Answer:
x=60° or 300°
Step-by-step explanation:
2cosx=1
cosx=1/2
cosx=cos60°,cos(360-60)°
cosx=cos60,cos300
either,
cosx=cos60
x=60
or,
cosx=cos300
x=300
evaluate the expression. (120÷20)÷(2*3)
Answer: 9
Step-by-step explanation:
120/20/2 (3)
6/2 (3)
(3) (3)
= 9
Glad I could help!
What’s 3/8 OF 5 as a mixed number
Answer:
Step-by-step explanation:
2 3;8
Answer:
1 7/8.
Step-by-step explanation:
5 * 3/8
= 15/8
= 1 7/8.
Which of the best following statements BEST described the location of -(-6) on a number line?
A. It is 6 units to the left of 0
B. It is 6 units to the right 6
C. It is 6 units to the right of the 0
D. It is 6 units to the left of 6
Answer:
A
Step-by-step explanation:
because it is a
Using Newton-Raphs
f (x) = 2x3 + x2 - x + 1 accurate to within 10-4
Answer:
2x3+x2−x+1x
Step-by-step explanation:
Let's solve for f.
fx=2x3+x2−x+1
Step 1: Divide both sides by x.
fx=2x3+x2−x+1x
fx=2x3+x2−x1x
Answer:
9514 1404 393
Answer:
-1.2338
Step-by-step explanation:
The graph shows the one real root is about -1.234. The Newton's method iterator is ...
new x = x - f(x)/f'(x) . . . . . where f'(x) is the derivative of f(x)
Many graphing calculators provide a derivative function, so the iteration equation can be evaluated more or less directly by the calculator. In the attached, we have shown a table with three iterations of the root. After the second iteration, the root is good to 4 decimal places.
x ≈ -1.2338
41°
40°
X
X
O 40
39
0 41
Answer:
39
Step-by-step explanation:
just had it.
In the figure below, if the radius of circle o
is 10, what is the length of diagonal AC of
rectangle OABC?
Answer:
The length of AC is 10 units
Step-by-step explanation:
In the given circle O
∵ AOCB is a rectangle
∵ OB and AC are the diagonals of the rectangle AOCB
∵ Diagonals of the rectangle are equal in lengths
→ That means OB and AC are equal in lengths
∴ OB = AC
∵ O is the center of the circle
∵ B is a point on the circle
∴ OB is a radius of the circle O
∵ The radius of the circle is 10 units
∴ OB = 10 units
∵ OB = AC
∴ AC = 10 units
∴ The length of AC is 10 units
A. 5x – 2 + 2 = 2 - 4
B.
5x +2 = 2-4
1) How can we get Equation B from Equation A?
Choose 1 answer:
А
Add/subtract a quantity to/from only one side
B
Add/subtract the same quantity to/from both sides
Rewrite one side (or both) using the distributive property
Answer:a
Step-by-step explanation:
At soccer practice on Saturday morning, Liz's team practiced dribbling for 45 minutes and practiced shooting for 15 minutes. Then, they played a scrimmage game for 45 minutes before practice ended at 9:30 A.M. What time did Liz's soccer practice start?
Please help me fast!!!
Answer:
7:45 AM I believe:)
Step-by-step explanation:
Help 6th grade math thanks
Answer:
8.75
Step-by-step explanation:
In order to find the unit rate, you need to divide the variable by the independent variable. In this case, your dependent variable would be $122.50 because the cost depends on how much you are buying; you're independent variable will be 14 because it doesn't depend on the other.
Divide 122.5 by 14 and your answer would be 8.75
Hope this helps!!! :)
Also, please give me brainliest if you don't mind. :)
If you don't want to, then it's okay.
8.75 hope this answers your question.
Help..I’m useing all my points TELL ME ALL THE AWNSERS TO THE LOWER PART
Answers:
Lazy Butcher: M E A T L O A F E R
Rubber Raft: P L A Y B U O Y
Corn Salesman: S T A L K B R O K E R
T = 6(3*4 - 5) - 9*4 = 6
U = 4 - 8(-2 -6*-1) = -28
Y = -3*-3 + 2(-5 * -3 + 1) = 41
R = -7(7 +6) + 12 = 79
F = 4(8 + 5 * -2) + 2* -2 = -12
S = -5 -3(4 - 9) = 10
E = 7 - 6(-8 + 2 * -6) + -6 = 121
P = 8 * -8 - 9 * -8 + 2(-3 * -8 - 4) = 48
K = -4(4 + 7 * 2) + 5 + 3 * 2 = -61
B = 5(--5 - 3) + 4 * -5 - 10 = -20
M = -1 + 9(4 * -1 - 2) - 6 * -1 = -49
A = 6 - 2 * 3 - 6(-3 * 3 + 7) = 12
O = -8(9 + 2 * 6) + 8 * 6 + 6 = -114
L = -1 - 5 + 5(-5 * 1 + 9) = 14
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Your payment is $375 per month for 36 months and you made a $2,500 a down payment
Answer:
$16,000?
