The picture below shows a portion of a river dam:
Which of the following can be used to calculate the height of the river dam? (6 points)
220 cos 40°
220 divided by tan 40 degrees
220 sin 40°
220 divided by cos 40 degrees
Answers
If you are starting with the angle of 40 degrees, you have an adjacent side and hypotenuse. Therefore, it is a cosine relationship.
We can write:
cos(40) = adj / hyp
cos(40) = x / 220
To solve for x, simply multiply 220 by the cos(40).
You can write it as: 220 cos(40)
Good luck,
MrEQ
Answer:
220cos40
Step-by-step explanation:
cos40=x/220
(220)cos40=x/220(220)
220cos40=x
Related Questions
During a basketball game, the East Middle School Tigers scored 42 points from two-point baskets. How many two-point baskets did they make?
84
14
21
42
Answers
Answer:
21 two point basket.
Step-by-step explanation:
It is given that During a basketball game, the East Middle School Tigers scored 42 points from two-point baskets. It means
Total score = 42 points
Score for each basket = 2 point
Let total number of two-point baskets be x. So,
Total score = 2x points.
[tex]2x=42[/tex]
Divide both sides by 2.
[tex]\dfrac{2x}{2}=\dfrac{42}{2}[/tex]
[tex]x=21[/tex]
Hence, they make 21 two point basket.
Hey
PLEASE HELP ME
Limited time!!!!
Blank 1: 38,35,65,15
Blank 2: purchasing 12 apps, purchasing 35 apps, spending $35, spending $12
Blank 3: Has 12 new on her phone , Has $35 remaining on her card , Has 35 new apps , Has $12 remaining on her card.
CHOOSE ONE ONLY FOR EACH BLANK.
THX
Answers
a(12) = 50 - 1.25(12) = your answer for blank 1
For blank 2: because x represents the number of apps on her phone, and x is given 12 for this problem, she bought 12 apps.
For blank 3: You would mention how many apps she got twice, so not the first option or the third option. It should be the answer from the first blank because the equation represents how much money is in her account.
HELP!!! WILL MARK BRAINLIEST IF YOUR RIGHT!!! LOOK AT THE IMAGE FOR THE QUESTION AND ANSWER CHOICES
Answers
√3 ≈1.732, 17/10=1.7
convert all the fraction into decimals, you'll see C is the closest to 1.732
Find two numbers, if
Their sum is 3/5 and their difference is 7 1/5
Answers
.. x + y = 0.6
.. x - y = 7.2
Add these equations to get
.. 2x = 7.8
.. x = 3.9
Then you can find y from
.. y = 0.6 -3.9 = -3.3
The two numbers are -3.3 and 3.9.
Answer:
3.9 and -3.3
Step-by-step explanation:
helpppppppppppppppppppp
Answers
For the function:
y = exp (x) -4
We see that for x = 0 we have:
y = exp (0) -4
y = 1-4
y = -3
Which is consistent with the graph.
Answer:
y = exp (x) -4
option 4
Check my answers please?
1. What are the first five terms of the sequence given by the formula a_n=6n+1
a. 7,13,19,25,31
b.1,7,13,19,25
c. 6,12,18,24,30 <---
d.13,19,25,31,37
3. Write an explicit definition for the sequence -3, 1, 5, 9,...
a. a_n=-3+4(n-1)
b. a_n=-3+ 4n <---
c. a_n= -3+(n-1)
d. a_n= -3+4(n+1)
7. what is the 12th term of the sequence 20,16,12,...
a. -30
b. -20
c. -28
d. -24 <----
8. Find the missing term of the arithmetic sequence 20, __, 32,...
a.42
b.18
c.34 <----
d. 36
10. what is the 10th term of the sequences 625,125,25,...
a. 1/3,125
b. 1/
Answers
3. Correct answer is a (a(n)=-3+4(1-1)=-3).
7. The pattern is to reduce the previous value by 4, thus the 12th term of the sequence is -24 (a(n)=20 - 4(n-1)=20 - 4(12-1)=-24).
