Step-by-step explanation:
Given
Number of Radio Stations=28
Number of College Radio Stations=12
[tex]required \: probabilty = \frac{number \: of \: college \: radio \: stations}{total \: number \: of \: radio \: stations} [/tex]
Probability=12/28=3/7
Chris needs to buy a $100 graphing calculator for his math class his neighbors will pay him $5 per hour to babysit and father gave him a $10 for mowing the lawn what is the minimum number of hours he will need to babysit for him to buy his calculator.
I need a inequality, the anwser to the inequality and the final anwser
Answer:
18 hours
Step-by-step explanation:
Babysit: $5/hour
One time job: $10
Let x = number of hours.
5x + 10 ≥ 100
5x ≥ 90
x ≥ 18
Answer: 18 hours
The ordered pairs for two points are listed in the table. What is the equation, in slope-intercept form, of the line that contains these points? A. y = x + 1 B. y = -x – 1 C. y = -x + 1 D. y = x – 1
X Y
1 -2
4 -5
Answer:
B. y = -x – 1
Step-by-step explanation:
calculate slope =
y2-y1 = -5- (-2) = -3
x2-x1 = 4 - 1 = 3
m (slope) = -3/3 = -1
using points (1,-2) for calculating y-intercept:
y = mx + b
-2 = -1(1) + b
-2 = -1 + b
-1 = b
b = -1
answer is B y= -x - 1
X: 2,4,6,8,10
y: 1,3,5,6,9
what is the domain and range?
Check the picture below.
What is the approximate value of q in the equation below? q log subscript 2 baseline 6 = 2 q 2
The approximate value of q in the equation below is 0.584
Logarithmic functionsGiven the log expression as shown below;
q + log2(6) = 2q + 2
Collect the like terms
q - 2q = 2 - log(2)6
-q = 2 - log(2)6
-q = log(2)4 - log(2)6
-q = 2 -2.584
-q = -0.584
q = 0.584
Hence the approximate value of q in the equation below is 0.584
Learn more on logarithm here: https://brainly.com/question/237321
SCREEEEEEEEEEEEEEEEEEEEEE-
Choose two values, a and b, each between 8 and 15. Show how to use the identity a3 + b3 = (a + b)(a2 − ab + b2) to calculate the sum of the cubes of your numbers without using a calculator. I chose a = 9 and b = 14
I'm stuck :(
Let's plug in a = 9 and b = 14
[tex]a^3 + b^3 = (a+b)(a^2 - ab + b^2)\\\\9^3 + 14^3 = (9+14)(9^2 - 9*14 + 14^2)\\\\9^3 + 14^3 = (9+14)(81 -126 + 196)\\\\9^3 + 14^3 = (23)(151)\\\\9^3 + 14^3 = 3473\\\\[/tex]
It is possible to calculate the terms on the right hand side without a calculator. You can either memorize things, do mental math, or use pencil/paper to do the scratch work.
As a way to verify things,
[tex]9^3 = 9*9*9 = 729\\\\14^3 = 14*14*14 = 2744\\\\9^3+14^3 = 729+2744 = 3473\\\\\text{Therefore, } 9^3 + 14^3 = 3473 \text{ has been proven correct}\\\\[/tex]
100 POINTS PLS HURRY I WILL ALSO MARK BRAINLIEST!!!!!
What is the shape of the cross section of the figure that is parallel to the rectangular base?
A. a parallelogram that is not a rectangle
B. a rectangle
C. a triangle that must have same dimensions as one of the faces
D. a triangle that does not have the same dimensions as one of the faces
Answer:
B. a rectangle
Step-by-step explanation:
A cross section is the new face you see when you slice through a 3D figure. So if you slice a rectangular pyramid parallel to the base, you get a smaller rectangle as the cross section. Similarly, if you slice parallel to a triangular base then your cross section will be a triangle.
Hope this helps and God bless!
