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satela [25.4K]
3 years ago
11

ANSWER PLEASE FREEEE POINTSSSSSSSS A cell phone company charges $50 for the phone plus a monthly service charge of $30. The equa

tion y= 30x+ 50 gives the cost y after x months. Which is true of the relationship between x and y? A It is linear and proportional. B It is linear and nonproportional. C It is not linear.
Mathematics
2 answers:
dusya [7]3 years ago
4 0

Answer:

The correct answer is cost = 50 + 30x

Step-by-step explanation:

iris [78.8K]3 years ago
3 0

Answer:

The answer is cost = 50 + 30x

Step-by-step explanation:

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Nitella [24]

Answer:

Question 6

\left(5a+2\right)\left(a+4\right)=\:5a^2+22a+8

Question 7

The width is 2x.

Step-by-step explanation:

                                           Question 6)

Expand

(5a+2)(a+4)

solving to the expand

(5a+2)(a+4)

  • \mathrm{Apply\:FOIL\:method}:\quad \left(a+b\right)\left(c+d\right)=ac+ad+bc+bd

a=5a,\:b=2,\:c=a,\:d=4

so the expression becomes

=5aa+5a\cdot \:4+2a+2\cdot \:4

=5aa+5\cdot \:4a+2a+2\cdot \:4

=5a^2+20a+2a+8

adding similar elements: 20a+2a=22a

=5a^2+22a+8

Hence,

\left(5a+2\right)\left(a+4\right)=\:5a^2+22a+8

                                                  Question 7)

Given

  • A\:=\:8x^2
  • l=4x

Using the formula

width = Area/Length

          =\:\frac{8x^2}{4x}

          =2x                  ∵ \mathrm{Divide\:the\:numbers:}\:\frac{8}{4}=2

Therefore, the width is 2x.

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3 years ago
Find the distance a(3, -1) b(0, -4)
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Answer:

Distance =

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Answer:

Step-by-step explanation:

cows   chickens    legs                                               animals

 1               11             26        (1×4+11×2=4+22=26)     1+11=12

 2               9            26        (2×4+9×2=8+18=26)      2+9=11

 3               7          26         (3×4+7×2=12+14=26)      3+7=10

 4               5          26         (4×4+5×2=16+10=26)      4+5=9

 5               3           26        (5×4+3×2=20+6=26)      5+3=8

 6               1            26        (6×4+1×2=24+2=26)       6+1=7

1. minimum number of animals=7

2. chickens=3

3. cows=4

chickens=5

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