Answer:
CED is a right angle, CEB=AEB
hopw that helps
Answer:
1st, 2nd, 5th
Step-by-step explanation:
PLEASE HELP ASAP ∵Jasmine can bake 24 cupcakes in 3 hours. How many cupcakes can she bake in 5 1/2 hours
Answer: 44 Cupcakes, She can make 8 cupcakes per hour and 4 cupcakes every half-hour. 24/3=8
Answer:
Answer: 44 Cupcakes, She can make 8 cupcakes per hour and 4 cupcakes every half-hour. 24/3=8
Step-by-step explanation: bleep
2. The service life of a battery used in a cardiac pacemaker is assumed to be normally distributed. A random sample of ten batteries is subjected to an accelerated life test by running them continuously at an elevated temperature until failure, and the follow ing lifetimes (in hours) are obtained: 25.5, 26.1, 26.8, 23.2, 24.2, 28.4, 25.0, 27.8, 27.3, and 25.7. a. The manufacturer wants to be certain that the mean battery life exceeds 25 h. What conclusions can be drawn from these data (use a= 0.05)? b. Construct a 90% two-sided confidence interval on mean life in the accelerated test.
Answer:
Kindly check explanation
Step-by-step explanation:
Assuming a normal distribution :
Sample (x) :25.5, 26.1, 26.8, 23.2, 24.2, 28.4, 25.0, 27.8, 27.3, 25.7
Null hypothesis : μ = 25
Alternative hypothesis : μ > 25
α = 0.05
Decision region :
Reject Null if :
t0 > t
t can be obtained from the t distribution table at : df = (n - 1) = 10 - 1 = 9 ; α = 0.05
Hence, t(0.05, 9) = 1.833
From the sample given ; t0
t0 = (m - μ) / (s /√n)
n = sample size = 10
s = sample standard deviation
m = sample mean
Using calculator :
25.5, 26.1, 26.8, 23.2, 24.2, 28.4, 25.0, 27.8, 27.3, 25.7
Sample mean(m) = 26
Sample standard deviation (s) = 1.624
t0 = (26 - 25) / (1.624 /√10) = 1.947
1.947 > 1.833
Hence, reject Null
B)
Confidence interval at 90% ; α = 0.1
m ± t(0.1/2 ; 9) * s/√n
m - t * s/√n ≤ μ ≤ m + t * s/√n
26 - 1.833 * (1.624/√10) ≤ μ ≤ 26 + 1.833 * (1.624/√10)
25.059 ≤ μ ≤ 26.941
Given: △ABC, m∠A=60°
m∠C=45°, AB = 9
Find: Perimeter of △ABC
Area of △ABC
Please don't use trig
Answer:
Perimeter of ΔABC =32.31 units
Area of the triangle ABC = 47.81 sq. unit
Step-by-step explanation:
In triangle ABC
[tex]\angle A = 60^{\circ}\\\angle C = 45^{\circ}[/tex]
Angle sum property of triangle : The sum of the measures of the all angles of triangle is 180°
[tex]\angle A + \angle B + \angle C = 180^{\circ}\\60 + \angle B + 45 = 180\\\angle B + 105 = 180\\\angle B = 75^{\circ}[/tex]
Now we are supposed to find the perimeter and the area of the ΔABC
We will use the sine rule to find the lengths of sides BC and AC
Sine rule : [tex]\frac{Sin A}{BC}=\frac{Sin B}{AC}=\frac{Sin C}{AB}[/tex]
[tex]\frac{Sin 60}{BC}=\frac{Sin 75}{AC}=\frac{Sin 45}{9}\\BC \times sin(45) = 9 \times sin(60)\\ BC = 11.02[/tex]
[tex]AC \times sin(45) = 9 \times sin(75)[/tex]
AC = 12.29
Perimeter of ΔABC = AB + BC + AC
Perimeter of ΔABC = 9 + 11.02 + 12.29 =32.31 units
Area by using the sine rule:
Area of the triangle ABC =[tex]\frac{1}{2} (AB)(BC) sin B[/tex]
Area of the triangle ABC =[tex]\frac{1}{2} (9)(11) sin(75)[/tex]
Area of the triangle ABC = 47.81 sq. unit
Assume a tax rate of 6.2% on $128,400 for Social Security and 1.45% for Medicare. No one will reach the maximum for FICA. Complete the following payroll register. (Use the percentage method to calculate FIT for this weekly period
Marital status - m
Allowance claimed – 4
Gross pay - $,2800
FIT
Social Security
Medicare
Net pay
Answer:
FIT: $340.76 (see comment)OASDI: $173.60Medicare: $40.60Net Pay: $2245.04Step-by-step explanation:
In addition to the information given in the problem statement, we need to know the applicable tax rates and allowance deductions. If we assume the tables we found (attachments 1 and 2) are the same as those in your text, the one additional fact needed is the gross pay to date. At the given wage rate, paychecks after the 44th week will have reduced FICA tax deductions.