8. Missing term is 26 (32+20=52; 52/2=26).
10. Pattern is 625/1=625; 625/5=125; 125/5=25; 25/5=5, thus. the 10th term is 1/3125 (answer a).
I need help with this one
Answers
So this is False
Which statement best describes how to determine whether f(x) = x3 + 5x + 1 is an even function?
Answers
→ Even: f(x) = f(-x) → Odd: -f(x) = f(-x)
If -f(x), then -f(x) = -x³ + 5x If x = -x, then f(-x) = -x³ + 5x
Since -f(x) = f(x), the function is therefore odd.
The answer is B) Determine whether (–x)^3 + 5(–x) + 1 is equivalent to x^3 + 5x + 1
HELP!!!
Draw a tree diagram illustrating the events, two cards are drawn in succession with replacement from a standard deck of 52 and its suit is observed.
I got 50 branches but it's wrong and I'm not sure what I'm doing incorrectly.,
Answers
Your weekly allowance is $25.you spent 6% of the budget on a new video game . how much did you spend on the video game ?\
Answers
Allowance
----------------------------------------------------------
$25
----------------------------------------------------------
Video Game
----------------------------------------------------------
6% 0f 25
= 0.06 x 25
= $1.50
----------------------------------------------------------
Answer: $1.50 were spent on video game
----------------------------------------------------------
How much would Kendra have in her account after three years if she started with $500 and earned 2 percent interest compounding annually?
Answers
A time period of 3 years would be $30.
I hope I helped you!
Answer:530.6
Step-by-step explanation:
Which calculation can be used to find the value of y in the equation y^3 = 27?
y equals 27/3
y equals cube root of 27
y equals square root of 27 divided by 3
y equals square root of 27
Answers
another answer is
y equals square root of 27 divided by 3
Provided it is square root of (27 divided by 3)
Based on the given information, choose the abbreviation of the postulate that supports the conclusion that ΔWAS ΔNOT.
AHH! HELP!!
If the conclusion cannot be drawn from the given information, then choose "not possible."
Given:
WS = NT, AS = OT, S = T.
Answers
If you mark what you know in the diagram, you will see that you have a SIDE, then an ANGLE, and finally another SIDE.
Therefore, you can use ASA to prove that they two triangles are congruent.
Good luck,
MrEQ
Complete the synthetic division problem below. What is the quotient in polynomial form?
Answers
We bring down the first number inside the box, 2, unchanged.
_______
-1| 2 7 5
_______
2
Now we multiply that 2 by the number outside, -1:
_______
-1| 2 7 5
-2
2
Now we add the two numbers in the middle column:
________
-1| 2 7 5
-2
2 5
Multiply the 5 we brought down by the -1:
________
-1| 2 7 5
-2 -5
2 5
Add the numbers in the last column:
________
-1| 2 7 5
-2 -5
2 5 0
The 3 numbers under the box represent the coefficients of x² and x, as well as the constant. When we finish, we no longer have an x², but start at the next level down, which would be x. 2 would be the coefficient of x and 5 would be the constant, with 0 remainder.
Corey is out on the roads doing a long run, and also doing some mental calculations at the same time. corey's pace is 3 strides per second, and each stride covers 5 feet. (a) how much time does it take corey to cover a mile? (b) if corey's stride increased to 5.5 feet per step, how much time would be needed to cover a mile? (c) at five feet per step, how many steps would corey need to run the marathon distance, which is 26 miles and 385 yards?
Answers
B. 320 seconds or 5 minutes and 20 seconds
C. 27687 steps
There are 5280 feet per mile. In A, 3 strides per second at 5 feet gives us 15 ft per second. 5280/15 = 352 seconds. In B, 3 strides per second at 5.5 feet gives us 16.5 feet per second. 5280/16.5 = 320 seconds. In C, we calculate the total feet to divide by 5 per step. multiply 26 miles by 5280 to get feet per mile and multiply 385 by 3 to get the feet per yard. Add them together. then divide by 5. 26(5280) + 385(3) =138435. 138435/5 = 27687 steps
Does 6(x+2)>x-3 have a solution
Answers
To see if this has a solution, we can simplify it.
