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madreJ [45]
3 years ago
15

Solve each system of equations using matrices. -2x = -6y + 8 2y = x + 1

Mathematics
1 answer:
Elden [556K]3 years ago
6 0

Answer:    1.) x - 2y = 4 , add 2y to both sides. ---> answer is, X = 2y + 4

2.) 2x - 6y = 8, Add 6y to both sides, then divide both sides by 2. --> answer is, X = 3y + 4

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Which product is modeled by the number line below?
Gnoma [55]

Answer:

(B)(negative 2) (4)

Step-by-step explanation:

The arrow on the number line ended at negative 8 (-8).

Given the options:

(A) (negative 3) (4) =(-3)(4)=-12

(B)(negative 2) (4) =(-2)(4)=-8

(C) (2)(4)=8

(D)(3)(4)=12

The expected product is -8 since that is where the arrow ended. Therefore, the product that is modeled by the number line is that which gives a result of -8. The correct option is B.

(B)(negative 2) (4) =(-2)(4)=-8

4 0
3 years ago
Read 2 more answers
Nikos finds a toy train set on sale for 20% off at a toy store. The original price was $35. Nikos must also pay 6.5 sales tax. W
Anvisha [2.4K]

Answer:$29.82

First find the discount, then find the tax

5 0
3 years ago
What is the answer for <br> 4[8-(8)]+1
ivann1987 [24]

Answer:1

Step-by-step explanation:

7 0
3 years ago
1. What is the measure in radians for the central angle of a circle whose radius is 6 cm and intercept arc length is 5.4 cm?
fgiga [73]
Hello!

1.
find circumferece
c=2pir
c=2*6*pi=12pi
intercept is 5.4

2pi radians=all

part/whole=part/whole
5.4/12pi=x/2pi
times both sides by 12pi
5.4=6x
divide both sides by 6
0.9=x
answer is 0.9 radians



2. 
assuming 9pi/5 radians

find circumference
c=2pir
c=2*26.9*pi
c=53.8pi

arc/circumference=(9pi/5)/2pi

x/(53.8pi)=(9pi/5)/(2pi)
x/(53.8pi)=18/5
times both sides by 53.8pi
x=608.46266 m
about x=608.46 m


Hope this Helps! Have A Wonderful Day! :) 
5 0
3 years ago
Sara bought a used car for $10,000. She learned from online that the value of a car depreciated 15% per year. What is the formul
Fudgin [204]

Answer:

Step-by-step explanation:

Value of Sam's car after t years =

==10000*(1-\frac{15}{100})^{t}\\\\=10000*(\frac{85}{100})^{t}\\\\=10000*(0.85)^{t}

Value of Sam's car in 5 years=

=10000*(0.85)^{5}\\\\=10000*0.4437\\\\

= $ 4437

4 0
3 years ago
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