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3 years ago

Can someone help me with these?? I am really confused

Mathematics

1 answer:

liraira [26]3 years ago

6 0

Question4: C, question 5: A

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In the figure below, the following is true: angle ABD is congruent to angle CDB and angle DBC is congruent to angle BDA. How can

sergiy2304 [10]

<span>triangle ABD and the triangle CDB are similar
the options are </span><span>ASA and CPCTC</span>

7 0

4 years ago

Read 2 more answers

Could somebody help me please

pantera1 [17]

Answer:

its 7

Step-by-step explanation:

7 0

3 years ago

Find the height of a right cylinder with surface area 160pie square units and radius 5 units

jenyasd209 [6]

Given:

Radius of a cylinder = 5 units.

Surface area of the cylinder = $160\pi$

To find:

The height of the right cylinder.

Solution:

Surface area of a cylinder is:

$A=2\pi rh+2\pi r^2$

Where, r is radius and h is the height of the cylinder.

Putting $r=5, A=160\pi$ in the above formula, we get

$160\pi =2\pi (5)(h)+2\pi (5)^2$

$160\pi =10\pi h+2\pi (25)$

$160\pi =10\pi h+50\pi$

Subtract $50\pi$ from both sides.

$160\pi -50\pi=10\pi h$

$110\pi=10\pi h$

Divide both sides by $10\pi$ .

$\dfrac{110\pi}{10\pi}=h$

$11=h$

Therefore, the height of the cylinder is 11 units.

8 0

3 years ago

Which fraction is bigger 2/3 or 2/8

igomit [66]

2/3 = 0.6666
2/8 = 0.25

Obviously, 2/3 is bigger than 2/8.

6 0

3 years ago

Read 2 more answers

Which sequence is modeled by the graph below? Points: (2,8) (3,4) (4,2) (5,1)

asambeis [7]

Answer:

$a_n=16 \cdot (\frac{1}{2})^{n-1}$

Step-by-step explanation:

This sequence is geometric because while x is going up by 1, the y sequence has a common ratio.

That is, term/previous equals same number per consecutive y terms.

So 1/2=2/4=4/8 is the common ratio.

The first term is when x=1. We can find this y by figuring out what we can multiply to our common ratio, 1/2, to get the next term,8.

Since 8(2)=16, then the first term is 16.

In general,

$y=a_1 \cdot (r)^{x-1}$

Or if preferred:

$a_n=a_1 \cdot (r)^{n-1}$

where $a_1$ is first term and $r$ is common ratio.

Plug in information:

$a_n=16 \cdot (\frac{1}{2})^{n-1}$

7 0

3 years ago