Answer:
15−2(3−2x)=46
Step-by-step explanation:
15−2(3−2x)=46
5.) A six-sided die is rolled 20 times and the results are
recorded as follows: 3 ones, 4 twos, 5 threes, 2 fours, 4
fives, 2 sixes. What is the experimental probability of
rolling a number greater than four? Express your answer
in Fraction, Decimal, and % forms.
Answer:
There is a 30 % probability of getting a number greater than 4.
In fraction it 6/20
In decimal it is 0.3
Step-by-step explanation:
The experimental probability is found out by dividing the total favorable outcomes with the total possible outcomes
P (x= 1) = 3/20= 0.15
P (x= 2) = 4/20= 0.2
P (x= 3) = 5/20= 0.25
P (x= 4) = 2/20= 0.1
P (x= 5) = 4/20= 0.2
P (x= 6) = 2/20= 0.1
Now probability greater than 4 = P (x=5) + P(x=6)
= 4/20 + 2/20= 6/20
= 0.2+ 0.1= 0.3
So multiplying it with 100 we get = 0.3* 100= 30%
There is a 30 % probability of getting a number greater than 4.
Traveling at an average rate of between 40 and 50 miles per hour for 3 to 4 hours, select the best estimate for the distance traveled.
a. 120 miles
b. 160 miles
c. 195 miles
d. 210 miles
Answer:
195 miles
Step-by-step explanation:
This is because it is closer to the avg. 192.5 miles
In the table about plant growth, what constant rate of change occurs? Explain what this rate of change means
in terms of growth. Include measurement labels.
Answer/Step-by-step explanation:
The constant rate of change that occurs can be calculated using the formula, [tex] \frac{y_2 - y_1}{x_2 - x_1} [/tex]
Let any 2 given pair values represent (x, y).
Thus, let's use (3, 3) and (5, 4.5)
Let (3, 3) = (x1, y1)
(5, 4.5) = (x2, y2)
Rate of change = [tex] \frac{4.5 - 3}{5 - 3} = \frac{1.5}{2} [/tex]
Rate of change = 0.75
The rate of change, 0.75, means in terms of growth, the height of the plant increases by 0.75 inches every week.
y=-|x-2|
Please help me
Answer:
y = -|x-2| (*)
2 cases:
case 1: for x≥2 <=> |x-2| = x-2
(*) <=> y = - (x-2)
<=> y = -x+2
<=> x+y = 2
case 2: for x>2 <=> |x-2| = 2-x
(*) <=> y = -(2-x)
<=> y = x-2
<=> x-y = 2
since there are 2 variables but just one equation, we cannot find the exact values of x and y. Instead, we can find some kind of connection between them.
Evaluate 6j+23+kl−3, when j=3, k=7, and l=33
Answer:
[tex]269[/tex]
Step-by-step explanation:
[tex]6j + 23 + kl - 3 = 6(3) + 23 + 7 \times 33 - 3 = 18 + 23 + 231 - 3 = 269[/tex]
8(-5x + 3) use x = 6 how do i do this?
solve for the inverse g(x) = 2x^2-6/9
Answer:f(x)=x2−6x−9 f ( x ) = x 2 - 6 x - 9. Replace f(x) f ( x ) with y y . y=x2−6x−9 y = x 2 - 6 x - 9. Interchange the variables. x=y2−6y−9 x = y 2 - 6 y - 9.
Step-by-step explanation:
Please tell me the answer I need it soon, I do not understand math at all, tutoring doesn’t help me either.
The long way to do this is to have
4*4*4 *4*4*4 *4
so we have 7 copies of '4' multiplied together
Typing this into your calculator leads to
4*4*4 *4*4*4 *4 = 16384
-----------------------------------------------
The shortcut is to use exponents
Writing 4^7 means we have a base of 4 and an exponent of 7.
Saying 4^7 is the same as saying [tex]4^7[/tex]
To enter in your calculator, you would hit the button labeled [tex]x^y[/tex]
So you'll type 4, then the [tex]x^y[/tex] button followed by 7
Your calculator will then show 16384 as a result.
