Answer:
68%
Step-by-step explanation:
please mark me brainliest
Answer: C
Hello,
Step-by-step explanation:
[tex]\overline{x}=50,\ \sigma=3,\ z=\dfrac{x-50}{3} \\\\p(47\leq x \leq 53)=p(\dfrac{47-50}{3} \leq z \leq \dfrac{53-50}{3} )=p(-1\leq z \leq 1)\\\\p(z\leq 1)=0.8413\ (in\ table)\\\\p(z\geq 1)=p(z\leq 1)=1-0.8413=0.1587\\\\p(-1\leq z \leq 1)=0.8413-01587=0.6826\\[/tex]
p≈68%
Answer C
Rewrite the expression in the form b^n b^10÷b^6=
Answer:
[tex] {b}^{10} \div {b}^{6} = {b}^{4} \\ \\ \frac{ {b}^{10} }{ {b}^{6} } = b^{10 - 6} = {b}^{4} [/tex]
I hope I helped you^_^
Define a variable and write an inequality for each problem. Then solve.
15. Nineteen more than a number is less than 42.
16. The difference of three times a number and 16 is at least 8.
17. One half of a number is more than 6 less than the same number.
18. Five less than the product of 6 and a number is no more than twice that same number.
Answer:
15) n+19<42
16) 3n-16 (less or equal) 8
17) n/2 > n-6
18) 6n-5<2n
Step-by-step explanation:
What’s 4,708.06 rounded to the nearest thousand?
Answer:
when rounding anything that is or is greater than 5 you round up 1.
4,->7<-08.06
so rounding up 1, 4 would turn into 5.
Which of the following is equivalent to the radical expression below when
x20?
VAX 1X+7
A. x 47
B. VAXA + 20%
C. VAMAX
D. X* 20%
Answer:
B in the photo
Step-by-step explanation:
another way to write the problem:
square root is also taking the 1/2 power:
[tex](4x)^{1/2} * (x+7)^{1/2} \\[/tex]
since they are raised to the same power:
[tex](4x * (x+7))^{1/2}\\(4x^2 + 28x)^{1/2}\\\\=\sqrt{4x^2 + 28x}[/tex]
In may cafe mocha raised their price for each cup of coffee $2.25 how much money did cafe mocha earn from their coffee of the month of may?
387×$2.25=$870.75
hope it helps.
A rental car agency charges $220 per week plus $0.15 per mile to rent a car. How many miles can you travel in one week for $352.00?
Answer:
880 miles
Step-by-step explanation:
352 - 220 = 132
132 ÷ 0.15 = 880
880 miles
Fully factorise: 4x2−25
NEED ANSWER ONLY DON'T SHOW STEPS. URGENT!!!
a. (2x+5)(2x−5)
b. (2x−5)(2x−5)
c. (4x+5)(x−5)
d. (3x+20)(x+5)
Answer:
The correct choice is option a. (2x+5)(2x−5)
Answer:
Option a. (2x+5)(2x-5)
Step-by-step explanation:
4x2 - 25
Furthermore, this is the difference of squares formula we will use to factor 4x^2-25:
a2 - b2 = (a + b) • (a − b)
As you can see, our problem does not look like the left side of the formula, so first we have to convert our problem to match the left side like so:
4x2 - 25 = (2x)2 - 52
Now that it matches, we can simply plug in 2x for a and 5 for b into the formula to get the factors of 4x^2-25:
(2x + 5) • (2x − 5)
________________________________
I know this is urgent but still I gave you the explanation so that whenever you're confused with questions like that then these steps can help you.
How long will it take a car that is travelling with a speed of 45m/s to travel a
distance 500m?
Answer:
time=distance/speed
time=500/45
time=11.11 sec
Answer:
11 1/9 seconds = time
Step-by-step explanation:
We know that
Distance = rate * time
500 m = 45 m/s * time
Divide each side by 45
500/45 = time
11 1/9 seconds = time
i need a little help here, im struggling rnn
Answer:
-7, -11
Step-by-step explanation:just count down and up how many steps
a retailer allows is 15% discount on the mp of electric fan if a customer pays rs 2244 with 10% vat find the mp of the fan
Answer:
LetmarkedPricebeRsxofelectricfan
∴9%discountonxRupees
andchargestocustomeris728rupees
∴x−1009x=728,10091x=728,91x=728×100,x=756×100=800rupees
Step-by-step explanation:
MP of the fan is 2400.
