Move words to the blanks and equations to the boxes to prove that vertical angles <21 and <23 are congruent.
Answer:
See proof below
Step-by-step explanation:
From the given diagram, we can see that <2 and <3 lies on the same straight line, hence the sum of the angles is 180 degrees (supplementary)
<2 + <3 = 180 .... 1
Similarly. <1 and <2 are also supplementary angles
<1 + <2 = 180 .... 2
Subtract 1 from 2;
<3 - < 1 + <2 - <2 = 180 - 180
<3 - <1 +0 = 0
<3 - <1 = 0
Add <1 to both sides
<3 - <1 + <1 = 0+<1
<3 = <1 (Proved!)
This shows that <3 and <1 are equal
We can also conclude that <3 and <1 are vertically opposite angles and vertically opposite angles are equal
Please help please please ASAP please please
Step-by-step explanation:
ac is the answer
.............
Ella traveled at an average speed of 65 per hour for 2.5 hours and then traveled at an average speed of 60 miles per hour for 3.5 hours. What was the total distance in miles traveled by Ella? *
Answer:
372.5 miles
Step-by-step explanation:
First, find how many miles she traveled at 65 mph:
65(2.5)
= 162.5
Then, find how many she traveled at 60 mph:
60(3.5)
= 210
Add these together:
162.5 + 210
= 372.5
So, Ella traveled 372.5 miles in total
Carrie works as a library assistant in Orpington
Library. She earns $9.75 per hour. How much will
she get paid, if she puts in 35 1/4 hours of work in
a week?
Answer: 343.6875 US$
Step-by-step explanation:
(US$ 9.75) x (35 1/4) =
A rock is thrown straight up from the top of a bridge that is 75 ft high with an initial velocity of 32 ft/s. The height of the object can be modeled by the equation s(t) = -16t^2 + 32t + 75. Determine the time(s) the ball is lower than the bridge in interval notation.
In two or more complete sentences, explain why (-∞, 0) is not included in the solution.
I tried to solve it, but given that the Critical Numbers/Roots are 0 and 2, the solution should be (-∞, 0) ∪ (2, ∞)
Step-by-step explanation:
When -16t² + 32t + 75 < 75, -16t² + 32t < 0.
=> 16t(2 - t) < 0, t < 0 or t > 2.
However t < 0 is rejected as time cannot be a negative value. Hence the solution in interval notation is (2, ∞).
What is sin45 degrees =20/r
Answer:
r = 28.28
Step-by-step explanation:
you already gave the equation: sin45°= 20/r
you wanna start by multiplying both sides by r. You do this so that your variable can be in the numerator and it will be easier to solve the equation:
r (sin45°) = 20
Now you divide both sides by sin45°, this will give you your final answer. For this, you have to put it in a calculator:
r = 28.28
P.S, good job on already knowing your equation... when i was learning this it took me a while to get eh hang of it :)
How many triangles can be constructed with sides measuring 15 cm, 7 cm, and 5 cm?
Question 4 options:
none
one
more than one
Answer:
Non
Minisugar is correct I took the quiz and got it right. Thx minisugar
The number of triangles that can be constructed by the sides 15 cm , 7 cm and 5 cm are none
What is a Triangle?A triangle is a plane figure or polygon with three sides and three angles.
A Triangle has three vertices and the sum of the interior angles add up to 180°
Let the Triangle be ΔABC , such that
∠A + ∠B + ∠C = 180°
The area of the triangle = ( 1/2 ) x Length x Base
For a right angle triangle
From the Pythagoras Theorem , The hypotenuse² = base² + height²
if a² + b² = c² , it is a right triangle
if a² + b² < c² , it is an obtuse triangle
if a² + b² > c² , it is an acute triangle
Given data ,
Let the triangle be represented as ΔABC
Now , the length of the sides of the triangle are 15 cm , 7 cm and 5 cm respectively
And , there are no triangles that can be formed with these measurements
This is because the sum of the lengths of any two sides of a triangle must be greater than the length of the third side. In this case, 15 > 7 + 5, which means that a triangle cannot be formed using these three sides. Therefore, the answer is none.
Hence , the triangle is solved
To learn more about triangles click :
https://brainly.com/question/16739377
#SPJ2
A tree cast a 16 foot long shadow on level ground a forestry student uses a clinometer to determine the sun is that a 70° angle of elevation what is the height of the tree to the nearest whole foot
Answer:
15foot
Step-by-step explanation:
The set up will give a right angled triangle.
The length of the shadow will be the hypotenuse = 16foot
The height of the tree will be the opposite = x
The angle of elevation = 70°
Using the SOH CAH TOA trig identity
Sin theta = opposite/hypotenuse
Sin 70 = x/16
x=16sin70
x = 15.04feet
Hence the height of the tree to the nearest whole foot is 15foot
tori can type 180 words in 2 min how many words can tori type in 3 min
Answer:
270 words per 3 minutes
Step-by-step explanation:
180/2=90
So she can type 90 words per minute, meaning 3 times that is how many she can type in 3 minutes:
90*3=270
Hello !!!!!!Please help me ASAP
Answer:
A
Step-by-step explanation:
I hope this helped you out
Please help me with my math questions
Answer:
1) 3*10^9
2) 6*10^-10
Step-by-step explanation:
To find scientific notation, it's a number between one and ten, times ten to the power of as many zeroes as needed.
what is 3/4 t the 3rd power
PLEASE HELP ASAP
Answer:
27/64 I think...maybe
Step-by-step explanation:
Please could someone help with this ? Thankyou
Answer:
1 2/7
Step-by-step explanation:
4.5:3 1/2
45/10 ÷ 7/2
45/10 x 2/7
90/70=9/7
=1 2/7
Answer:
four point five is to three point five
picture is shown above
suppose that y varies directly with x, and y=12 when x=15
Step-by-step explanation:
Since y is directly proportional to x,
we have y = kx, where k is a real constant.
