9514 1404 393
Answer:
a = √(b² +c² -2bc·cos(A))
a = √(c² -b²)
Step-by-step explanation:
For sides a, b, c, and opposite angles A, B, C, the general form of the law of cosines is ...
a² = b² + c² -2bc·cos(A)
An expression for 'a' can be written by taking the square root.
a = √(b² +c² -2bc·cos(A))
__
If you recognize that cos(A) = b/c, then a substitution can be made:
a = √(b² +c² -2(bc)(b/c)) = √(b² +c² -2b²)
a = √(c² -b²) . . . . . . . same as the Pythagorean theorem
Is that right? Help, please
Answer:
The answer is GV and VD
Step-by-step explanation:
Those are the answers because of the points on the line. Please pick me as brainliest!! :)
Find the Volume of a hemisphere that has a radius of 8 centimeters. Round to the nearest tenth
Answer:1072.3
Step by step:
use the hemisphere formula which is 2/3*pie*r^3
substitute 8 centimeters into the equation.
The Volume of a hemisphere is,
⇒ Volume of hemisphere = 1071.78 cm³
What is Multiplication?To multiply means to add a number to itself a particular number of times. Multiplication can be viewed as a process of repeated addition.
We have to given that;
Radius of hemisphere = 8 centimeters
We know that;
Volume of hemisphere = 2/3 (πr³)
Hence, We get;
⇒ Volume of hemisphere = 2/3 × 3.14 × 8³
⇒ Volume of hemisphere = 1071.78 cm³
Thus, The Volume of a hemisphere is,
⇒ Volume of hemisphere = 1071.78 cm³
Learn more about the multiplication visit:
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somebody please help me in this question, I’ll give you brainlyest and giving you 20 points :)
Answer:
Step-by-step explanation:
Noice....
6(2y+6)=4(9+3y)
divide both sides by 2
6(2y+6) / 2 = 4(9+3y) / 2
then after simplification
3(2y+6) = 2(9+3y)
6y + 18 = 18 + 6y
w t hell
it cant be solved
it can be but i think its misprinted
Calculate x
I ll mark you as the brainliest
Answer
x = 18 cm
Step-by-step explanation:
Here, we want to calculate the value of x
let half of x = b
so b is the base of each right-triangle
As we can see, the triangle is isosceles
we can calculate the length of the base of one of the smaller right angled triangle and multiply by 2 to get the full x length
According to Pythagoras’ , the square of the hypotenuse equals the sum of the squares of the two other sides
15^2 = 12^2 + b^2
225 = 144 + b^2
b^2 = 225-144
b^2 = 81
b = √81
b = 9
but x = 2b
x = 2(9)
x = 18 cm
A circle has a circumference of 1,133.54 units.What is the diameter of the circle?
Answer:
361 units
Step-by-step explanation:
Which of the values in the set {1, 2, 3, 4} is a solution to the equation 3x + 3 = 15? (4 points) a 1 b 2 c 3 d 4
Answer:
3
Step-by-step explanation:
Answer: The answer is 4
Step-by-step explanation:
the x is equal to an exponent. Since 3x4 equals 12, and 12+3 equals 15
Find the slope of the line
y=-7x - 2
Answer:
-7
Step-by-step explanation:
Hi there!
In the form y=mx+b
M is equal to your slope
B is equal to your why intercept
If you have any of these questions in the future just look at m!
-7 means the point goes down seven and one to the right!
Hope this helps!
Have a wonderful day :)
Answer:
-7
Step-by-step explanation:
y = mx+b
m = slope
b = y-intercept
y = (-7)x-2
m = -7
please answer these questions
Please solve this FAST!
Answer:
1 hour = 7.50
5 hours = 37.50
9 hours = 67.50
answer is7.50 per hour.
97.50 = 13 hours
Step-by-step explanation:
like this
[tex] \frac{22.50}{3} [/tex]
or
[tex] \frac{52.50}{7} [/tex]
= 7.50/1 hour
hope it helps you ☺️
Answer:
1. 7.50
5. 37.50
9. 67.50
Unit rate- 15$ an hour.
She worked 11 hours.
Hope these answers are right and hope they help.
A shark is swimming 42 feet below sea level. If the angle of depression from a boat on the water to the shark is 23°, what is the horizontal distance between the boat and the shark? Show your work to receive full credit. Round to the nearest hundredth if necessary.
Answer:
BC ≈ 98.95 feet
Step-by-step explanation:
From the figure attached,
A shark is swimming 42 feet below sea level at point A and a boat on the water is at point C.
If the angle of depression from the coat to shark is 23°,
tan(23°) = [tex]\frac{\text{Opposite side}}{\text{Adjacent side}}[/tex]
tan(23°) = [tex]\frac{AB}{BC}[/tex]
BC = [tex]\frac{AB}{\text{tan}(23)}[/tex]
BC = [tex]\frac{42}{\text{tan}23}[/tex]
BC = 98.947
BC ≈ 98.95 feet
42/48 simplify and trlurn to decimal
(3x-4)(x+5)= I need help with this fast
Answer:
3x^2+11x-20
Step-by-step explanation:
step 1 3x(x+5)-4(x+5)
step 2 3x(x+5)-4(x+5)= 3x^2+15-4(x+5)
step 3 3x^2+15x-4x+20
Given the equation: y = -3x + 5
Which of the following equations would create a system of equations with INFINITE SOLUTIONS?
A) y = 1/3x - 5
B) y = 5 + -3x
C) y = 3 + 5x
D) y = 5x +3
Answer:
B
Step-by-step explanation:
They both are the same equation with the same slope and y intercept which means that they are the same line, thus concluding that they will have infinite points of intersection.