6x + 12 > x - 3
5x + 12 > -3
5x > -15
x > -3
Yes, there are solutions to this problem. Any number greater than -3 would match the inequality requirements.
Hope this helps!
n quadrilateral LMNO, LO ∥ MN. What additional information would be sufficient, along with the given, to conclude that LMNO is a parallelogram? Check all that apply. ML ∥ NO ML ⊥ LO LO ≅ MN ML ≅ LO MN ⊥ NO
Answers
Answer: The correct options are
(A) ML ∥ NO,
(C) LO ≅ MN.
Step-by-step explanation: Given that in quadrilateral LMNO, LO ∥ MN.
We are to select the correct additional information that would be sufficient along with the given information to conclude that LMNO is a parallelogram.
PARALLELOGRAM: A parallelogram is a quadrilateral if ine of the following conditions are satisfied:
(i) Two pairs of opposite sides parallel
or
(ii) one pair of opposite sides parallel and congruent.
The given condition is
LO ∥ MN.
So, the other additional sufficient condition will be
either the other pair of opposite sides parallel, i.e., ML ∥ NO,
or
the same pair of parallel sides are congruent, i.e, LO ≅ MN.
Thus, the correct statements are ML ∥ NO and LO ≅ MN.
Option (A) and (C) are correct.
Answer:
a and c
Step-by-step explanation:
PLZ HELP QUICKLY AND CORRECT GETS BRAINLY!
Solve for x: −3|x − 3| = −6
Answers
A triangular playground has angles with measures in ratio 8: 3: 9 what is the measure of the smallest angle
Answers
20x = 180
x = 180/20
x = 9
The smallest angle is: 3×9 = 27 degrees
Note: 180 degrees is the sum of angles in a triangle
Answer:
The measure of the smallest angle is 27°
Step-by-step explanation:
The triangle has angles with measure ratio 8:3:9, so the sizes of the angles are going to change depends on the ratio.
Let’s name the common value as “α”.
Basing on the angle-sum property, we already know that the sum of the angle in a triangle is 180°.
The measure of each one are:
8α, 3α, 9α
The sum of these is 180°.
Then,
8α + 3α + 9α = 180°
Let’s sum similar values:
20α =180°
α= 180°/20
α= 9
Replacing values, we going to find the measure of each angle:
8(9) = 72°
3(9) = 27°
9(9) = 81°
The measure of the smallest angle is 27°
PLEASE HELP ME ON THIS QUESTION AND DON'T FORGET TO EXPLAIN!!!
Please show ur work and correct answer will get brainliest
Answers
f(x) [3rd one down] added to the middle g(x) should give you h(x)
f(x)_down 3 + g(x)_middle_g(X)_second column = -2x + 3 + 7x - 9 Now collect the like terms.
f(x) + g(x) = 5x - 6 which is h(x).
These guys sure believe in reading problems.
What happens to the surface area of a rectangular prism when each of the dimensions is doubled? (1 point) i?
Answers
Final answer:
The surface area of a rectangular prism increases by four times when each of the dimensions is doubled because surface area scales in proportion to the square of the linear dimensions.
