Is the following number rational or irrational?
0.3
0.9
Choose 1 answer:
A
Rational
B
Irrational
Answer:
A
Step-by-step explanation:
24. Sam, Sonny and Sal are camping in their tents. If the distance between Sam and
Sonny is 153ft, the distance Sam and Sal is 201ft, and the distance between Sonny
and Sal is 175ft, what is the angle of Sonny's line of sight to both Sam and Sal to the
nearest whole degree?
a. 25°
b. 75°
c. 57°
d. 123°
Answer:
Step-by-step explanation:
Answer:
b. 75°
Step-by-step explanation:
Draw a triangle. Write a person name and a point name (a letter) at each vertex: Sam A, Sonny B, and Sal C at the vertices.
Write the distances as AB = c = 153 ft; AC = b = 201 ft; BC = a = 175 ft.
We are looking for angle B.
Since we have a triangle with three side lengths and no angle measures, we use the Law of Cosines.
[tex] b^2 = a^2 + c^2 - 2ac \cos B [/tex]
[tex] 201^2 = 175^2 + 153^2 - 2(175)(153) \cos B [/tex]
[tex] 40401 = 30635 + 23409 - 53550 \cos B [/tex]
[tex] -53550 \cos B = -13643 [/tex]
[tex] \cos B = \dfrac{-13643}{-53550} [/tex]
[tex] \cos B = 0.254771242 [/tex]
[tex] B = \cos^{-1} 0.254771242 [/tex]
[tex] B = 75^\circ [/tex]
Answer: b. 75°
Evaluate this function at x = 2: f(x)= 3x + 20 *
a.) 23
b.) 36
c.) 26
d.) 30
answer soon pls tyyy!!
Answer:
26
Step-by-step explanation:
Fitst, you substitute
f(2) = 3(2) + 20
f(2) = 6 + 20
f(2) = 26
your answer is 26
Answer:
c.) 26
Step-by-step explanation:
f(2) = 3(2) + 20
f(2) = 6 + 20
f(2) = 26
A train left a station at 8:13 a.m. arriving at its destination at 4:52 p.m. If the stations are 527.65 miles apart, calculate the average
speed at which the train traveled.
A. 71 miles/hour
B. 69 miles/hour
C. 51 miles/hour
D. 61 miles/hour
9514 1404 393
Answer:
D. 61 mi/h
Step-by-step explanation:
The travel time is 16:52 -8:13 = 8:39 hours, or 8.65 hours. Then the speed is ...
speed = distance/time = 527.65 mi/(8.65 h) = 61 mi/h
_____
Additional comment
It is often convenient to use "military" or "24-hour" time for calculations of time periods that extend over noon or midnight. For this purpose, 12 gets added to the hour number in the afternoon (pm). Of course, 39 minutes is 39/60 hours. That is found to be 0.65 hours by performing the division of 39 by 60.
know very hard neeed help . humanity
Answer:
AB = 17 m, AC ≈ 19.2 m
Step-by-step explanation:
Drawing a line from A to the base creates a right triangle
with legs 8 and (25 - 10 ) = 15
Using Pythagoras' identity in the right triangle.
