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stiks02 [169]
3 years ago
11

Which describes the solution set of (5x –1)(x + 2) = 8x – 4?

Mathematics
1 answer:
Lana71 [14]3 years ago
5 0
(5x-1)(x+2)=8x-4
5x²+10x-x-2=8x-4
5x²+9x-2=8x-4
5x²+x+2=0
use the quadratic formula, b²-4ac=1²-4*5*2=1-40=-39, -39 cannot be square rooted, so the equation has no real solution. 
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Jalil mixed 3/8 cup of sugar with 1 5/6 of water. How many more cups of water than sugar did he use in his mixture?
ValentinkaMS [17]

Answer:

2 and 3/4

Step-by-step explanation:

8 0
3 years ago
In 2016, the mean number of wins for teams in Major League Baseball was 81 wins with a standard deviation of 10.7 wins. (a) The
Kay [80]

Answer:

(a) The Chicago Cubs broke the Curse of the Billy Goat by winning the World Series in 2016. Find and interpret the z-score for the Chicago Cubs, who had 103 wins in 2016.

Z score = 2.05607

Interpreting the z score, since the z score is positive, this means, the data point is to the right of the mean.

(b) The Chicago White Sox had a z-score of 20.28. Find the number of wins for the Chicago White Sox for 2016.

= 298 wins

Step-by-step explanation:

In 2016, the mean number of wins for teams in Major League Baseball was 81 wins with a standard deviation of 10.7 wins.

(a) The Chicago Cubs broke the Curse of the Billy Goat by winning the World Series in 2016. Find and interpret the z-score for the Chicago Cubs, who had 103 wins in 2016.

The formula for calculating a z-score is is z = (x-μ)/σ,

where x is the raw score

μ is the population mean

σ is the population standard deviation.

x = 103 wins, μ = 81 wins, σ = 10.7

z = 103 - 81/10.7

z = 2.05607

Interpreting the z score, since the z score is positive, this means, the data point is to the right of the mean.

(b) The Chicago White Sox had a z-score of 20.28. Find the number of wins for the Chicago White Sox for 2016.

The formula for calculating a z-score is is z = (x-μ)/σ,

where x is the raw score

μ is the population mean

σ is the population standard deviation.

From the above question, we are asked to find the number of wins, this means we should find the raw score = x

z = 20.28, x = ? μ = 81 , σ = 10.7

Hence,

20.28 = x - 81/10.7

Cross Multiply

20.28 × 10.7 = x - 81

216.996 = x - 81

x = 216.996 + 81

x = 297.996

x is approximately 298 wins

Therefore, the number of wins for the Chicago White Sox for 2016 is approximately 298 wins

4 0
3 years ago
Can you guys help? Another question about writing out an equation of the line shown in the graph
Snowcat [4.5K]

Answer:

Step-by-step explanation:

4 0
3 years ago
Perform the operation. Write the answer in standard form.<br> (9 +3i) - (-2 - 7i)
ryzh [129]

Answer:

(9+3i)-(2-7i)=17i

Step-by-step explanation:

8 0
2 years ago
The function f(x) is shown in this graph.
Sladkaya [172]
The function f(x) goes down by two and over by one:
slope = rise/run = -2/1 = -2.

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Since -2 is a greater number than -6, the answer is:
C) <span>The slope of f(x) is greater than the slope of g(x). </span>
6 0
3 years ago
Read 2 more answers
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