------------------------------------------------
Side note: you could compute all this by hand using pencil & paper, but to me that seems like tedious busy work (so why not use a calculator to be efficient).
Guys, I am taking the SHSAT and I am not confident I don't think I am smart enough to pass. I study like crazy but nothing sticks in my mind and if I don't pass my parents will be disappointed. What do I do?
Answer:
hope this helps
Step-by-step explanation:
my parents are the same way so if you listen to classical music then things will stick in you head and you can draw things to remind you what they mean like if you had a definitions then draw what they mean
Super confused definitely need help on this
Answer:
[tex](x-5)(x+8)=x^2+3x-40[/tex]
Step-by-step explanation:
So we have the expression:
[tex](x-5)(x+8)[/tex]
To multiply, distribute the left to the terms on the right:
[tex]=(x-5)(x)+(x-5)(8)[/tex]
Distribute:
[tex]=(x^2-5x)+(8x-40)[/tex]
Combine like terms:
[tex]=(x^2)+(-5x+8x)+(-40)[/tex]
Simplify:
[tex]=x^2+3x-40[/tex]
Therefore:
[tex](x-5)(x+8)=x^2+3x-40[/tex]
Answer:
Step-by-step explanation:
x^2 + 8x - 5x - 40
x^2 + 3x - 40
Simplify. 6m+7n+5m−3nhow to earn points
Answer:
11m + 4n ...............
Three balls are placed in a row on a thin metal rod through a hole in the center of each ball. the middle ball is touching both of the other balls. the diameter of the balls 3,4, and 5 inches. of the following, which is closest to the greatest possible distance between the center of any two of the balls?
Answer:d
Step-by-step explanation:
The greatest so place the biggest one in the middle so 1.5+5+2=8.5
BK−→− bisects ∠ABC and m∠ABK=28.3∘. Find m∠KBC and m∠ABC.
Answer:
[tex]KBC = 28.3[/tex]
Step-by-step explanation:
Given
ABK = 28.3
Required
Determine KBC and ABC
Since BK is a bisector of ABC, then it divides the angle to ABK and KBC:
Such that
[tex]KBC = ABK[/tex]
Substitute 28.3 for ABK
[tex]KBC = 28.3[/tex]
Also;
[tex]ABC = KBC + ABK[/tex]
Substitute 28.3 for ABK and KBC
[tex]ABC = 28.3 + 28.3[/tex]
[tex]ABC = 56.6[/tex]
Hence;
[tex]KBC = 28.3[/tex] and
Subtract the polynomials. (x2+3x−7)−(3x2−5x+3)
Answer:
-2x^2+8x-10
Step-by-step explanation:
(x^2+3x−7)−(3x^2−5x+3)
Distribute the minus sign
(x^2+3x−7)−3x^2+5x-3
Combine like terms
-2x^2+8x-10
Answer:
[tex] \boxed{ \bold{ \boxed{ \sf{ - 2 {x}^{2} + 8x - 10}}}}[/tex]
Step-by-step explanation:
[tex] \sf{( {x}^{2} + 3x - 7) - (3 {x}^{2} - 5x + 3)}[/tex]
When there is a ( - ) in front of an expression in parentheses, change the sign of each term in the expression. Also, remove the parentheses
⇒[tex] \sf{ {x}^{2} + 3x - 7 - 3 {x}^{2} + 5x - 3}[/tex]
Collect like terms
⇒[tex] \sf{ {x}^{2} - 3 {x}^{2} + 3x + 5x - 7 - 3}[/tex]
⇒[tex] \sf{ - 2 {x}^{2} + 8x - 10}[/tex]
Hope I helped!
Best regards!!
Hey please sorry its three questions thank you.
Please help on the last part did the first two
Step-by-step explanation:
Hope this helps. But I don't know which country are you from and how you are supposed to it. Any way I tried to help.
A local pizza shop has a membership program for frequent buyers. The membership
costs $25 per month and members get a discounted price of $1.50 per slice of pizza.
