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sasho [114]
3 years ago
10

7a-5b+4 a=2, b=3 and c=-6

Mathematics
1 answer:
KengaRu [80]3 years ago
6 0

Answer: 3

Step-by-step explanation:

the statement given us:

7a-5b+4

a= 2

b= 3

so we have:

7*(2)-5*(3)+4

14-15+4 = 3

the answer is 3

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The time that it takes a randomly selected job applicant to perform a certain task has a distribution that can be approximated b
zepelin [54]

Answer:

If the task is performed in less than or equal to 130.8 seconds, then, the individuals qualify for advanced training.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 150 sec

Standard Deviation, σ = 15 sec

We are given that the distribution of time taken is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

We have to find the value of x such that the probability is 0.10

P(X < x)  

P( X < x) = P( z < \displaystyle\frac{x - 150}{15})=0.10  

Calculation the value from standard normal z table, we have,  

\displaystyle\frac{x - 150}{15} = -1.282\\x = 130.8  

Thus, if the task is performed in less than or equal to 130.8 seconds, then, the individuals qualify for advanced training.

8 0
3 years ago
ANSWER FAST WHERE DO THEY GO :Drag the graphs to match each inequality with its solution set.
sweet-ann [11.9K]
.......................

3 0
3 years ago
Read 2 more answers
The left side of a solid block is held at a constant temperature of 200°C. The temperature profile within the block is given by
Nikitich [7]

Answer:

with T = 50⁰C, we have:

50 = 200 - 5x - x²

<=> x² + 5x = 150

<=> x² + 5x - 150 = 0

=> x = 10

6 0
3 years ago
HELP ASAP!! Linear Equations<br>x/7=3<br><br>A. 21<br>B. 3/7<br>C. 20<br>D. -21​
vredina [299]

Answer:

21

Step-by-step explanation:

put 21 were x is and then divide 21÷7=3

6 0
2 years ago
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Solve the given equation
AlexFokin [52]
Eliminate the fractions by multiplying by least common multiple.
4,9,12 all go into 36 evenly. Multiply entire equation by 36.

36/4 = 9
36/9 = 4
36/12 = 3

New equation looks like:
9(w-1) +4(w+1) = -3(w+1) \\  \\ 9w -9 +4w +4 = -3w -3  \\  \\ 9w +4w+3w = -3 +9 -4 \\  \\ 16w = 2 \\  \\ w = \frac{2}{16} = \frac{1}{8}
4 0
3 years ago
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