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masya89 [10]
3 years ago
11

Which of the following statements uses the multiplicative identity?

Mathematics
1 answer:
Roman55 [17]3 years ago
3 0

Answer:

(-8)(1) = -8

Step-by-step explanation:

The expression that uses utilizes a multiplicative inverse is (-8)(1) = -8

A multiplicative inverse is such that when an identity element such as the number 1 multiplies another, it does not change it in any way.

    The expression where we see this is the option C;

          (-8)(1)   -8 multiplied by 1 does not change -8, it is still -8.

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In a right triangle, the value of cos B = 3/5. What is the value of sin B?
Yanka [14]

Answer:It would be 3/5 as well.

Step-by-step explanation:

4 0
3 years ago
-10x = -210 how would i find this answer?
jeka94

To find the answer to -10x=-210 you must divide -210 by -10

-210/-10= 21

Therefore x=21

So the proper equation is -10(21)=-210

3 0
3 years ago
Read 2 more answers
Two sides of a triangle measure 9 cm and 23 cm what could be the measurement of the third side of the triangle
Vladimir79 [104]
Pythagorean Theorem: a^2+b^2=c^2
(9)^2 + b^2 = (23)^2
81 + b^2 = 529
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b^2 = 448
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6 0
3 years ago
Use the definition mtan=lim
Leokris [45]

(a) mtan refers to the slope of the tangent line. Given <em>f(x)</em> = 9 + 7<em>x</em> ², compute the difference quotient:

\dfrac{f(x+h)-f(x)}h = \dfrac{(9+7(x+h)^2)-(9+7x^2)}h = \dfrac{(9+7x^2+14xh+7h^2)-9-7x^2}h = \dfrac{14xh+7h^2}h

Then as <em>h</em> approaches 0 - bearing in mind that we're specifically considering <em>h</em> <em>near</em> 0, and not <em>h</em> = 0 - we can eliminate the factor of <em>h</em> in the numerator and denominator, so that

m_{\rm tan} = \displaystyle \lim_{h\to0}\frac{f(x+h)-f(x)}h = \lim_{h\to0}\frac{14xh+7h^2}h = \lim_{h\to0}(14x+7h) = 14x

and so the slope of the line at <em>P</em> (0, 9), for which we take <em>x</em> = 0, is 0.

(b) The equation of the tangent line is then <em>y</em> = 9.

4 0
2 years ago
Help me please I need help with this math homework
GalinKa [24]
What is the question?
3 0
3 years ago
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