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3 years ago

Which of the following is always true? Choose the correct answer below.

Mathematics

1 answer:

Andrews [41]3 years ago

3 0

Answer:

Step-by-step explanation: Data skewed to the right have a longer left tail than right tail.

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What is the solution to 5-2x^2=-15?

Phantasy [73]

Isolate x.

-2 $x^{2}$ =-20
$x^{2}$ =10
x= $\sqrt{10}$

6 0

3 years ago

What graph passes the vertical line test?

Marianna [84]

Answer:

The fourth image, or D.

Why?

If you had a ruler and placed it on the grid vertically and moved the ruler left to right, pictures A, B, and C, all have two points that lay on the same X point.

Picture D is the only one that has no points that lay on the same X point, thus making it the right answer.

Thank you for reading into this.

(Hope this helps you! ^^)

5 0

3 years ago

Read 2 more answers

What is 7.58e8 Expressed the standard notation

kvasek [131]

7.58e8
= 7.58 x 10^8
= 758,000,000

5 0

2 years ago

The function f(x)=-(x-3)^2 +9 can be used to represent the area of a rectangle with the perimeter of 12 units, as a function of

Ivenika [448]

Maximum area of the rectangle is $9cm^{2}$

Explanation:

Considering the dimensions to be in cm

$f(x) = -(x-3)^{2} +9\\f(x) = -(x^{2} +9 - 6x)+9\\f(x) = -x^{2} +6x\\f'(x) = -2x+6\\-2x+6 = 0\\2x=6\\x=3cm\\\\$

Putting the value of x = 3

$Perimeter = 2(x+b)\\12 = 2(3+b)\\6 = 3+b\\b= 3cm$

$Area of rectangle = x X b\\ = 3 X 3\\ = 9cm^{2}$

Therefore, maximum area of the rectangle is $9cm^{2}$

7 0

3 years ago

Hey guys can u tell me if the top is correct if its not can u show me step by step what to do and what the answer will be and ca

ASHA 777 [7]

You have the right idea and you are close to the correct answer. However that's not what your teacher is looking for in terms of steps.

The starting inequality is $b + 8 \ge 20$
She starts off selling 8 buckets. Then she sells b more to get a total of b+8
This total must be 20 or larger which is why I set b+8 greater than or equal to 20

Solve for b by subtracting 8 from both sides

$b + 8 \ge 20$

$b + 8-8 \ge 20-8$

$b \ge 12$

So she needs to sell at least 12 more buckets to reach her goal

If you graphed this on a number line, then you would draw a closed circle at 12. Then shade to the right of the close circle.

6 0

3 years ago