Answer:
30 ft
Step-by-step explanation:
We can use the given information to set up a ratio...
[tex]\frac{Mark's\ height}{Mark's\ shadow}=\frac{Tree's\ height}{Tree's\ shadow}[/tex]
[tex]\frac{6\ ft}{4\ ft}=\frac{x}{20\ ft}[/tex]
We can solve this ratio using cross multiplication (multiply the numerator of the first fraction by the denominator of the second and the numerator of the second fraction by the denominator of the first):
120 = 4x
Divide both sides by 4
x=30 ft
Compare each side of the equation 65 ÷ 5 = 87 ÷ 3 to determine if it is true or false.
[tex]65 \div 5 = 87 \div 3 \\ 15 = 29[/tex]
So, False
Answer:
The equation is false
Step-by-step explanation:
65 ÷5 = 13
87 ÷ 3 = 29
13 and 29 are not equal thus making the equation false.
2x² + 3 = 39 extracring square roots
Answer:
x=9
Step-by-step explanation:
first, subtract 3 from both sides so 2x^2=36, then, divide both sides by 2 so x^2=18 and divide 18 by 2 and 9^2=18
Answer:
x = ± 3[tex]\sqrt{2}[/tex]
Step-by-step explanation:
2x² + 3 = 39 ( subtract 3 from both sides )
2x² = 36 ( divide both sides by 2 )
x² = 18 ( take square root of both sides )
x = ± [tex]\sqrt{18}[/tex] = ± [tex]\sqrt{9(2)}[/tex] = ± ( [tex]\sqrt{9}[/tex] × [tex]\sqrt{2}[/tex] ) = ± 3[tex]\sqrt{2}[/tex]
HELPPPPP MEEEEE PLEASEEEE
Answer:
I don't know sooooooooop
mark me as brainliest ok understood
What are the next two numbers in the pattern
Answer:
64, 128..
Step-by-step explanation:
each number gets doubled to get the next number
Select the three equations that match the model.
9+?=14
?=14-9
9=14-?
all others do not work
2) Look at the sequence below. List the next three terms of the sequence. 4, 8, 16, 32,...
Answer:
64, 128, 256
Step-by-step explanation:
Answer: 4, 8, 16, 32, 64, 128, 256
The other 3 terms of the sequence are 64, 128, 256, which means that the full sequence is 4, 8, 16, 32, 64, 128, 256. Each number was multiplied by 2. 4 * 2 = 8. 8 * 2 = 16. 16 * 2 = 32, etc...
Step-by-step explanation:
Hope this helps.
Find the value of x.
Answer:
75° = x°
Step-by-step explanation:
there are 4 right angles
so with the line being linear, the angle on each side is 15°. so you take
90° (right angle) - 15° (the inside angle) = 75°. or the outside angle
do 75 + 15 to check
Answer:
x=75°
Step-by-step explanation:
AG`D=90°
FG'D =15 vert. opp.angl
90-15=75
pleas help it is in the screenshot
Answer:
10) 8.4
11) 25.6
Step-by-step explanation:
10)[tex]\cfrac{7}{10}=\cfrac{x}{12}[/tex]
[tex]x=12\times \cfrac{7}{10}[/tex]
[tex]=8.4[/tex]
11)[tex]\cfrac{8}{5} =\cfrac{x}{16}[/tex][tex]5\times x=8\times 16[/tex]
[tex]\cfrac{5x}{5} =\cfrac{128}{5}[/tex]
[tex]x=25.6[/tex]
Hope it helps! :)
Line m passes through points (10, 4) and (1, 6). Line n passes through points (1, 11) and (10, 9). Are line m and line n parallel or perpendicular
Answer:
Parallel
Step-by-step explanation:
Answer:
parallel
Step-by-step explanation:
.
What is the name of the perimeter of a circle?
Length
Circumference
Perimeter
Width
Answer: circumference
Step-by-step explanation: you’re welcome
Answer:
circumference because it
Can someone Help me with this pls
Answer:
You need to add 30+21=51 Students
in the calendar analogy, what month did Eukaryotes appear? A. may B. february C. July D. December
Answer:
B. February
Step-by-step explanation:
I just took a test on this, and the answer was February. Hope this helped and wasn't too late.
