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Wewaii [24]
4 years ago
11

What is 14=6+z/-2? (The "6+z" is on top.)

Mathematics
2 answers:
MaRussiya [10]4 years ago
8 0
21 is the answer but it has to be 20 characters so I’m typing this out
pochemuha4 years ago
6 0

Answer:

<h3>z = -34</h3>

Step-by-step explanation:

14=\frac{\left(6+z\right)}{-2}\\\\Switch \:sides\\\\\frac{\left(6+z\right)}{-2}=14\\\\\mathrm{Multiply\:both\:sides\:by\:}-2\\\\\frac{\left(6+z\right)\left(-2\right)}{-2}=14\left(-2\right)\\\\Simplify\\\\6+z=-28\\\\\mathrm{Subtract\:}6\mathrm{\:from\:both\:sides}\\\\6+z-6=-28-6\\\\Simplify\\\\z = -34

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2. A bag contains 5 red marbles, 3 blue marbles, 6 white marbles, and 2 green marbles.
Georgia [21]

Answer:

Step-by-step explanation:

5 red

3 blue

6 white

2 green

total 16 marbles.

Note: P(E) = probability of event E happening

P(~E) = probability of event E NOT happening.

We usually leave probabilities in fractions whenever possible because they will not be subject to round-off errors.

A. choose one marble at random.

P(W) = 6 white / 16 total = 3/8

B. choose one marble at random.

P(~R) = (16-5)/16 = 11/16

C. choose one marble at random, then a second one without replacement,

there will be 3 blue out of 16 at the beginning, then if successful, there will be 2 blue out of 15.

P(BB) = (3/16)*(2/15) = 1 / 40

D. choose two with replacement

5 red out of 16 for first draw, still 5 red out of 16 for second draw.

P(RR) = (5/16)^2 = 25/256

5 0
3 years ago
Perimetrul unui dreptunghi este de 400 m, iar latimea este de 3 ori mai mica decat lungimea acestuia. Cati metri are lungimea dr
wlad13 [49]

Răspuns:

150 m

Explicație pas cu pas:

Reamintim:

Perimetrul unui dreptunghi, P

P = 2 (lungime + lățime)

P = 400

Lățime = x

Lungime = 3x

Astfel, avem:

400 = 2 (3x + x)

400 = 2 (4x)

400 = 8x

Împărțiți ambele părți la 8

50 = x

Lungime = 3x

Lungime = 3 * 50

Lungime = 150 m

3 0
4 years ago
Write the greatest common factor for 12 &amp; 32
ANTONII [103]
<span>GCF (12,32) = 4
4 is your answer</span>
3 0
4 years ago
Read 2 more answers
A cpa get paid $160for each tax return he prepares and his goal is to earn 6240 preparing tax return during this tax season if h
nika2105 [10]

Answer:

n = 35  more returns to prepare

Step-by-step explanation:

6240 - 640 = amount

still to be earned = 160n

5600=160n

n = 35

3 0
3 years ago
Read 2 more answers
A solid concrete wall 4.0 m by 2.4 m and 30 cm thick, with a thermal conductivity of 1.3 w/(m·k), separates a basement at 18°c f
Nastasia [14]
<span>THE AREA OF THE ROOM IS :A=4*2.4=9.6 m^2
THICKNESS t=0.30 m
DIFFERENCE IN TEMPERATURE dT=18-6=12
q=kAdT/dx=kA*dT/t
q=1.3(9.6)(12)/0.30=4992 W=499.2 J/s
In 1 hour or 3600 sec
P=q*T=(499.2 J/s)(3600 s)=1797120 J=1.8 MJ
1.8MJ OF HEAT FLOWS HTROUGH THE WALL IN ONE HOUR</span>
5 0
3 years ago
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