To find the mp of the fan.
What is profit and loss?To buy goods from the shopkeepers in the market which they buy either directly from the manufacturers or through the wholesalers.
Given:
let’s calculate backwards :
2244 = 100% sale price + 10% VAT = 110%
1% = 2244 / 110 = 20.40
100% (actual sale price) = 20.40×100 = 2040
Now, because of the 15% discount, these 2040 are only 85% of the originally marked price.
2040 = 85%
1% = 2040 / 85 = 24.00
100% (the original marked price) = 24×100 = 2400
2244 is the final price. it includes the VAT based on the actual sale price. and that is then actually 15% lower than the originally marked price.
So, the MP of the fan is 2400.
Learn more about profit and loss here:
https://brainly.com/question/24431998
#SPJ2
Evaluate the expression below
Step-by-step explanation:
6(4+8)
24+48
72 Answer
hope it helps
Answer:
6(x+8)
when the value of x we s equal to 4, then
6(4+8)
Now, by adding 4 and 8, we get
6(12)
6×12
Now, by multiplying 6 and 12, we get
72
if (a+b)=3 and ab=2, find the value of a2+b2
Answer: so a^2 + b^2 = 5
Step-by-step explanation:
(a+b) = 3
ab = 2
so
(a+b)^2 = 3^2
a^2 + 2ab + b^2 = 9
or, a^2 + 2*2 + b^2 = 9
or, a^2 + 4 + b^2 = 9
or, a^2 +b^2 = 9-4 = 5
Julie and Shawna ordered a pizza. Julie ate 3/8 of the pizza and Shawna ate 5/16 of the pizza. Who
ate more of the pizza? Justify your answer with work or an explanation.
Can someone help me with this one pleaseee!!!!
Helppppp plzzzzzzz!!!!!!!! 20+PTS and brainliest!!!!!!!!!!!!!!!
Answer:
slope is -1/25. This slope in context means that the car can drive 25 miles per gallon. the y int is 15. in context to the problem, the car started with 15 gallons in its tank.
Step-by-step explanation:
Determine the rate the airplane
needs to travels to fly 2000 miles
in 5 hours
Answer:
the airplane needs to travel 400 mph to reach 2000 miles in 5 hours
One positive number is 5 more than twice another. If their product is 1827, find the numbers.
smaller number =
larger number =
9514 1404 393
Answer:
smaller: 29larger: 63Step-by-step explanation:
If we let x and y represent "one number" and "another", respectively, then the given relations are ...
x = 5 +2y
xy = 1827
Substituting for x gives a quadratic in y:
(5 +2y)(y) = 1827
2y^2 +5y -1827 = 0 . . . . . written in standard form
We can use the quadratic formula to find the positive value of y that satisfies this:
y = (-5 +√(5² -4(2)(-1827)))/(2(2)) = (-5 +√14641)/4 = 116/4 = 29
x = 5 +2(29) = 63 . . . . using the above expression for x
The smaller number is 29; the larger number is 63.
Please I need the answers if it is for today please if you can in edited photography, it is before 9 o'clock At that time I have to go to sleep please, I give a crown :(
Answer:
mkhhikbyjhggfikmnikkfyujikok
please help me solve that question
Answer:
i). 14/75 or 19%
ii). 2/25 or 8%
Step-by-step explanation:
i). Using the combinations formula if repetition is allowed
If n choose r,
(r+n-1)!/r!(n-1)!
Where n is the things we have to pick from and r is the objects we want. We want 2 objects and we have 24 objects to pick from.
So our equation will be
(2+24-1)!/2!(24-1)!
(25)!/2!(23)!,
This gives us 300. So there is 300 possible combinations.
Since we have two independent events, we can multiply two events and divide it by 300 to find the probability.
i) There is 14 good defects and 4 major defects so
[tex] \frac{14 \times 4}{300} = \frac{56}{300} = \frac{14}{75} [/tex]
So the probability is 14/75 or 19%
ii) We can do the same thing in question 1
There is 6 minor defects and 4 major so
[tex] \frac{6 \times 4}{300} = \frac{24}{300} = \frac{8}{100} = \frac{2}{25} [/tex]
So this means the probability is 8% or 2/25
The table below shows the price of rolls a bakeryA baker's dozen includes 13 rolls for the price of a dozen rolls. How much money is saved by buying a baker's dozen instead of 13 individual rolls? Please help
9514 1404 393
Answer:
(b) $0.60
Step-by-step explanation:
The cost is proportional to the number of rolls. It is $3.60/(6 rolls) = $0.60/roll. When you buy a Baker's Dozen, you save the cost of one roll: $0.60.
it's 0.60
have an nice nice nice nice day
Ivan’s desserts made a batch of fresh scones with 4/5 of a pound of butter and 1/2 of a pound of sugar. How much more butter than sugar was used?
