1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Mila [183]
3 years ago
7

HELP almost due in 5

Mathematics
1 answer:
skad [1K]3 years ago
4 0

Answer:

A, D,F are triangle sides

You might be interested in
30. What is the solution to the system of equations? (1 point)
sesenic [268]

Answer:

Option B) (-1,7,5) is correct.

The solution to the given system of equation is (-1,7,5)

Step-by-step explanation:

Given system of equations are

-7x-2y+z=-2\hfill (1)

6x-y-z=-18\hfill (2)

5x+4y-z=18\hfill (3)

To find the solution of the given system of equations by using Elimination method:

Now adding equations (1) and (2)

-7x-2y+z=-2

6x-y-z=-18

_________________

-x-3y=-20

________________

-x-3y=-20

-(x+3y)=-20

x+3y=20\hfill (4)  (since "-" getting cancelled)

Now adding equations (1) and (3)

-7x-2y+z=-2

5x+4y-z=18

_________________

-2x+2y=16

________________

-2x+2y=16

2(-x+y)=16

-x+y=8\hfill (5)

Now adding equations (4) and (5)

x+3y=20

-x+y=8

_________________

4y=28

________________

y=\frac{28}{4}

Therefore y=7

Substituting y=7 in equation (4)

x+3y=20

x+3(7)=20

x+21=20

x=20-21

Therefore x=-1

Now substituting the values x=-1 and y=7 in equation (1) we get

-7x-2y+z=-2

-7(-1)-2(7)+z=-2

7-14+z=-2

z=-2+7

Therefore z=5

Therefore the solution to the given system of equation is (-1,7,5)

Therefore Option B) (-1,7,5) is correct.

8 0
3 years ago
Use the image for part a, b, and c. Show work.
d1i1m1o1n [39]

Answer:

  A. no

  B. see below

  C. KL = 14

Step-by-step explanation:

A. AA similarity requires two angles in one triangle be congruent with two angles in the other. Here, only one angle is marked in each triangle, so AA similarity cannot apply.

__

B. See the explanation given in Part A.

__

C. The triangles are similar because corresponding sides are proportional (and the angle between them is congruent). The sides that correspond are the ones on either side of the marked angle. The sides in the larger triangle JKL are double the measure of the sides in the smaller triangle GHI. Hence, for HI = 7, KL = 2·7 = 14.

5 0
4 years ago
Refer to the following formula for expected payoff:
emmasim [6.3K]

Answer:

Step-by-step explanation:

From the given information:

The price reduction = 98% = 0.98

Then \  the \  expected  \ payoff  \ =  \[(probability \  of \ matching \ price \  reduction  \ *  \ size \ of \  loss  \ from \  price \  cuts \ ) \  +  \ ( \ probability \  o f \  rivals\  not \  matching  \ * \  gain \ from \  price \  cuts  )]

where;

P(rival not matching ) = (100 - 98)% = 2%

P(rival not matching ) = 0.02

The expected payoff = [(0.98 * -800) + (0.02*50000)]

The expected payoff = [( -784+ 1000)]

The expected payoff = 216

(b) Probability of rivals reducing price = 5%

= 5/100

= 0.05

∴

Probability of rivals reducing price = 1 - 0.05 = 0.95

The expected payoff = (0.05 * -6000) + (0.95 *0)

The expected payoff = -300 + 0

The expected payoff = -300

(c) Yes.

Based on answers (a) and (b), the firm should cut the price.

4 0
3 years ago
How many counting numbers less than 20 have an odd amount of factors?
pochemuha
1,3,5,7,9,11,13,14,15,17,19 11 numbers
5 0
4 years ago
Read 2 more answers
sara wants to buy a necklace. the necklace has a list pice of $41 and the saels tax is 6%what will be the cost of the necklace a
gladu [14]
41multiply by 0.06+24.6
41+24.6=43.46
7 0
4 years ago
Read 2 more answers
Other questions:
  • The mean of 6 numbers is 30.If one number is excluded the mean is 29.Find the value of the excluded number
    11·1 answer
  • Plz help! Will mark brainliest
    6·1 answer
  • Find the exact value of sin(20) using the double-angle formula given: sin(0) = -4/5 , π<0<3π/2
    12·1 answer
  • Find the equation of the line that contains the points (3,5) and (7, 7). Write the equation in the form y = mx + b and identify
    15·1 answer
  • Which cone has a greater volume: a circular cone that is 3in. wide and 4in. tall or a second circular cone that is 4in. wide and
    10·1 answer
  • The average cost of a gallon of gas in January 2014 was $3.42, and was $2.36 in December 2014. What was the percent change in th
    7·2 answers
  • Which expression is equivalent to (7-8) (78)?
    8·1 answer
  • Today, everything at a store is on sale.The store offers a 20% discount. If the regular price of an item is x dollars, write an
    14·1 answer
  • PLEASE HELP WILL MARK BRANIEST IF RIGHT
    12·1 answer
  • Which line has a slope of -5 and a y intercept at 3?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!