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Naddik [55]
3 years ago
7

Which undefined terms are needed to define parallel lines?

Mathematics
1 answer:
Shalnov [3]3 years ago
6 0
Coplanar and line are the undefined terms needed to define parallel lines.
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PLEASE NEED HELP NOW!!!!!!!❤️
alexira [117]

Answer:

A. 2564 cm^2

Step-by-step explanation:

There are two triangles (Which both are the same) and three different rectangles.

1. Let's solve the area of the triangles first!

Formula: bh(1/2)

10(26)(1/2)

130

2. Now, let's multiply by 2 since there's two of them:

130(2) = 260

3. So, we got 260. Let's find the area of the three rectangles!

Formula: bh

Rectangle A: 28(36) = 1008

Rectangle B: 10(36) = 360

Rectangle C: 26(36) = 936

4. Add the area of the triangles and the rectangles!

260 + 1008 + 360 + 936 = 2564

So the surface area is 2564 cm^2

Hope this helps! <3

4 0
3 years ago
PLEASE PLEASE HELP !!!!!!!!
nataly862011 [7]

Answer:c

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Code.<br> -3x + 4y = -8<br> 8x - y = 16<br> Solving systems by substitution
LiRa [457]

Answer:

The solution to the system of equations is \displaystyle \big(\frac{56}{29}, -\frac{16}{29}\big).

Step-by-step explanation:

We are given a system of equations:

\displaystyle \left \{ {{-3x+4y=-8} \atop {8x-y=16}} \right.

  • We need to solve these by substitution, so we need to solve one equation for a variable and then substitute the value of that variable into the other equation.
  • After doing this and solving for the opposite variable, we need to insert this into the original equation and solve for the initial variable.
  • Therefore, to solve one of the equations, we will solve it to put it in slope-intercept form and solve for y. The easier equation to work with is equation two.

\displaystyle 8x - y = 16\\\\-y = -8x + 16\\\\\frac{-y}{-1}=\frac{-8x+16}{-1}\\\\y = 8x - 16

Now, we've solved for y. So, we can substitute this into either equation and solve for x.

\displaystyle -3x + 4(8x -16)=-8\\\\-3x + 32x - 64 = -8\\\\29x - 64 = -8\\\\29x = 56\\\\\frac{29x}{29}=\frac{56}{29}\\\\x = \frac{56}{29}

Now, we substitute our value for x into one of the original equations and solve for y.

\displaystyle 8\big(\frac{56}{29}\big)-y=16\\\\-y = 16 - 8\big(\frac{56}{29}\big)\\\\-y=\frac{16}{29}\\\\\frac{-y}{-1}=\frac{\frac{16}{29}}{-1}\\\\y = -\frac{16}{29}

Therefore, the solution to our system of equations is:

  • \displaystyle \big(\frac{56}{29}, -\frac{16}{29}\big)

8 0
3 years ago
the athletics department paid $1,417.50 for all the dinners at the spring sports banquet. If each dinner cost $13.50,how many we
stealth61 [152]
<span>The athletics department paid $1,417.50 for all the dinners at the spring sports banquet. If each dinner cost $13.50,how many were purchased?

A. 105</span>
8 0
3 years ago
Read 2 more answers
Simplify the sum.<br> (4u3 + 4u2 + 2) + (6u3 – 2u + 8)
Elan Coil [88]

Answer:

10u^{3}+4u^{2}-2u+10 or 2(5u^{3}+2u^{2}-u+5)

Step-by-step explanation:

we have

(4u^{3}+4u^{2} +2)+(6u^{3}-2u+8)

step 1

Group terms that contain the same variable

(4u^{3}+6u^{3})+(4u^{2})+(-2u)+(2+8)

step 2

Combine like terms

(10u^{3})+(4u^{2})+(-2u)+(10)

step 3

Eliminate parenthesis

10u^{3}+4u^{2}-2u+10

step 4

Factor the number 2

2(5u^{3}+2u^{2}-u+5)

8 0
3 years ago
Read 2 more answers
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