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Andre45 [30]
3 years ago
13

Solve the system algebraically. 2x+ y - 10 = 0 x - y - 4 = 0 What is the value of y? 1/3 2/3 14/3

Mathematics
2 answers:
stich3 [128]3 years ago
6 0

Answer:y = 2/3

Step-by-step explanation:

2x + y = 10

x - y = 4

-----------------add

3x = 14

x = 14/3

x - y = 4

14/3 - y = 4

-y = 4 - 14/3

-y = 12/3 - 14/3

-y = -2/3

y = 2/3 <==

mario62 [17]3 years ago
3 0

Answer:

2x + y = 10

x - y = 4

-----------------add

3x = 14

x = 14/3

x - y = 4

14/3 - y = 4

-y = 4 - 14/3

-y = 12/3 - 14/3

-y = -2/3

y = 2/3 <==

Step-by-step explanation:

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tino4ka555 [31]
Y equals 5 over 7x minus 5
3 0
3 years ago
0=14pi/9 radians to degrees
DIA [1.3K]

Answer:

280 degrees

Step-by-step explanation:

To change radians to degrees, we can use the conversion factor

180/pi

14 pi/9  * 180/pi

Canceling like terms

14/9 * 180

280 degrees

5 0
2 years ago
A water well is to be drilled in the desert where the soil is either​ rock, clay or sand. The probability of rock ​P(R)equals=0.
GaryK [48]
The tree diagram for the probability is shown below

P(Clay|Positive) is read 'Probability of Clay given the result is Positive'.

This is a case of conditional probability.

The formula for conditional probability is given as
P(Clay|Positive) = P(Clay∩Positive) ÷ P(Positive)

P(Clay∩Positive) = 0.21×0.48 = 0.1008

P(Positive) = P(Rock∩Positive) + P(Clay∩Positive) + P(Sand∩Positive)
P(Positive) = (0.53×0.53) + (0.21×0.48) + (0.26×0.75)
P(Positive) = 0.2809 + 0.1008 + 0.195
P(Positive) = 0.5767

Hence,
P(Clay|Positive) = 0.1008÷0.5767 = 0.175 (rounded to 3 decimal place)

5 0
3 years ago
A salesperson makes a commission of 1% of all cars that he sells. If his goal is to make at least $4,285 worth of commission dur
shusha [124]

Answer: $428,500

Step-by-step explanation:

Since commission is 1% = 1/100

Let the missing amount be represented as p

From the question, 1/100 × p = 4285

1/100p = 4285

Divide both sides by 1/100 to get the value of p

p = $4285 ÷ 1/100

p= $4285 × 100/1

p = $428500; i hope this helps, please mark as brainliest answer.

6 0
3 years ago
Plz help its math <br> do 1 pick anything
zhenek [66]

Answer:

-3

Step-by-step explanation:

30/(-2)-(-3)(4)

BIDMAS

-15 - (-3)(4)

-15 - -12

-15+12

-3

7 0
2 years ago
Read 2 more answers
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