Answer:
900 meters
Step-by-step explanation:
If the height of the building (unknown) is opposite of the angle of elevation (20°) and the distance from the building (402 meters) is adjacent to the angle of elevation, then we use the tangent function to find the height of the building:
tanθ=opposite/adjacent
tan(20°)=x/402
402tan(20°)=x
900=x
Therefore, the height of the skyscraper is 900 meters.
A game has a deck of cards with 10 red cards and 4 blue cards. You randomly choose one card and without replacing it choose another card. What is the probability of choosing a red card and then a blue card?
Answer:
21.97%
Step-by-step explanation:
On Friday, 134 MP3s were downloaded from an online music store. Of the 73 country songs. 52 were downloaded by women. Of the 61 alternative
songs. 47 were downloaded by men.
a. Make a two-way frequency table for the data.
b. What is the joint relative frequency of men who downloaded a country song?
c. What is the marginal relative frequency of people who downloaded an alternative song?
Answer:
13
Step-by-step explanation:
A cabinet door is 19 inches tall and 5 inches wide.
What is its area?
Answer:
95
Step-by-step explanation:
19 x 5 = 95
Which equation represents a linear function?
y – 2 = –5(x – 2)
x + 7 = –4(x + 8)
y – 3 = y(x + 4)
y + 9 = x(x – 1)
In a recent survey, three out of every five students said they would prefer going to a water park for the class trip.
If 105 students were surveyed, how many can be expected to prefer the water park?
here. hope this helps....
Find the area of figure 1.
8 units2
14 units2
10 units2
12 units2
Answer:
10 units ^2
Step-by-step explanation:
Area 1:
A = lw
= 2 * 5 = 10
What is the theoretical probability that an even number will be rolled on a number cube?
Answer:
1/2
Step-by-step explanation:
7.7 is what percent of 16? round to the nearest hundredth?
Answer:
7.7 x x/100 = 16
x100 x100
7.7x = 1,600
Divide by 7.7 on both sides:
X = 207.79 around 208
Answer:48.13%
Step-by-step explanation:
7.7÷16×100=48.125%
Rounded to nearest hundredth=48.13%
A number, X, rounded to 1 decimal place is 3,7
Write down the error interval for x,
Answer:
The error interval for x is:
[3.65,3.74]
Step-by-step explanation:
The number after rounding off is obtained as:
3.7
We know that any of the number below on rounding off the number to the first decimal place will result in 3.7:
3.65 3.66 3.67 3.68 3.69 3.70 3.71 3.72 3.73 3.74
( Because if we have to round off a number present in decimals to n place then if there is a number greater than or equal to 5 at n+1 place then it will result to the one higher digit at nth place on rounding off and won't change the digit if it less than 5 )
Hence, the error interval is:
[3.65,3.74]
Change the following mixed numbers to improper fractions
a) 4 3/8
b) 2 1/3
c) 5 2/5
Answer:
a) 35/8
b) 7/3
c) 27/5
Step-by-step explanation:
Answer:
a) 35/8
b) 7/3
c) 27/5
Step-by-step explanation:
*to solve multiply the whole number by the denominater and add that total with the numerator, keep the denominater the same
a)
[tex]4 \frac{3}{8} [/tex]
[tex] \frac{32 + 3}{8} = \frac{35}{8} [/tex]
b)
[tex]2 \frac{1}{3} [/tex]
[tex] \frac{6 + 1}{3} = \frac{7}{3} [/tex]
c)
[tex]5 \frac{2}{5} [/tex]
[tex] \frac{25+ 2}{5} = \frac{27}{5} [/tex]
Type the correct answer in each box. Use numerals instead of words.
For linear functions v and w, v(10) = 12, and w(10) = 9.
(V+ W/(10) =
(V-W(10) =
(VW(10) =
While Mike was visiting his sister in Arlington, he bought an aquarium that was marked down 60% from an original price of $100. If the sales tax in Arlington is 5%, what was the total cost of the aquarium?
Answer:
$42
Step-by-step explanation:
100 - 60% * 100 = $40
Since tax is 5%, therefore:
40 + 5% of 40 = $42
Thenks and mark me brainliest :))
Answer:
The answer is $42 but give the other guy brainliest.
Step-by-step explanation:
If there are 30 adults at a party and 21 kids at a party what is the fraction of adults at the party
Answer:
i think its 70 percent maybe
Answer:
72 fraction if polygon are expectations but when you divide it it will sepetate to 70 and add the 2 angles so it would be (72)
Step-by-step explanation:
HOPE IT HELPS!!
What is the value of b?
33°
7b-5°
10b-22°
Answer:
35 i think hope it helps you
thank you
Personal Finance
Which of these is an economic good?
a motel room
camping in a cave
fresh air
water from a spring
Answer:
Fresh air
Step-by-step explanation:
Which of these students is least likely to qualify for the national spelling bee in June?
Answer:
tony
Step-by-step explanation:
his fraction is the greatest meaning that it's also the lowest
what can 15 and 3 both be divided by
Answer: 15 and 3 can both be divided by 3 and 1
Answer:
tres y uno
Step-by-step explanation:
what is x and the measure of angle EHF
Answer:
x = 10, ∠ EHF = 110°
Step-by-step explanation:
7x and 11x are adjacent angles and sum to 180° , then
7x + 11x = 180
18x = 180 ( divide both sides by 18 )
x = 10
∠ EHF = 11x = 11(10) = 110°
Answer:
EHF = 110 deg
Step-by-step explanation:
From what it looks like 7x and 11x are being used as units of measurment. I can asssume a full circle adds up to 36x because 180deg adds up to 18deg.
