Answer:
113.97 degrees
Step-by-step explanation:
use the cosine rule for finding an angle
cosA = b^2 + c^2 - a^2
2bc
In the given triangle angle A is greatest than any other angle.
What is the triangle?A triangle is a polygon with three vertices and three sides. The angles of the triangle are formed by the connection of the three sides end to end at a point. The triangle's three angles add up to 180 degrees in total.
Given sides of triangle, a=2cm,b=8cm,c=9cm
cosine law
Cos A = [tex]\frac{-a^2 + b^2 + c^2}{ 2bc}[/tex] = [tex]\frac{64 + 81 - 4 }{2 * 8 *9}[/tex] = 141/ 144
Cos B = [tex]\frac{a^2 - b^2 + c^2}{ 2ac}[/tex] = [tex]\frac{4 + 81 - 64}{2 * 2 *9}[/tex] = 21/36
Cos C = [tex]\frac{a^2 + b^2 - c^2}{ 2ab}[/tex] = [tex]\frac{4 + 64 -81}{2 * 2* 8}[/tex] = -13/52
A = Cos⁻¹ (141 /144 )
B = Cos⁻¹ (21/ 36 )
C = Cos⁻¹ (-13/52 )
Thus Angle A < Angle B < Angle C.
Therefore, Angle A is the greatest in the triangle.
Learn more about triangles here:
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I WILL GIVE BRAINLY
Angela has 5 fewer quarters than twice the number of her dimes. If d represents
the number of dimes Angela has, which expression represents the total number of
Angela’s quarters and dimes?
A. 2d – 5
B. 5 – 2d
C. d + (2 – 5d)
D. d + (2d – 5)
PLSSSSS SHOW YOUR WORK PLSSS
Answer:
D
Step-by-step explanation:
We will let d represent the amount of dimes Angela has.
Angel has 5 fewer quarters than twice the number of dimes.
Twice the number of dimes will be 2d.
Then, 5 fewer will yield 2d-5.
Therefore, the amount of quarters Angela has is 2d-5.
Then, the total amount of coins (dimes and quarters) together, will be:
[tex]d+(2d-5)[/tex]
The first part is the amount of dimes.
And the second part is, as we determined, the amount of quarters.
Therefore, our answer is D.
Section 1
Evelyn reads 25 pages in 30 minutes.
Number of Pages
25
400
Time (in minutes)
30
?
If Evelyn reads 400 pages at this same rate, how many minutes will it take her?
O 90 minutes
O 120 minutes
O 375 minutes
0 480 minutes
A wedding costs $2,460 for 20 guests. How much did the wedding cost per person?
Answer:
123 PER PERSON
Step-by-step explanation:
All you have to do is divide 2,460 by 20 to get 123
PLEASE HELP URGENT WILL MARK BRAINLIEST
Answer:b) intersecting
What expression is equivalent to (2a - 7) + 5(3 - a)
Answer:
Step-by-step explanation:
2a-7+15-5a
2a-5a-7+15
-3a+8
The expression which is equivalent to (2a - 7) + 5(3 - a) would be; -3a+8
What is an expression?Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.
We have been given an expression as;
(2a - 7) + 5(3 - a)
Therefore, solving it further;
2a-7+15-5a
Combine the like terms;
2a-5a-7+15
Then we get;
-3a+8
Hence, the expression which is equivalent to (2a - 7) + 5(3 - a) would be; -3a+8
To know more about an expression follow;
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12х - 5 >3х^2 +5
I am confused how to solve this.
Answer (3 different forms):
1st Form:
[tex]2+-\frac{1}{3} \sqrt{6} <x<2+\frac{1}{3} \sqrt{6}[/tex]
2nd Form:
[tex]-\sqrt\frac{2}{3}+2<x<\sqrt\frac{2}{3}+2[/tex]
3rd Form:
[tex]\frac{6-\sqrt{6}}{3}<x< \frac{6+\sqrt{6}}{3}[/tex]
Or
[tex](\frac{6-\sqrt{6}}{3}),(\frac{6+\sqrt{6}}{3})[/tex]
Step-by-step explanation:
You can see that I put three different forms of answers, but they are all still equivalent answers. The reason why I got three different answers is because I put the inequality in three different calculators and they all got me different answers, but all three are still equivalent. The following three attachments are images of the three calculators that I used to solve.
Hope this helps and answers your question! :)
PLEASE ANSWER PLEASESEE
Answer:
I’m pretty sure the answer to this would be 11- but it could also be eight so check that but I’m pretttyyyy sure it’s 11. I hope that helps you
Step-by-step explanation:
PLEASE HELP!! Select all that apply, brainiest for right answer! right answers only please
Answer:
D
Step-by-step explanation:
Based on the scatter plot below, what is the most likely value for "Pounds of Apples" when "Number of Apples" is 80?
A. 42
B. 81
C. 158
D. 398
Help me quickly please!!!
Answer:
c hope this help
Step-by-step explanation:
Answer:
It’s A. 42
Step-by-step explanation:
Identify the scale factor used to graph the
image below.
x2 – 11x + 5 = -2x
Solve equation to the nearest tenth
Answer:
x = 5/7 -> 0.714285 which to the nearest tenth would be 0.7
Step-by-step explanation:
is it x*2 or x^2?
If it were x to the power of two, then the answer would be about x1 = 0.594875 and x2 = 8.40512
Can somebody plz answer this math problem correctly thanks!