Compare the solution strategies used by Kaleigh and Destiny. What do you notice about the properties each student used? Compare the solution strategies used by Kaleigh and Destiny. What do you notice about the properties each student used?
Kaleigh
4(3x + 2) = 8x + 4
12x + 8 = 81 +4
4x = -4
x = -1
Destiny
4(3x + 2) = 8x + 4
4(3x + 2) 8x + 4
4
4
3x + 2 = 2x + 1
x = -1
Answer:
who's asking?
Step-by-step explanation:
PLSSS ANSWER ITS FOR A TIMES TEST.......Lee's bank balances at the end of months 1, 2, and 3 are $1600, $1640, and $1681.
What will Lee's balance be at the end of month 5?
solve this on a piece of paper so it can be great to understand thankyou.
8x+4y=8 and 2x+y=4
Answer:
1. x = -1/2y + 1
y = 2x + 2
2. x = -1/2y + 2
y = 2x + 4
Describe the direction in which each object will accelerate. If the object won’t accelerate, write “no acceleration.” Explain what might be happening to each object in terms of its overall motion. (Will give the right answer brainillesit)
Answer:
The object will have a positive acceleration of 100N and it will travel up.
Step-by-step explanation:
300N - 200N = 100N
Therefore, 300N has greater value making the air balloon travel upwards toward the sky.
Which graph represents a system of equations with one solution?
Step-by-step explanation:
none of the graphs that we can see here.
the first are 2 parallel lines. they never cross, so there is no solution at all.
and the second one is seemingly only one line. well a line goes on infinitely, and every point on it is a solution to the line equation. so, this has infinite many solutions.
Please need the answer
Answer:
A. True
B. True
C. False
Step-by-step explanation:
Hope that helps!
Plls help
What is DE
Answer:
DE= 4.24
Step-by-step explanation:
A^2 + B^2 = C^2 Pythagorean theorem
(3)^2 + (3)^2 = C^2
9 + 9 = C^2
18 = C^2
√18 = √C^2
4.24264 = C
Solve for x and y.
You will have to show your work to get brainliest!
Answer:
For ∆1 , x = 20 , y = 10√2
For ∆2 , x = y = 11
Step-by-step explanation:
Here in the first right angled triangle one of the angles is 45°. And one of the known side is 20 . We need to find out the value of x and y.
Since two angles are 90° and 45° , therefore the third angle will be 45° . And as we know that the sides opposite to equal angles are equal. Therefore ,[tex]\rm\longrightarrow \underline{\underline{ x =20}}[/tex]
Again , we use ratio of sine to find y , as ,
[tex]\rm\longrightarrow sin45^o =\dfrac{p}{b}\\ [/tex]
[tex]\rm\longrightarrow \dfrac{1}{\sqrt2}=\dfrac{20}{y}\\ [/tex]
[tex]\rm\longrightarrow y =\dfrac{20}{\sqrt2}=\dfrac{2\times 10}{\sqrt2}\\ [/tex]
[tex]\rm\longrightarrow \underline{\underline{ y = 10\sqrt2}} [/tex]
[tex]\qquad\rule{200}2[/tex]
Again , in the second Triangle , we may use ratio of sine to find the value of y , as ;
[tex]\rm\longrightarrow sin45^o =\dfrac{p}{b}\\ [/tex]
[tex]\rm\longrightarrow \dfrac{1}{\sqrt2}=\dfrac{y}{11\sqrt2}\\ [/tex]
[tex]\rm\longrightarrow y =\dfrac{11\sqrt2}{\sqrt2}\\ [/tex]
[tex]\rm\longrightarrow \underline{\underline{ y = 11}} [/tex]
Again , we know that the sides opposite to equal angles are equal . Therefore here ,[tex]\rm\longrightarrow \underline{\underline{ x =11}}[/tex]
What does it mean to say a polynomial is in factored form.
b
Step-by-step explanation:
Need answers for 3 and 4 please.
