4 years ago

Simplify (-3) ^ -2...........................................

Mathematics

1 answer:

Rudiy274 years ago

5 0

Answer:9

Step-by-step explanation:

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What is the value of 7 ^−3 ^ −1 for = −2 and = 4?

andrey2020 [161]

Answer:

d. −7/32

Step-by-step explanation:

The expression that we have to evaluate in this problem is:

$7x^{-3}y^{-1}$

We have to evaluate this expression for:

x = -2

y = 4

We start by rewriting the expression by rewriting it using the following:

$a^{-n}=\frac{1}{a^n}$

So the expression can be rewritten as

$7x^{-3}y^{-1}=\frac{7}{x^3 y}$

Now we observe that:

$(-2)^3=(-2)(-2)(-2)=-8$

Therefore, by substituting x = -2 and y = 4 into the expression, we find:

$\frac{7}{(-2)^3\cdot 4}=\frac{7}{-8\cdot 4}=-\frac{7}{32}$

8 0

3 years ago

The length of the hypotenuse of a right triangle is 13 m. The length of one leg is 5 cm. Find the length of the other leg.

astraxan [27]

12 cm, use the pythagorean theorem: a^2+b^2=c^2
5^2+b^2=13^2
25+b^2=169
b^2=144
b=12
12 cm

4 0

3 years ago

2. Standard 6.NS.B

weqwewe [10]

Answer:

4 packages of hot dogs and 5 packages of hot dog buns.

Step-by-step explanation:

Find the least common multiple of 10 and 8, which is 40.

5 0

3 years ago

The pulse rates, in beats per minute, for some students of a class are shown below:

patriot [66]

A put another dot on 79

8 0

3 years ago

Read 2 more answers

Write the function in standard form.<br> f(x) = - 2(x - 9)2 + 14<br> f(x)=

Archy [21]

F(x) = -2 (x-9)2 + 14
= -4(x-9) + 14
= -2 [ 2(x-9) -7 ]
= -2 (2x -18 -7)
= -2 (2x -25)

3 0

3 years ago