3 years ago

15 : The world population in 2010 was approximately 6.92 billion.

Mathematics

1 answer:

Viefleur [7K]3 years ago

7 0

A number that can be written

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If your starting salary were $40,000 and you received a 3% increase at the end of every year for 15 years, what would be the tot

Anuta_ua [19.1K]

y=a(1+r)^t

y=40000(1+0.03)^16=64188.26

4 0

3 years ago

Find the values for c and d

baherus [9]

Answer:

c=-5

d=1

Step-by-step explanation:

$(cy^2)(4y^d)=-20y^3$

I'm going to reorder the left-hand side. Multiplication is commutative.

$(4c)(y^2y^d)=-20y^3$

Since the bases are the same in $y^2y^d$ and the operation is multiplication, I'm going to add the exponents giving me:

$4cy^{2+d}=-20y^3$

So this implies we have two equations to solve:

$4c=-20$ and $2+d=3$

So the first equation can be solved by dividing both sides by 4 giving you $c=-5$ .

The second equation can be solved by subtracting 2 on both sides giving you $d=1$ .

6 0

4 years ago

What is the center and radius of the circle?<br> (x-3)2 + y² = 4

Kipish [7]

Answer:

center = (3, 0)

radius = 2

Step-by-step explanation:

Standard equation of a circle: $\sf (x-h)^2+(y-k)^2=r^2$

(where (h, k) is the center of the circle and r is the radius)

Given equation:

$\sf (x-3)^2+y^2=4$

Rewrite in standard form:

$\sf \implies (x-3)^2+(y-0)^2=2^2$

Therefore

center = (3, 0)
radius = 2

4 0

2 years ago

A school purchased 45 tote trays for

Alexeev081 [22]

Answer:

6.75

Step-by-step explanation:

Simply MULTIPLY.

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3 years ago

Alex mows a lawn that measures 800 square feet in

Darina [25.2K]

First thing we gotta do is find the unit rate:

800 divided by 2.5 = 320

And now your problem is complete! The unit rate or square foot per hour is 320 square feet per hour!

Hope this helps, if not, comment below please!!!

5 0

3 years ago