
[tex]s = 5 * 25[/tex]
Step-by-step explanation:
Given
[tex]Servings = 5[/tex]
[tex]Sodium/Serving = 25mg[/tex]
Required
The number of sodium mg in the bag
This is calculated as:
[tex]s = Servings * Sodium/Serving[/tex]
[tex]s = 5 * 25[/tex]
Hence: (D) is correct
what is 10-78^2 pls wait 5 mins befoer answering
Answer:
-6074
Step-by-step explanation:
Ms. Namgung's electric hedge trimmer has a 10-foot cord. Each of her extension cords is 50 feet long. The farthest hedge is 40 yards from the electrical outlet. How many extension cords will Ms. Namgung use to trim all the hedges? Explain.
Answer: She will need 3 extension cords.
Step-by-step explanation:
If the farthest hedge is 40 yards away, that means it is 120 feet away because 1 yard equals 3 feet. If the cord on her trimmer is 10 feet and her extension cords are 50 feet long, 10+50+50+50= 160 feet. This means she would need 3 extension cords. 2 extension cords would not be long enough.
Suppose Wesley is a marine biologist who is interested in the relationship between the age and the size of male Dungeness crabs. Wesley collects data on 1,000 crabs and uses the data to develop the following least-squares regression line where X is the age of the crab in months and Yˆ is the predicted value of Y, the size of the male crab in cm. Yˆ=9.1411+0.4775X What is the value of Yˆ when a male crab is 23.2417 months old?
Answer:
[tex]Y = 20.239[/tex]
Step-by-step explanation:
Given
[tex]Y = 9.1411 + 0.4775X[/tex]
Required
The predicted value of [tex]Y[/tex] when [tex]X = 23.2417[/tex]
To do this, we substitute [tex]X = 23.2417[/tex] in the given equation
So, we have:
[tex]Y = 9.1411 + 0.4775X[/tex]
[tex]Y = 9.1411 + 0.4775 * 23.2417[/tex]
[tex]Y = 9.1411 + 11.0979[/tex]
[tex]Y = 20.239[/tex]
Determine which solution is correct for solving StartFraction 5 over 7 EndFraction y = 6using reciprocals.
Given:
The equation is:
[tex]\dfrac{5}{7}y=6[/tex]
To find:
The solution of the given equation by using the reciprocals.
Solution:
We have,
[tex]\dfrac{5}{7}y=6[/tex]
We need to multiply both sides by the reciprocal of [tex]\dfrac{5}{7}[/tex] to isolate the variable x.
The reciprocal of [tex]\dfrac{5}{7}[/tex] is [tex]\dfrac{7}{5}[/tex]. So, multiplying both sides by [tex]\dfrac{7}{5}[/tex], we get
[tex]\dfrac{5}{7}y\times \dfrac{7}{5}=6\times \dfrac{7}{5}[/tex]
[tex]y=\dfrac{42}{5}[/tex]
[tex]y=8.4[/tex]
Therefore, the value of y is 8.4.
Answer:
42/5
Step-by-step explanation:
If BD = 8x - 27 and EC = 2x + 33, find BD.
Explain the cyclin-dependent regulation
cell cycle
Cyclins drive the events of the cell cycle by partnering with a family of enzymes called the cyclin-dependent kinases (Cdks). A lone Cdk is inactive, but the binding of a cyclin activates it, making it a functional enzyme and allowing it to modify target proteins.
hope this helps!
Answer:
Cyclins drive the events of the cell cycle by partnering with a family of enzymes called the cyclin-dependent kinases (Cdks). A lone Cdk is inactive, but the binding of a cyclin activates it, making it a functional enzyme and allowing it to modify target proteins.
Step-by-step explanation:
PLEASE ANSWER ASAP FOR BRAINLEST SUPER EASY QUESTION!!!!!!!!!!!!!!!!!!!!
what is 26.75 rounded to the nearest 10th? Show your work/explain.
Answer:
26.8
Step-by-step explanation:
you round up 5 and make the 7 an 8
Answer:
26.8
Step-by-step explanation:
The number after the decimal is the "tenth" and any number that is five or larger, you would round up. The number to the right of the tenth is 0.05 which is equal to five so you would round up. Hence the answer 26.8
In a particular year, 68% of online courses taught at a system of community colleges were taught by full-time faculty. To test if 68% also represents a particular state's percent for full-time faculty teaching the online classes, a particular community college from that state was randomly selected for comparison. In that same year, 32 of the 44 online courses at this particular community college were taught by full-time faculty.
