1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
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:

You might be interested in
Find
Zarrin [17]

The measures of two complementary angles are 64 degrees and 26 degrees

<h3><u>Solution:</u></h3>

Let the larger angle be "a" and smaller angle be "b"

<em>Two angles are Complementary when they add up to 90 degrees</em>

so we get,

a + b = 90 ------ eqn 1

Given that measure of the larger angle is 12 more than twice the measure of the smaller angle

larger angle = 12 + 2(smaller angle)

a = 12 + 2b --- eqn 2

<em><u>Let us solve eqn 1 and eqn 2 to get values of "a" and "b"</u></em>

Substitute eqn 2 in eqn 1

12 + 2b + b = 90

12 + 3b = 90

3b = 90 - 12

3b = 78

<h3>b = 26</h3>

Therefore from eqn 2,

a = 12 + 2b

a = 12 + 2(26)

a = 12 + 52

<h3>a = 64</h3>

Thus the measures of two complementary angles are 64 degrees and 26 degrees

7 0
3 years ago
From previous polls, it is believed that 66% of likely voters prefer the incumbent. A new poll of 500 likely voters will be cond
Vladimir79 [104]

Answer:

The mean and standard deviation of the number preferring the incumbent is mean = 330, standard deviation = 10.59.

Step-by-step explanation:

We are given that From previous polls, it is believed that 66% of likely voters prefer the incumbent.

A new poll of 500 likely voters will be conducted. In the new poll the proportion favoring the incumbent has not changed.

Let p = probability of voters preferring the incumbent = 66%

n = number of voters polled = 500

<u>So, the mean of the number preferring the incumbent is given by;</u>

         Mean = n \times p = 500 \times 0.66

                                = 330 voters

<u>And, standard deviation of the number preferring the incumbent is given by;</u>

          Variance =  n \times p\times (1-p)  

                          =  500 \times 0.66 \times (1-0.66)

                          =  112.2

So, Standard deviation =  \sqrt{Variance}

                                       = \sqrt{112.2}  = 10.59

7 0
2 years ago
When Anders make scones he uses sugar, butter and flour in the ration 2:3:6. Hehas 200g of sugar, 300g of butter and 450g of flo
katovenus [111]

The amounts of sugar, butter, and flour used are 150 grams, 225 grams, and 450 grams, respectively.

Anders makes scones with three ingredients : sugar, butter, and flour. The ratio of the amounts of sugar, butter, and flour is 2:3:6. The available amounts of the ingredients in the kitchen include 200 grams of sugar, 300 grams of butter, and 450 grams of flour. He makes as many scones as he can with these ingredients.

Let the amounts of sugar, butter, and flour be 2x, 3x, and 6x, respectively. The maximum proportion is for flour. The amount of flour used is 450 grams. The amount of butter used is half of that of the flour. The amount of sugar is one-third of that of flour.

B = (3x/6x)*450 = 225

S = (2x/6x)*450 = 150

To learn more about ratio, visit :

brainly.com/question/13419413

#SPJ9

4 0
10 months ago
What is 8^2 + 15^2= c^2
Tasya [4]

Answer:

8^2\:+\:15^2=\:c^2

c = 17

Step-by-step explanation:

This is the  Pythagorean theorem  

6 0
2 years ago
Read 2 more answers
Let f(x) = 2x; its inverse is f1(x) = log2x. If f(5) = 32, what is f-1(32)?
PtichkaEL [24]

Answer:

?

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • Given the parent functions f(x) = log2 (3x − 9) and g(x) = log2 (x − 3), what is f(x) − g(x)?. A. f(x) − g(x) = log2 (2x − 6). B
    13·2 answers
  • 419% of what number is 33.52
    7·1 answer
  • What is the prime factorization of 69?
    8·1 answer
  • Rewrite subtraction as an equivalent addition expression.<br><br> 5(x – 4) + 3x – 9x + 7
    9·1 answer
  • Suppose you roll a fair, six-sided number cube.
    12·1 answer
  • What is true about Marcus's work? Check all that
    11·2 answers
  • This type of medicine is still practiced today.
    6·1 answer
  • Part A: Determine if the expression is one of our special products. If so, identify it by its general form:
    10·1 answer
  • What is the value of x?<br> Enter your answer in the box.
    12·1 answer
  • Help please 100 points
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!