Evaluate the following expression. 1/5^-2 Evaluate 6^-3

Mathematics

2 answers:

Marizza181 [45]3 years ago

7 0

1/5^-2 = 5^2 so this equals

= 25

melisa1 [442]3 years ago

6 0

$( \frac{1}{5}) ^{-2} = ( \frac{5}{1} )^{2} = 5^{2} = 25 \\ \\ 6^{-3} = ( \frac{6}{1} )^{-3} = ( \frac{1}{6} )^{3} = \frac{ 1^{3} }{ 6^{3} } = \frac{1}{216}$

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Someone help me please

natka813 [3]

15 • 2 = 30

15 • 0.5 = 7.5

15 • 0.25 = 3.75

15 • 2.25 = 33.75

8 0

3 years ago

What is the vertex (x,y)? h(t)=2x^2+4x+7 PLS SHOW WORK

Nesterboy [21]

Hack
for y=ax^2+bx+c
the xvalue of the vertex is -b/2a
and the y value is found by subsituting that for x

so

-b/2a

h(t)=2x^2+4x+7
a=2
b=4
-b/2a=-4/(2*2)=-4/4=-1
the y value
h(-1)=2(-1)^2+4(-1)+7
h(-1)=2(1)-4+7
h(1)=2+3
h(1)=5

(-1,5) is da vertex

6 0

3 years ago

A gift box in the shape of a rectangular prism measures 8 inches by 8 inches by 10 inches what is the least amount of wrapping p

Phantasy [73]

The first thing we must do for this case is to find the surface area of the rectangular prism.
We have then:
A = 2 * (l * h) + 2 * (h * w) + 2 * (w * l)
Where,
w: width
l: long
h: height
Substituting values we have:
A = 2 * (10 * 8) + 2 * (8 * 8) + 2 * (8 * 10)
A = 448 in ^ 2
Answer:
the least amount of wrapping paper needed to wrap the gift box answer is:
A = 448 in ^ 2

5 0

4 years ago

Read 2 more answers

Can u help me plz now

Elenna [48]

Answer:

1 1/5 miles per hour

Step-by-step explanation:

3/5 = 0.60

1/2= 0.5 hr

0.60 * 2 = 1.2

1.2 mph = 1 1/5