Step-by-step explanation:
375 times 36 is 13500
Add 2500
and you have 1600
thats my guess
1) What is the area of a rectangle that has side lengths of yard and yard?
Answer:
boooooooooomnhbhikbn
Step-by-step explanation:
Answer:
Yards Squared
Step-by-step explanation:
Because multiplication it ends up as squared yards!
Evaluate the expression 2x + xy if x = 2 and y = 14?
Rachel wants to save money for a foreign exchange student program. She
needs $950 to belong to the program. She has $200. She earns $40 per
week. How can she figure out the number of weeks that she will take to
save enough money for her program?
O A. Add 200 plus 950 and then divide by 40.
O B. Subtract 40 from 950 and then divide by 200.
O C. Add 200 plus 40 and then divide by 950.
O D. Subtract 200 from 950 and then divide by 40.
how many meters an Ostrich can run in 1 second, 2 seconds , and 4 seconds?
Answer:
An ostrich could run near 21 meters in 2 seconds and around 84 meters in 4 seconds
Test Practice When Xavier buys his lunch, he saves the nickel
gets as change. How much money will Xavier have if he buys his
lunch 4 times one week and 2 times the second week?
Understanding:
First of all, each time Xavier buys lunch he saves a nickel. That means if he buys lunch twice, he is saving 2 nickels, buys 3 times he saves 3 nickels, and so on. To solve this problem we can simply add the times he bought lunch and that will equal the value of nickles he saved so far.
Solution:
First-week savings = 4 nickels
Second-week savings = 2 nickels
Simply, adding those together gives us 6 nickels.
There are 4 granola bars. Three friends want to share them evenly.
How much would each friend get? Show your answer in two different ways.
Answer:
4/3 or 1 and 1/3 or 1.33333 repeating
Step-by-step explanation:
you have 4 granola bars and 3 friends and you want to divide them among 3 friends
4/3
Answer:
1.3recuring or 3/4
Step-by-step explanation:
hope it helps
I dont understand this problem
Answer:
64 ; 8
Step-by-step explanation:
a² ± 2ab + b² = (a ± b)²
x² + 2(8)(x) + 8² =
x² + 16x + 64 =
(x + 8)²
Please help me pleasee!
Answer:
3) (4, 2)
Step-by-step explanation:
The point of intersection of the lines is the solution. That point is (4, 2).
Answer: 3) (4, 2)
Answer:
the answer is the third one (4, 2)
Step-by-step explanation:
the solution to a system of equations is always where they intersect. in this case, the two lines intersect at (4, 2), which means that the solution is (4, 2).
hope this helped!! :D
When reaching mile marker 7 on a trail, Natalie uses her GPS to find that her current elevation is 6350 feet. If she follows the trail until its end at mile marker 12, her elevation will be 8720 feet. What is the average change in elevation of Natalie’s position from mile marker 7 to mile marker 12, in feet per mile marker?
Find the difference in elevations:
8720 - 6350 = 2370 feet.
Difference in mile markers: 12-7 = 5
Average change = feet / markers
2370/5 = 474
The answer is 474 feet
Two more than 4 times a number is the number less 7. What is the number?
What is the relationship between the length of one leg and the length of the hypotenuse of an isosceles right triangles?
A) Leg = Hypotenuse ∙ √2
B) Hypotenuse = Leg ∙ √2
C) Leg ∙ Hypotenuse = √2
Answer:
B) Hypotenuse = Leg ∙ √2
Step-by-step explanation:
This is a well-known ratio in the 45-45-90 right triangle, but we can derive it.
An isosceles right triangle has two congruent legs forming the right angle and the hypotenuse opposite the right angle. The Pythagorean theorem works since it is a right angle.
Normally, the legs are a and b, and the hypotenuse is c, and we have
a^2 + b^2 = c^2
Here the legs are congruent, so we have a = b.
Substituting a for b, we have
a^2 + a^2 = c^2
2a^2 = c^2
c^2 = 2a^2
c = a√2
Answer: B) Hypotenuse = Leg ∙ √2
Answer:
progably B) Hypotenuse = Leg ∙ √2
Step-by-step explanation:
Timothy went to a baseball game. After the game, he wanted to ride the bus home. The red line and the blue line buses both stop at the stadium.
● A red line and a blue line bus both left the stadium at 4:00 p.m.
