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3 years ago

Help ASAP! THANK YOU SO MUCH, plz show all the working

Mathematics

1 answer:

svetlana [45]3 years ago

5 0

Answer:

pretty sure its 4 because if the two smaller sides are 3 and 4 then the large side is 5.

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OK so I don't want answers, I just want someone to walk me through this and teach me how to do it.

Serggg [28]

Answer:

352cm²

Step-by-step explanation:

The shape is a cuboid and it has 6 faces, and the opposite faces are equal, so I calculate 3 different faces and multiplied it by 2 to give me the total surface area. Therefore, total surface area = the addition of all the surface areas in the shape. And to get each surface area, you have find the area of each of the 6 faces, and add them together, to give you the total surface area.

6 0

2 years ago

N a circle graph displaying the most popular juice sold to students in the school cafeteria, the ratio of apple juice boxes to t

ivolga24 [154]

Sorry don’t focus on my comments because it say to answer two people comment before i ask questions.

4 0

2 years ago

F(1)=15<br> f(n)=f(n-1)*n<br> What does f(2) equal?

Arlecino [84]

Answer:

f(2) =30

Step-by-step explanation:

f(1)=15

f(n)=f(n-1)*n

Put in n=2

f(2)=f(2-1)*2

= f(1) *2

= 15*2

=30

3 0

3 years ago

Read 2 more answers

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

<u>Step-by-step explanation:</u>

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

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

8 0

3 years ago

3) help I have the answers to these I just need to show the work

Rom4ik [11]

Answer:

well, I think b would be correct if we use the cosine rule but according to my calculations a is the answer when we use sin rule but I'm not really sure.

5 0

2 years ago