Step-by-step explanation:
I think Its D because In the rectangular base its not equal sides like a square so it would be more be like sides that are not perpendicular.
hope it helps
I need help with this
Write it as a whole number, fraction or improper faction only
Answer:
3/4
Step-by-step explanation:
HELP HELP HELP HELP PLSSSSSSSSSsss
what percent of 30 is 27?
Answer:
the answer is 90%, 90% of 30 is 27
The athletic department wants to paint the school’s mascot logo on the gym wall. They start by painting a solid blue circle on the wall. The circle has an area of 78.5 ft^2.`What is the radius of the circle?
Answer:
divide the area by 2 to get answer
What is your speed if you can run a distance of 500 meters in 3 minutes.
*pls give me a solution*
Answer:
6.2 miles per hour
1 min = 60 seconds
3 min = 180 seconds
HELPP i dont under stand this
Answer:
your answer is 50
( ◜‿◝ )♡
hope this will help you!!
Solve the Equation sec (theta)=2 for 0<2.
θ
=
2
π
3
+
2
π
n
,
4
π
3
+
2
π
n
, for any integer
n
[tex]~~~\sec \theta = 2\\\\\implies (\cos \theta)^{-1} = 2\\\\\implies \cos \theta =\dfrac 12\\ \\\implies \theta = 2n\pi \pm \dfrac{\pi}3[/tex]
If Billy has a 116 foot long string of yarn, which is 44 feet longer than the string of yarn that Sally has, then how long is Sally's string?
Pls help
Answer:
Sally's string is 72 feet long.
Step-by-step explanation:
You just do 116-44= 72 feet!
Hope this helps!
2. To solve this system using the addition method, you would need to multiply the first equation
by what number in order for the y's to add out? 3x-y=3 -2x + 2y = 6
If −x−10y=2 is a true equation, what would be the value of 3x+30y?
Answer:
-6
Step-by-step explanation:
We are given that -x-10y=2 is a true equation so by multiplication property of equality, we can multiply everything by -3 on both sides. This gives us 3x+10y=-6
Each expression has been simplified incorrectly. Explain the mistake that occurred ,and then make the correction.
(-2×7)³=8×7³
Answer:
Step-by-step explanation:
Remarks
The answer given is pretty close to being correct. The 8 is correct -- that is 2^3 power.
The problem is in the minus sign. Think of it as (-1)^3
(-1)^3 = -1 * -1 * -1.
There are 3 minuses there. 2 of them will make plus 1. The third one will change the result to - 1.
Answer: 8 should be -8
The two rectangles below are similar. Which ratio will help to find the value of the missing side of the rectangle? A 2.1/6.3=8.7/X B 8.7/X=6.1/2.1 C 6.3/8.7=2.1/X D 6.3/8.7=X/2.1 31 POINTS WILL GIVE BRAIN LIST IF ITS IS RIGHT
Answer:
A) 2.1/6.3 = 8.7/X
Step-by-step explanation:
If two rectangles are similar, the ratio of the two shorter sides should equal the ratio of the two longer sides.
The two shorter sides are 2.1 cm and 6.3 cm
The two longer sides are 8.7 cm and X.
Therefore, as ratios:
2.1 : 6.3 = 8.7 : X
⇒ 2.1/6.3 = 8.7/X
Answer:
answer c Step-by-step explanation:
whats 1753x87694-463684=
help please
Answer:
65569898
Step-by-step explanation:
1753x87694=66033582
66033582-463684=65569898
which one is greater than 0
Answer:
My guess is A
Step-by-step explanation:
-We see as C and B are both negitive
-D is on the zero Y line
-A is fully 2 postive numbers
A would be the largest of them all and greater than 0!