Aaliyah purchased a membership to this pizza shop. How much would Aaliyah have
to pay the pizza shop if she bought 6 slices of pizza this month? What would be the
monthly cost for a slices of pizza?
Answer:
$34
$26.5
Step-by-step explanation:
Membership cost per month = $25
Price of a slice of pizza for members= $1.50
How much would Aaliyah have
to pay the pizza shop if she bought 6 slices of pizza this month
Total cost of Aaliyah on 6 slices of pizza = membership cost per month + prices of 6 discounted pizza
= $25 + $1.50(6)
= $25 + $9
= $34
What would be the
monthly cost for a slices of pizza
Monthly cost of Aaliyah a slices of pizza = membership cost per month + price of 1 discounted pizza
= $25 + $1.5
= $26.5
Answer:
Monthly cost for 6 slices: 25+1.50(6)=34
Monthly cost for x slices: 25+1.50x
hope this helps
Souta wants to compare the mean of his test scores in French class to the mean absolute deviation. Language Test Scores French Scores 76 62 94 80 He uses the steps below to find both the mean and mean absolute deviation. French Scores Step 1 Add the scores. 76 + 62 + 94 + 80 = 312 Step 2 Divide the sum of the scores by 4. 312 divided by 4 = 78 Step 3 Add the differences between the mean and each score. (76 minus 78) + (62 minus 78) + (94 minus 78) + (80 minus 78) = 0 Step 4 Divide by 4. StartFraction 0 over 4 EndFraction = 0 In which step did Souta make the first error? Step 1 Step 2 Step 3 Step 4
Answer:
Souta made the first error in Step 3
Step-by-step explanation:
In order to find the Mean Absolute Deviation of a data set, you need to find the ABSOLUTE VALUE of the differences between the mean and each score. This means that 76-78 will be |76-78|, or 2.
Only then can you divide by 4. The correct answer should have been
[tex]|76-78|=2\\\\|62-78|=16\\\\|94-78|=16\\\\|80-78|=2[/tex]
[tex]2+2+16+16=36\\\\36\div4=9[/tex]
So 9 is the MAD of this data set.
Hope this helped!
Answer:
the person above me is right make that person the brainlyest
Step-by-step explanation:
Which numbers in Set A = {−7, −4, 2, 14, 21, 34, 42} are elements of both Set B and Set C, shown below? Set B = {even numbers} Set C = {multiples of 7} and Enter answers from smallest to largest THERE ARE TWO QUESTIONS
Answer:
14, 42
Step-by-step explanation:
Set A = {−7, −4, 2, 14, 21, 34, 42}
Set B = {even numbers}
Set C = {multiples of 7}
There is only one question asked
Which numbers in Set A are elements of both Set B and Set C,
We need it to be even and a multiple of 7
14 is even and a multiple of 7 and 42 is even and a multiple of 7
Answer:
[tex]\Huge \boxed{\mathrm{\{ 14, 42\} }}[/tex]
Step-by-step explanation:
[tex]\mathrm{Set \ A = \{-7, -4, 2, 14, 21, 34, 42\} }\\\\\\\mathrm{Set \ B = \{even \ numbers\} } \\\\\\\mathrm{Set \ C = \{multiples \ of \ 7\}}[/tex]
Whatever number is in Set A, it must also be in Set B and Set C.
The elements in Set A must be an even number and a multiple of 7.
Multiples of 7 from Set A are -7, 14, 21, 42.
The even numbers from these multiples of 7 are 14 and 42.
How many solutions does the system have?
x+y=3
5x + 5y = 15
Choose 1 answer:
A. Exactly one solution
B. No solutions
С. Infinitely many solutions
Answer:
C)
Step-by-step explanation:
The answer is infinitely many solutions
because a1/a2 = b1/b2 = c1/c2.
Hope it helps :)
If you multiply the top equation (x+y=3) by 5 it gives you the same exact solution as the bottom one (5x+5y=15). Therefore, the both equations end up being the same and get canceled out because they both end up being (5x+5y=15), and the only way you can solve those is if you cancel out what is common in both equations.
