Answer:
20
Step-by-step explanation:
y = k/x .... y varies inversely with x
16 = k/30 ... x=30 when y=16
k = 30*16 = 480
24 = 480/x ... when y=24
x = 480/24 = 20
I am bad at graphs, please help
find the value for x y and z
Answer:
All triangles add up to 180 degrees so...
180 - 43 - 59 = 78 degrees.
So x - 78 degrees.
x and y are supplementary angles so...
180 - 78 = 102.
So y = 102.
180 - 102 - 49 = 29 degrees
So z = 29 degrees
Hope this helps!
Pls help ASAP I’ll pay u 30$ cash. App
Answer:
how about no
Step-by-step explanation:
Find the measure of <2.
Answer:
Angle 2 would be 78 degrees because of alternate exterior angle property.
Find volume of figure in terms of x
Answer:
6x^3+3x^2
Step-by-step explanation:
Volume is b*h*w.
So, we have (3x)(x)(2x+1).
Simplifying the parentheses, we get: 3x*x*(2x+1).
3x*x= 3x^2.
Now we can simplify the other parentheses.
3x^2(2x+1) will be 6x^3+3x^2, because (3x^2)(2x)+(3x^2)(1).
Thus, we get 6x^3+3x^2
In ΔFGH, g = 340 cm, f = 240 cm and ∠F=139°. Find all possible values of ∠G, to the nearest degree.
Answer:
No possible triangles
Step-by-step explanation:
Deltamath
MATH PLEASE HELP
Determine the area of the shaded region Determine the perimeter of the outside edges of the shaded figure.
A bag contains 2 red marbles and 3 black marbles. If Abby picks a marble without looking, returns it to the bag, and
a then draws a second marble, what is the probability that both marbles are red? Give the answer as a fraction in
simplest form.
Answer: I think it would be 1/2, 2/2 or 2/5. If i'm wrong then i'm sorry.
What is the value of x?
*36
*72
*108
*144
Answer:
72
Step-by-step explanation:
will give brainliest <3! please help! no fake answers please
Answer:
input 1 output 1 ×7 =7
input 2 output 2 ×7 =14
input 3 output 3 ×7=21
input 4 output 4×7=28
Answers are 7, 14, 21 and 28
What is the value of the expression (−2 4/5)÷(−1.4)
Answer:
2
Step-by-step explanation:
What is the value of x in the equation 4(2x + 12) = 0?
−8
−6
6
8
Answer:
-6
Step-by-step explanation:
4(2x+12)=0
8x+48=0
8x=-48
x=-6
What are the center and radius of a circle whose equation is:
(x−A)2+(y−B)2=C
Question options:
a)
Center: (−A,−B), radius = C
b)
Center: (−A,−B), radius =C −−√
c)
Center: (A, B), radius = C
d)
Center: (A, B), radius =C −−√
Answer:
d)
Step-by-step explanation:
Equation of circle with center at point (h, k) and radius, r.
[tex] (x - h)^2 + (y - k)^2 = r^2 [/tex]
This problem:
(x − A)^2 + (y − B)^2 = C
The center is (A, B).
The radius is sqrt(C).
Answer: d)
HELP PLEASEEE!!!! SOMEONE ACTUALLY HELP ME IM BEGGING YOU PLS SHOW YOUR WORK ITS URGENT HURRY PLEASE PLEASE PLEASE
Answer: c
Step-by-step explanation:
An automobile manufacturer has developed a new compact automobile. A random sample of 64 of the new automobiles showed that the automobiles had a sample mean mileage of 28.75 miles per gallon and a sample standard deviation of 3.4 miles per gallon. a) Find the 95% confidence interval for the population mean mileage, and state your conclusion. b) Find the 98% confidence interval for the population mean mileage, and state your conclusion.
Answer:
The 95% confidence interval for the population mean mileage is
(27.917, 29.593)
The 98% confidence interval for the population mean mileage
(27.737, 29.762)
Step-by-step explanation:
Step(i):-
Given that the random sample size 'n' = 64
Given that the mean of sample x⁻ = 28.75miles
Given that the standard deviation of the sample (S) = 3.4 miles
Degrees of freedom = n-1 = 64-1 =63
t₀.₀₅ = 1.9983
Step(ii):-
95% confidence interval for the population mean mileage is determined by
[tex](x^{-} - t_{0.05} \frac{S}{\sqrt{n} } , x^{-} + t_{0.05} \frac{S}{\sqrt{n} })[/tex]
[tex](28.75-1.99\frac{3.4}{\sqrt{64} },28.75 + 1.99 \frac{3.4}{\sqrt{64} } )[/tex]
(28.75 - 0.845 , 28.75 + 0.845)
(27.917 , 29.593)
Step(iii):-
98% confidence interval for the population mean mileage is determined by
[tex](x^{-} - t_{0.02} \frac{S}{\sqrt{n} } , x^{-} + t_{0.02} \frac{S}{\sqrt{n} })[/tex]
[tex](28.75-2.3824\frac{3.4}{\sqrt{64} },28.75 + 2.3824 \frac{3.4}{\sqrt{64} } )[/tex]
(28.75 - 1.01252 , 28.75 + 1.01252)
(27.737 , 29.762)
Final answer:-
98% confidence interval for the population mean mileage is
(27.737 , 29.762)
What is the answer pls it’s for a grade
If x = -3 is the only x-intercept of the graph of a quadratic equation, which statement best describes the
discriminant of the equation?
The discriminant is negative.
O The discriminant is -3.
O The discriminant is 0.
The discriminant is positive.
Viewers/AssessmentViewer/Activit..
