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nalin [4]
3 years ago
15

How to solve b/2= -4

Mathematics
1 answer:
kobusy [5.1K]3 years ago
6 0

Answer:

b = -8

Step-by-step explanation:

crossmultiply

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Mr. Martin's math test, which is worth 100 points, has 35
AlekseyPX

Number of questions worth 5 points = 10

Number of questions worth 2 points = 25

Further explanation:

The given system is a system of linear equations in two variables.

We will use the subsitution method to solve the system

Given equations are:

x+y=35\\5x+2y=100

From equation no 1:

x+y=35\\x=35-y

Putting x=35-y in second equation

5x+2y=100\\5(35-y)+2y=100\\175-5y+2y=100\\-3y=100-175\\-3y=-75\\\frac{-3y}{-3}=\frac{-75}{-3}\\y=25\\Putting y=25 in first equation\\x+25=35\\x= 35-25\\x=10

Hence,

Number of questions worth 5 points = 10

Number of questions worth 2 points = 25

Keywords: Linear Equations, Substitution method

Learn more about substitution method at:

  • brainly.com/question/11566221
  • brainly.com/question/13063819

#LearnwithBrainly

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3 years ago
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A cable company charges $70 per month for cable service. Please help ASAP Check screenshot pleasee (20 points) Thank youu! :)) &
LiRa [457]

Answer:

for #1: 70x = y

for #2: 70x + 100 = y

Step-by-step explanation:

you pay $70 for x amount of time with will equal your total therefore it's 70x = y

if you have to pay a one-time fee of $100.00 then you have to add that to your equation giving you 70x + 100 = y

hope this is right

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How is the counting principle mathematically used?
Paha777 [63]

Answer: multiplying outcomes

Step-by-step explanation:

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1)Find the area of a parallelogram with base b and height h
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Answer:

i got A

Step-by-step explanation:

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Sarah was as hungry as a momma grizzly bear just walking from hibernation.
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A. Ferocity. Because when a bear comes out of hibernation it's hungry after going without food or water for so long. 
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