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tatyana61 [14]
3 years ago
13

Which espression is equivalent to 7^(-2)*7^(6)

Mathematics
1 answer:
valina [46]3 years ago
8 0

Answer: it’s A and D

Step-by-step explanation:

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A line goes through the points (−8,−5) and (−10,−6). Find its slope. Enter your answer as a simplified improper fraction, if nec
zalisa [80]

Answer:

4/3 i think

Step-by-step explanation:

4 0
2 years ago
Find two positive real numbers whose product is a maximum. the sum is 80
Eduardwww [97]
Let's say the numbers are "a" and "b"

thus \bf y=ab\qquad 
\begin{cases}
a+b=80\\
b=80-a
\end{cases}\implies y=a(80-a)\implies y=80a-a^2\\\\
-----------------------------\\\\
\cfrac{dy}{da}=80-2a

set the derivative to 0, and check the critical points, there's only one anyway

and do a first-derivative test, to see if it's a maximum
4 0
3 years ago
Read 2 more answers
Write a polynomial FOR<br> A third-degree polynomial with leading coefficient -4
umka2103 [35]

Answer:

-4x^3 + 2x^2-3

Step-by-step explanation:

Degree is the highest exponent on the variable in a polynomial.

A leading coefficient is the first terms coefficient when the polynomial is written in standard form.

To write this polynomial, write -4x^3 as your first term. Its leading coefficient is -4 and it has a degree of 3. Then add whatever terms after it being sure to not add any more with exponent 3 or higher.

Example: -4x^3 + 2x^2-3

4 0
4 years ago
Write a value that makes 3 &gt; x true How do you<br> know?
Vera_Pavlovna [14]

Answer:

3 > x

x=2

because 3 is larger than 2

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Solve for x. Answer in Interval Notation using Grouping Symbols.<br> x^2+9x&lt;-20
AURORKA [14]

Answer:

In interval notation:

(-5,-4)

Step-by-step explanation:

 To solve the expression shown in the problem you must:

- Add 20 to both sides, then:

x^{2}+9x+20

- Now you must find two number whose sum is 9 and whose produt is 20. These would be 4 and 5. Then, you have:

(x+4)(x+5)

- Therefore the result is:

-5

In interval notation:

(-5,-4)

5 0
3 years ago
Read 2 more answers
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