MATHEMATICS HIGH SCHOOL

What’s the answer to X + 0.2 = -0.8

Answers

Answer 1
Answer:

Answer:

x=-1

Step-by-step explanation:

X+0.2=-0.8

x=-1
Answer 2
Answer: The answer would be...

x = -1

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What are the steps to solving the inequality 3b + 8 ≥ 14

Answers

Answer:

The solution of the given inequality 3b+8\geq 14 is: [2, \infty)

Step-by-step explanation:

Given the inequality equation: 3b+8\geq 14

Subtraction property of equality states that you subtract the same number to both sides of an equation.

Subtract 8 to both sides of an equation.

3b+8-8\geq 14-8

Simplify:

3b\geq 6

Division property of equality states that you divide the same number to both sides of an equation.

Divide both sides by 3 we get;

(3b)/(3) \geq (6)/(3)

Simplify:

b\geq 2

therefore, the solution of the given inequality  is: b\geq 2 or [2, \infty)
3b+8≥14
Subtract 8 from both sides
3b≥14-8
3b≥6
Divide both sides by 3
b≥6/3
b≥2

19. Lavina wants to buy a rocking chair for $160. She will pay 10% down and pay the rest in six monthly installments. What will be the amount of each monthly payment?A. $26
B. $27
C. $24
D. $16

20. The ratio of an object's weight on Earth to its weight on Neptune is 5 : 7. How much would a person who weighs 150 pounds on Earth weigh on Neptune?
A. 750 pounds
B. 107 1/7 pounds
C. 210 pounds
D. 170 pounds

Answers

number 19

price :$16
pay :10%
ask:each monthly payment
answer:
pay =10%×$160=$16
each monthly payment
={$160-$16}÷6
144÷6
$24
number 20
weight earth:150 pounds
ratio :5:7
weight neptune :7/5×150=210 pounds

Which of the following figured is not a polygon ?

Answers

There are no polygons at all among your list of choices.

Apply the commutative property to 13×7×21 to rearrange the terms and still get the same solution

Answers

commutative property
abc=acb=bac=bca=cab=cba
multiplicatoin can move

some possible ones
(13)(7)(21)=(13)(21)(7)=(21)(7)(13)=(21)(13)(7)=(7)(13)(21)=(7)(21)(13)
any of those work
the community answer for this equation could be 7*21*13 or 21*7*13.

Consider the function f (x) = x³ – 7x² + 3x + 2. 1) Find the derivative, f ’(x). 2) Find the second derivative, f ’’(x). 3) Find the critical numbers of f (x) - just the x-values. 4) Use either the First Derivative Test or the Second Derivative Test to determine if these critical values are a relative maximum or relative minimum. 5) Compute the corresponding y-values and clearly label the relative maximum point and relative minimum point. 6) Find the absolute maximum point and absolute minimum point of f (x) on the interval [-2, 6]. 7) Find the inflection point of f (x).

Answers

1) To find the derivative, f'(x), we can use the power rule. Taking the derivative of each term, we get f'(x) = 3x^2 - 14x + 3.

2) To find the second derivative, f''(x), we can differentiate f'(x). Taking the derivative of each term in f'(x), we get f''(x) = 6x - 14.

3) To find the critical numbers of f(x), we set f'(x) equal to zero and solve for x. So, 3x^2 - 14x + 3 = 0. Solving this quadratic equation, we find the critical numbers x = 1 and x = 1/3.

4) To determine if these critical values are a relative maximum or relative minimum, we can use the Second Derivative Test. Evaluating f''(x) at x = 1 and x = 1/3, we find that f''(1) = -8 and f''(1/3) = -4. Since f''(1) is negative and f''(1/3) is also negative, we can conclude that both x = 1 and x = 1/3 correspond to relative maximum points.

5) To compute the corresponding y-values, we substitute the critical numbers into the original function f(x). We find that f(1) = -1 and f(1/3) = 1/27. Therefore, the relative maximum point is (1, -1) and the other relative maximum point is (1/3, 1/27).

6) To find the absolute maximum and minimum points of f(x) on the interval [-2, 6], we evaluate f(x) at the critical numbers and the endpoints of the interval. We find that f(-2) = 36, f(6) = 218, f(1) = -1, and f(1/3) = 1/27. Therefore, the absolute maximum point is (6, 218) and the absolute minimum point is (1, -1).

7) To find the inflection point of f(x), we need to find where the concavity changes. This occurs when f''(x) = 0 or is undefined. However, in this case, f''(x) is always defined and never equals zero. Therefore, there are no inflection points in the given

PLEASE HELP ME!!!! 50 points! Given the points C(-1, -3) and D(5, 6), find the coordinates of the point E on directed line segment CD that partitions CD into the ratio 2 to 1.

A. (1, 0)

B. (3, 3)

C. (-3, 3)

D. (2, 1.5)

Answers

Answer:

B. (3,3)

Step-by-step explanation:

In order to find the coordinates of point E that partitions the line segment CD into a ratio of 2:1, we can use the following formula for finding the coordinates of a point that divides a line segment in a given ratio:

For a line segment with endpoints A(x1, y1) and B(x2, y2), and a division ratio of m:n, the coordinates of the point E(x, y) that divides the line segment in this ratio are given by:

\sf x =( (m* x_2 + n* x_1) )/((m + n))

\sf y =( (m* y_2 + n* y_1) )/((m + n))

In this case, we want to divide the line segment CD into a ratio of 2:1, so m = 2 and n = 1.

Wehave the coordinates of C(-1, -3) and D(5, 6).

Using the formula:

\begin{aligned} x &\sf =( (2* 5 + 1* (-1)))/( (2 + 1)) \n\n &\sf = (10-1)/(3)\n\n &\sf = (9)/(3)\n\n &\sf = 3 \end{aligned}

and

\begin{aligned} y &\sf =( (2* 6 + 1* (-3)) )/( (2 + 1)) \n\n &\sf = (12-3)/(3) \n\n &\sf = (9)/(3)\n\n &\sf = 3 \end{aligned}

So, the coordinates of point E that partitions the line segment CD into a ratio of 2:1 are E(3, 3).

So, the answer is B. (3,3)

Answer:

b

Step-by-step explanation:

bc yes
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Solve x divided by six equals eight