Answer:
A . im not sure
Step-by-step explanation:
sub to sir sir bmgo plsss..
please help me????????
Answer:
2. 5x+8
3.5a+2b+2-b
4.15+10y
5.8+9x+5y
6. 9+w(to the fourth power)
7. i cant figure out how to do the last
Janet is comparing prices of bottled water. One bottle of water costs $1.92 and contains 12 ounces. Another bottle of water costs $2.40 and contains 16 ounces. Which bottle of water costs less per ounce?
What number goes in the blank.
Answer:
The 16 ounce bottle is the cheapest costing only .15 cents per ounces wile the 12 ounce bottle costs .16 cents and ounce.
Step-by-step explanation:
Whats do you have word do you have to put in this one pls help.
Answer:
Ray
Step-by-step explanation:
It is pointing to a ray coming out of the picture of the sun. Use the pieces r and ay.
Kendra is considering enrolling in two acting schools. One school requires a registration fee of $75 and charges $18 per class. The other school requires a registration fee of $40 and charges $22 per class. Which system of equations can be used to determine how many classes she has to take before one school becomes a better deal
Answer:
Here we go. System of equations:
Step-by-step explanation:
y = 18x + 75
y = 22x + 40
2 equations with 2 unknown,,, x= 35/4, and you will find y= 232.5......then you will have system of linear equation will graph.
A five-digit number starts with a number between 4-9 in the first position, with no restrictions on the remaining 4 digits. a) Find the probability that a randomly-chosen phone number contains all different digits. b) Find the probability that a randomly-chosen phone number contains at least one repeated digit. a) Write an expression that models the probability. Select the correct choice below and fill in the answer box(es) within your choice.
Answer:
(a) [tex]Pr = 0.3024[/tex]
(b) [tex]Pr = 0.6976[/tex]
(c) [tex]Pr = \frac{^9P_{n-1}}{10^{n-1}}[/tex]
Step-by-step explanation:
Given
[tex]Start = \{5,6,7,8\}[/tex] i.e. between 4 and 9
[tex]n(Start) =4[/tex]
[tex]Digits = 5[/tex]
Solving (a): Probability that each of the 5 digit are different
Since there is no restriction;
The total possible selection is as follows:
[tex]First\ digit = 4[/tex] (i.e. any of the 4 start digits)
[tex]Second\ digit = 10\\[/tex] (i.e. any of the 10 digits 0 - 9)
[tex]Third\ digit = 10[/tex] (i.e. any of the 10 digits 0 - 9)
[tex]Fourth\ digit = 10[/tex] (i.e. any of the 10 digits 0 - 9)
[tex]Fifth\ digit = 10[/tex] (i.e. any of the 10 digits 0 - 9)
So, the total is:
[tex]Total = 4 * 10 * 10 * 10 * 10[/tex]
[tex]Total = 40000[/tex]
For selection that all digits are different, the selection is:
[tex]First\ digit = 4[/tex] (i.e. any of the 4 start digits)
[tex]Second\ digit = 9[/tex] (i.e. any of the remaining 9)
[tex]Third\ digit = 8[/tex] (i.e. any of the remaining 8)
[tex]Fourth\ digit = 7[/tex] (i.e. any of the remaining 7)
[tex]Fifth\ digit = 6[/tex] (i.e. any of the remaining 6)
So:
[tex]Selection =4 * 9 * 8 * 7 * 6[/tex]
[tex]Selection =12096[/tex]
So, the probability is:
[tex]Pr = \frac{Selection}{Total}[/tex]
[tex]Pr = \frac{12096}{40000}[/tex]
[tex]Pr = 0.3024[/tex]
Solving (b): At least 1 repeated digit
The probability calculated in (a) is the all digits are different i.e. P(None)
So, using laws of complement
We have:
[tex]P(At\ least\ 1) = 1 - P(None)[/tex]
So, we have:
[tex]Pr= 1 - 0.3024[/tex]
[tex]Pr = 0.6976[/tex]
Solving (c): An expression to model the probability.
Using (a) as a point of reference, we have;
[tex]Pr = \frac{Selection}{Total}[/tex]
Where
[tex]Selection =4 * 9 * 8 * 7 * 6[/tex] ---- for selection of 5 i.e. n = 5
[tex]Total = 4 * 10 * 10 * 10 * 10[/tex]
[tex]Selection =4 * 9 * 8 * 7 * 6[/tex]
This can be rewritten as:
[tex]Selection = 4 * ^9P_4[/tex]
4 can be expressed as: 5 - 1
So, we have:
[tex]Selection = (5-1) *^9P_{5-1}[/tex]
Substitute n for 5
[tex]Selection = (n-1) *^9P_{n-1}[/tex]
[tex]Selection = (n-1)^9P_{n-1}[/tex]
[tex]Total = 4 * 10 * 10 * 10 * 10[/tex]
This can be rewritten as:
[tex]Total = 4 * 10^4[/tex]
[tex]Total = (5-1) * 10^{5-1}[/tex]
[tex]Total = (n-1) * 10^{n-1}[/tex]
[tex]Total = (n-1) 10^{n-1}[/tex]
So, the expression is:
[tex]Pr = \frac{(n-1)^9P_{n-1}}{(n-1)10^{n-1}}[/tex]
[tex]Pr = \frac{^9P_{n-1}}{10^{n-1}}[/tex]
Where n represents the digit number
What is the 8th term of this sequence 2,8,18,36,66, 112,178
Why do we need to lean stuff that we dont need in the real world???
