Can the measurement from △DEF be determined using only the Law of Cosines? State whether each measurement can be determined using only the Law of Cosines by answering “yes” or “no”.
m∠D =
m∠E =
DE =
9514 1404 393
Answer:
∠D - no∠E - noDE - yesStep-by-step explanation:
With a single application of the Law of Cosines, you can only find one of an unknown side or an unknown angle. The other three elements in the 4-variable equation must be specified.
However, a single application of the LoC can be used to find DE. Then, knowing the three sides, either of the unknown angles can be found from an additional application of the LoC.
So, the answer is "it depends." It is yes to all if finding DE first is allowed. It is "no" to the angles if they must be found without finding DE first.
Martha wants to buy a laptop case for $40. So far she has saved $27. How much more does she need in order to have enough money to purchase the laptop case? Which equation correctly represent this situation?
Answer: the answer is she need 13$
Step-by-step explanation: equation > 40 - 27 = 13
brainliest please?
To make a certain shade of paint, Frazier mixed 4/9 cups of white paint with 2 and 2/9 cups of blue paint.
How many cups of blue paint should she mix with 6/7 cups of white paint to make the same shade?
good luck:)
Answer:
Here, it's ratio
Step-by-step explanation:
4/9: 2 and 2/9
simplify
1:5
6/7:x
6/7 x 5 is....
30/7
Mixed number is 4 2/7
BLAM!!!
what is the distance , x , from the bottom of the sail to the stripe ? WORK SHOWNN!
What is an equation of the line that passes through the point (2, 2) and is parallel to
the line x -
2y = 4?
Answer:
you wold have to graph it just put it in the caculater like that
Step-by-step explanation:
Answer: y- 2 = -1/2(x - 2)
Step-by-step explanation:
We need to rewrite it as y=mx+b.
x - 2y = 4
2y = - x + 4
y = -1/2x + 4/2
y = -1/2x + 2
The slope for x - 2y = 4 is -1/2.
In addition, the slope of two parallel line would be the same, the slope of the line that pass through the point (2,2) would be -1/2.
y- y1 = m(x- x1)
y- 2 = -1/2(x - 2)
i need help and how you got the answer please and thanks
Answer:
i dont really now but i had the same answer so its 246
Step-by-step explanation:
Solve the inequality.
−3y < −14
Answer:
y<14/3
Step-by-step explanation:
−3y < −14
dividing both side by -3
-3y/-3 <-14/-3
y<14/3
The solution of the inequality will be equal to y<14/3.
What is inequality?When two expressions are connected by a sign like "not equal to," "greater than," or "less than," it is said to be inequitable. The inequality shows the greater than and less than relationship between variables and the numbers.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
The given inequality will be solved as,
−3y < −14
Dividing both sides by -3 and solving further.
-3y/-3 <-14/-3
y < 14
To know more about inequality follow
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Complete the equation of the line through (-6, 5) and (-3, -3)
Answer:
y = -8/3x - 11
Step-by-step explanation:
(-6, 5) and (-3, -3)
Slope:
m=(y2-y1)/(x2-x1)
m=(-3-5)/(-3+6)
m=(-8)/3
m= -8/3
Slope-intercept:
y - y1 = m(x - x1)
y - 5 = -8/3(x + 6)
y - 5 = -8/3x - 16
y = -8/3x - 11
Please help meeeee I will mark brainliest
Answer:
It's y-x= -4
Step-by-step explanation:
I drew the graph and figured out the points. Hope this helps.
PLEASE HELP ILL GIVE BRAINLIST
Answer:
B.
E.
Step-by-step explanation:
Answer:
A= 4.889
B= 5.06
C= 4.972
D= 4.992
E= 5.01
Step-by-step explanation:
YOUR WELCOMEEEE :>
evaluate (2a-4)2+10 for a=3
PLEASE
Answer:
14
Step-by-step explanation:
sorry if it not correct ._.
How would you do this maths question?
Answer:
Step-by-step explanation:
First you take the 142+B=180
because those 2 are supplementary
B=38
and you see the 2 lines on the 2 sides that means those two sides are equal to each other and the angles corresponding with them are also equal to each other.
and a triangle= 180 degrees
A and E are the same so A=E
180-B(38)= 142
and because A=E you do 142/2= 71
and now that you have A and E you don't need A or B for the last part so
E+(x)=180 because those two angles are supplementary.
and E is 71 so...
71+(x)=180 ---------180-71=x
X=109
Which value is the range of the data set?
A)
250
B)
470
09
500
D)
720
Hurry!!!!!
y= -0,5x – 2
y= 1,5x + 8
Answer:
a. ( 5 ) ( 0 ) − 2
= −2
b. ( 5 ) ( 1 ) + 8
= 13
Hope it helps
Please mark me as the brainliest
Thank you
to increase the mean of 4 numbers by 2, by how much would the sum of the 4 numbers have to increase? check image.
Answer:
8
Step-by-step explanation:
x=average
(x+x+x+x)/4=average
to increase x by 2 you add 2
x+2=average
(x+2+x+2+x+2+x+2)=4=(4x+8)/4=x+2
you'd have to increase the sum by 8 to make the numbers' averages' go up by 2
How many sixths are in two-thirds?