Pls help no wrong answers
Answer:
[tex]x\sqrt{2} = c[/tex]
Step-by-step explanation:
The Pythagorean theorem tells us that [tex]a^2+b^2=c^2[/tex], where a and b are the legs of a right triangle. If the length of each leg is x, we know by applying the theorem that [tex]x^2+x^2=c^2[/tex], so [tex]2x^2=c^2[/tex]. Applying the square root on both sides we get [tex]x\sqrt{2} = c[/tex]
how can i get 40 for the numbers 5,4,3,2,1
Answer:
5x4=20
20x2=40
Step-by-step explanation:
Answer:
4 * 5 * 2 + 3 - 2 - 1
Step-by-step explanation:
remember pemdas
4 * 5 * 2 + 3 - 2 - 1 = 40
jane can do a job in 3 hours, while gary can do the same job in 2 hours. if jane works alone for an hour before gary helps her how long will it take them to finish the job together
Answer: 2hrs?
Step-by-step explanation: 3-2=1+1 hour she took alone = 2hrs
Answer:
3 hours as Jane will take 1 hour before Gary and Gary will work for 2 hours. I think
I need help ASAP please!!!!!!
Answer:
d
Step-by-step explanation:
surface area of cylinder=2πr(r+h)
2*3.14*4(4+7)
25.12*11
276.3in²
Answer:
Step-by-step explanation:
2πrh+2πr^2 is the formula for finding the surface area of a cylinder.
Since the question said to use 3.14 for pi,
2 * 3.14 * 4* 7 + 2*3.14*16
= 175.84 + 100.48
= 276.32 in^2
So, the answer is d, 276.3 (rounded to 1 decimal place)
Solve each equation and show all work plis 115 = -6k - 5
Answer:
Answer: k = - 20
Step-by-step explanation:
Solution
115 = -6k - 5 Add 5 to both sides
115+5 = - 6k - 5+5 Combine
120 = - 6k Divide by - 6
120/-6 = -6k/-6
-20 = k
Answer: -20
Step-by-step explanation:115 = -6k-5
Add5 to both sides
120= -6k
Divide both sides by 6
20= -k
K = -20
PLS HELP ME I NEED THIS ANSWER ASAP 20 POINTS!
1.Two numbers are divided and the quotient is positive. If one number is negative, what is true of the other number?
It could be positive or negative.
It is positive.
It is 0.
It is negative.
2.If 34 x 27 = 918, which of the following is true?
918 ÷ (-34) = 27
-918 ÷ 34 = -27
-918 ÷ 27 = 34
918 ÷ 27 = -34
3. Dividing by a negative number will give a negative quotient.
True
False
Answers:
1: Option B: It is positve
2: Option B: -918 ÷ 34 = -27
3: Option B: False
( if the questions context is ONLY talking about dividing positives by a negative then its true, else if they are talking about ANY circumstance, even if negatives are divided by a negative then its false )
Step-by-step explanation:
For question 3:
When you divide a negative number by a positive number then the quotient is negative. When you divide a positive number by a negative number then the quotient is also negative. When you divide two negative numbers then the quotient is positive. The same rules hold true for multiplication.
Hope this helped :)
Find the area of the regular polygon
Answer:
891.75 sq.ft is the area of the polygon
Step-by-step explanation:
9.2^2 + 10^2= 184.64
√184.64= 13.59 feet
area of regular octagon=A=2(1+√ 2)a^2
A= 2(1+√2)13.59^2
A=891.75 sq.ft(approx)
two robbers left a jewelry store at the same time. one robber stole 9 diamonds and 3 gold earrings worth a total of $7500. the second robber stole 5 diamonds and 8 gold earrings worth a total of $6700. what is each diamond worth? what is each earrings worth?
Answer: diamond is 700 Earring is 400
Step-by-step explanation:
9D + 3G = 7500
5D + 8G = 6700
G =( 7500 - 9D) /3
Which statement explains the type of function that is represented by the equation
y = 2* + 1?
А The function is linear because it contains only one term.
В The function is linear because it is in slope-intercept form.
с The function is nonlinear because the variable is an exponent.
D
The function is nonlinear because it contains more than one term.
Answer:
C
Step-by-step explanation:
The function has a variable that will make the graph curve up.
How many ways can eight different cans of soup be displayed in a row on a shelf?
Answer:
you can stack them
Step-by-step explanation:
this a wierd question