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Sunny_sXe [5.5K]
3 years ago
10

ALGEBRA HELP!! Write an exponential function represented by the table.

Mathematics
1 answer:
marysya [2.9K]3 years ago
7 0

Answer:

y=-50*0.2^x

Step-by-step explanation:

the formula for an exponential function is:

y=a*b^x

what do we multiply -50 by to get -10?

-50x=-10

x=-10/-50

x=1/5

x=2/10

x=0.2

This initial value here is -50, it is the first in the table

y=-50*0.2^x

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What is another way to write 0.7?
SVEN [57.7K]
7/10. Because 0.7 equals 70% . As a fraction it would be 70/100. Simplify, and you get 7/10. 
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3 years ago
PLEASE HELP !!!!
Bess [88]

Answer:

About 31 years

Step-by-step explanation:

Given data

Principal= $3500

Rate=  4.75%

Final amount= $15,000

Time=??

The expression for time on compound interest is

Calculate time, solve for t

t = ln(A/P) / r

substitute

Calculate time, solve for t

t = ln(15000/3500) / 0.0475

t= ln(4.2857)/ 0.0475

t= 1.4552/0.0475

t= 30.63 years

Hence it will take about 31 years

4 0
3 years ago
3. Graph the line by finding the x and y intercepts. 2x + 3y = 6
lilavasa [31]

Answer:

x-int: (3, 0)

y-int: (0, 2)

Step-by-step explanation:

The x-int is found when y = 0. Set <em>y</em> to 0 to solve for the x-int.

The y-int is found when x = 0. Set <em>x</em> equal to 0 to solve for the y-int.

4 0
3 years ago
During a sale, a grocery store gives every 13th customer a free loaf of bread. If 910 customers visit the store, how many loaves
goldfiish [28.3K]

Answer:70

Step-by-step explanation:910/13=70 so he gives away 70 loafs of bread.

5 0
3 years ago
A metallic sphere is immersed in water in a cylindrical container causing a rise in the level of water by 7.5cm if the cylinder
SVETLANKA909090 [29]

Answer:

6.51 cm

Step-by-step explanation:

Since the sphere causes the water level in the cylindrical container to rise and thus increase by its own volume, the volume of the sphere is V = 4πr³/3 where r = radius of sphere. The volume rise of the container is thus    V' = πR²h where R = radius of base of cylinder = 7 cm and h = height of water level = 7.5 cm.

Since V = V',

4πr³/3 = πR²h

dividing through by π, we have

4r³/3 = R²h

multiplying both sides by 3/4, we have

r³ = 3R²h/4

taking cube-root of both sides, we have

r = ∛(3R²h/4)

Substituting the values of the variables into the equation, we have

r = ∛(3(7 cm)² × 7.5 cm/4)

r = ∛(3 × 49 cm² × 7.5 cm/4)

r = ∛(1102.5cm³/4)

r = ∛(275.625 cm³)

r = 6.508 cm

r ≅ 6.51 cm to 2 decimal places

3 0
3 years ago
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