Answer:
The discriminant is 0
Step-by-step explanation:
If the discriminant of a quadratic equation equals 0, it means 2 identical real roots existed. (x = -3 is the only x-intercept of the graph of a quadratic equation)
Hello, can someone help me with this question?
Answer:
area = 77 m²
Step-by-step explanation:
area = (14 x 3) +(5 x 5) + (5 x 2) = 42 + 25 + 10 = 77 m²
A model car is 7.5 inches long made with a scale of 2 inches = 48 inches. How long is the actual car?
A. 15 ft
B. 20 ft
C. 180 ft
D.360 ft
Answer:
360
Step-by-step explanation:
May somebody please help me and actually not just type nonsense I’ll give Brainlest or whatever u want
Evaluate each expression for the given value(s) of the variables(s).
Answer:
9. [tex] \frac{1}{10,000} = 0.0001 [/tex]
10. [tex] \frac{1}{81} [/tex]
Step-by-step explanation:
9. [tex] x^{-4} [/tex]
Evaluate when x = 10.
Substitute x = 10 into the expression
[tex] 10^{-4} [/tex]
Apply the negative exponent rule ([tex] a^{-n} = \frac{1}{a^n} [/tex])
Thus:
[tex] = \frac{1}{10^4} [/tex]
[tex] = \frac{1}{10^4} = \frac{1}{10,000} = 0.0001 [/tex]
10. [tex] 2a^{-1}b^{-3} [/tex]
Evaluate when a = 6 and b = 3
Substitute
[tex] (2*6^{-1})(3^{-3}) [/tex]
Apply the negative exponent rule
[tex] (2*\frac{1}{6})(\frac{1}{3^3}) [/tex]
[tex] (\frac{2}{6})(\frac{1}{27}) [/tex]
[tex] \frac{2*1}{6*27} [/tex]
[tex] \frac{1}{81} [/tex]
[tex]\huge{ \mathfrak{ \underline{ Answer }\: \: ✓ }}[/tex]
Question : 9plugging the value of x as 10, we get
[tex]\longrightarrow\: \: x {}^{ - 4} [/tex]
[tex]\longrightarrow\: 10 {}^{ - 4} [/tex]
[tex]\longrightarrow \dfrac{1}{10 {}^{4} } [/tex]
[tex] \longrightarrow\dfrac{1}{10000} [/tex]
[tex]\longrightarrow0.0001[/tex]
Question : 10plugging the value of
a as 6b as 3[tex]\longrightarrow2 {a}^{ - 1} b {}^{ - 3} [/tex]
[tex]\longrightarrow2 \times 6 {}^{ - 1} \times 3 {}^{ - 3} [/tex]
[tex]\longrightarrow \dfrac{2}{6 \times 27} [/tex]
[tex]\longrightarrow \dfrac{2}{162} [/tex]
[tex]\longrightarrow \dfrac{1}{81} [/tex]
_____________________________
[tex] \\ \\ \mathrm{ ☠ \: TeeNForeveR \:☠ }[/tex]
Which number rounds to 700 when rounded to the nearest hundred?
Answer:
C.
Step-by-step explanation:
Hope this helps! have a great day!
In 2002 the population of schoolchildren in a city was 90,000. The population decreases at a rate of 5% per year. What will be the population of school children in 2010?
Answer:
40,000 Not sure but i finish unit and got all a's and b's
Step-by-step explanation:
Answer:
59708Step-by-step explanation:
Initial population = 90000Decrease rate = 5% or 0.05 timesTime = 2010 - 2002 = 8 yearsPopulation of children in 2010:
P = 90000*(1 - 0.05)^8 = 59708 (rounded to the whole number)help pledssssssssssssssssssssssss
Alternate exterior angles are congruent which angle forms a pair of alternate exterior angles with angle 2?
Answer:
angle 7
hope it helps...
What is the volume and cubic feet of a rectangular prism with a base of 24 square feet and a height of 16 feet
Answer:
126
Step-by-step explanation:
Tell me what is
YZ+40 =
Answer:
Let's simplify step-by-step.
yz+40
There are no like terms.
Answer: =yz+40
Hope this help :D
please help me with this !!
Answer:
Answer Below V
Step-by-step explanation:
1. They must be adjacent
2. They have to be connected with the line segment Z
7. A sweater that costs $50.00 is on sale for 45% off. What will the sweater cost after the
discount?
Answer:
27.50
Step-by-step explanation:
I'm the one who just commented for you this is what I thought good luck.
Janice has just bought a new pack of levels in her favorite game, Candy Crush. She knows that she can win a new level on the first try 25% of the time, and that whether or not she beats one level on the first try will not have any effect on whether or not she beats a different level on the first try. Janice plays through 4 levels. What is the probability that she beats all 4 levels on the first try
Answer:
0.0039 = 0.39% probability that she beats all 4 levels on the first try.
Step-by-step explanation:
For each level, there are only two possible outcomes. Either she can win the new level on the first try, or she cannot. The probability of winning a level on the first try is independent of any other level. This means that the binomial probability distribution is used to solve this question.
Binomial probability distribution
The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
In which [tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by the following formula.
[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]
And p is the probability of X happening.
She knows that she can win a new level on the first try 25% of the time.
This means that [tex]p = 0.25[/tex]
Janice plays through 4 levels.
This means that [tex]n = 4[/tex]
What is the probability that she beats all 4 levels on the first try?
This is P(X = 4). So
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
[tex]P(X = 4) = C_{4,4}.(0.25)^{4}.(0.75)^{0} = 0.0039[/tex]
0.0039 = 0.39% probability that she beats all 4 levels on the first try.