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Vlad [161]
3 years ago
11

Simply please “picture”

Mathematics
1 answer:
oksian1 [2.3K]3 years ago
4 0
<h3>Answer: (-infinity, 7]</h3>

=====================================

Explanation:

The first interval (-infinity, 3) describes any number less than 3, so we can write x < 3 in short hand (where x is the unknown number).

The second interval (-1, 7] means we start at -1 and stop at 7. We do not include -1 but include 7. So we say that -1 < x \le 7 (ie x is between -1 and 7; exclude -1, include 7)

If you were to graph each ona number line, you would see that the too intervals have overlapping parts. The right most edge extends out as far as x = 7. There is no left most edge as it goes onforever that direction.

Therefore, the to intervals combine to get x \le 7 which turns into the interval notation answer of (-infinity, 7]

-----------

It might help to think of it like this: x < 3 and -1 < x \le 7 say "x is some number that is less than 3, or it is between -1 and 7". So x could be anything less than 7, including 7 itself.

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Johnson Middle School has 400
Elenna [48]

Answer:

the answer is B. 150

6 0
2 years ago
The value of x varies with y and when x=1/3 y=12 write an equationto represent the variation
Virty [35]

Answer:

y = 36x

Step-by-step explanation:

Given that x and y vary directly then the equation relating the is

y = kx ← k is the constant of variation

To find k use the condition x = \frac{1}{3}, y = 12, then

k = \frac{y}{x} = \frac{12}{\frac{1}{3} } = 12 × 3 = 36

y = 36x ← equation of variation

5 0
3 years ago
Write the EXPLICT equation for the arithmetic sequence below:<br> 11, 9, 7, 5, 3.
____ [38]

Answer:

-2

you take two away every time

6 0
2 years ago
I need to know both answer to the second part
Ierofanga [76]

Answer:

110 chocolate cupcakes

88 vanilla cupcakes

Step-by-step explanation:

5chocolate to 4 vanilla

5x+ 4x = 9x  

9x=198,  

x = 22

22 * 5=110 chocolate cupcakes

22 * 4=88 vanilla cupcakes

CHECK: 88 + 110 = 198

5 0
3 years ago
Extra points! please help !!
Xelga [282]

Answer:

The maximum width of the pool must be 38 ft

Step-by-step explanation:

Let

y -----> the length of the swimming pool

x ----> the width of the swimming pool

The perimeter of the swimming pool is

P=2(x+y)

we have

y=22\ ft

substitute

P=2(x+22)

P=2x+44

Remember that

The perimeter of the pool must be no more than 120 feet

so

The inequality that represent this scenario is

2x+44 \leq 120

Solve for x

2x \leq 120-44

2x \leq 76

x \leq 38\ ft

therefore

The maximum width of the pool must be 38 ft

4 0
3 years ago
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