What are the answers to 7 and 8?

Answers

Answer 1

Answer:

Answer:

Step-by-step explanation: 7 b and d8

Related Questions

To test the effectiveness of a business school preparation course, 8 students took a general business test before and after the course. If we are testing at the 5% significance level to see whether the business school preparation course is effective in improving exam scores, our critical value is 1.895. We should reject the null if the test statistic is
In a certain assembly plant, three machines B1, B2, and B3, make 30%, 20%, and 50%, respectively. It is known from past experience that 1%, 3%, and 2% of the products made by each machine, respectively, are defective. A finished product is randomly selected and found to be non-defective, what is the probability that it was made by machine B1?
Find the area of the right triangle.
The Pacheco family has a monthly income of $ 7,300 . They have monthly fixed expenses of $ 3,280 . In July, they had monthly variable expenses of $ 2,620 . They have annual expenses totaling $ 14,000 . Assuming annual expenses are paid off at an equal rate monthly, what was the Pacheco’s cash flow for July?
I need help on question 6.

The value of a particular rookie baseball card was $2.00 when it was first printed. Five years later, when the player was at his peak, the card was valued at $25.00. Ten years after printing, the card was valued at $8.00. Model the above scenario, showing the value of the card, y, with respect to years since it was printed, x. Write the equation in standard form, y = ax2 + bx + c, where a, b, and c are real numbers rounded to the nearest tenth.

Answers

Let t be the time passed in years and y be the value of baseball card.

You know that

when x=0, then y=2;
when x=5, then y=25;
when x=10, y=8.

The equation in standard form is $y=ax^2+bx+c.$ Substitute given data into the equation:

$a\cdot 0^2+b\cdot 0+c=2,\n\na\cdot 5^2+b\cdot 5+c=25,\n\na\cdot 10^2+b\cdot 10+c=8.$

Solve the system of equations:

$\left\{\begin{array}{l}c=2\n25a+5b+c=25\n100a+10b+c=8\end{array}\right.\Rightarrow \left\{\begin{array}{l}c=2\n25a+5b=23\n100a+10b=6\end{array}\right.\Rightarrow$

$\left\{\begin{array}{l}c=2\na=-0.76\approx -0.8\nb=8.4\end{array}\right.$

Then the parabola equation is

$y=-0.8x^2+8.4x+2.$

thirty four
$25 + 2 + 8$

How to find arc ab in this question

Answers

If we assume the segments marked "2" are perpendicular to the chords AB and AC, then the figure is symmetrical. arc AB will be half of (360° - 150°).

arc AB = 210°/2 = 105°

How did you get the answer

Answers

Answer:

when you solve a questions

Step-by-step explanation:

You get the answer when you solve a questions correctly

please mark brainlest i had never got brainlest

Answer:

by getting the information for a text ot story

Step-by-step explanation:

GUYSSS PLSSS I GIVE BRAINLIESSTTTT

Answers

Answer:

4. is x = 9

but I don't know about 5. sorry.

Step-by-step explanation:

5x + 3 = 48

-3. -3

5x = 45

5. 5

x = 9

5(9) + 3 = 48

48 = 48

The weather report says the temperature is 20°C and will drop 5°C per hour for the next 6 hours. Daryl plans to begone for at least 6 hours, and he has a plant outside. If he wants the plant to remain in temperatures above -10°C,
should Daryl move his plant to a warmer location before leaving?
An inequality to model the problem is
The solution is

Answers

Answer:

yes.

Step-by-step explanation:

if he's gone for EXACTLY 6 hours, the plant will be at -10°C when he returns. However, it's stated that he plans to be gone for AT LEAST 6 hours, which means he should probably put the plant indoors or somewhere warmer so he doesn't have to rush home.

Evaluate each function.k(a) = |-2a + 3| - 1; Find k(3).

g(x) = 4^2x-1 + 7; Find g(1).

f(x) = |8x^2 - 5x + 3|; Find f(-2).

h(x) = -3x + 9; Find h(-1 + x).

f(n) = 5n - 1, Find f(- 3n).

Answers

Step-by-step explanation:

k(a) = | -2a + 3 | - 1

k(3) = | -2(3) + 3 | - 1 replaced the a with 3

= | -6 + 3 | - 1

= | -3 | - 1

= 3 - 1

= 2

g(x) = 4²ˣ⁻¹ + 7

g(1) = 4²⁽¹⁾⁻¹ + 7 replaced the x with 1

= 4¹ + 7

= 4 + 7

= 11

f(x) = | 8x² - 5x + 3 |

f(-2) = | 8(-2)² - 5(-2) + 3 | replaced the x with -2

= | 8(4) - 10 + 3 |

= | 12 - 10 + 3 |

= | 5 |

= 5

h(x) = -3x + 9

h(-1 + x) = -3(-1 + x) + 9 replaced the x with -1 + x

= 3 - 3x + 9

= 12 - 3x

f(n) = 5n - 1

f(-3n) = 5(-3n) - 1 replaced the n with -3n

= -15n - 1

Other Questions

What do the factors in the factored form represent?

if a line with an angle of inclination 120⁰ and passes trough (√3,1),then what is the equation of a line

What is the slope of the line? Anwer

24° 59' 60" is equivalent to how many degrees.