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blsea [12.9K]
3 years ago
11

If two supplementary angles are 3 x space plus space 7 and 2 x minus 1, what is the value for x?

Mathematics
1 answer:
ICE Princess25 [194]3 years ago
7 0

Answer:

3x + 7 + 2x -1

Step-by-step explanation:

(3x+2x)+(7-1)

5x + 6

6 / 5

x=1.2 or 2/10

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A survey is made to determine the number of households having electric appliances in a certain city. It is found that 75% have r
Mashcka [7]

Answer:

The probability that a household has at least one of these appliances is 0.95

Step-by-step explanation:

Percentage of households having radios P(R) = 75% = 0.75

Percentage of households having electric irons P(I) = 65% = 0.65

Percentage of households having electric toasters P(T) = 55% = 0.55

Percentage of household having iron and radio P(I∩R) = 50% = 0.5

Percentage of household having radios and toasters P(R∩T) = 40% = 0.40

Percentage of household having iron and toasters P(I∩T) = 30% = 0.30

Percentage of household having all three P(I∩R∩T) = 20% = 0.20

Probability of households having at least one of the appliance can be calculated using the rule:

P(at least one of the three) = P(R) +P(I) + P(T) - P(I∩R) - P(R∩T) - P(I∩T) + P(I∩R∩T)

P(at least one of the three)=0.75 + 0.65 + 0.55 - 0.50 - 0.40 - 0.30 + 0.20  P(at least one of the three) = 0.95

The probability that a household has at least one of these appliances is 0.95

3 0
3 years ago
The diagram shows a triangle ABC 2.5 cm 4.6 cm work out the are of the triangle
Paladinen [302]

Answer:

Idk I need the answer too

Step-by-step explanation:

8 0
4 years ago
I need help on this
Mariana [72]

Isolate the w

w/3 = 5

Note the equal sign. What you do to one side, you do to the other.

Multiply 3 to both sides

w/3(3) = 5(3)

w = 5(3)

Multiply

w = 15

15 is your answer for w

hope this helps

5 0
3 years ago
Read 2 more answers
The cost of a flight is related to the distance traveled:
Digiron [165]

The linear regression equation that models the cost of a flight in function of the distance traveled is given as follows:

C(m) = 0.08316m + 31.36331

<h3>How to find the equation of linear regression using a calculator?</h3>

To find the equation, we need to insert the points (x,y) in the calculator.

For this problem, the points (x,y) are given as follows:

(225, 50.3), (1100, 111), (1375, 143), (1675, 187), (1950, 214), (2250, 196).

Hence, inserting these points in the calculator, the linear regression equation that models the cost of a flight in function of the distance traveled is given as follows:

C(m) = 0.08316m + 31.36331

More can be learned about linear regression equations at brainly.com/question/16793283

#SPJ1

4 0
2 years ago
Select all of the expressions which are equivalent to-4/3p-2/5
Evgen [1.6K]

Answer:

-2/5 -4/3 p and -4/3p+ (-2/5)

3 0
3 years ago
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