Answer:
Teachers are idiots that's why :)
Answer:
The Answer to that is pretty simple..
Step-by-step explanation:
We learn stuff that we typically don't need in the real world you would think but when it comes to getting a job thats were that information comes in. Like Science about fossils - You might work at a museum?
But some of this stuff is not really needed so I get your point.
A grocery store is giving a reusable bag to every person who donates more then than 5.00 to charity Courtney donates 1.25 will she get a bag.
Answer:
no
Step-by-step explanation:
the punctuation was a little confusing, but heres what i think u meant
"A grocery store is giving a reusable bag to every person who donates more then than 5.00 to charity, Courtney donates 1.25, will she get a bag?"
for this answer we see that x is the amount of money someone donates, so x has to be greater then 5.00, so the mathematical expression would be shown like this
x > 5.00
if x is not greater then 5.00 (like if its equal or less) then the store will not give a new bag, in this case 1.25 is not an amount that x can be
2. A line passes through points (-1,-2) and (1,4). What is the equation of the line? TI
$20,000 $18.400 $16.928 $15.573.76
If the original price of the car was $20,000, what is the depreciation rate?
What will the car be worth after 6 years?
Answer:
Depreciation rate is 8%
Car is worth $12127.10
Step-by-step explanation:
Plz help!! Find the area where f the composite figure
Answer:
The area of this composite figure is 122.75 m².
Step-by-step explanation:
What I can go on ahead & do is split this figure into a 5 * 16 rectangle and a 9 by 9.5 triangle.
(5 * 16) + 1/2(9 * 9.5) {Multiply 5 by 16 first; go from left to right}
80 + 1/2(9 * 9.5) {Now multiply 9 by 9.5}
80 + 1/2(85.5) {Then multiply 85.5 by 1/2, which is the same thing as dividing by 2}
80 + 42.75 {Lastly, add the two values together}
122.75 m²
The area of this composite figure is 122.75 m².
Use a quadratic function to model the area of the triangle. Graph the function. (Refer to the attached photo) no links pls
f(x)=-[tex]\sqrt{x-2}[/tex]+3
Answer:
∫∫↔∧⊄√³²αωФ⊕║
Step-by-step explanation:
Evaluate- 4 + 8 ÷ 2 x (6 - 3)
For each 70 mm of coloured fabric Alex uses to make his curtains, he also uses 20 cm of white fabric. Express the amount of white fabric to coloured fabric as a ratio in its simplest form.
find the correct classisication irratinal number rational number whole number intergers
Step-by-step explanation:
Real numbers include:
Rational numbers include
Fractions, Integers
Integers include
Negative Integers, Whole numbers
Whole numbers include
Zero, Natural number
Irrational numbers
What does equal to? 18 cm = __cm
Answer:
[tex]18 \times 1000 \: metres[/tex]
[tex]18000 \: metres[/tex]
Step-by-step explanation:
[tex]hope \: it \: helps \: don't \: to \: \\ like \: and \: mark \: me[/tex]
A new car valued at 24,000 depreciates at 9% per year. What is the value of the car one year after purchase?
Answer:
$21840
Step-by-step explanation:
24000*0.91=21840
HELPPP MEEEE PLEASE!
Answer:
What is that
Step-by-step explanation:
I am scared of math
New question how do I do this-
Answer:
[tex]y = 18 \\ x = 7.8[/tex]
P!
Vandaki noktalı kâğıtta verilen CD doğru parçasına eşit
uzunlukta iki tane doğru parçası çiziniz. Bu doğru par-
palarının uzunluklarının eşitliğini sembolle gösteriniz.
Answer:
nice dude have a nice day
Gisella has 4 pints of chicken broth. She uses 5 cups of the broth to make soup.
How much chicken broth is left?
Enter your answer in the box.
cups
Answer:
3 cups of Chicken Broth remains
Step-by-step explanation:
Due to gravity, an object falls 16t^2 feet in t seconds. You drop a backpack from a window that is 20 feet above the ground. Will the backpack hit the ground in 1 second?
Answer:
NO
Step-by-step explanation:
Let h(t) represent the distance the pack is located above the ground at time t. Then h(t) = 20 ft - 16t^2 ft. Notice how h = 20 ft (the initial height) and that it decreases as t increases.
How long does it take for the pack tohit the ground? Set h(t) = 0 and solve for t:
0 ft = 20 ft - 16t^2 ft yields 16t^2 ft = 20, or t^2 ft = 20/16, which is greater than 1. So the question "Will the backpack hit the ground in 1 second" is answered by NO.