Conduct a hypothesis test at the 5% level to determine if 68% represents the state in question.
Answer:
The p-value of the test is 0.5028>0.05, which means that there is sufficient evidence to determine that 68% represents the state in question.
Step-by-step explanation:
Test if 68% represents the state in question.
This means that at the null hypothesis, we test if the proportion is 68%, that is:
[tex]H_0: p = 0.68[/tex]
At the alternate hypothesis, we test if the proportion is different of 68%, that is:
[tex]H_a: p \neq 0.68[/tex]
The test statistic is:
[tex]z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]
In which X is the sample mean, [tex]\mu[/tex] is the value tested at the null hypothesis, [tex]\sigma[/tex] is the standard deviation and n is the size of the sample.
0.68 is tested at the null hypothesis:
This means that [tex]\mu = 0.68, \sigma = \sqrt{0.68*0.32}[/tex]
32 of the 44 online courses at this particular community college were taught by full-time faculty.
This means that [tex]n = 44, X = \frac{32}{44} = 0.7273[/tex]
Test statistic:
[tex]z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]
[tex]z = \frac{0.7273 - 0.68}{\frac{\sqrt{0.68*0.32}}{\sqrt{44}}}[/tex]
[tex]z = 0.67[/tex]
P-value of the test and decision:
The p-value of the test is the probability of finding a sample proportion differing by the population proportion by at least 0.7273 - 0.68 = 0.0473, which is P(|z| > 0.67), which is 2 multiplied by the p-value of z = -0.67.
Looking at the z-table, z = -0.67 has a p-value of 0.2514
2*0.2514 = 0.5028
The p-value of the test is 0.5028>0.05, which means that there is sufficient evidence to determine that 68% represents the state in question.
what is the value of y when
-5= y-7 over 9
Answer:
I love algebra anyways
the ans is in the picture with the steps
(hope it helps can i plz have brainlist :D hehe)
Step-by-step explanation:
Which fraction is represented by the blue portion of the picture?
A. 5/3
B. 1/2
C. 5/8
D. 3/8
E. 2/3
F. 3/5
NO LINKS
Help me please!! please
Answer: With the help of the internet, I've come to the conclusion that √5/3 is irrational. I might be wrong though. Hope this helps.
Step-by-step explanation:
help plz it due in an hour
Answer:
4√3/3
Step-by-step explanation:
This is a 30,60,90 triangle. Therefore, small side (X) is equal to 4/√3 or X√3. In this case, it is 4/√3. This is equal to 4/√3 times √3/√3. This means the answer will be 4√3/3. Therefore, X=4√3/3
If this helps please mark as brainliest
the probabiliity of getting exactly one tail is?
Answer:
50%
Step-by-step explanation:
assuming you are talking about one coin flip (because you didn't specify) you have a 50% chance to land on tails
Find the lateral area of the cylinder to the nearest tenth.
9 cm
19 cm
Not drawn to scale
Оа
2
1046.2 cm
Ob
2
664.4 cm
ос
2
537.2 cm
Od
2
1201.
Answer:
Lateral surface area is 847.8 centimeters^2
Step-by-step explanation:
The formula for determining the lateral surface area of a cylinder is expressed as
Lateral surface area = 2πrh
Where
r = radius of the cylinder
h = the height of the cylinder
From the information given,
r = 9 centimeters
h = 15 centimeters
π = 3.14
Lateral surface area = 2 × 3.14 × 9 × 15 = 847.8 centimeters^2
Please give me Brainliest and rate, like Thank you!
There are 3 answers FYI.
Answer:
cool i think there are 4 questons
Step-by-step explanation:
zero of the polynomial p (x) =3x +4 is
Answer:
4
Step-by-step explanation:
Substitute by 0 in the function
Step-by-step explanation:
p(x) = 3x + 4
p(0) = 3(0) +
p(0) = 0 + 4 => 4 Ans.
If I earned $15 babysitting, I would deposit (or add) $15 to the previous balance.
If I bought a new sweatshirt for $42.66, I would withdraw (or subtract) $42.66 from the previous balance.
If transferred $100, I would subtract $100 from the account it is leaving and add $100 to the account it is going to.
Answer:
57 dollars and 66 cents will be subtracted from the depositeand get the answer of 157.66
Step-by-step explanation: