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Marina86 [1]
3 years ago
11

Equations of Exponential Functions

Mathematics
2 answers:
ElenaW [278]3 years ago
6 0

Answer:

B. b is 0.535; It is a decay factor.

andriy [413]3 years ago
3 0

Answer:

B. B is 0.535; It is a decay factor.

Step-by-step explanation:

I calculated it logically

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Ander makes a scale drawing of a tower. He uses scale of ' 1 cm represents 5 m. The tower in real life is 125 m high. How high i
Anastasy [175]

Answer:

25 cm

Step-by-step explanation:

125/5 = 25

hope this helped?

3 0
3 years ago
A metalworker has a metal alloy that is 30?% copper and another alloy that is 55?% copper. How many kilograms of each alloy shou
Sati [7]

Answer:

18 kilograms of 30% copper alloy is mixed with 72 kilograms of 55% copper alloy to makes  90 kg of a 50% copper alloy .

Step-by-step explanation:

Let us assume that the kilogram of 30% copper used to make alloy be x .

Let us assume that the kilogram of 55% copper used to make alloy be y .

As given

A metalworker has a metal alloy that is 30% copper and another alloy that is 55% copper.

The metalworker combine to create 90 kg of a 50% copper alloy .

Equation becomes

x  + y = 90

30% is written in the decimal form .

= \frac{30}{100}

= 0.30

55% is written in the decimal form .

= \frac{55}{100}

= 0.55

50% is written in the decimal form .

= \frac{50}{100}

= 0.50

Equation becomes

Concentration of 30% copper alloy × Number of kilograms of 30% copper alloy used + Concentration of 55% copper alloy × Number of kilograms of 55% copper alloy used = Concentration of 50% copper alloy × Number of kilograms of 50% copper alloy .

0.30x + 0.55y = 0.50 × 90

Simplify the above equation

\frac{30x}{100} + \frac{55y}{100} = \frac{90\times 50}{100}

30x + 55y = 4500

Two equation becomes

x  + y = 90

30x + 55y = 4500

Multiply x  + y = 90 by 30 and subtracted form 30x + 55y = 4500 .

30x - 30x + 55y - 30y = 4500 - 2700

25y = 1800

y = \frac{1800}{25}

y = 72 kilograms

Putting the value of y in the equation .

x  + 72 = 90

x = 90 - 72

x = 18 kilograms

Therefore 18 kilograms of 30% copper alloy is mixed with 72 kilograms of 55% copper alloy to makes  90 kg of a 50% copper alloy .

4 0
2 years ago
How many 5/16's are in 1 1/17? help pls
Ber [7]

Answer:

2 and 1

Step-by-step explanation:

5 could only go in 16 2 Times and 11 could only go in 17 1 time

7 0
2 years ago
(−1)^3⋅(−1)^2<br> simplify
Yanka [14]

Answer:

Step-by-step explanation:

(-1)³·(-1)² = (-1)·(1) = -1

Alternatively,

(-1)³·(-1)² = (-1)³⁺² = (-1)⁵ = -1

6 0
2 years ago
according to the synthetic division of below which of the following statements are true check all that apply ​
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