Allowances: 4 × $79.80 = $319.20
Adjusted gross pay for FIT: $2800 -319.20 ≈ $2481 (rounded to nearest $)*
FIT: 0.22 × (2481 -1711) +171.36 = 0.22×2481 -205.06 = 340.76
Social Security & Medicare: 0.0765 × 2800 = 214.20
Net pay = $2800 -340.76 -214.20 = $2245.04
_____
* Comment on rounding
The IRS gives the option of rounding the pay or the tax, as long as it is consistently done. Here, the amount of tax on the unrounded gross pay would be 4 cents less: 340.72. The option of reducing the last digit of pay to zero is also offered. FIT on 2480 would be 340.54.
5 and (-5) are a zero pair. ture False
Answer:
true
Step-by-step explanation:
when you put them together you get 0
What is -5/8 + 3/4 I cannot seem to figure it out correctly thanks!
Step-by-step explanation:
-5/8 + 3/4
= -5/8 + 6/8
=1/8
a bag contains 6 white balls 9 black balls and 4 red balls. Four balls are selected from this bag then find the number of ways that all four balls are of same colour
Hope this answer helps you....
I accidently answered this I'm sorry!! Is there a way 2 delete my answer?
In the expression 5^2the 5 represents the
Answer:
coefficient
Step-by-step explanation:
what is the answer? pls help
Answer:
There is no constant slope. I hope this helps!
Answer:
-3
Step-by-step explanation:
You can use the slop formula--
22-1 divided by 8-1 = 21/7 = 3
You can check by using any other two points and see if you get the same answer.
Hope this helps!
Add or subtract.
1/7+5/6
Answer:
Hi there
Your answer is
41/42
Step-by-step explanation:
To add these, they need to have the same denominator.
1/7 * 6/6 = 6/42
5/6 * 7/7 = 35/42
6/42 + 35/42
=
41/42
How much more is a 6% pay increase when your current annual salary is $62,900
Answer:
$3744
Step-by-step explanation:
use the functions to find f(-1/3)
Answer:
f(x) = 17/2 or 8.5
Step-by-step explanation:
f ( x ) = 10-9/2x
By substituting the values,
f (x) = 10 - 9/2(-1/3)
= 10-3/2 = 17/2= 8.5
An attic floor is shaped like a triangle with a height of n yd and a base of 6 yd.
Which expression represents the area of the floor?
A. 6n
B. 3n
C. 3n/2
D. N+6
Please explain I don't get it helpppp
How do I solve this equation? -6=b/18 and v-15-=-27
Answer:
-6 = b/18
-6×18=b
-108 = b ans.
and
v-15- = -27
v = -27 +15
v = -12 ans.
3y - 2 = 13
helppp
there’s 20 points
Answer:
y=5
Step-by-step explanation:
if u simplify it u get
3y=15
then u divide it and u get
y=5
0.03 recurring a fraction
Answer:
the decimal representation of 1/3 = 0.3333333... becomes periodic just after the decimal point, repeating the single-digit sequence "3" infinitely.
plz mark brainliest
What is 3/11 * 3 1/4?
Express 19.07 as a mixed number.
Find X and Y in the figure
Answer:
x = 15
y = 19
Step-by-step explanation:
(5x-5) = (4x+10) reason[ being corresponding angle]
or, 5x-4x = 10+5
or, x = 15.
