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3 years ago

Simplify the following expression using the distributive property

Mathematics

2 answers:

Karolina [17]3 years ago

7 0

Answer:

7z + 84

Step-by-step explanation:

Multiply 7 times z and 12

Elza [17]3 years ago

3 0

Answer:

7z +84

Step-by-step explanation:

7 x z = 7z then you do 7 x 12 = 84

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Solve on the interval (0,2pi) 3 cscx-1=2

Musya8 [376]

Answer:

It is pi/2

Step-by-step explanation:

5 0

3 years ago

the half-life of strontium-90 is approximately 29 years. how much of a 500 g sample of strontium-90 will remain after 58 years

Yuliya22 [10]

Answer: 125 g

Step-by-step explanation:

$A = P_o\cdot e^{kt}\\\\\text{First, use the given information to find k:}\\\\\bullet A=\dfrac{1}{2}P_o\\\\\bullet k = unknown\\\\\bullet t=29\text{ years}\\\\\dfrac{1}{2}P_o=P_o\cdot e^{k(29)}\\\\\\\dfrac{1}{2}=e^{k(29)}\qquad divided\ both\ sides\ by\ P_o\\\\\\ln\bigg(\dfrac{1}{2}\bigg)=ln\bigg(e^{k(29)}\bigg)\qquad applied\ ln\ to\ both\ sides\\\\\\ln\bigg(\dfrac{1}{2}\bigg)=29k\qquad simplified-ln\ and\ e\ cancel\ out\\\\\\\dfrac{ln\bigg(\dfrac{1}{2}\bigg)}{29}=k\qquad divided\ 29\ from\ both\ sides\\\\\\-0.0239=k$

$\text{Now, use the following in the equation to solve for A:}\\\\\bullet A=unknown\\\bullet P_o=500\\\bullet k=-0.0239\\\bullet t=58\text{ years}\\\\A=500\cdot e^{(-0.0239)(58)}\\\\.\quad=500\cdot e^{-1.386}\\\\.\quad=125$

8 0

4 years ago

The spill covered 11,000 square miles of ocean. The oil spread out in a circular pattern and the radius increased by 0.10mph. Us

N76 [4]

Answer:

3.14 times 0.10. comes out to be 31.4 .

Step-by-step explanation:

4 0

3 years ago

What is the greatest common factor of 49, 62 and 80? OA) 1 OE) 2 OC) 3 OD) 5

madam [21]

Answer: A (1)

Step-by-step explanation:

The way to find a common factor is by dividing the given numbers by the largest possible multiple that still gives you a whole number

49/1=49

62/1=62

80/1=80

This is an option

49/2=24.5

62/2=31

80/2=40

This is not an option, 24.5 is not a whole number

40/3=16.333(repeating)

This is not an option, you are not given a whole number

49/4=12.25

This is also not an option, 12.25 is not a whole number

Answer

Our only possible answer is A-1

7 0

3 years ago

If 3x4+2=56.8, what is the value of x? x≈6.708 x≈−4.323 x≈−2.891 x≈−2.059

Sphinxa [80]

Answer:

d. x= -2.059

Step-by-step explanation:

let me know if this is incorrect

5 0

3 years ago