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IRISSAK [1]
3 years ago
7

A student is trying to solve the set of two equations given below: Equation A: x + z = 6 Equation B: 3x + 2z = 1 Which of the fo

llowing is a possible step used in eliminating the z-term? Multiply equation A by −2. Multiply equation B by 2. Multiply equation A by 3. Multiply equation B by 3.
Mathematics
2 answers:
solong [7]3 years ago
8 0
A) multiply equation A by -2 so you get -2x - 2z = -12 and then you can add both equations to eliminate z
velikii [3]3 years ago
8 0
A is the answer helper to to it before me lol
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An item costs $370 before tax, and the sales tax is $14.80.
lisabon 2012 [21]

Answer:

4%

Step-by-step explanation:

370.00x4%=$14.80

3 0
2 years ago
What are the coordinates of the orthocenter of △JKL with vertices at J(−4, −1) , K(−4, 8) , and L(2, 8) ?
kompoz [17]

Answer:

K(-4,8) is the ortho center.

Step-by-step explanation:

In a right angled triangle, The vertex of the right angle is the ortho center.

Here we are given

J(-4,-1), K(-4,8) & L(2,8)

Using distance formula we get

JK^{2}= (-4+4)^{2}+ (8+1)^{2}=0+81=81

KL^{2}= (-4-2)^{2}+ (8+-8)^{2}=36+0=36

JL^{2}= (-4-2)^{2}+ (8+1)^{2}=36+81=117

So we can say that

JK^2 + KL^2=JL^2

By converse of pythagorean theorem we get

Hence the Vertex of the right angle is K(-4,8)

K(-4,8) is the ortho center.

7 0
3 years ago
A bead necklace uses beads whose diameter, d, ranges from 5 millimeters to 8 millimeters (inclusive). The number of beads in a n
wolverine [178]
The Answer is B Cause if u describe the number of beads u will get a correct answer
Hope this Halps :D
4 0
3 years ago
No idea how to do this need help.
Arlecino [84]

Answer:

Hope that helps

Step-by-step explanation:

Brainliest would be much appreciated

3 0
2 years ago
A rectangular prism has the following dimensions. length: 18 inches width: 1 foot height: 14 inches If all the dimensions of thi
mojhsa [17]

Answer:

11,448 in²

Step-by-step explanation:

The area can be computed from ...

... A = 2(LW +H(L+W))

For the given prism, the area will be ...

... A = 2(18·12 +14(18+12)) = 2(216 +420) = 1272 . . . . in²

The area of a similar figure with dimensions 3 times as long will be 3² times as much. The area of the new figure is ...

... A = 3²×(1272 in²) = 11,448 in²

3 0
3 years ago
Read 2 more answers
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