Answer:
4
Step-by-step explanation:
two-thirds = 2/3 (it's easier to write it out in number format)
2/3 = 4/6
So, there are 4 sixths in two-thirds.
Answer:
4 sixths
Step-by-step explanation:
which equations you should use for
making 4 hamburgers using 3 1/2 pounds
of meat. Which equations (3) will tell you
how much meat per burger?
Answer:
Multiplication
Step-by-step explanation:
step-by-step explanation
Find the volume of x.
Answer:
98 degrees
Step-by-step explanation:
the full degree of a triangle is 180 degrees
52 + 30 = 82
180 - 82 = 98
Solve for x.
Solve for X.
Step-by-step explanation:
18/30 = X /24
cross multiply
24x 18 = 30x
432 = 30x
x= 14.4
Answer:
14.4
Step-by-step explanation:
18/30 = X /24 cross multiply
24x 18 = 30x
432 = 30x
x= 14.4
original price: $32.00 percent of markup: 10%
Answer:
origional price of $32.
marked up 10%- $3.20
new price- $35.20
If ξ={1 , 2 , 3 , . . . , 8 , 9 , 10}
A={x : x is multiples of 3},
B={x : x is a prime numbers} and
C={x : x<6},
then what is (A⋃B)ʹ⋂C ?
Answer:
{1,4}
Step-by-step explanation:
A={3,6,9}
B={2,3,5,7}
C={1,2,3,4,5}
AUB={2,3,5,6,7,9}
(AUB)'={1,4,8,10}
(AUB)'⋂C={1,4}
Answer:
Step-by-step explanation:
A = {3 , 6 , 9}
B = {2,3,5,7}
A ∪ B = { 2,3,5,6,7,9}
(A∪B)' - is set of all elements in universal set that are not in (A∪B)
(A∪B)' = {1,4,8,10}
C = {1,2,3,4,5}
(A∪B)' ∩C = {1 , 4}
HELP WILL MARK BRAINLIEST ANSWER IF GOTTEN RIGHTT
Answer:
.80
Step-by-step explanation:
Hey There,
Cosine = adjacent / hypotenuse
the adjacent of c is 16
the hypotenuse is 20
so cos C = 16/20 or .80
Answer:
Step-by-step explanation:
cos=(adjacent side)/(hypotenuse)
cosC=16/20
cosC=4/5
cosC=0.80 (to nearest hundredth)
help me find the rate of change
Answer:
3
Step-by-step explanation:
To find the rate of change, we want to use the slope formula: (y₂ - y₁) / (x₂ - x₁)
Plug in these values using two given points. I will use the first and last points.
(1, -2) & (13, 34)
(34 - (-2)) / (13 - 1)
Simplify the parentheses.
= (34 + 2) / (12)
= 36/12
Simplify the fraction.
36/12
= 3
This is your slope.
Hope this helps!
someone please help! what is the measure of x?
Answer:
its 33
Step-by-step explanation:
Jo's house is located at (-4,-2), Elenas house is a reflection of Jo's house across the x-axis. What is the coordinate of Elenas house?
Answer:
The coordinates of Elena's house is (4,-2)
Answer:
he got it
Step-by-step explanation:
Which of these equations has no solution? OA) m = 0 OB) m = m = O c) 2m + 1 = m - 2 od m + 4 = m-4
Answer:
OD is the correct answer
Answer:
OD ) m + 4 = m - 4
Step-by-step explanation:
m + 4 = m - 4
m = m - 4 - 4
m = m -8
m -m = - 8
0 ≠ 8
So, this has no solution
Need help pls help me
Answer:
A) 7, 2
B) 1, 5
C) 6, 3
Becca has 3 cookies to share with her 7 friends.How can the group equally share the cookies.
Answer:
they cant unless each wants 0.42857...
Step-by-step explanation:
Here is part of a bus timetable:
Bus Station
a)
07 00
07 50
08 40
A bus leaves Hope Street at
07 54. What time should it
arrive at School Road?
Hope Street
07 04
07 54
08 44
b)
Church Street
07 09
07 59
08 49
Jo's school is on School Road.
Jo needs to get there at 8am.
What is the time of the latest
bus that she can catch from
the bus station?
School Road
07 14
08 04
08 54
High Street
07 20
08 10
09 00
c) How long does the bus take to
travel from the bus station to
School Road?
Bus Station
07 40
08 30
09 20
The time the bus should arrive at School Road from Hope Street is 08 : 04.
The time of the latest bus that Jo can catch from the Bus Station is 07 00.
The time the bus takes to travel from the bus station to School Road is 14 minutes.
How to find the time ?The table shows that when a bus leaves for School Road from Hope Street, at 07 54, it will arrive on School Road at 08 04.
The time it takes from the bus station to School road is:
= Arrival time at school road - Departure time from Bus station
= 08 04 - 07 50
= 14 minutes
If Jo wants to be in school road at 8 am by the latest, she needs to leave before :
= 8 am - 14 minutes
= 07 46
The only bus leaving before this time is the 0700 bus from the Bus Station.
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A taxi driver filled his taxi with 40 litres of petrol on Monday.on Tuesday he filed up with 50litres of petrol.if petrol costs R15 a litre. How much money did he spend on petrol altogether?
Answer:
1,350 = 40 r + 50 r
Step-by-step explanation:
40 x 15 = 600
50 x 15 = 750
600 + 750 = 1,350