The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is
AB² = 15² + 8² = 225 + 64 = 289 ( take the square root of both sides )
AB = [tex]\sqrt{289}[/tex] = 17 m
------------------------------------
Using Pythagoras' identity i right triangle ABC
AC² = AB² + BC² = 17² + 9² = 289 + 81 = 370 ( take square root of both sides )
AC = [tex]\sqrt{370}[/tex] ≈ 19.2 m ( to 1 dec. place )
please help me answer this question its urgent
Answer:
Step-by-step explanation:
1). [tex]\frac{2}{3}n-\frac{3}{4}n+\frac{1}{6}n+2\frac{2}{9}n[/tex]
= [tex]\frac{2}{3}n-\frac{3}{4}n+\frac{1}{6}n+(2+\frac{2}{9})n[/tex]
= [tex](\frac{2}{3}-\frac{3}{4}+\frac{1}{6})n+(2+\frac{2}{9})n[/tex]
= [tex](\frac{8}{12}-\frac{9}{12}+\frac{2}{12})n+(2+\frac{2}{9})n[/tex]
= [tex]\frac{(8-9+2)}{12}n+(2+\frac{2}{9})n[/tex]
= [tex]\frac{1}{12}n+(2+\frac{2}{9})n[/tex]
= [tex](\frac{1}{12}+2+\frac{2}{9})n[/tex]
= [tex](\frac{3}{36}+\frac{72}{36}+\frac{8}{36})n[/tex]
= [tex]\frac{83}{36}n[/tex]
= [tex]2\frac{11}{36}n[/tex]
2). [tex]\frac{2}{5}g-\frac{1}{6}-g+\frac{3}{10}g-\frac{4}{5}[/tex]
= [tex](\frac{2}{5}-1+\frac{3}{10})g-(\frac{1}{6}+\frac{4}{5})[/tex]
= [tex](\frac{4}{10}-\frac{10}{10}+\frac{3}{10})g-(\frac{5}{30}+ \frac{24}{30})[/tex]
= [tex](\frac{4-10+3}{10})g-(\frac{5+24}{30})[/tex]
= [tex]\frac{-3}{10}g-\frac{29}{30}[/tex]
= [tex]-\frac{3}{10}g-\frac{29}{30}[/tex]
3). [tex]i+6i-\frac{3}{7}i+\frac{1}{3}h+\frac{1}{2}i-h+\frac{1}{4}h[/tex]
= [tex]7i-\frac{3}{7}i+\frac{1}{2}i+\frac{1}{3}h-h+\frac{1}{4}h[/tex]
= [tex](7-\frac{3}{7}+\frac{1}{2})i+(\frac{1}{3}-1+\frac{1}{4})h[/tex]
= [tex](\frac{98}{14} -\frac{6}{14}+\frac{7}{14})i+(\frac{4}{12}-\frac{12}{12}+\frac{3}{12})h[/tex]
= [tex](\frac{98-6+7}{14})i+(\frac{4-12+3}{12})h[/tex]
= [tex]\frac{99}{14}i-\frac{5}{12}h[/tex]
!!I WILL GIVE BRAINLIEST!!
Which value is not in the range of the function? Circle the correct answer.
a. 0
b. 3
c. 4
d. 5
graph is attached above^
3 is not in the range.
What is the range?A function's range is the whole set of potential values that it can have. When we insert an x value into the function, the range is the collection of values that results. Range refers to the y values.
Given a figure in which the function is not differentiable since the graph is broken at (-2, 3) and (2, 4). Since at Y = 3 there is no point in the graph. therefore Y = 3 is not in the range of the function.
Learn more about the range here:
https://brainly.com/question/28135761
#SPJ2
Find mZG The diagram is not to scale.
A spinner has red green blue and orange sections the probability of landing a red is 2/3 and green is 1/12 and on blue is 1/12 what is the probability of landing on orange
PLEASEEE HELPPP !! MARKKK BRAINLIEST!!
POINTS ABC
Find the coordinates of the missing vertex in each parallelogram.
Answer:
The missing coordinate, D = (7, 1)
X
Solve the following two equations. Show all of your
steps in the line paper provided. Be ready to share your
work!
Equation #1: 3x + 6 = x - 24
Equation #2: 10 – 2m
16
Answer:
Equation 1 x=-16
Equation 2 m=-3
Step-by-step explanation:
Equation 1
3x-x=-24-6
2x=-32
x=-32/2
x=-16
Equation 2
-2m=16-10
-2m=6
m=6/-2
m=-3
During batting practice, Lenora hit 60% of the 20 pitches that were thrown to her. What fraction of the pitches thrown did Lenora hit?
Answer:
A 3/5
Step-by-step explanation:Here’s one way to solve this problem.
Write sixty percent as a fraction having a denominator of one hundred.
Now, change sixty-hundredths to an equivalent fraction having a denominator of twenty, the total number of pitches.
Do this by dividing the numerator and the denominator by five.
Then, simplify the fraction twelve-twentieths by dividing the numerator and the denominator by four.
So, Lenora hit three-fifths of the pitches.
A. 3/5
Step-by-step explanation:
i dont have time for explanation but i hope this helps
What is the missing number?
700,000 + 8 +
+ 40,000 = 740,028
Answer:
700,000+ 8+20+ 40,000
Step-by-step explanation:
All you needed to do was line them up and find the missing value. Or add all of the given numbers and subract the answer. Quite simple actually
Answer:
700,000+40,000+ 20+8= 740,028
20 is the missing number
Helppp me plsssss pls
Answer:
a
Step-by-step explanation:
because it goes into negaative so its smaller
Answer:
B
Step-by-step explanation:
Look at the way the arrow points. It has a dot on the -3 meaning it could be equal as well. Since it’s going negative, that chooses the way the inequality faces.
what is the y-intercept is this graph ?