I need some help with this. how many beats per minute?
The bottom row x axis) is seconds and goes to 6 seconds
Each peak is a heartbeat, there are 9 in the 6 seconds.
A minute is 60 seconds.
60 seconds / 6 seconds = 10
9 beats every 6 seconds x 10 = 90 beats per minute.
The heart rate is 90 beats per minute
Find the value of 9 - [4 2 - (3 + 2)]. 8 6 -2
Answer:
-2
Step-by-step explanation:
9 - [4^2 - (3 + 2)]
PEDMAS says parentheses first
Work from the inside out
9 - [4^2 - (5)]
9 - [16-5]
9 - [11]
Subtract
9-11
-2
what is the range of the numbers 5,9,7,2,2
Answer:
7 is the answer hope this helps
plz help brainiest to whoever right
Answer:
(1/2)hb = Area of Triangle
s^2 = Area of Square
lw = Area of Rectangle
4s = Perimeter of a Square
2l + 2w = Perimeter of a Rectangle
a + b + c = Perimeter of a Triangle
Solve equation by factoring.
Hi ;-)
[tex]x^2+6x-10=30 \ \ /-30\\\\x^2+6x-40=0\\\\a=1, \ b=6, \ c=-40\\\\\Delta=b^2-4ac=6^2-4\cdot1\cdot(-40)=36+160=196\\\\\sqrt{\Delta}=\sqrt{196}=14\\\\x_1=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-6-14}{2}=\boxed{-10}\\\\x_2=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-6+14}{2}=\boxed4[/tex]
Multiply.
(b - 7)(2b +9)
(b - 7)(2b + 9) = (Simplify your answer.)
Answer:
foil method
add/subtract like terms
Step-by-step explanation:
b×2b=2b²
b×9=9b
-7×2b=-14b
-7×9=-63
-14b+9=-5
=2b²-5b-63
A rectangular picture frame has length three inches longer than twice it’s width. The perimeter is 36 inches. Find the width of the frame.
a.) 5in
b.) 7in
c.) 10in
d.) 11in
Answer:
A. 5 in
Step-by-step explanation:
Let w represent the width of the frame.
If the length is 3 inches longer than twice the width, it can be represented by 2w + 3.
Use the perimeter formula, p = 2l + 2w. Plug in the perimeter and 2w + 3 as l, and solve for w:
p = 2l + 2w
36 = 2(2w + 3) + 2w
36 = 4w + 6 + 2w
36 = 6w + 6
30 = 6w
5 = w
So, the width of the frame is 5 inches.
The correct answer is A. 5 in
Choose the equation that satisfies the data in the table.
-15 0 15
х
[
y
0
2
4
Answer:
B. y = [tex]\frac{2}{15} X + 2[/tex]
Step-by-step explanation:
I. Given x = 15 and y = 4
4 = [tex]\frac{2}{15}(15) + 2[/tex]
4 = 2+2
4 = 4 true
II. Give x = 0 and y = 2
2 = [tex]\frac{2}{15}(0) + 2[/tex]
2 = 0 + 2
2 = 2 true
III. Given x = -15 and y = 0
0 = [tex]\frac{2}{15}(-15) + 2[/tex]
0 = -2 + 2
0 = 0 true
Good luck.
Solve equation by completing the square.
Answer:
x=3 and x=5
Step-by-step explanation:
x2−8x+15=0
To solve the equation, factor x2−8x+15 using formula x2+(a+b)x+ab=(x+a)(x+b). To find a and b, set up a system to be solved.
a+b=−8ab=15
Since ab is positive, a and b have the same sign. Since a+b is negative, a and b are both negative. List all such integer pairs that give product 15.
−1,−15−3,−5
Calculate the sum for each pair.
−1−15=−16−3−5=−8
The solution is the pair that gives sum −8.
a=−5b=−3
Rewrite factored expression (x+a)(x+b) using the obtained values.
(x−5)(x−3)
To find equation solutions, solve x−5=0 and x−3=0.
x=5x=3
hope it helps :)