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4 years ago

How long will it take for 15% contribution on $45,000 to double?

Mathematics

1 answer:

BaLLatris [955]4 years ago

5 0

Answer:

4.96 years

Step-by-step explanation:

use the rule of 72

Y = 72 / r and r = 72 / Y

y= years

r= rate

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Cody and Lisa both went bowling last weekend, but not together. Cody went during open bowling time,

krek1111 [17]

If both Cody and Lisa play for t hours, then Cody pays a total of $(7 + t), while Lisa pays a total of $(1 + 3t). If they both pay the same amount P, then

7 + t = P

1 + 3t = P

Solve for t :

7 + t = 1 + 3t

t - 3t = 1 - 7

-2t = -6

t = 3

So Cody and Lisa each bowled for 3 hours, and they both ended up paying P = $10.

5 0

3 years ago

4) Linear? y=1+5x? O True O False

____ [38]

Answer:

true

Step-by-step explanation:

all equations in the form of y=mx+b is linear

3 0

3 years ago

Help me pleaseeeeeee.

Zinaida [17]

Step-by-step explanation:

1. x = 1/2 or 3

2. x = 3 or 2

plz mark my answer as brainlist plzzzz vote me also

3 0

3 years ago

Can someone help please?

Mariulka [41]

Answer:

Part 1) The area of the structure is $2,453.25\ ft^{2}$

Part 2) The slab will contain $1,226.625\ ft^{3}$ of cement

Step-by-step explanation:

Part 1) Find the area of the structure

we know that

The area of the structure is equal to the area of rectangle plus the area of semicircle

Find the area of rectangle

The area of rectangle is equal to

$A=LW$

we have

$L=70\ ft$

$W=30\ ft$

substitute

$A=(70)(30)$

$A=2,100\ ft^{2}$

Find the area of semicircle

The area of semicircle is

$A=\frac{1}{2}\pi r^{2}$

we have

$\pi =3.14$

$r=15\ ft$

substitute

$A=\frac{1}{2}(3.14)(15)^{2}$

$A=353.25\ ft^{2}$

Find the area of the structure

Adds the areas

$A=2,100+353.25=2,453.25\ ft^{2}$

Part 2) If the structure is 6 in thick, how many cubic feet of cement will the slab contain?

Remember that

$1\ foot=12\ inches$

Convert inches to feet

$6\ in=6/12=0.5\ ft$

Find the volume of the structure

To obtain the volume , multiply the area by 0.5 ft (thick)

$V=2,453.25*0.5=1,226.625\ ft^{3}$

7 0

4 years ago

Solve the system of equations.

Dafna1 [17]

If you put them together, +2.5y and -2.5y neutralize themselves while 5x and 3x become 8x.

2.5y + 3x = 27
5x – 2.5y = 5

8x = 32
x = 4

2.5y + 3x4 = 27
2.5y + 12 = 27
2.5y = 27-12
2.5y = 15
y = 15/2.5
y = 6

X = 4
Y = 6

8 0

4 years ago

Read 2 more answers