Answer:
what lesson in math is this??
given cosx = 60/61, find sin2x
Recall that for all x,
cos²(x) + sin²(x) = 1
So we have
sin(x) = ± √(1 - (60/61)²) = ± 11/61
Recall the double angle identity,
sin(2x) = 2 sin(x) cos(x)
From here, we get
sin(2x) = 2 (± 11/61) (60/61) = ± 1320/3721
In case you meant to ask about sin²(x), we get
sin²(x) = 1 - cos²(x) = 121/3721
Craig likes to collect vinyl records. Last year he had 10 records in his collection. Now he has 12 records. What is the percent increase in his collection?
Answer:
20%
Step-by-step explanation:
Yoooooo what’s 3 plus 8
Answer:
the answer is 11 cause it is easy
Answer:
I'm going to be honestly I used my fingers
my brain kinda died lol
Step-by-step explanation:
11
It takes 47 pounds of seed to completely plant a 7-acre field. How many pounds of seed are needed per acre?
Answer:
6.71428571429 (!!!)
OR
6.71 (Rounded to the nearest hundredth)
Step-by-step explanation:
PLEASE KNOW THAT I AM UNSURE.
I think it is 47 divided by 7, but the answer is very long and unrealistic, so it may be wrong. You could try rounding it to the nearest hundredth, which would be 6.71 pounds. Maybe wait for another answer, because this could be wrong!!
Which statement is true?
Louis is filling two 2-gallon buckets with water. The equation y = 0.4x models
the number of gallons of water in the first bucket after x minutes. This graph
shows the number of gallons of water in the second bucket after x minutes.
The second bucket will be completely filled 5 minutes before the
first bucket.
Second Bucket
B
2.0
The first bucket will be completely filled 5 minutes before the
second bucket.
1.75
The second bucket will be completely filled 11 minutes before
the first bucket.
1.5
$ 1.25
minutes before the
Gallons of Water
D
The first bucket will be completely filled
second bucket.
1.0
5 0.75
0.
0.25
1
7
8
5
Time (minutes)
Answer: 100
Step-by-step explanation:
valuable
Explain the steps you would take to find the quotient of 1/3 ÷ 4/3
.
Answer:
1/4
Step-by-step explanation:
rewrite the response: 1/3 times 3/4 (multiply by the reciprocal of the second #)
then multiply both numerators and denominators: 3/12 is what u get from mult.
then u simplify the fraction: 1/4
Answer:
First, rewrite the problem as a multiplication problem. Multiply 1/3 by the reciprocal of 4/3, which is 3/4. Then multiply to get 3/12. Simplifying gives the answer of 1/4.
Step-by-step explanation:
The population standard deviation for the heights of dogs, in inches, in a city is 7.5 inches. If we want to be 90% confident that the sample mean is within 2 inches of the true population mean, what is the minimum sample size that can be taken
Answer: 39
Step-by-step explanation:
Formula of sample size :
[tex]n=(\dfrac{z^c\times\sigma}{E})^2[/tex] , where [tex]z^c[/tex] = critical z-value for confidence level , [tex]\sigma[/tex] = population standard deviation , E = margin of error.
[tex]\Rightarrow\ n=(\dfrac{1.645\times7.5}{2})^2\\\\\Rightarrow\ n=(6.16875)^2=38.05347\approx39[/tex]
Hence, the minimum sample size that can be taken = 39
Given f(x)=-2x-5, solve for x when f(x)=3
Answer:
1
Step-by-step explanation:
We know x = 3
2 times 3 is = to 6
5 subtracted from 6 (6-5) = 1
Use the normal distribution to find a confidence interval for a proportion p given the relevant sample results. Give the best point estimate for p, the margin of error, and the confidence interval. Assume the results come from a random sample. A 95% confidence interval for p given that and . Round your answer for the point estimate to two decimal places, and your answers for the margin of error and the confidence interval to three decimal places
Answer:
aşk to your tuition teacher
If the runner travels 16 miles in 2 hours how many miles will she run in the first hour
Answer:
8 miles in the first hour
Step-by-step explanation:
Divide 16 by 2 to get the average speed of the runner. 16/2=8.
write the number below as a fraction in its simplest form
0.17 recurring
Answer:17/100
Step-by-step explanation:
Answer=8/45
Explaination
=
one approach is algebraically
x
=
0.177777
...