Explanation:
When the dimensions of a rectangular prism are doubled, the surface area of the prism increases by a factor of four. This is because the surface area is proportional to the square of the linear dimensions. If the length, width, and height of the prism are doubled, the new surface area (A') compared to the original surface area (A) is calculated as follows:
A' = 2l × 2w + 2l × 2h + 2w × 2h
A' = 4(lw + lh + wh)
A' = 4A
Thus, if each dimension is doubled, the surface area increases by four times.
helppppp meeee with thisssss
Answers
slope is 1 and the y intercept is -5
remember the equation y=mx+b
we have just x, so the slope is 1
Someone please help me find x and y for problems #19 and 20!!! Please explain if you can
Answers
19) you have 40 for one leg, 10 for another leg and 50 for a hypotenuse. To find x, the altitude, you need to set up the ratio, 10/x=x/40. You can multiply x by both sides. 10=x^2/40. You can also multiply 40 by both sides. 400=x^2. Square root both sides. 20=x. You now have one variable, let's solve for y now :0. Using the biggest triangle, we have 50 as the hypotenuse. You can use the Pythagorean Theorem to help you out. We first need to find the value of one of the legs, so 40^2+20^2=c^2. This gets me to 2000=c^2. Take the square root of both sides. I get c=44.72 (be aware that I'll always round to the nearest hundredth for every ANSWER! It's a bit more accurate). Now to find the leg of the biggest triangle. y^2+44.72^2=50^2 which is y^2+1999.8784=2500. Subtract 1999.8784 from both sides to get y^2=500.1216. Take the sqrt or square root of both sides. (It's rounded) y=22.36. That's question 19 for ya.
20) Look at this now! Doesn't it look familiar? Let's start with y. Start with the ratio '21/y=y/4'. Use my ways from before to get (you can pretend the same thing is happening from prob. 19)), '21=(y^2)/4' '84=y^2' 'y=9.17'. That's y, now x. Let's find the leg of the big triangle first. PYTHAGOREAN THEOREM!!! 21^2+9.17^2=c^2, 441+84.0889=c^2,
c^2=525.0889, c=22.91. We can finally figure out x. 22.91^2+x^2=25^2, 524.8681+x^2=625, x^2=100.1319, x=10.01.
Hope you've enjoyed this learning experience about geometric means and whatnot!!! :3
n a recent survey of 50 10-year olds, it was discovered that 14 liked both McDonald's and Burger King. Overall, 36 of the children surveyed liked McDonald's and 24 liked Burger King. How many of the children surveyed did not like either restaurant? Please show your statistical thinking to support your answer.,
Answers
if f(x)=5x-1 thenF-1(x)
Answers
William works at a nearby electronics store. He makes a commission of 6 % 6%6, percent on everything he sells. If he sells a computer for $ 7 6 4 . 0 0 $764.00dollar sign, 764, point, 00, how much money does William make in commission?
Answers
$ 764 ----> 100%
$ x --------> 6%
We clear the value of x:
x = (6/100) * (764)
x = 45.84 $
Answer:
William makes $ 45.84 in commission
Answer:
x = 45.84 $
late but i need points
Step-by-step explanation:
you owe $1,945.61 on a credit card that has an 11.2% APR. the minimum payment due is $156.00. you decide to pay $300.00. how much do you save in interest by paying more than the minimum, assuming you make both payments at the beginning of the month?
$,
Answers
Answer:
$1.344
Step-by-step explanation:
APR represents annual percentage rate, and it specifies the amount of interest that would accrue on a loan over a specified period.
Extra amount paid = $300 - $156 = $144
Annual interest that would have been paid on the extra $144 = $144 * 11.2/100= $16.128
this amount on monthly basis is $16.128/12 = $1.344
Identify the GCF of 10x4y3 − 5x3y2 + 20x2y.
10x2y
10x3y
5x2
5x2y
Answers
The strategy for expressions with variables is still to factor out the greatest term.
For [tex]10x^4y^3-5x^3y^2+20x^2y[/tex], we look for the largest factor in each term.
For [tex]10x^4y^3[/tex], the largest factors are [tex]x^4[/tex] and [tex]y^3[/tex]. We'll come back to the coefficients in a minute.
For [tex]-5x^3y^2[/tex], the largest factors are [tex]x^3[/tex] and [tex]y^2[/tex]. Now, looking back to the previous term and also considering the coefficients, the largest factor of the two is [tex]5x^3y^2[/tex]. You could rewrite the first term as [tex](5x^3y^2)(2xy)[/tex] and the second term as [tex]-1(5x^3y^2)[/tex].