HERES JOHNYYYY!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
I need help..........
Answer:
[C] 3 ⅔Explanation:
5 ⅓ - 1 ⅔
= 3 ⅔
How many pounds are in 6 tons, 200 pounds
Answer:
there are 12000 pounds in 6 tons
There are 12,200 pounds in 6 tons, 200 pounds .
To convert tons to pounds, we need to multiply the number of tons by the conversion factor of 2,000 pounds per ton .
A ton, also referred to as a short ton, is a unit of weight equal to 2,000 pounds .
Given that there are 6 tons and 200 pounds, we can calculate the total weight in pounds as follows :
6 tons * 2,000 pounds/ton + 200 pounds = 12,000 pounds + 200 pounds = 12,200 pounds .
Therefore, there are 12,200 pounds in 6 tons, 200 pounds .
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Can y’all help with this question plz
Given the set of ordered pairs: {(1,3), (2,7), (x,5), (6,4)}.
What is a value for x that would NOT make the set a function? Explain why.
Answer:
2
Step-by-step explanation:
2 is a value of x that would not make the set a function because a function can't have multiple coordinates wit hthe same domain (x-coordinate). 2 is a domain that has already been used in the point (2,7). If this is used in (x,5), the point would become (2,5) and repeat a domain.
Note:
The x-coordinate could also be 1 or 6 because they have been used as domains as well.
Hope it helps!
Two similar triangles are shown. What is the measure of ∠P?
Answer:
68.2
Step-by-step explanation:
if the triangles are similar then all of the angles are the same. The only thing that changes is the side lengths.
Answer:
[tex]63.2[/tex]°
Step-by-step explanation:
since the triangles are similar they have identical angle measures are the same
however you could solve it this way too:
[tex]A+B+C=180[/tex]
all measures of a triangle add up to 180
[tex]23.8+90+C=180[/tex]
[tex]116.8+C=180[/tex]
[tex]C=63.2[/tex]
Fill in the blank.
19/2 =
Answer:
9.5
Step-by-step explanation:
Answer:
9 1/2
Step-by-step explanation:
or 9.5 depending on which way they want the answer
You have to divide 19 and 2 and you get your answer
Vincent van Gogh is making one-color versions of all his paintings. He uses the colors in the following order and then starts over from the beginning: red blue pink green a purple. what color is painting 31?
Answer:
The color of painting 31 is RED
Step-by-step explanation:
it should be red :)
Vincent vanThat answer is 37
A bakery uses 44 cups of flour to make 10 loaves of bread. How many cups of flour are there per loaf?
Answer: 4.4
Step-by-step explanation:
44 divided by 10
Answer:
4.4 cups of flour
Step-by-step explanation:
You would have to divide 44(cups of flour) by 10(loaves of bread) to get the amount of cups of flour for each loaf. 44/10=4.4
How many pounds of $1.75/lb trail mix should a grocer combine with 3 lb of $3.75/lb trail mix to get $2.95/lb trail mix? I WILL GIVE BRAINLIEST. PLLLLS!!!
Answer:
1.847
Step-by-step explanation:
divide 2.45 and 1.75 dats ur ans
The grocer should combine 2 pounds of $1.75/lb trail mix with 3 pounds of $3.75/lb trail mix to get 5 pounds of $2.95/lb trail mix.
What is an expression?Expression in maths is defined as the relation of numbers variables and functions by using mathematical signs like addition, subtraction, multiplication, and division.
Let's assume that the grocer needs to combine x pounds of $1.75/lb trail mix to the 3 lb of $3.75/lb trail mix.
To find out how many pounds of $1.75/lb trail mix are needed, we can use the following equation:
$1.75x + $3.75(3) = $2.95(x + 3)
Simplifying the equation, we get:
$1.75x + $11.25 = $2.95x + $8.85
Subtracting $1.75x from both sides, we get:
$11.25 = $1.20x + $8.85
Subtracting $8.85 from both sides, we get:
$2.40 = $1.20x
Dividing both sides by $1.20, we get:
x = 2
Therefore, the grocer should combine 2 pounds of $1.75/lb trail mix with 3 pounds of $3.75/lb trail mix to get 5 pounds of $2.95/lb trail mix.
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Michelle and Rhonda eat dinner at
la fancy restaurant, Their bill came to
$105.36. They gave their waiter a tip that
was 22% of the bill. About how much
money did they give the waiter for his tip.
Answer:
$22.17
Step-by-step explanation:
105.36 multiplyed by 0.22 ( you need to change the 22% to a decimal so just make it 0.22) then once you multiplyed them then you get your answer.
factor: p2−6−q(p2−6)2
Answer:
(p2−6)(1−2q)
Step-by-step explanation:
hope this helped <3
help me please it’s due today
Answer: -1/2
Step-by-step explanation:
In circle o, which term correctly identifies line XY?
Аtangent
B chord
с secant
D diameter
Answer:
secant
Step-by-step explanation:
Please help! (i'll give the best answer brainliest)
Answer:
I think False umm...
i'm so so sorry if im rong
Step-by-step explanation:
A bag contains pennies, nickels, dimes and quarters. There are 50 coins in all. Of the coins 16% are pennies and 42% are dimes. There are 5 more nickels then pennies. How much does the bag contain
Answer: 21 Nickels
21 dimes
8 pennies
Step-by-step explanation:
The recipe calls for 2 cups of flour for every cup of sugar.
What is the ratio of sugar to flour?