● Red line buses were scheduled to leave the stadium every 6 minutes.
● Blue line buses were scheduled to leave the stadium every 8 minutes.
If the buses run on schedule, when is the next time a red line and a blue line bus will leave together? Show your work.
Answer:
At 4:24 p.m.Step-by-step explanation:
We need to find the lowest number that is divisible by both 6 and 8.
LCM(6, 8) = 24So, next time is after 24 minutes and every 24 minutes after that.
4: 00 p.m. + 24 min = 4:24 p.m.Answer:
Solution :-For finding next time a red line and a blue line bus will leave together we will find LCM of 6 and 8.
LCM = (6,8) = 24
Now,
Let's find add the time to LCM
[tex] \tt \: 4 : 00 + 0 : 24 = 4 : 24[/tex]
PLEASE HELP ME WITH THIS. 5 POINTS
Answer:
I think b is not proportional
A group of eight people are attending the movies together.
a. Two of the eight insist on sitting side by side. In how many ways can the eight be seated together in a row?
b. Two of the people do not like each other and do not want to sit side-by-side. Now how many ways can the eight be seated together in a row?
Answer:
I think A
Step-by-step explanation:
An emergency medical technician earns $19.71 per hour. One month she earns a gross pay of $3326.06. How much did she make per week if it was a 4.5 - week month? Round off the answer to two decimal places also. How much did she make per week if it was a 4.5 - week month? Round off the answer to two decimal places.
Answer:
The emergency medical technician made $739.12 per week
Step-by-step explanation:
Given that:
Per hour pay = $19.71
One month earning of emergency medical technician = $3326.06
Weeks in the following month = 4.5
For per week income, we will divide the monthly salary by number of weeks in the month.
Per week income = [tex]\frac{3326.06}{4.5}[/tex]
Per week income = $739.12
Hence,
The emergency medical technician made $739.12 per week
A marketing researcher conducts a test to determine whether the number of chocolate chips per cookie differs significantly across two brands of chocolate chip cookies. A random sample of 10 Chewy Delight cookies reveals a mean of 6.4 chocolate chips per cookie and a standard deviation of 1.1 chocolate chips per cookie. A random sample of 11 Chips Destroy cookies reveals a mean of 5.6 chocolate chips per cookie and a standard deviation of 1.7 chocolate chips per cookie. Assuming unequal population variances, what is the calculated value for the associated test statistic?
Answer: the value for the associated test statistic is 1.2653
Step-by-step explanation:
Given that;
sample size one n₁ = 10
mean one x"₁ = 6.4
standard deviation one S₁ = 1.1
sample size two n₁ = 11
mean two x"₂ = 5.6
standard deviation one S₁ = 1.7
H₀ : μ₁ = μ₂
H₁ : μ₁ ≠ μ₂
Pooled Variance
sp = √( { [(n₁ - 1) × s₁² + (n₂ - 1) × s₂²] / (n₁ + n₂ - 2)} × (1/n₁ + 1/n₂))
we substitute
= √( { [(10 - 1) × (1.1)² + (11 - 1) × (1.7)²] / (10 + 11 - 2)} × (1/10 + 1/11))
= √( { [(9) × 1.21 + (10) × 2.89] / (19) } × (0.1909))
= √({[ 39.79 ] / 19} × (0.1909))
= √( 2.0942 × 0.1909)
= √( 0.39978 )
= 0.63228
Now Test Statistics will be;
t = ( x"₁ - x"₂) / sp
we substitute
t = ( 6.4 - 5.6) / 0.63228
t = 0.8 / 0.63228
t = 1.2653
Therefore the value for the associated test statistic is 1.2653
Which graph shows a line with a slope of 3?
Answer:
The first graph shows a slope of 3.
Step-by-step explanation:
If the slope is 3, it's actually 3/1 because of rise/run. So you find any point on the graph that's directly between two lines, like (-1,-5). Since the line is positive, you would go right one and up three. Then you see if that point is directly between two lines. The next point is (0, -2). If you did the same on the second graph, it wouldn't match up.
Please only correct answer
Answer:
second vala hai correct Answer
Answer:
[tex](\sqrt{x})^{2} = \sqrt{x^{2} }[/tex]
(0.5x - 0.6) + (0.75x - 0.1)
Answer:
1.25x-0.7
Step-by-step explanation:
0.5x−0.6+0.75x−0.1
=0.5x+−0.6+0.75x+−0.1 Combine Like Terms:
=0.5x+−0.6+0.75x+−0.1
=(0.5x+0.75x)+(−0.6+−0.1)
=1.25x+−0.7
Answer:
=1.25x−0.7
