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nydimaria [60]
3 years ago
14

X2 + 6X + 9 = 0 O {0} O {-3,3) O {3} O {-3}

Mathematics
1 answer:
expeople1 [14]3 years ago
5 0

Answer:

x=-3

Step-by-step explanation:

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Help please!! I will mark brainilist and give a lot of points.
julia-pushkina [17]

Answer:

a = 23.588

Step-by-step explanation:

a^2 = 17 1/3^2 + 16^2

a^2 = 300.4 + 256

a^2 = 556.4

a = 23.588 (I rounded to thousandths but you can round to whatever)

8 0
2 years ago
Read 2 more answers
If the product of a number and negative −3 is subtracted from the​ number, the result is 11 more than the number. find the numbe
Ierofanga [76]
The answer would be 2.2.

This sentence as an expression would be n - (-3n) = n + 11.
Solve it and you'll get 2.2!
8 0
4 years ago
The measures of the three of the interior angles of a quadrilateral are 60°, 110°, and 90°. What is the measure of the fourth an
irina [24]
The answer is C. 100 because the total measure of a quadrilateral is 360. When you add up the 3 interior angle measures, it adds up to 260. Then you subtract 360-260 to get 100 as the fourth angle measure. Hope that this helped!
6 0
3 years ago
Can y’all help me on Thai one thank you
vichka [17]

Karmin will make $18.4 for working an hour after the increase.

Step-by-step explanation:

Step 1:

First, we need to determine how much Karmin made an hour.

Karmin's hourly rate = \frac{480}{30} = 16.

So Karmen made $16 every hour that she worked. She worked for 30 hours and earned $480.

She will get a 15% increase in her hourly rate this month.

Step 2:

We need to determine how much 15% of $16 is.

15% of $16 = \frac{15}{100} (16) = 0.15 (16)= 2.4.

So her 15% increase amounts to $2.4.

So the hourly rate for this month 16 + 2.4 = 18.4.

So Karmin will make $18.4 for working 1 hour.

5 0
3 years ago
Which of the choices below is not a possible correlation coefficient?
fiasKO [112]

Answer:

The condition for r is the following:

-1 \leq r \leq 1

And for this case if we analyze the options the only impossible value is given by:

1.0528

Because this value is higher than 1 and not satisfy the general limits for r

Step-by-step explanation:

The correlation coefficient is a measure of dispersion and is a value between -1 and 1, and is defined as:

r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}

The condition for r is the following:

-1 \leq r \leq 1

And for this case if we analyze the options the only impossible value is given by:

1.0528

Because this value is higher than 1 and not satisfy the general limits for r

8 0
3 years ago
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