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2 years ago

Please help with numbers 5 and 7!

Mathematics

1 answer:

natta225 [31]2 years ago

5 0

The answer for number 5 is= 6+2 bc 6×2=12 and 6+2=8
and I'm sorry I have no idea for number 7

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trasher [3.6K]

$\displaystyle\bf\\Explanations:\\\\The~similarity~ratio~of~two~similar~cones=k\\\\k=is~the~ratio~between~2~corresponding~lengths\\\\k=\frac{R_1}{R_2}=\frac{h_1}{h_2}\\\\The~ratio~between~2~corresponding~areas~of~similar~cones=k^2\\\\\frac{Area~1}{Area~2}=k^2\\\\The~ratio~between~the~volumes~of~the~2~similar~cones=k^3\\\\\frac{Volume~1}{Volume~2}=k^3$

$\displaystyle\bf\\Solving:\\\\Volume1=108~m^3\\\\Volume2=4m^3\\\\k^3=\frac{108}{4}\\\\k^3=27~~\Big|\sqrt{~}\\\\k=\sqrt[\b3]{27}\\\\k=3\\\\Area1=54~m^2\\\\\frac{Area~1}{Area~2}=k^2\\\\\frac{54}{Area~2}=3^2\\\\\frac{54}{Area~2}=9\\\\Area2=\frac{54}{9}\\\\\boxed{\bf Area2=6 m^2}$

4 0

2 years ago

I need to find how many solutions does the system have.

REY [17]

From what I got there is one real solution :)

Rearrange the second equation to give y=2-2x, substitute into the first equation to give you a value for x and then using that you can work out y for the exact coordinates of intersection :)

Also they are both straight line graphs so they will either have one or no solutions

Hope this helped :)

4 0

3 years ago

A\b=c for bsolve for b and show your steps.show all steps.

Rufina [12.5K]

A/b=c
times both sides by b
A=bc
divide both sides by c
A/c=b
b=A/c

6 0

3 years ago

The sum of two numbers is 109. If four times the smaller number is subtracted from the larger number, the result is 4. What are

anygoal [31]

Let the numbers be x&y

X+y=109

Taking a as the smallest number we multiply by 4

So according to the question you will have this equation

Y(as the largest number) -4x=4. Y-4x=4

Then find y

Y=4x+4

Substitute y on the first equation to get a

X+y=109

X+4x+4=109

X=21

21+y=109

Y=88

HOPE IT HELPS PLS MARK AS BRAINLIEST

6 0

2 years ago

Please answer correctly !!!!!!!! Will mark brainliest !!!!!!!!!!!!!!!

Natali [406]

Answer: (for the sentence) an endpoint; one direction

Step-by-step explanation:

Drag the point that does not have an arrow after it to point A and the other one to point B.

4 0

3 years ago

Read 2 more answers