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3 years ago

If you fill out both of these you can get Brainliest and some 5 star and thanks!

Mathematics

2 answers:

saul85 [17]3 years ago

8 0

Answer:

First estimate:

63% is kind of close to 60%

41 is kind of close to 40

its easy to compute 60% of 40 - it's 24

Second estimate:

14% is close to 15%

96 is close to 100

15% of 100 = 15

sasho [114]3 years ago

8 0

Answer:

1st one is 25.83, so estimate that so it shud be like 24

Step-by-step explanation:

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qwelly [4]

Answer:

1. D -4

2. B -16

3. B. 37

4. E 13

5. C -646

6. E 12

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Given the following three points, find by the hand the quadratic function they represent (0,6, (2,16, (3,33)

Lisa [10]

Answer:

$f(x) = 4x^2 - 3x + 6$

Step-by-step explanation:

Quadratic function is given as $f(x) = ax^2 + bx + c$

Let's find a, b and c:

Substituting (0, 6):

$6 = a(0)^2 + b(0) + c$

$6 = 0 + 0 + c$

$c = 6$

Now that we know the value of c, let's derive 2 system of equations we would use to solve for a and b simultaneously as follows.

Substituting (2, 16), and c = 6

$f(x) = ax^2 + bx + c$

$16 = a(2)^2 + b(2) + 6$

$16 = 4a + 2b + 6$

$16 - 6 = 4a + 2b + 6 - 6$

$10 = 4a + 2b$

$10 = 2(2a + b)$

$\frac{10}{2} = \frac{2(2a + b)}{2}$

$5 = 2a + b$

$2a + b = 5$ => (Equation 1)

Substituting (3, 33), and c = 6

$f(x) = ax^2 + bx + x$

$33 = a(3)^2 + b(3) + 6$

$33 = 9a + 3b + 6$

$33 - 6 = 9a + 3b + 6 - 6$

$27 = 9a + 3b$

$27 = 3(3a + b)$

$\frac{27}{3} = \frac{3(3a + b)}{3}$

$9 = 3a + b$

$3a + b = 9$ => (Equation 2)

Subtract equation 1 from equation 2 to solve simultaneously for a and b.

$3a + b = 9$

$2a + b = 5$

$a = 4$

Replace a with 4 in equation 2.

$2a + b = 5$

$2(4) + b = 5$

$8 + b = 5$

$8 + b - 8 = 5 - 8$

$b = -3$

The quadratic function that represents the given 3 points would be as follows:

$f(x) = ax^2 + bx + c$

$f(x) = (4)x^2 + (-3)x + 6$

$f(x) = 4x^2 - 3x + 6$

6 0

4 years ago

write an equation of the line passing through the point (6,3) that is perpendicular to the line 5x - 6y = 10

Jlenok [28]

Answer:

5x-6y-12=0

Step-by-step explanation:

...make y the subject y=-6/5x +2

...use the coefficient of x as the gradient,m=-6/5

...for a perpendicular line,find the negative reciprocal of the gradient,5/6

...sub into the eqn y= -1/m(x-a)+b

3 0

3 years ago

A bottling plant produces bottles of 500 ml at the production rate of 10,000 bottles per hour. An inspector randomly picks up 10

galben [10]

Answer:

e.none of these

Step-by-step explanation:

Computations For CC for Fraction defective

Sample No d p=d/100

1 0 0

2 0 0

3 2 0.02

4 1 0.01

5 0 0

6 1 0.01

7 2 0.02

8 0 0

Total 0.06

$\overline{p} =\frac{1}{k}\sum p=\frac{0.06}{8} =0.0075$

$\overline{q} =1- 0.0075= 0.9925$

3 sigma control limits for p chart are given by:

$\overline{p} \pm 3\sqrt{\overline{p}\overline{q}/n}\Rightarrow 0.0075\pm 3\sqrt{\frac{0.0075*0.9925}{100}}$

$= 0.0075\pm0.0259\Rightarrow ( 0.0334,0 )$

hence option e is correct

6 0

3 years ago

The distance on the number line from -10 to -2 equals 5x – 12. What is the value of x?

Troyanec [42]

It would be: - 2 - (-10) = 5x - 12

= -2 + 10 = 5x - 12

= 8 + 12 = 5x

= x = 20 / 5

= x = 4

4 0

3 years ago