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Tcecarenko [31]
3 years ago
5

Interval notation on a number line

Mathematics
1 answer:
Gennadij [26K]3 years ago
7 0

Answer:

x>-3 : All numbers greater than -3, not including -3. The interval is (-3, inf)

x<=2: All numbers less than 2, including 2.The interval is (-inf, 2]

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The class was given a test that had a total of 125 points possible. A student then earned an 84% on the test. What are the total
Ganezh [65]

Answer:

Step-by-step explanation:

84/100 = x/125

x = 105 points

4 0
3 years ago
I NEED HELP ASAP! In a magic square, the sum of the numbers in each row, column, and diagonal is the same. Write and solve equat
Trava [24]

Answer:

a=22,\\b=31,\\c=13

Step-by-step explanation:

When choosing equations to write, make sure you choose a pair that allow you to isolate a variable and solve for it.

Sample solution:

a+25+28=16+25+34,\\\\a+28=16+34,\\a+28=50,\\a=\boxed{22}

16+b+28=16+25+34,\\b+44=75,\\b=\boxed{31}

34+c+28=16+25+34,\\c+28=41,\\c=\boxed{13}

8 0
3 years ago
Help a girl out this is 9th grade math is really appreciate it
Semmy [17]

Answer:

Yes (2,7) Is A solution of the system

Step-by-step explanation:

4 0
3 years ago
Jackson had $25 to spend on groceries . After purchasing 5 cantaloupes he had $2.50 left how much did each cantaloupe cost
charle [14.2K]
Since the price of the cantaloupes is unknown, it will have to represented by a variable. Let's use x.
If Jackson starts with $25 and buys 5 cantaloupes of an unknown price, this subtracts 5 times the amount of 1 cantaloupe (which is x) from that $25.
This is shown as 25 - 5x.
After spending that money, he has $2.50 left over.
This means 25 - 5x = 2.50.
Now you just need to solve this by first isolating the variable.
First, subtract 25 from both sides.
25 - 5x - 25 = -5x
2.50 - 25 = -22.5
Then, divide both sides by -5. It's -5 since 5 is the coefficient and it's negative, so -5.
-5x / -5 = x
-22.5 / -5 = 4.5
This means x = 4.5.
And if x is 4.5, then that means the cost of 1 cantaloupe is $4.50.
3 0
4 years ago
If TR = 11 ft, find the length of PS. Round to the nearest hundredth.
jonny [76]

The length of arc PS from the information given in the task content is; 31.5 ft.

<h3>What is the length of the arc PS?</h3>

It follows from the task content that;

  • Point T is the center of the circle and line TR is the radius of the circle.

  • Additionally, the angle subtended by arcPS = 180 - m<PS = 180 - 16 = 164⁰. This follows from the fact that line PR is a diameter.

On this note, the length of arc PS is;

arc PS = (164/360) × 2 × 3.14 × 11.

arc PS = 31.5ft.

Read more on length of an arc;

brainly.com/question/2005046

#SPJ1

7 0
2 years ago
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