Now, we consider the last term, [tex]20x^2y[/tex]. The largest factor common to the two other terms is [tex]5x^2y[/tex].
And that's our final answer for the GCF (answer D).
The GCF of the given expression is:
[tex]5x^2y[/tex]
Step-by-step explanation:The GCF ( greatest common factor ) is the greatest divisor which divides all the terms completely.
Here we have the expression as:
[tex]10x^4y^3-5x^3y^2+20x^2y[/tex]
Here we see that the factors of the first term are:
[tex]10x^4y^3=2\times 5\times x\times x\times x\times x\times y\times y\times y[/tex]
The factor of the second term is:
[tex]-5x^3y^2=-1\times 5\times x\times x\times x\times y\times y[/tex]
and the factor of the third term is:
[tex]20x^2y=2\times 2\times 5\times x\times x\times y[/tex]
i.e. the factor which is common to all the three terms are:
[tex]5\times x\times x\times y=5x^2y[/tex]
Hence, the GCF is: [tex]5x^2y[/tex]
What is the simplest form of root 3.025
Answers
Explanation:
1) By convention if you do not mention the index of the root it is square root.
2) By definition the square root of a number x is the numberwhose square is the original number, i.e.
√3025 = 55 because 55^2 = 3025.
3) 3025 is a perfect square because it is the square of a whole numbe.
4) It is easy to find the square root of a perfect square, but if the number is not easily reknownm as a perfect square you will have to probe with several numbers until finding the square root.
For example, you might easily realize that 50^2 is 2500, and that 60^2 is 3600, so you start testing numbers greater thatn 50 and less than 60 until you get 55^2 = 3025.
5) How can you simplify a radical? If you know the properties of radicals you can simplify a radical easily.
You start by decomposing 3025 into its prime factors.
That will result into:
[tex]3025 =5^2{11}^2[/tex]
Then, by radical properties:
[tex] \sqrt{5^2{11}^2} = \sqrt{5^2} \sqrt{{11}^2} =(5)(11)=(55)[/tex]
So, the simplest form of √3025 is 55.
A family on vacation drives 123 miles in 2 hours, then gets stuck in traffic and goes 4 miles in the next 15 minutes . The remaining 191 miles of the trip take 3 3/4 hours. What was their average rate of speed to the nearest tenth of a mile per hour ?
Answers
The average speed of an object is the total distance traveled by the object divided by the elapsed time to cover that distance.
Total distance traveled = 123 miles + 4 miles + 191 miles = 318 miles
Total time taken = 2 hours + 15 minutes + [tex] 3\frac{3}{4} [/tex] hours
= 2 hours + [tex] \frac{15}{60} [/tex] hour + [tex] \frac{15}{4} [/tex] hours
= [tex] 2+\frac{1}{4}+\frac{15}{4} [/tex] hours
=[tex] 2+\frac{16}{4} [/tex] hours
= 6 hours
Average speed = Total distance [tex] \div [/tex] Total time
= [tex] \frac{318}{6} [/tex] mile per hour
= 53 mile per hour.
The average speed of an object is the total distance traveled by the object divided by the elapsed time to cover that distance.
Total distance traveled = 123 miles + 4 miles + 191 miles = 318 miles
Total time taken = 2 hours + 15 minutes + [tex] 3\frac{3}{4} [/tex] hours
= 2 hours + [tex] \frac{15}{60} [/tex] hour + [tex] \frac{15}{4} [/tex] hours
= [tex] 2+\frac{1}{4}+\frac{15}{4} [/tex] hours
=[tex] 2+\frac{16}{4} [/tex] hours
= 6 hours
Average speed = Total distance [tex] \div [/tex] Total time
= [tex] \frac{318}{6} [/tex] mile per hour
= 53 mile per hour.