What is the approximate side length of a game board with an area of 160 in.
Answer:
13 in
Step-by-step explanation:
[tex]\sqrt{a} =160[/tex]²
Perfect squares close to 160 include 144 and 169
12²=144
13²=169
Now that we can see 160 is closer to 169 rather than 144,
[tex]\sqrt{160}[/tex]≈ 13 in
Hope this helps! :)
And if possible, please mark my answer brainliest so i can get to the next rank :(
solve x^3 = 1/8 please i’m dumb and don’t know
Answer:
1/2
Step-by-step explanation:
Cube root of .125 which is 1/8 is 1/2
help me pls and ty !
Answer:
[tex]a=2.6-3.4b[/tex]
Step-by-step explanation:
So we have the equation:
[tex]2.2a+3.4b=1.2a+2.6[/tex]
And we want to solve for a.
So, subtract 1.2a from both sides:
[tex](2.2a+3.4b)-1.2a=(1.2a+2.6)-1.2a\\1a+3.4b=2.6[/tex]
Now, subtract 3.4b from both sides:
[tex](a+3.4b)-3.4b=2.6-3.4b\\a=2.6-3.4b[/tex]
And that's our answer :)
A small newspaper company is downsizing and has lost employers at a steady rate. twelve months ago they had 65 employees, and now they have 29.
Answer:
each month 3 employees were laid off.
Step-by-step explanation:
the company started with 65 employees 12 months ago, and now there are 29. 65 - 29 = 36. In 12 months, 36 employees were laid off. 36 employees divided by 12 months = 3 employees per month.
helpppppppppp aasapppp
Answer:
2
Step-by-step explanation:
Simplify the following:
(-(2 + 2/3))/(-(1 + 1/3))
(-(2 + 2/3))/(-(1 + 1/3)) = (-1)/(-1)×(2 + 2/3)/(1 + 1/3) = (2 + 2/3)/(1 + 1/3):
(2 + 2/3)/(1 + 1/3)
Put 1 + 1/3 over the common denominator 3. 1 + 1/3 = 3/3 + 1/3:
(2 + 2/3)/(3/3 + 1/3)
3/3 + 1/3 = (3 + 1)/3:
(2 + 2/3)/((3 + 1)/3)
3 + 1 = 4:
(2 + 2/3)/(4/3)
Put 2 + 2/3 over the common denominator 3. 2 + 2/3 = (3×2)/3 + 2/3:
((3×2)/3 + 2/3)/(4/3)
3×2 = 6:
(6/3 + 2/3)/(4/3)
6/3 + 2/3 = (6 + 2)/3:
((6 + 2)/3)/(4/3)
6 + 2 = 8:
(8/3)/(4/3)
Multiply the numerator by the reciprocal of the denominator, (8/3)/(4/3) = 8/3×3/4:
(8×3)/(3×4)
(8×3)/(3×4) = 3/3×8/4 = 8/4:
8/4
The gcd of 8 and 4 is 4, so 8/4 = (4×2)/(4×1) = 4/4×2 = 2:
Answer: 2
Answer:
2
Step-by-step explanation:
Convert mixed fraction to improper fraction
[tex]-2\frac{2}{3}=-\frac{8}{3}\\\\\\-1\frac{1}{3}=-\frac{4}{3}[/tex]
[tex]-2\frac{2}{3}[/tex] ÷ [tex]-1\frac{1}{3} =[/tex] [tex]\frac{-8}{3}[/tex] ÷ [tex]-\frac{4}{3}[/tex]
[tex]=-\frac{8}{3}*-\frac{3}{4}\\\\\\=2 *1 \\\\= 2[/tex]
A Man run 1200 meter on a straight line in 4 minutes.find his velocity
Answer:
Hey!
Your answer is 5 m/s!
