MATHEMATICS HIGH SCHOOL

Solve.2x + 6 ≥ –4

A.
x ≤ –5

B.
x ≥ –8

C.
x ≤ –8

D.
x ≥ –5

Answers

Answer 1
Answer: Hello,

Answer D

2x+6>=-4
==>2x>=-10
==>x>=5

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How do you solve ∣∣x∣∣-8 < -4

Identify all of the expressions that simplify to −7/8.2 1/2 ÷ -7/20
______________

-1 2/5÷ -1 3/5
_____________
4 ÷ −4 4/7
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−7/10 ÷ 4/5

Show your work pls

Answers

5/2 ÷ 7/10
5/2 x 10/7
50/14; 25/7; Answer: 3 4/7

-7/5 ÷ -8/5
-7/5 x 5/8
-35/40
-(-35/40)
-(-7/8). Answer: 7/8


-7/10 x 5/4
-35/40
-7/8. Answer: -7/8


Hoped this helped

The graph shows the cost of parking, y , per hour, x , at a parking garage. The graph is titled Parking Rates. The X-axis is labeled Number of Hours and goes from zero to four by a scale of one. The y-axis is labeled Cost in dollars and goes from zero to eighteen by a scale of two. Five points are shown on the graph. Zero hours, zero dollars. One hour, four dollars. Two hours, eight dollars. Three hours, twelve dollars. Four hours, sixteen dollars. Which equation represents the relationship shown in the graph?

Answers

The relationship shown in the graph represents a linear equation because the cost of parking increases at a constant rate per hour. To find the equation that represents this relationship, we can use the slope-intercept form of a linear equation:

\[y = mx + b\]

Where:
- \(y\) is the cost in dollars (the dependent variable).
- \(x\) is the number of hours (the independent variable).
- \(m\) is the slope, which represents the rate of change.
- \(b\) is the y-intercept, which represents the initial cost when \(x\) is zero.

Based on the points provided in the graph:

Point 1: (0 hours, 0 dollars) gives us the y-intercept, so \(b = 0\).

Point 2: (1 hour, 4 dollars) allows us to find the slope (\(m\)) as follows:

So, the equation that represents the relationship shown in the graph is:

\[y = 4x\]

This equation represents a linear relationship where the cost (\(y\)) is directly proportional to the number of hours (\(x\)) at a rate of $4 per hour.

A bag contains 12 slips of paper of the same size. Each slip has one number on it, 1-12. Describe an impossible event.

Answers

There are many impossible events. Here are a few. 
I'm sure you can think of at least 15 more:

-- Pull 5 multiples of 3 from the bag.

-- Pull 3 multiples of 5 from the bag.

-- Pull 7 odd numbers from the bag.

-- Pull 7 even numbers from the bag.

-- Pull two slips from the bag whose sum is more than 21 .

-- Pull three slips from the bag whose sum is more than 33 .

-- Pull two slips from the bag whose sum is less than 3 .

-- Pull three slips from the bag whose sum is less than 6 .

-- Pull two slips from the bag whose product is more than 132 .

-- Pull two slips from the bag whose product is less than 2 .

etc.

1. Find the surface area of the sphere 40 feet​

Answers

Answer:

r≈1.78

Step-by-step explanation:

Brian is ordering books online. He has $100 to spend on the books. Each book costs $7. The shipping charge for the entire order is $8. The number of books, b, that Brian can buy is represented by the inequality 7b + 8 < 100. How many books can Brian buy without overspending?13

15

18

20

Answers

You have to plug in the numbers.
So first let's plug in 13. 7*13+8=99
Now 15. 7*15+8=113
Now 18. 7*18+8=134
Lastly 20. 7*20+8=148
The answer is 13.
You have $100 but the shipping is $8 so you subtract that from $100 and get $92, At $7 dollers a book you can get 13 books before going over 7x13=91. So the answer is 13 and you will spend $99 total.

Is the inequality sometimes,always, or never true ? A. 3(x +3) >- 3 (2 +x)
B. 9-x-5<-x+4

Answers

A. 3(x + 3) > -3(2 + x)  SOMETIMES TRUE

3(x + 3) > -3(2 + x)      |use distributive property a(b + c) = ab + ac

3x + 9 > -6 - 3x      |add 3x to both sides

6x + 9 > -6     |subtract 9 from both sides

6x > -15    |divide both sides by 6

x > -15/6

x > -2.5

B. 9 - x - 5 < - x + 4      NEVER TRUE

9 - x - 5 < - x + 4

4 - x < - x + 4    |add x to both sides

4 < 4 FALSE
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