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Leokris [45]
3 years ago
15

Help (look at picture)

Mathematics
1 answer:
mote1985 [20]3 years ago
8 0

Answer:

x is greater than or equal to -5 (the second graph)

Step-by-step explanation:

-5c+2<=27

-5x<=25

x>=-5

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Question 1
AveGali [126]

Answer:

2.30/7.5

Step-by-step explanation:

4.30-2=2:30

2.5-10=7.5

8 0
3 years ago
During a cold winter, the temperature stayed below zero for 10 days (ranging from −20 to −5). The variance of the temperatures o
Serjik [45]

Answer:

The variance of the temperatures of the 10 day period must be at least zero.

Step-by-step explanation:

The variance is the expectation of the squared deviation of a random variable from its mean. It measures how far a set of numbers are spread out from their average value.

Its unit of measure corresponding to the square of the unit of measure of the variable. In this case, the variance of the temperatures is expressed in (°C)². The variance has a minimum value of 0.

Since the variance is squared, it will always have values greater than zero.

5 0
3 years ago
Hey can you please help me posted picture of question
Debora [2.8K]
We can use quadratic formula to determine the roots of the given quadratic equation.

The quadratic formula is:

x= \frac{-b+- \sqrt{ b^{2} -4ac} }{2a}

b = coefficient of x term = -11
a = coefficient of squared term = 2
c = constant term = 15

Using the values, we get:
x= \frac{11+- \sqrt{121-4(2)(15)} }{2(2)} \\  \\ &#10;x= \frac{11+-1}{4} \\  \\ &#10;x=3, x= 2.5

So, the correct answer to this question are option B and D
4 0
3 years ago
The 6% state income tax on a $42.00 salary​
prisoha [69]

Answer:

75 cents

Step-by-step explanation:

5 0
2 years ago
Which of the following pairs of organisms compete with each other for food?
erastovalidia [21]
The answer would be D. Mice and Rabbits. Hope it helps! :)
8 0
3 years ago
Read 2 more answers
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