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2 years ago

Nine times the product of a negative two and a number

Mathematics

1 answer:

Aleksandr-060686 [28]2 years ago

7 0

The statement written as a simplified mathematical expression is -18x

<h3>Writing mathematical expression</h3>

From the question, we are to write the given statement as a mathematical expression

The given expression is,

"<em>Nine times the product of a negative two and a number</em>"

Let the number be x

Thus,

The product of negative 2 and a number means

-2 × x = -2x

Then,

Nine times the product of a negative two and a number is

9 × -2x = -18x

Hence, the statement written as a simplified mathematical expression is -18x

Learn more on Writing mathematical expressions here: brainly.com/question/4344214

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Radius would be 0.16

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What is the distance between the points M(-21, -7) and N(-5, -7)?

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Step-by-step explanation:

distance formula:

d=√((x_2-x_1)²+(y_2-y_1)²)

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3 years ago

Which of the following expression is equal to x^2+25?

nignag [31]

A: (x + 5i)^2
= (x + 5i)(x + 5i)
= (x)(x) + (x)(5i) + (5i)(x) + (5i)(5i)
= x^2 + 5ix + 5ix + 25i^2
= 25i^2 + 10ix + x^2

B: (x - 5i)^2
= (x + - 5i)(x + - 5i)
= (x)(x) + (x)(- 5i) + (- 5i)(x) + (- 5i)(- 5i)
= x^2 - 5ix - 5ix + 25i^2
= 25i^2 - 10ix + x^2

C: (x - 5i)(x + 5i)
= (x + - 5i)(x + 5i)
= (x)(x) + (x)(5i) + (- 5i)(x) + (- 5i)(5i)
= x^2 + 5ix - 5ix - 25i^2
= 25i^2 + x^2

D: (x + 10i)(x - 15i)
= (x + 10i)(x + - 15i)
= (x)(x) + (x)(- 15i) + (10i)(x) + (10i)(- 15i)
= x^2 - 15ix + 10ix - 150i^2
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Hope that helps!!!

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3 years ago

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If "f" varies directly with "m," and f=-19 when m=14, what is "f" when m=2?if

pashok25 [27]

Answer:-19/7

Step-by-step explanation:

f varies directly as m

f=k x m

When f=-19,m=14

-19=k x 14

k=-19/14

Relationship is f=-19m/14

When m is 2

f=(-19x2) ➗ 14

f=-38 ➗ 14

f=-19/7

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4 years ago

Which inequality is true when the value of d is 14?

shutvik [7]

Answer:

-d - 9 < 1.5

Step-by-step explanation:

In this problem, my reasoning is shown below for each individual inequality. We can test each one to see if it is true or not.

$-(14)-9>1.5?\\-14-9>1.5?\\-23>1.5?\\$

-23 is not greater than 1.5, so it can't be the first one. Let's try the next one.

$-(14)-9$

Yes! -23 is smaller than 1.5. So we can say that the second option is correct. But just for good measure, we can try the other two.

$-(14)-9>1.5?\\-14-9>1.5?\\-23>1.5?$

Nope! -23 is not greater than 1.5. Let's try the last one.

$14-9$

And again... nope. 5 is not smaller than -1.5. So our reigning option is -d - 9 < 1.5. Hopefully this was helpful! If you have any more questions, let me know.

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3 years ago