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3 years ago

Please help me! Brainliest and 65 points!

Mathematics

2 answers:

Nitella [24]3 years ago

7 0

Answer:

The total surface area = 2xy + 2xz + 2yz

The units here are cm*cm or cm^2

Step-by-step explanation:

Natalija [7]3 years ago

4 0

Draw a right rectangular prism. Draw it so one face is pretty much the way you would see it if it was real. The other two faces you can see have a slant to them.

Label the face you can see as x and y. Name any of the slanted lines as z. Put cm for centimeters behind the letters.

Volume = x*y*z the units here are cm^3
Why because you are multiplying cm*cm*cm together.

The surface area is a whole different ball game.
you have 2 surfaces who have areas of x*y There's one in front of you and one you cannot see
You have a top and a bottom that is y*z each that's 2y*z

You have two surfaces that are x*z each and that's 2x*z

The total surface area = 2xy + 2xz + 2yz
The units here are cm*cm or cm^2

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drek231 [11]

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3 years ago

Which expressions is equivalent to 2r+(t+r)

azamat

Answer:

t+3r

Step-by-step explanation:

This is a one step solution

All you do is add like terms

In this case the only like terms are the varibles r

2r+(t+r)

so if you add all of the rs together there would be 3rs

So the rest of the problem would continue as normal while bringing the 3r to the end

t+3r

8 0

3 years ago

2. Which of the following proves that 209 is NOT a prime number?

solmaris [256]

the answer is B) 19 × 11 = 209

coz A prime number is a whole number greater than 1 whose only factors are 1 and itself.

but here it is a multiple of 11 and 19 ....

so its proved

5 0

3 years ago

The longest human power sporting event is the tour de France cycling race in a particular year the average speed for the winner

sergey [27]

Answer:

The winner completed the race in 96 hours and 52 minutes.

Step-by-step explanation:

Given:

Distance of the cycling race = 2292 miles

Average speed of the winner = $23.66\ mph$

We need to find time required by winner to complete the race.

Solution:

Now we know that;

Time required can be calculated by dividing Total Distance from the Average speed.

framing in equation form we get;

time required by winner to complete the race = $\frac{2292}{23.66} = 96.87\ hrs$

Now converting $0.87\ hrs$ into minutes we get;

$0.87\times 60= 52.2\approx 52\ mins$

Hence the winner completed the race in 96 hours and 52 minutes.

3 0

2 years ago

I need help dec iding if the triangle below are congruent in

lozanna [386]

Answer:

They're congruent if they have the exact same sides and the exact same angles. So from what i can see, yes they are congruent.

Step-by-step explanation:

7 0

3 years ago