Solve for y
2(y + 2) = 62(y+2)=6
Answer:
y=-8
Step-by-step explanation:
2y+4=62y+124=6
2y-62y=124-4=6
-60y=120=6
divide both side by -60
y=120/-60=6
y=-2=6
y=-2-6
y=-8
3. A scientist recorded the movement of a pendulum for a period of time. The scientist began recording when
the pendulum was at its resting position. The pendulum then moved right (positive displacement) and left
(negative displacement) several times. The pendulum took 5 s to swing to the right and then return to its
resting position. The pendulum's furthest distance to either side was 7 in. Graph the function that represents
the pendulum's displacement as a function of time.
(a) Graph the function (include at leaſt one full cycle).
(b) Write an equation to represent the displacement of the pendulum as a function of time.
Anserr:
put c trust, its always the right answer
Jenny works at Publix where she makes $10 an hour. she works 5 hour ships 6 days a week . Create an expression that shows how much money jenny makes in 3 weeks
Answer:
(10)(5)(18)
Step-by-step explanation:
10= $/hr
5 = shifts
18 = number of days
Answer:
Step-by-step explanation:
$10/hr x 5 hrs x 6 days x 3 wks
10 x 5 = 50
50 x 6 = 300
300 x 3 = 900
She earns $900 in 3 wks.
Um cant figure out the second question
Answer:
£15
Step-by-step explanation:
There are 3 ways to get 7 out of the 12 possible outcomes, so the probability a player will win 30p is 1/4. That is a player will have expected winnings of (1/4)(30p) = 7.5p each time the game is played.
The school gains 20p from each player, but has an expected payout to the player of 7.5p, so the net gain per game to the school is ...
20p -7.5p = 12.5p
The gain to the school when 120 people play is ...
(120)(12.5p) = 1500p = £15 . . . . expected to be raised
Enter answer as a decimal ex: 42.53
Answer:
The probability of pulling a green marble is 0.58 (58%).
Step-by-step explanation:
Total marbles: 36
Purple marbles: 15Green marbles: 21[tex]\frac{21}{36} = 0.58[/tex]
Help please!!! I really don’t know how to do this!
Answer:
I'm going to do 1 as an example and using what I've taught you, you have to do the rest. Hope my explanation helps.
Step-by-step explanation:
We are given the points (-2, -4) and (-1, -1)
We need to find the slope.
The equation to do so is y2 - y1 / x2 - x1
lest say:
-2 is x1
-4 is y1
-1 is x2
-1 is y2
-1 - (-4) / -1 - (-2)
3/1 = 3
slope (m) = 3
We already know the y-intercept is 2
The equation of a line is y = mx + b
For this problem we just have to substitute what we already know.
y = (slope)x + y-intercept
y = 3x + 2
*TIP*
If the y-intercept is negative, let's say: b = -5 (using slope 8)
the equation will be y = 8x - 5
Hope this helps. I wish you all the best. :)
Use the graph of speed versus time to answer the questions about acceleration.
Which of the cars is speeding up? ______
Which of the cars is slowing down? ______
Which of the cars is maintaining a constant speed? ______
The car that is speeding up is car A.
The car that is slowing down is car C.
The car that is maintaining a constant speed is car B.
What is speed?Speed is the ratio of distance and time.
It shows how fast an object is moving at a given time.
We have,
From the graph, we see that,
Car A speed is increasing with time.
Car B is maintaining a constant speed with time.
Car C is decreasing its speed with time.
Thus,
Car A is speeding up.
Car C is slowing down
Car B is maintaining a constant speed.
Learn more about speed here:
https://brainly.com/question/7359669
#SPJ1
Answer:
Step-by-step explanation:
The graph shows the amount of protein contained in a certain brand of peanut butter.
Which statement describes the meaning of the point on the graph?
A
There are 666 grams of protein per tablespoon of peanut butter.
B
There are 303030 grams of protein per tablespoon of peanut butter
C
There are 666 grams of protein in 303030 tablespoons of peanut butter.
D
There are 303030 grams of protein in 666 tablespoons of peanut butter.