When x = 15, y = 12.
=> (12) = k(15), k = 0.8.
Therefore we have y = 0.8x.
When x = 2, y = 0.8(2) = 1.6.
The answer is y = 1.6 when x = 2.
Answer:
y is directly proportional to x
y=kx, where k is a constant
Now, y=12 when x=15
[tex]12 = k \times 15 \\ k = \frac{12}{15} \\ \boxed{k = 0.8}[/tex]
When x=2,
[tex]y = 0.8 \times 2 \\ \boxed{y = 1.6}[/tex]
Equation: y=kx y: 1.6What is the area, in square feet, of the trapezoid below?
Answer:
68.75
Step-by-step explanation:
Measure the length of the parallel sides and add them together. Then multiply this number by the height of the area. Then multiply by ½ or divide by two to find the square footage of the trapezoid.
13.6 + 5.9= 19.5
19.5 + 8 = 27.5
27.5 x 5 = 137.5
137.5 x 1/2 = 68.75
Classify the quadrilateral Then, find x and y.
Answer:
Square
x = 2
y = 1
Step-by-step explanation:
All sides of the given quadrilateral are marked with identical signs so all sides are equal. Also, each angle is right angle. So it is a square.Measures of all ll sides of a square are equal.
Therefore,
5x - 4 = 3x
5x - 3x = 4
2x = 4
x = 4/2
x = 2
5y + 1 = 2y + 4
5y - 2y = 4 - 1
3y = 3
y = 3/3
y = 1
Answer:
7 y and 8x first add the 2 number with y together and then you take away the 1 with the x and then you add both of them together
Please don’t judge me please if I don’t know
Answer:
X intercepts are found when y is equal to zero.
0=2x+4
2x= -4
2x/2= -4/2
x= -2
Hopefully this helps!
$600 is invested for a year. If the yearly  interest rate is 7.5%, how much  interest is earned in one year?
Answer:
45
Step-by-step explanation:
.075x600
divide and then check using multiplication 291÷30 with remainder
Answer:
9 R21
Step-by-step explanation:
What is the value of log
[tex] {16}^{4} [/tex]
(1 point)
9514 1404 393
Answer:
4·log(16) = 16·log(2) ≈ 4.81648
Step-by-step explanation:
The rules of logarithms are ...
log(a^b) = b·log(a)
Here, we have ...
log(16^4) = 4·log(16)
However, we recognize that 16 = 2^4, so this becomes ...
log(16^4) = 4·(log(2^4)) = 4·4·log(2) = 16·log(2)
The base-10 logarithm of 2 is about 0.30103, so this is ...
log(16^4) ≈ 16·0.30103 = 4.81648
Choose the form of the answer you need:
log(16^4) = 4·log(16) = 16·log(2) ≈ 4.81648
Solve using substitution:
3x + y = 14
2x - 6y = -24
Answer:
(x,y)=(3,5)
Step-by-step explanation:
Answer:
x = 3
y = 5
Step-by-step explanation:
*tip = chose a variable and get by itself one side and then plug it into the other equation
3x + y = 14
y = -3x + 14
2x - 6(-3x + 14) = -24
2x + 18x - 84 = -24
20x = 60
x = 3
3(3) + y = 14
9 + y = 14
y = 5
Use the order of operations to simplify 3/4+ 8(2.5 – 0.5).
A. 2.
B. 20 1/4
C. 16 3/4
D. 4 3/8
Answer:
The answer is c
Step-by-step explanation:
Answer:
C. 16 3/4
Step-by-step explanation:
Which of these expressions is equivalent to z + 2 + 2 + 2?
o 4+4
4+
42
424
Answer:
D
Step-by-step explanation:
when you add a variable it turns into a square
17000000000000000+86958585
Wow! What an interesting question, but due to the number limit in math, your answer is 1.70000001e16
simplify
8x2 – 12x
4x2 – 12x + 9
Answer:
1. 4x(2x-3)
2. (2x-3)^2
hope this helps!!:)
Step-by-step explanation:
Answer:
8into2 is 16 -12 is 4 4into2is 8-12is-4 12into+108Step--step explanation:
I need help with geometry
Answer:
Segment pr
Step-by-step explanation: hope this helps
What is the sum of 2^5 and 7^2? Write the answer in the ordinary form.
Answer:
It's 81
Step-by-step explanation:
2^5 is 2*2*2*2*2 or 32
7^2 is 7*7 or 49
Add them together... 81
Below are two parallel lines with a third line intersecting them.
Answer:
31°
Step-by-step explanation:
what is 25 - √125
[tex]25 - \sqrt[3]{125} [/tex]
Answer:
13.8196601125
Step-by-step explanation:
i think i just did the math
tommy goes swimming every 12 days and hiking every 5 days he did both today how many days from now will he do both again
Answer:
60 days
Step-by-step explanation:
60 is the lowest number divisible by both 12 and 5