What is the solution to the following equation?
5(2x –6) + 20 = 10
Answer:
Step-by-step explanation:
Simplifying
5(2x + -6) + 20 = 10
Reorder the terms:
5(-6 + 2x) + 20 = 10
(-6 * 5 + 2x * 5) + 20 = 10
(-30 + 10x) + 20 = 10
Reorder the terms:
-30 + 20 + 10x = 10
Combine like terms: -30 + 20 = -10
-10 + 10x = 10
Solving
-10 + 10x = 10
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '10' to each side of the equation.
-10 + 10 + 10x = 10 + 10
Combine like terms: -10 + 10 = 0
0 + 10x = 10 + 10
10x = 10 + 10
Combine like terms: 10 + 10 = 20
10x = 20
Divide each side by '10'.
x = 2
Simplifying
x = 2
Answer:
x=2
Step-by-step explanation:
Let's solve your equation step-by-step.
5(2x−6)+20=10
Step 1: Simplify both sides of the equation.
5(2x−6)+20=10
(5)(2x)+(5)(−6)+20=10(Distribute)
10x+−30+20=10
(10x)+(−30+20)=10(Combine Like Terms)
10x+−10=10
10x−10=10
Step 2: Add 10 to both sides.
10x−10+10=10+10
10x=20
Step 3: Divide both sides by 10.
10x
10
=
20
10
x=2
Answer:
x=2
Find the volume of the cylinder and round to the nearest tenth. Remember to show the units cubed
V=?
r=9ft
h=6ft
Answer:
1526.8 units cubed
Step-by-step explanation:
pi * 81 (which is 9 squared) * 6 equals that
Please help with this algebra question
Answer:
y < 5x + 5
Step-by-step explanation:
find slope and y-intercept first:
for slope I used the formula with these two points: (0,5) and (-1,0) and the y-intercept can be seen at (0,5)
so equation is y = 5x + 5
but we need to select an inequality symbol, because line is dashed it must be either > or <
I used the point (0, 0) to determine the sign:
is this true or false? 0 > 5(0) + 5 False
so the sign must be <
Check: is this true or false? 0 < 5(0) + 5 True
Y= 2x+1 Graph this line
Answer:
look up desmos graphing calculator! you're welcome x
Step-by-step explanation:
7 over 9 raised to the 2nd power value
Answer:
7/9²=49/81
Step-by-step explanation:
soskssjshsgsgsgsgsgs
A study was conducted to measure the effectiveness of hypnotism in reducing pain. The measurements are centimeters on a pain scale before and after hypnosis. Assume that the paired sample data are simple random samples and that the differences have a distribution that is approximately normal. Construct a 95% confidence interval for the mean of the "before−after" differences. Does hypnotism appear to be effective in reducing pain? In this example, μd is the mean value of the differences d for the population of all pairs of data, where each individual difference d is defined as the difference in the measurements in centimeters on a pain scale before and after hypnosis. What is the P-value for this hypothesis test? (Round to three decimal places as needed.) Answer
Required data:
Before 6.4 2.6 7.7 10.5 11.7 5.8 4.3 2.8
After 6.7 2.4 7.4 8.1 8.6 6.4 3.9 2.7
Answer:
Confidence interval = (-0.404 ; 1.804)
Pvalue = 0.178
Step-by-step explanation:
H0: μd = 0
H1 : μd ≠ 0
Difference, d = (x - y)
d = - 0.3, 0.2, 0.3, 2.4, 3.1, - 0.6, 0.4, 0.1
Using calculator :
μd = 0.7
Sd = 1.32
Confidence interval :
Mean ± margin of error
Margin of Error =Tcritical * Sd/√n
Tcritical at df = 7, 0.5, 2 - tailed = 2.365
Margin of Error = 2.365 * 1.32/√8
Margin of Error = 1.104
Lower boundary :
(0.7 - 1.104) = - 0.404
Upper boundary :
(0.7 + 1.104) = 1.804
(-0.404 ; 1.804)
Test statistic, = μd / (Sd ÷ √n)
Test statistic = 0.7 / (1.32 ÷ √8)
Test statistic = 1.499
From the test statistic score ; using a Pvalue calculator :
Pvalue = 0.178 ( 3 decimal places)
Help me or I’ll mark Brainly I just need a couple of answers finished
Answer:
4. 72 m
5. 42 m
6. 66 yd
8. 18 yd
9. 200 cm
Step-by-step explanation:
3) 1 × 3 × 8 + [5 × 8 × (4-3)] = 24 + 40 = 64 yd³
4) 9 × 1 × 8 = 72 m³
5) 3 × 7 × 2 = 42 m³
6) 3 × 3 × (6 - 2) + 2 × 5 × 3 = 36 + 30 = 66 yd³
7) (7 - 5) × 7 × 3 + 8 × 7 × 5 = 42 + 280 = 322 mm³
8) 3 × 3 × 2 = 18 yd³
9) 8 × 5 × 5 = 200 cm³