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mash [69]
3 years ago
12

Use the discriminant to determine the number of real solutions to the quadratic equation. 5a2+30a+45=0

Mathematics
1 answer:
Eddi Din [679]3 years ago
7 0

Answer:

1

Step-by-step explanation:

30^2 - 4(5)(45)

900 - 900

0

The discriminant works out to be 0, so there is one solution.

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3. At a manufacturing plant, it is known that 8% of the computer chips produced are defective. A random sample of 20 chips is ta
nordsb [41]

Answer:

Probability of three chip being defective is 0.012

Step-by-step explanation:

Probability of a computer chip being defective is 0.08 or 8%

Total random sample = 20

Probability of three chip being defective = 3/20 * 0.08

= 0.012

3 0
2 years ago
Write 4 numbers that round to 700,000 when rounded to the nearest hundred thousand
enot [183]
Well off the top of my head, (700,001),(700,002),(700,003), and (700,004) are 4 numbers that round to 700,00 when rounded to the nearest hundred thousand. But if you're looking for something a little more unique, then any number from 650,000 to 749,999 would round to to 700,000 when rounded to the nearest hundred thousand. I hope this helps!
4 0
3 years ago
What is the slope?<br>if possible can you explain?​
Mandarinka [93]

Answer:

m =  \frac{4}{5}

Step-by-step explanation:

The slope of a graph is also known as its gradient, which is the steepness of the graph.

If we are given two points on the line, we can find the slope by taking rise/ run, which is the ratio of the change in y-coordinate against the change in the x-coordinate. This can also be written as a formula:

\boxed{slope =  \frac{y1 - y2}{x1 - x2} }

☆ (x₁, y₁) is the first coordinate and (x₂, y₂) is the second coordinate

In this question, we are given the equation of the line. This equation is already in the slope-intercept form (y= mx +c) since the coefficient of y is 1 and all the other terms are on the other side of the equal sign. In the slope-intercept form, m is the slope while c is the y-intercept.

m= ⅘ since the coefficient of x is ⅘ in the given equation (when the equation is in the slope-intercept form).

6 0
2 years ago
Show comparison between 5/8 and 3/4. Explain.
Ilya [14]
the comparison is 2/4
6 0
3 years ago
Is 12.89 irrational
STatiana [176]

No.  It's the ratio of  1,289  to  100 .

Also, it can be written as a fraction with whole numbers
on top and bottom, like this:    1289 / 100 .

Also, it can be written down on paper completely, using
digits and a decimal point or fraction bar.  (You did that.)

Any one of these three facts makes it a rational number.

7 0
3 years ago
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