Similarly,
(5x-5)+(6y-4) = 180 reason[being supplementary angle]
putting the value of x in the equation, so
or, (5*15 -5)+(6y-4) = 180
or, 75-5+6y-4 = 180
or, 66+6y = 180
or, y = 30-11
or, y = 19.
Each of the 25 students in Mr. McDonald class sold 16 raffle tickets if each ticket cost $15 how much money did Mr. McDonald’s students raise PLEASE HELP
Answer:
Mr. McDonald's class raised $6,000 dollars.
Step-by-step explanation:
So they're are 25 students in the class and they each sold 16 raffle tickets. The easiest way to do this problem is to first find the amount of raffle tickets sold and then multiply that by 15. You could also just do 25*16*15 but that doesn't make much sense just thinking about it. So the first operation we have to do is 25*16 because multiplication is repeated addition so we're basically doing 16+16 25 times to see how much raffle tickets were sold. So that is 400 and then we multiply by 15 because each ticket sold for 15 dollars so if we sold 400 raffle tickets for 15 dollars each, again multiplication is repeated addition so we do 15+15 400 times which is 400*15=6,000. So Mr.McDonald's class raised $6,000 dollars.
The perimeter of a rectangular room is 60 feet. Let x be the width of the room (in feet) and let y be the length of the room (in feet). Select all of the equations below that could model this
situation
A. 2(x + y) = 60
B. 2x + 2y = 60
C. x+2y = 60
D. 2x + y = 60
E. x+y = 60
Answer:
A and B are the correct answers
The equation that represent the given situation is 2 ( x +y) = 60 and 2x +2y = 60, the correct option is A, and B.
What is an Equation?An equation is a mathematical statement formed when two algebraic expressions are equated using an equal sign.
The equations are useful in determination of unknown parameters.
A rectangle is a polygon with four sides, the opposite sides of a rectangle is parallel and equal.
The perimeter of a rectangular room is 60 feet.
The perimeter of a rectangle is given by,
P = 2 ( Length + Breadth)
Let x be the width of the room (in feet).
Let y be the length of the room (in feet).
Substituting the values in the formula to get the equation.
60 = 2 ( x +y)
2 ( x +y) = 60 ---------- (1)
2x +2y = 60 ------------(2)
Therefore, the equations that could model this is situation 2 ( x +y) = 60 and 2x +2y = 60.
To know more about Equation
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A stalactite and stalagmite are growing toward each other in a cave. The following graph shows the relationship between the time (in years) since they appeared and the distance (in millimeters) between the stalactite and stalagmite. What feature of the graph represents the rate of change of the distance between the stalactite and stalagmite? slope, x-intercept, y-intercept, or none of the above
Answer:
Answer:
A slope is corect
Step-by-step explanation:
Answer:
Slope
Step-by-step explanation:
Khan told me :)
HELP PLEASE GIVING BRAINLIEST AND 10 POINTS!!!!
Answer:
She can hike 24 miles in 12 hours. Have a nice day. :)
Step-by-step explanation:
Answer:
Step-by-step explanation: Im confised. so sorry
what is 15 700 000 rounded to the nearest hundred thousandth
Nine more than three times a number is -6 written out please hurry and
Answer:
It is the number -5. that is the number
Answer:
3 x -5 = -15
-15 + 9 = -6
Step-by-step explanation:
Zoé compró 3 quesos de 3/5 cada uno. ¿cuántos Kilogramos de queso tiene en total?
Answer:
W = 1.8 kg
Step-by-step explanation:
Zoé bought 3 cheeses, 3/5 each. How many Kilograms of cheese does he have in total?
Weight of each cheese is 3/5 kg. Zoe bought 3 cheeses. We need to find the weight of cheese in total.
To find weight of 3 cheeses, we will multiply 3 by 3/5 such that:
[tex]W=3\times \dfrac{3}{5}\\\\W=1.8\ kg[/tex]
So, the weight of cheese in total is 1.8 kg.
please answer! Find the value of x that makes a || b
HELP PLEASE WILL GIVE BRAINLIEST
12=x÷8
I need help please
Answer:
x=96
Step-by-step explanation:
What is -2 17/18 as a decimal?
Answer:
-2.94
Step-by-step explanation: