The law of cosines is a^2+b^2-2abcos(C). Find the value of 2abcos(C).
A. 37
B. -40
C. 40
D. 20
Answers
Answer:
A. 37
Step-by-step explanation:
Given
The attached triangle and
[tex]c^2 = a^2 + b^2 -2abcos(C)[/tex]
Required
Find [tex]2abcos(C)[/tex]
From the attachment:
[tex]a = 4[/tex]
[tex]b = 5[/tex]
[tex]c = 2[/tex]
So, we have:
[tex]c^2 = a^2 + b^2 -2abcos(C)[/tex]
[tex]2^2=4^2 + 5^2 -2abcos(C)[/tex]
[tex]4=16 + 25 -2abcos(C)[/tex]
Collect like terms
[tex]2abcos(C)=16 + 25 -4[/tex]
[tex]2abcos(C)=37[/tex]
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True of False. You can use the diameter to find the Area of a circle
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TRUE!
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Answer:
F
Step-by-step explanation:
Simplify then graph it, find the x-intercept.
y = 3.75 + 1.5 (x - 1)
y = 1.5x + 2.25
When graphed, the x-intercept is 1.5
So it is, $1.50 per mile
Answer:
F. $1.50 per mile
Step-by-step explanation:
In order to solve this, you can first change it to slope-intercept form to find the slope, or rate of change, easier:
y = 3.75 + 1.5(x - 1) (given)
y = 3.75 + 1.5x - 1.5 (multiply 1.5 by each term in the parenthesis)
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y = 1.5x + 2.25 (order the terms by exponent value)
In slope-intercept form, the m (slope) of this equation is 1.5, so the rate of change is $1.50 per mile (with an initial fee of $2.25).
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Step-by-step explanation:
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Answer:
Dilation by a scale factor of k results in:
(x, y) → (kx, ky)Considering this the answers are:
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Step-by-step explanation:
To open the bracket you need to multiply the first bracket numbers to the 2nd bracket's number.
THE QUESTION WILL ONLY BE SOLVED ON THE BRACKETS ARE OPEN.....thnk me later
1st number with multiply with the other two
2nd number with aslo mutiply with the other two
STEP:1
Open the brackets after doing the following info as mentioned above. Then you will arrange them in order
STEP:2
First will come the number with power 3 then power2 and
then the last one comes the normal number
STEP:3
You will now solve the numbers after arranging them as given in the picture.
I hope you are clear with the explanatin i have done.
THANK YOU!
Solve the following quadratic equation. (x+12)^2=1 A. x = 11 and x = 13 B. x = -11 and x = -13 C. x = -11 and x = 13 D. x = 11 and x = -13
Will make brainiest!!!
Answers
Answer:
b
Step-by-step explanation:
(x+12)^2=1
or
(x+12)= +or - 1
when
x+12=1
x=1-12 =-11
when
x+12=-1
x=-1-12 =-13
then
x=-11 and x= -13
Answer:
b
Step-by-step explanation:
Plato
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Lissie set a goal to save $320 for a new computer
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Answer:
what is the rest of the question?
Step-by-step explanation:
on Quiz
The graph of function g is a parabola with the vertex located at (5,9). The parabola also passes through the point (3, 1). Which of the following is an
equation in vertex form for this function?
A g(x) = 2(x - 5)2 + 9
B. g(x) = 2(x - 5)2 - 9
C. g(x) = -2[x - 5)2 + 9
D. (x) = -2(x + 5)2 +9
N
Answers
Answer:
C. g(x) = -2[x - 5)2 + 9
Step-by-step explanation:
Equation in vertex form
Answer:
g(x) = -2[x - 5)2 + 9
Step-by-step explanation:
q/6 + 9 > 26
how would i find a solution to this?
Answers
===========================================================
Explanation:
We follow PEMDAS in reverse to isolate Q
Q/6 + 9 > 26
Q/6 > 26-9 ... subtract 9 from both sides
Q/6 > 17
Q > 17*6 .... multiply both sides by 6
Q > 102
We can have Q be any value larger than 102.
Note how the inequality sign stays the same the entire time. If we multiplied both sides by a negative number, then the inequality sign would flip; however, we multiplied both sides by a positive number.
I NEED HELP 100pts and BRAINLIEST Analyze the graph of the given polar curve. If possible, describe the shape of the graph (circle, rose curve, limacon, etc), and state the domain, range, and maximum r-value of the graph. State whether the graph is continuous and whether it is bounded. Describe any symmetry the graph has. Give the equations of any asymptotes or state that the graph has no asymptotes. r = 4
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Answer:
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Answer:
Circle of radius 4
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Range: r = 4
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Continuous
Bounded
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Step-by-step explanation:
right on edge
What’s 2+2+2+2+3+3+45837298=?
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45837312
Step-by-step explanation:
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Answer:45837312
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Without multiplying, pick whether each product is greater than, less than or equal to the whole number. 4 x 1/7
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Answer:
ur wrong for that. That why no one is going to answer this qestion hater
Step-by-step explanation:
3x + 2 y =12
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Step-by-step explanation:Move all terms that don't contain
y
to the right side and solve.