Step-by-step explanation:
TO FIND VELOCITY:
DISTANCE COVERED / TIME TAKEN
1,200 m / 240 s (we convert 4 mins into seconds for it to fit the formula ie 4 x 60 seconds)
ANSWER: 5
(units are always given as m/s)
HOPE THIS HELPS!!
what is the opposite of -|-1| ?
Answer:
l1l
Step-by-step explanation:
two strips of fabric measures 14 3/4 inches and 20 7/8 inches in length. to form one length, the strips are sown together using 1/2 inch from each strip to make the seam. what is the final length of the fabric after two strips are sewn together
Answer:
34 5/8 inches
Step-by-step explanation:
Let the two strips be fabric A and fabric B
Fabric A= 14 3/4 inches
Fabric B = 20 7/8 inches
To form one length, the strips are sown together using 1/2 inch
Length after sewing=
Fabric A - 1/2 inch
= 14 3/4 inches - 1/2 inch
= 59/4 - 1/2
= 59-2 /4
= 57/4 inches
Length after sewing=
Fabric B - 1/2 inch
= 20 7/8 inches - 1/2 inch
= 167/8 - 1/2
= 167-4 /8
= 163/8 inches
Final length of the fabric after two strips are sewn together
= 57/4 inches + 163/8 inches
= 114+163 /8
= 277/8
= 34 5/8 inches
Final length of the fabric after two strips are sewn together= 34 5/8 inches
For what value of $a$ does the equation $3(2x-a) = 2(3x+12)$ have infinitely many solutions $x$?
Answer:
When a= -8, the equation 3(2x-a) = 2(3x+12) has infinitely many solutions
Step-by-step explanation:
Given:
3(2x-a) = 2(3x+12)
6x - 3a = 6x + 24
Subtract 6x from both sides
6x - 3a - 6x = 6x + 24 - 6x
-3a = 24
Divide both sides by -3
a= 24 / -3
a = -8
Substitute a= -8 into the equation
3(2x-a) = 2(3x+12)
3{2x -(-8)} = 2(3x+12)
3(2x + 8) = 2(3x +12)
6x + 24 = 6x + 24
6x - 6x = 24 - 24
0 = 0
When a= -8, the equation 3(2x-a) = 2(3x+12) has infinitely many solutions
Answer:
aops question smh
Step-by-step explanation:
A game is played, where a die is tossed and a marble selected from a bag. Bag M contains 3 red marbles (R) and 2 green marbles (G). Bag N contains 2 red marbles and 8 green marbles. A fair six-sided die is tossed. If a 3 or 5 appears on the die, bag M is selected (M). If any other number appears, bag N is selected (N). A single marble is then drawn at random from the selected bag. Question ----> Find the probability that a green marble is drawn from either bag.
Answer:
2/3
Step-by-step explanation:
A die has 6 sides. If a 3 or 5 is rolled, then bag M is selected. So the probability that bag M is selected is 2/6 = 1/3.
Likewise, if a number other than 3 or 5 is rolled, then bag N is selected. So the probability that bag N is selected is 4/6 = 2/3.
If bag M is selected, the probability the marble is green is 2/5. The probability that M is selected, AND the marble is green, is therefore:
(1/3) (2/5) = 2/15
If bag N is selected, the probability that the marble is green is 8/10 = 4/5. The probability that N is selected, AND the marble is green, is therefore:
(2/3) (4/5) = 8/15
The total probability that a green marble is selected is therefore:
P = 2/15 + 8/15
P = 10/15
P = 2/3
Bag M: 3 red and 2 green = 5 total, so green = 2/5
Bag N: 2 red and 8 green = 10 total, so green = 8/10 = 4/5
Dice roll: chance of getting Bag M is 2/6 ( 2 numbers out of 6 total numbers on a die), reduces to 1/3
Chance of getting Bag N is 4/6 = 2/3
The probability of picking green = Probability of Bag M x Probability of green in bag M + probability of bag N x probability of green in bag N:
2/5 * 1/3 + 4/5 * 2/3 = 2/15 + 8/15 = 10/15 = 2/3
The probability = 2/3