.
.
because one digit recurs multiply by 10 na dthen follow the method below
10x=1.777777777
x
=
0.17777777
Now,
9x=1.6
So,x=1.6/9=16/90
Hence,
x
=
8/
45
=
Need help ASAP please anybody
Answer:
A
Step-by-step explanation:
The answer to this is A lol
Eric plans to spend $10.50 on ice cream cones at $1.50 each. Write an equation whose solution is the number of ice cream cones he can buy. Use nn for the number of ice cream cones. You may asssume there is no tax. equation editorEquation Editor help (equations) (b) Solve your equation above for the number of ice cream cones nn.
Answer:
7
Step-by-step explanation:
10.50÷ 1.50≡n
10.50÷1.50≡7
7×1.50≡10.50
The equation is 10.50 ÷ 1.50 = n, and n = 7.
What is division?One of the four fundamental operations in mathematics is division; the other three are addition, subtraction, and multiplication. Simply put, division is the process of dividing a large group into smaller ones so that each group has the same number of items. It is an activity utilized for equivalent gathering and equivalent partaking in math.
Given total spend on ice cream = $10.50
cost of 1 ice cream = $1.50
let n be the total number of ice cream,
n = 10.50 ÷ 1.50
n = 10.50/1.50
n = 7
Hence the equation is n = 10.50 ÷ 1.50 and n = 7.
Lear more about division;
https://brainly.com/question/1575906
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6. The graph below displays the growth of a plant, in millimeters.
Growth of Plant
in one week, the plant grows 125 mm so the slope of the line is 12
The plant grows 125 mm each week so the slope of the line is 125.
The slope is one because the plant grows one mm each week.
100
Not here
Week
CLEAR ALL
Based on the given graph, explain the slope of the line in terms of the unit rate of the
plant's growth, in millimeters, per week.
Answer:
Step-by-step explanation:
B
From the graph the slope of a line is 100.
Given that, the graph below displays the growth of a plant, in millimeters.
What is slope of a line?The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.
The formula to find the slope of a line is slope = (y2-y1)/(x2-x1).
From the given graph, the slope is rise/run
= 400/4
= 100
Therefore, from the graph the slope of a line is 100.
To learn more about the slope of a line visit:
https://brainly.com/question/14511992.
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Write the equation of the line:
(-8,6); slope = 1/4
Neko made a triangular flag shown below. He wanted to attach it to the stick and then trim off the extra fabric so the flag would form an isosceles
triangle. By how many degrees was he off when he attached the triangle to the stick?
32
118
Ob
His flag ended up with base angles of 86 and 62. so the stick was 12 out of alignment from the correct position (both angles
74°).
His flag ended up with base angles of 86° and 52° so the stick was 22° out of alignment from the correct position (both angles
74°).
His flag ended up with base angles of 289 and 629, so the stick was 34 out of alignment from the correct position (both angles
62").
His flag ended up with base angles of 28 and 62° so the stick was 34 out of alignment from the correct position (both angles
34)
Od
Answer:
a. His flag ended up with base angles of 86° and 62°. so the stick was 12° out of alignment from the correct position (both angles
74°).
Step-by-step explanation:
First, let's calculate the measures of the base of the angles Neko ended up with.
The measure of the angle adjacent to the exterior angle = 180° - 118° = 62°
The measure of the other base = 180° - (62° + 32°) = 180° - 94° = 86°
So, Neko ended up with 86° and 62°.
To make a flag that is in the form of an isosceles ∆, it means the measure of the two bases most be equal to each other.
Since he measures the tip of the flag to be 32°, the measure of the remaining two equal bases ought to be (180 - 32)/2 = 148/2 = 74° each.
The difference between 74° and what he ended up with = 86 - 74 = 12°.
74 - 62 = 12°.
Therefore, the stick was 12° out of alignment.
The right option is a.
The contents of Dana’s box of muffins are shown. Write each ratio in
three different ways. (Example 1)
5. banana nut muffins to corn muffins
6. corn muffins to total muffins.
5.3:1
6.2:1
hope this is the answer your looking for.....
whats the answer to
9(w-6)=-36
w = 2
Step-by-step explanation:Hi there !