A. 0
B. 2
C. 4
D. 8
Malcolm spent $9.50 on pens, $24 on paper and $11.40 on other supplies for school. He gave the clerk $60.00. How much change should he receive? help asap
Answer:
15.1 $
Step-by-step explanation:
is this triangle congruent?
help!!! it's a circumference problem!
Answer: 69.12
Step-by-step explanation: circumference=2*pi*radius
Answer:
The circumference of the circle is 69.12 m
Step-by-step explanation:
Circumference of a Circle
Given a circle of radius r, the circumference or perimeter of the circle is calculated by the formula:
[tex]C=2\pi\ r[/tex]
The circle shown in the image has a radius of r=11 m, thus the circumference is:
[tex]C=2\pi\ *11[/tex]
[tex]C=22\pi[/tex]
Calculating:
C = 69.12 m
The number of cars sold per month can be modeled by f(x) = 0.04x^3 + 0.2x^2 + 0.5x + 60, where x represents the number of months since March. Let g(x) = f(x) + 30. Which of the following gives the rule for g and the correct explanation of the meaning if the transformation in terms of monthly car sales?
Answer:
0.04x^3+0.2x^2+0.5x+90 vertical shift 30 units up, increase of 30 units per month
Step-by-step explanation:
You don't need an explanation just take the answer.
Mr. Bryan used similar quadrilaterals to make an art wall. Which statement about the quadrilaterals on the wall must be true?
They have corresponding sides that are congruent.
They are the same size but different shapes.
They have corresponding angles that are congruent.
They are the same size and shape.
Solve the equation.
5^3x-1 = 5^5
x=?
Answer:
x= 3126/125 or x=25.008 or as a mixed number form: x=25 and 1/125
Step-by-step explanation:
isolate the variable by dividing each side by factors that don't contain the variable.
x=25
Step-by-step explanation:
evaluate the power 125x=5^5
125=3125
divide both sides by 125
x=25
Lea earns $120 for 15 hours of work as an intern for a civil engineer. Lea earns the same amount for each hour she works.
Answer:
that would be 8 if you divide them
What would x equal? I am very confused.
Answer:
Step-by-step explanation:
So, I forgot the name of how to do it, but basically, the angle outside is equal to the two angles inside.
121=x+69
*solve*
121-69=x
52=x
It would equal 52 degrees
also if you're good at math please help me lol https://brainly.com/question/20754051
Can anyone please help????
Answer:
A. (3,4)
B (4,2)
C (1/2,1/2)
D (1,2 1/2)
E (1 and 3/4, 4 and 1/4)
Step-by-step explanation: coordinates
Can anyone pls help me? I will give you brainliest and 5 stars if you are correct.
Answer:
4 kilograms
Step-by-step explanation:
SIMPLIFY- working on algebra
-x-4x
Answer:
The correct answer is,
[tex] - 5x[/tex]
HELP ITS SUBMITTED IN 5 MINUTES
Answer:
c
Step-by-step explanation:
pie times radius square
Which of the following is a true statement?
Answer:
Step-by-step explanation:
A
x+3y=0 and 12y=-4 equation plz help.
Answer:
[tex]x = 1[/tex] and [tex]y = -\frac{1}{3}[/tex]
Step-by-step explanation:
So we can equate the second equation in terms of y by dividing both sides by 12:
[tex]y = -\frac{1}{3}[/tex]
Let us substitute this into the first equation:
[tex]x + 3y = 0[/tex]
then becomes
[tex]x + 3(-\frac{1}{3} ) = 0[/tex]
which simplifies to
[tex]x - 1 = 0[/tex]
Finally solving for x gives us:
[tex]x = 1[/tex]
Therefore, [tex]x = 1[/tex] and [tex]y = -\frac{1}{3}[/tex]
Hope this helps!
Brainliest please!
Answer:
x=1, y=-1/3
Step-by-step explanation:
x+3y=0
12y=-4
12y=-4
y=-1/3
x+3y=0
x+3(-1/3)=0
x-1=0
x=1
Find the unit rate. 24 cokes cost eight dollars. How much does each coke cost? Please hurry!
Answer:
4 dollars
Step-by-step explanation:
Twenty-four divide by eight is four.
24 divided 8= 4
Sorry I don't have a division sign on my laptop... (hints why I put divided by instead)
Can I have brainliest?