Answer:
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You start by simplifying the equation.
Jon and Becky measured the circle-shaped part of a sun they drew on the sidewalk.
The diameter of the circle is 60 centimeters. What is the approximate area of the circle? (Use 3.14 for .)
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B.
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C.
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D.
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Step-by-step explanation:
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Step-by-step explanation:
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In ΔDEF, the measure of ∠F=90°, DE = 91 feet, and FD = 59 feet. Find the measure of ∠D to the nearest degree.
Answers
Answer:
Step-by-step explanation: I need help now pls
Answer:
50
Step-by-step explanation:
\text{SOH-CAH-TOA}
SOH-CAH-TOA
\cos D = \frac{\text{adjacent}}{\text{hypotenuse}}=\frac{59}{91}
cosD=
hypotenuse
adjacent
=
91
59
\cos D = \frac{59}{91}
cosD=
91
59
D=\cos^{-1}(\frac{59}{91})
D=cos
−1
(
91
59
)
D=49.583\approx 50^{\circ}
D=49.583≈50
∘
Type into calculator and round to the nearest degree.
D
E
F
59
91
(adjacent to ∠D)
Which expression is equivalent to 5 + 15x?
0 A. 5(1 + 3x)
ОВ. 1(5 + 3x)
Ос. 3(5 + х)
OD. 5(3x)
оооо
Answers
Answer:
A. 5(1 + 3x)
Step-by-step explanation:
5(1 + 3x)
(5 × 1) + (5 × 3x)
5 + (5 × 3x)
5 + 15x
A works. Let's check the rest.
1(5 + 3x)
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5 + (1 × 3x)
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B does not work.
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Step-by-step explanation:
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Answer and Step-by-step explanation:
You got everything correct so far except for #4.
4. Yes, it is 1. But it would be in months.
So you would put:
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Since the population increases by 1.5 times a month.
For question number 3.
The equation should be:
[tex]f(x) = 100(1.5)^x[/tex] <- Function
[tex]f(x) = 100(1.5)^{12}[/tex] <- Function when x is 12 months (1 year)
(Put those both the same way I put it.)
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What is the rule when multiplying by 10's?
Answers
Answer:
To multiply by a power of 10, simply move the decimal to the right the same number of places as the exponent or as the number of zeros.
Step-by-step explanation:
Example: To divide by a power of 10, simply move the decimal to the left the same number of places as the exponent or as the number of zeros.
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Answer:
13)
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14)
R
Step-by-step explanation:
13) If you you remove 4 from 44, you have to find the square root of 4, which is 2 then you multiply that by whatever is left inside.
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You love nuts. You go to the store to buy almonds and cashews. Cashews cost $2 per pound and Almonds cost $5 per pound. You end up spending $450 on 150 pounds of nuts (you really love nuts). How many pounds of each type of nut did you get? How many pounds of cashews? How many pounds of Almonds?
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A maximum regulation-sized soccer field is 360 ft. by 225 ft. What is the area?
Answers
Answer:
The last one, 81000 sq ft.
Step-by-step explanation:
To find area, you do length times width.
81,000 ft. squared
BRAINLYEST FOR BEST ANSWER BEST ANSER TAKES HOME A BRAINLYEST AND A LIKE AND A GOOD REVIEW
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Step-by-step explanation:
it answer is C
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240
Step-by-step explanation:
i looked up the image and it pulled up ninja so
Which shows how to add 6 + 4+ 5?
6 = 6 and 4 + 5 = 9
1) 6+4 = 10 and 10 + 5 = 15
<» 6+4 = 10 and 4 + 5 = 9
Answers
Answer:
6+4=10 and 10+5=15
Step-by-step explanation:
JKL is a straight line.
JK = KL = KM.
Angle KLM = 58°
Work out the size of the angle marked x.
Give a reason for each stage of your working.
КІ
Х
M
I
580
L
Total marks: 4
Matha Watch Lid
Terms
Answers
Answer:
x = 32°
Step-by-step explanation:
∆KLM is an isosceles triangle because it has two equal sides, KL & KM. Therefore, the angles opposite to each of the two equal sides, which are referred to as the base angles are congruent to each other.
m<KML = m<KLM = 58°
m<MKL = 180 - (58 + 58) (Sum of triangle)
m<MKL = 64°
m<JKM = 180 - m<MKL (linear pair theorem)
m<JKM = 180 - 64 (Substitution)
m<JKM = 116°
∆JKM is also an isosceles triangle with two equal sides. Therefore, it's based angles (x & <J) would also be equal to each other.
Thus:
x = ½(180 - m<JKM)
x = ½(180 - 116) (Substitution)
x = 32°
An apple cost Php x per piece. How many will 3 dozen cost?
A. Php 3x
B. Php 12x
C. Php 24x
D. Php 36x
Answers
The sum of the measures of three angles of a quadrilateral is 290. The measure of the fourth angle is..?
Answers
Answer:
70
Step-by-step explanation:
In a quadrilateral the angles add up to 360 degrees and so 360 - 290 = 70 so the answer would be 70.
If correct please mark brainliest