If there were a number that was supposed to fill in for x it could be 0 because if the angles in this problem were 110 deg and 70 deg they would make 180 deg which is the straight line that the problem has.
Find an equation in slope interact form of the number of pizzas sold as a function of time for Mario's
Answer:
[tex]y = 3x+7[/tex]
Step-by-step explanation:
Given
See attachment for Mario's pizza table
Required
Determine the equation in slope intercept form
First, we calculate the slope of the table using:
[tex]m = \frac{y_2 - y_1}{x_2 - x_1}[/tex]
From the table, we have:
[tex](x_1,y_1) = (3,16)[/tex]
[tex](x_2,y_2) = (5,22)[/tex]
So, the slope is:
[tex]m = \frac{22 - 16}{5 - 3}[/tex]
[tex]m = \frac{6}{2}[/tex]
[tex]m =3[/tex]
The equation is then calculated as:
[tex]y = m(x - x_1) + y_1[/tex]
Where:
[tex](x_1,y_1) = (3,16)[/tex]
[tex]m =3[/tex]
So:
[tex]y = 3(x - 3) + 16[/tex]
Open bracket
[tex]y = 3x - 9 + 16[/tex]
[tex]y = 3x+7[/tex]
The water works commission needs to know the mean household usage of water by the residents of a small town in gallons per day. They would like the estimate to have a maximum error of 0.1 gallons. A previous study found that for an average family the variance is 5.76 gallons and the mean is 19.5 gallons per day. If they are using a 90% level of confidence, how large of a sample is required to estimate the mean usage of water? Round your answer up to the next integer.
Answer:
The right solution is "1559".
Step-by-step explanation:
The given values are:
Variance,
[tex]\sigma=\sqrt{5.76}[/tex]
[tex]=2.40[/tex]
Maximum error,
[tex]M.E=0.1[/tex]
At 90% confidence level,
[tex]\alpha=0.1[/tex]
According to the z-table, the critical value will be:
[tex]Zc=1.645[/tex]
Now,
The sample size will be:
⇒ [tex]n=(Zc\times \frac{\sigma}{E} )^2[/tex]
On substituting the values, we get
⇒ [tex]=(1.645\times \frac{2.4}{0.1} )^2[/tex]
⇒ [tex]=(1.645\times 24)^2[/tex]
⇒ [tex]=(39.48)^2[/tex]
⇒ [tex]=1558.67[/tex]
or,
⇒ [tex]=1559[/tex]
Problem 3. Ryan and four of his friends were going to the movies. The movie tickets cost $8 each, they
bought two popcorns at $5.75, four drinks at $2.25, and two boxes of candy for $1.75. How much money did
they spend total?
Write an exponential function in the form y=ab^xy=ab x that goes through points (0, 2)(0,2) and (3, 686)(3,686).
What is the volume of the rectangular prism?
Answer:
7/3 x 1 x 3 = 7 yd
Step-by-step explanation:
Multiply all 3 lengths by 1/3 then multiply all of them together since each and every one of those cubes are 1/3.
I need help I don’t get it
Answer:
its 2:3 if im not wrong
Step-by-step explanation:
Se seleccionan un grupo de datos de 120 personas donde 40 tienen una estatura promedio de 1.70 y 50 tienen una estatura de 1.68 y 10 están entre las dos estaturas: encuentre la probabilidad de los faltantes estén en las estaturas.
what are u saying ????????/?
i can't read spanish
please answer! it's more complicated than it looks!
Answer:
1. 360
2. Yes because in a regular hexagon all angles are congruent so the exterior angles are as well
3. (i) 60 (ii) 120
4.
(i) 1. 360 2. Yes because in a regular octagon all angles are congruent so the exterior angles are as well 3. (i) 45 (ii) 135
(ii) 1. 360 2. Yes because in a regular 20-gon all angles are congruent so the exterior angles are as well 3. (i) 18 (ii) 162
Step-by-step explanation:
Works for each polygon
1. First take the number of sides and subtract it by 2 then multibly that by 180
6-2=4x180=720
Then divide by the number of angles and subrtact that number by 180 to find the measure of one exterior angle
720/6=120
180-120=60
Then multiply by the number of exterior angles
60x6=360
2. Regular polygons always have equal angles so the exterior angles are as well
3. Put in your numbers from earlier
(i) 60 (ii)120
Hope this helps! :)
P.S. Feel free to mark brainliest :)
guess what answer correcly its a classic ill give you brailynes
Answer:
Um.. Hello there. You haven't added any links to this post so we cannot see what the question was. Sorry to bother you!
Please help meh plzzzzzz
Answer:
40 units²
Step-by-step explanation:
Surface Area of a square pyramid = b² + 2bl, b = 4, and l = 3
=> (4)² + 2(4)(3)
=> 40 units²
Hope this helps!
Answer:
4 x 4 = 16(area of base below *square*)
3 x 4 = 12, 12 divided by 2 ( x 1/2) = 6(area of one triangle side), 6 x 4 = 24(area of 4 triangles on all sides
Adding all given areas:
16 + 24 = 40 squared.
Can y’all help me with this I don’t understand stand
is it 10+8=18 is this it hopefully this helps
Answer:
Option C
Step-by-step explanation:
10 + n is the total number of computers Mr. James will sell this week, since he has already sold 10 computers and will sell n more. Because he wants to sell at least 18 computers, the correct symbol is ≥.
solve for y
1/8y-2/3=5.5
Answer:
y = 49 1/3
Step-by-step explanation:
1/8y-2/3=5.5
1/8y = 5.5 + 2/3
multiply both sides by 8:
y = 8(5.5 + 2/3) = 44 + 16/3 = 44 + 5 1/3 = 49 1/3