WILL MARK BRAINLIEST :D
Answer:
Ellen and Blake answered 20 questions correctly since Ellen had 0.8 correct and that is 80% same with Blake
Stephen scored a .84 or an 84%
I hope this helps :)
Step-by-step explanation:
plz mark B R A I N L I E S T
Answer:
Stephen: 21
Ellen: 20
Blake: 20
Step-by-step explanation:
If youre looking for more in depth answers:
Stephen received a 21 / 25 (84%)
Ellen received a 20 / 25 (80%)
Black received a 20 / 25 (80%)
what is a relation?????????????????
Answer:
c.
Step-by-step explanation:
what is 3/4 divided by 1/2
find the value for x!
Answer:
x=20
Step-by-step explanation:
3x+15=4x-5
20=x
write at equation for the line that is perpendicular to the given line and that contains the given point
y=-1/3x + 5 ; (2,5)
Answer:
y=3x-1
Step-by-step explanation:
Convert -1/3 to 3, since its perpendicular. then plug (2,5) for y=3x+b. The answer should be y=3x-1
what does x equal and what are the angle measures?? help Asap
all triangles are 180 always. make a equation 2x+x+x+8 then combine like terms so it will be 4x+8 then divide by 4 on bith sides x=2
simplify each expression using the distributive property
9(-7q-6)
Answer:
-63q-54
Step-by-step explanation:
When using the distributive property, you multiply everything inside of the parentheses by the number outside of the parentheses.
9(-7q-6)
-63q-54
Hope this helps, and have a great day o(*￣▽￣*)ブ
Find the
measure of X given two triangles:
Answer:
The measure of angle x is 68°
Step-by-step explanation:
The isosceles triangle has two sides equal, the angle between these two sides is called the vertex angle, the other two angles are called the base angles and they are equal in measures
In the given figure
∵ An isosceles Δ has a vertex angle of measure 68°
∴ The other two angles are equal in measure ⇒ base angles
→ The sum of the measures of the interior angles of a triangle is 180°
∴ The sum of the measures of the base angles = 180° - 68°
∴ The sum of the measures of the base angles = 112°
→ Divide their sum by 2 to find the measure of each angle
∵ The measure of each base angle = 112° ÷ 2
∴ The measure of each base angle = 56°
∵ There are two intersected segments
∴ There is a pair of vertically opposite angles
∵ The other isosceles Δ has a vertex angle of measure x
∵ A base angle of the 1st Δ and a base angle of the 2nd Δ are vertically
opposite angles
∴ They are equal in measure
∴ The measure of the base angle of the 2nd Δ = 56°
∴ The two base angles are equal in measure
∴ The measure of each base angle is 56°
→ The sum of the measures of the interior angles of a triangle is 180°
∵ 56° + 56° + x = 180°
∴ 112° + x = 180°
→ Subtract 112 from both sides
∴ x = 68
∴ The measure of angle x is 68°
Find the sum
14.3 + 7.36 = ?
Answer:
21.66
Step-by-step explanation:
y varies inversely with x. If x = 5 and y= 1 what is x if y = 0.5
Type your answer..
X=2.5
Step-by-step explanation:
0.5=1/2
5/2 = 2.5
Help Please!Solve For Z.
Answer:
Step-by-step explanation:
z = whole root (x^2 + 9)
pls help thx and merry christmas and or happy Hanukkah
Answer:
3 3/4 yards of ribbon my dudeeee
Answer:
oof
Step-by-step explanation:
You had some money and then spent $7.49. Now you have $6.21. How much
did you originally have? _____
Answer:
Step-by-step explanation:
7.49+6.21= 13.70
What is 200% of 190?
Help me with this question! Will mark brainliest
Answer:
D) y = 7x + 1
Step-by-step explanation:
Slope-incercept form is y = mx + b in which m = slope and b = y-incercept
The line crosses through (0,1), which means the y-intercept is 1
Plug the given numbers into that formula:
y = 7x + 1
help I suck at math lol
Answer:
14/8 = 1 3/4
48/9 = 5 1/3
Step-by-step explanation:
14/8 = 1 6/8
6/8 = 3/4
14/8 = 1 3/4
48/9 = 5 3/9
3/9 = 1/3
48/9 = 5 1/3
On the weather map, what does the symbol shown below represent?
A curved line with half circles is shown
Flurries
Showers
T-Storms
Warm Front
Answer: Warm font or showers
Step-by-step explanation: Hope it helped! If you can, Can I please have brainliest? I need a few more
the one of the following is NOT a measure of central tendency?____
a) mean. B) median. c) range. d) mode
Answer:
D). Mode
Step-by-step explanation:
I hope this helps!! Have a good day!
Answer:
they all are.
Step-by-step explanation:
They all are a measure of central tendency Standard deviation is not. Hope this helps :D
I NEED HELP ASAP
Enter your answer by filling in the boxes to complete the equations that describe the calculation.
80 ÷ 5 = __ ÷ 5 + __ ÷ 5
= __ + 6
= __
Answer:
80 / 5 = 40 / 5 + 40 / 5 = 10 + 6 = 16
Step-by-step explanation:
80 / 5 = 16
__ / 5 + __ / 5
You can do 80 / 2 to fill in those two blanks because the answer needs to equal the same as 80 / 5
80 / 2 = 40
40 / 5 + 40 / 5
8 + 8 = 16
the third blank needs to also equal 16. So you can do 16 - 6 to know what fills in the blank.
16-6
10
10+6 = 16
The last blank must equal the same as all the other equations so 16 would fill it.
If you need further help, don't be afraid to reach out with any questions. I hope this helps!
Answer:
80/5= 50/5 + 30/5= 10 + 6= 16