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DedPeter [7]
4 years ago
6

Which matrix equation represents the system of equations? x+y=5 x-2y=-4

Mathematics
1 answer:
adoni [48]4 years ago
8 0

Answer:

  see below

Step-by-step explanation:

The variables are listed top down in the variable vector in the same order as the coefficients are listed left-to-right in the equations. Each of the equations needs to have the variables listed in the same order.

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Is 12 posters for 36 students equivalent to 21 posters to 63 student
Dmitry [639]

yes.

this is division. 36 divided by 12 is 3. 63 divided by 21 is 3.

3 0
4 years ago
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Marge purchased bicycle helmets and tire pumps. Each helmet cost $12.00 and each pump cost $8.00. She purchased a total of 18 it
algol [13]

Answer:

11

Step-by-step explanation:

Let the no. of helmet be x

cost of 1 helmet = $12.00

cost of x helmet = $12.00*x = $12x

Let the no. of tire pumps be y

cost of 1 tire pumps = $8.00

cost of x tire pumps = $8.00*y = $8y

Given that total no. of helmet and pump is 18

thus

x + y = 18

y = 18-x

also given

total money spent is $188

thus

12x+8y = 188

using y = 18 - x

we have

12x + 8(18-x) = 188

=> 12x+ 144 - 8x = 188

=> 4x = 188-144 = 44

=> x = 44/4 = 11

Thus, no of helmet bought by Margo is 11.

7 0
3 years ago
Please help which one is it!!
sasho [114]
Last one and first. You can find out why by isolating the cube root and cubing both sides.
6 0
2 years ago
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Xavier Martinez took out a $5,000 loan at 7.5% interest for reconstructing his patio. His monthly payment on the 12-month loan w
Norma-Jean [14]
Paying off the entire loan = 12 * 437.26 = <span> <span> <span> 5,247.12 </span> </span> </span>
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<span> <span> 5,247.12 </span> minus </span><span>5,179.59 =
67.53 the amount of money he saved.

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4 years ago
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What are the zeros of the function f(x)=x2+12x+38
Artemon [7]

Answer:

The zero would be -2.714 (x-intercept)

6 0
3 years ago
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