9(w - 6) = - 36
9w - 54 = - 36
9w = 54 - 36
9w = 18
w = 18 : 9
w = 2
Good luck !
Determine which is the better deal.
Option A- 6 granola bars for $6.48
Option B- 5 granola bars for $5.50
Explain why.
Answer:
option A, because when you get the common denomenator of 30, option A is less than option B by .60 cents
Step-by-step explanation:
Lisa mixed 1 part of apple juice and 2 parts of vanilla yogurt to make a smoothie. How many parts of apple juice did Lisa mix with each part of vanilla yogurt?
one over three
two over five
one over two
two over one
Answer:
1/3
Step-by-step explanation:
There are 1+2=3 total and since there is 1 apple juice it is 1/3
Answer:
1/3
Step-by-step explanation:
How do I find each interior angle of a regular 14-gon
Answer:
look it up on safari if you got an Iphone
Step-by-step explanation:
Lavonda took out a $7,500 loan with an APR of 3.875\% and agreed to pay it back monthly over 6 years
What is her monthly payment?
How much will she pay back in total?
What is the finance charge?
Answer:
Step-by-step explanation:
Given data
principal=$7500
rate= 3.875%= 0.03875
time =6years
The expression for the final amount for a simple interest is
A=p(1+rt)
A=7500(1+0.03875*6)
A=7500(1+0.2325)
A=7500(1.2325)
A=9243.75
$19243.75
1. What is her monthly payment?
given that it is spread over 6 years
there are 12*6 months= 72months
monthly pay=9243.75/72= $128.38
2. How much will she pay back in total?
=$19243.75
3. What is the finance charge?
the finance charge is the interest which is
$19243.75-$7500=$11743.75
All Insurance companies charge the same rate for a glven person.
True
False
Answer:
false i think
Step-by-step explanation:
How to Solve X-3/8= 7/16
Answer:
x=13/16
Step-by-step explanation:
The question is asking us to isolate the variable x. This means that we need to add -3/8 to both sides of the equation. Because the denominators of the fractions 3/8 and 7/16 are not the same, we need to find a common denominator, which is 16. (So we change 3/8 to 6/16 because the two fractions are equal). Now that we have the fractions 6/16 and 7/16 we can add the two to get x=13/16
The ratio of hydrogen to oxygen in a plant sample is 18:12 the sample has 42 units of oxygen how much hydrogen does the sample have
A 28
B 30
C 48
D 63
what is 4^5 written in expanded form?
A. 4+4+4+4+4
b. 4.4.4.4.4.4.
c.5+5+5+5+5
d. 5.5.5.5.
Answer:B
Step-by-step explanation:
I took the quiz March 2021 end it can’t be d. Because is the exponent so it’s me because for is the base
$800 bonus then she makes $250 a day. What is the y-intercept?
Answer:
The y-intercept is 800
Step-by-step explanation:
Answer: I'm pretty sure the y intercept is $800 dollars, because that is the starting amount.
Step-by-step explanation:
y= 250x+800
the slope is 250 and the y- intercept is 800
Pampered pooch charges $5 for 1 hour of doggie daycare,$10 for 2 hours and $15 for 3hours what is the unit rate?
Step-by-step explanation:
kajsispoduerndbtwwjwtj
Answer:it 5
Step-by-step explanation:
it 5 because it going up by 5
Put the following equation of a line into slope-intercept form
2x - 2y = 6
Answer:
Y=-2x+3
Step-by-step explanation:
2x-2y=6
2y=-2×+6
y=-2×+6/2
y=-2x+3
The equation of a line into slope-intercept form is y = x - 3
The standard form of an equation in slope-intercept form is expressed using the equation y = mx + b
m is the slope of the line
b is the y-intecept
Given the equation 2x - 2y = 6
Divide through by 2
x - y = 3
-y = -x + 3
Multiply through by -1
-(-y) = -(-x) + (-3)
y = x - 3
Hence the equation of a line into slope-intercept form is y = x - 3
Learn more here: https://brainly.com/question/17003809
Jamal hiked on two trails. The first trail was 8 1/3 miles long, and the second trail was 1 3/5 time as long as the first trail. How many miles did Jamal hike ? Enter as a mixed number in simplest form
Answer:9 14/15
Step-by-step explanation:
hope that helped