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stich3 [128]
3 years ago
15

What are the solutions to y=10x2+29x−21

Mathematics
1 answer:
Jlenok [28]3 years ago
6 0

Answer:

x 2 +(29/10)x-(21/10) = 0 Add 21/10 to both side of the equation : x 2 +(29/10)x = 21/10 Now the clever bit: Take the coefficient of x , which is 29/10 , divide by two, giving 29/20 , and finally square it giving 841/400 Add 841/400 to both sides of the equation

Step-by-step explanation:

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2. 2 1 1 3
stellarik [79]

Answer:

a.1 1 2 3

2'4'5'10 that is ig

6 0
3 years ago
Clare is painting some doors that are all the same size. She used 2 liters of paint to cover 1 and 3/5 doors. How many liters of
vitfil [10]

Answer:

1 and 1/4 liters of paint are needed for one door

Step-by-step explanation:

You can eliminate each answer choice out. For '4/5 liters' you know that if that amount was used, it wouldn't be reasonable since it would mean that the more was used for the other 3/5 door. 3 and 1.5 would be too much since it is over 2 liters. 2 liters wouldn't be logical since you paint 1 <em>and</em> 3/5 of a door and you only used 2 liters, no more or no less, basically what would you use for the other 3/5 door if this was the answer.

Hope this helps!

4 0
3 years ago
Read 2 more answers
Write a linear function for the following in slope-intercept form: (2,26)<br> (8,44)*
marshall27 [118]

Answer:

{ \tt{slope =  \frac{44 - 26}{8 - 2} }} = 3 \\ y = mx + c \\ { \bf{26 = (3 \times 2) + c}} \\ c = 20 \\  \\  =  > { \boxed{ \tt{y = 3x + 20}}}

7 0
3 years ago
Read 2 more answers
What is the upper quartile, Q3, of the following data set? 54, 53, 46, 60, 62, 70, 43, 67, 48, 65, 55, 38, 52, 56, 41
scZoUnD [109]
The original data set is 
{<span>54, 53, 46, 60, 62, 70, 43, 67, 48, 65, 55, 38, 52, 56, 41}

Sort the data values from smallest to largest to get
</span><span>{38, 41, 43, 46, 48, 52, 53, 54, 55, 56, 60, 62, 65, 67, 70} 
</span>
Now find the middle most value. This is the value in the 8th slot. The first 7 values are below the median. The 8th value is the median itself. The next 7 values are above the median. 

The value in the 8th slot is 54, so this is the median

Divide the sorted data set into two lists. I'll call them L and U 
L = {<span>38, 41, 43, 46, 48, 52, 53}
U = {</span><span>55, 56, 60, 62, 65, 67, 70}
they each have 7 items. The list L is the lower half of the sorted data and U is the upper half. The split happens at the original median (54).

Q3 will be equal to the median of the list U
The median of U = </span>{<span>55, 56, 60, 62, 65, 67, 70} is 62 since it's the middle most value. 

Therefore, Q3 = 62

Answer: 62</span>
4 0
3 years ago
What is number 315,962,004 write in words ​
solmaris [256]

Answer:

three hundred  fifteen million nine hundred sixty two thousand four

Step-by-step explanation:

5 0
2 years ago
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