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3 years ago

Please help and write the steps to fine the answer (ignore the erasings)

Mathematics

2 answers:

zaharov [31]3 years ago

4 0

Answer:

1/50 or 0.02

Step-by-step explanation:

As we can see that, we are given w = 10 and z =2 so to evaluate or calculate the equation, you just have to apply it into the equation:

= (2w^-2)*z^0

= (2*10^-2)* 2^0

We know that any number ^0 would = 1

So in this situation:

= (2*1/100) * 1

= 2/100 * 1

Simplified:

= 1/50 *1

= 1/50 or 0.02

Hope this help you :3

podryga [215]3 years ago

3 0

Answer: 1/50

Step-by-step explanation:

= 2 * 10^-2 * 2^0

= 2 * 1/10^2 * 1 (2^0=1)

= 2/100

= 1/50

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In 2012, New York had a population of about 19 million people,

alexandr1967 [171]

Answer:

B(if the option is 10^7 instead of 107

Step-by-step explanation:

no. of people in New York=19000000

no. of people in Vermont =626,000

difference in populations = 19000000-626,000 =18374000

therefore, the difference in populations is 18374000

(which can also be written as 1.8374x10^7)

7 0

3 years ago

A middle school campus is shaped like a rectangle with a width of 1/4 mile and a length of 1/2 mile. A map of the campus has a w

igomit [66]

Answer:

A) 1:4

Step-by-step explanation:

#We first calculate the campus' area:

$a=lw\\\\=\frac{1}{4}\times \frac{1}{2}\\=0.125 \ mi^2$

#We then calculate the campus' map area in square ft:

$A=lw\\\\=0.5 \times 1\\\\=0.5 ft^2$

Ratio is a comparison between two dimensions:

$Ratio=\frac{0.125}{0.5}\\\\=0.25\\\\=\frac{1}{4}\\\\=1:4$

Hence, the ratio of the area in square miles of the campus to the area in square feet of the map is 1:4

3 0

3 years ago

Solve the system of equations by the substitution method. y = 5x + 6 y=9x+7.

joja [24]

Answer:

(-1/4, 19/4)

Step-by-step explanation:

5x+6=9x+7

-4x=1

x= -1/4

y=5(-1/4) +6

y=19/4

3 0

3 years ago

Hey can you please help me posted picture of question

AnnZ [28]

I think choice a would be the correct answer. 90.

8 0

4 years ago

Solve for y in terms of x

Alika [10]

Answer:

(a) 3 - 2x - 2x² (b) -21

Step-by-step explanation:

given, y +2x² = 3 -2x

make y the subject:

y = 3 - 2x - 2x²

if y = f(x)

then

f(x) = 3 - 2x - 2x²

(b) to find f(3) we need to replace x with 3:

3 - 2(3) - 2*(3)²

-21

3 0

2 years ago