MATHEMATICS MIDDLE SCHOOL

Evaluate the expression, using the given value of the variable. z ÷ 2 – 4z + 3(z – 3) when z = 8     A. –17   B. –13   C. –7   D. –1 

Solve for x. 3 • 4 – 3 • 7 = 3(x – 7)   A. 4   B. –10   C. 6   D.         -3

                                                                                                             

Answers

Answer 1
Answer: z : 2 - 4z + 3(z - 3)= z\cdot (1)/(2) - 4z + 3 z - 9= -(1)/(2)z -9 \n \n z= 8 \n \n-(1)/(2)z -9 =-(1)/(2) \cdot 8 -9 =-4-9=-13 \n \n Answer : \ B. \ \ -13



3 \cdot 4 - 3 \cdot 7 = 3(x - 7) \n \n 12-21 =3x-21\n \n3x =12-21+21\n \n3x=12 \ \ /:3\n \n x=4 \n \n Answer : \ A. \ \ 4

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Neil has a total of twelve $5 and $10 bills in his wallet. He has 5 times as many $10 bills as $5 dollar bills. How many of each does he have?

Answers

There are two $5 bills and ten $10 bills in Neil's wallet and this can be determined by forming the linear equation in two variables.

Given :

  • Neil has a total of twelve $5 and $10 bills in his wallet.
  • Neil has 5 times as many $10 bills as $5 dollar bills.

Let the total number of $5 bills be 'a' and the total number of $10 bills be 'b'. Then the total number of bills will be:

a+b = 12  --- (1)

It is given that Neil has 5 times as many $10 bills as $5 dollar bills, that is:

5a = b  ---- (2)

Now, substitute the value of 'b' in equation (1).

a + 5a = 12

6a = 12

a = 2

Now, put the value of 'a' in equation (2).

5* 2 = b

b = 10

There are two $5 bills and ten $10 bills in Neil's wallet.

For more information, refer to the link given below:

brainly.com/question/13738061
2 5 dollar bills
10 10 dollar bills

ammount of 5 dollar bills= x
amount of 10 dollar bills = y
5x=y
x+y=12

x+5x=12

6x=12

x=2

12-x=y

12-2=y

10=y 

Please help me with this

Answers

Answer:

30 degrees

Step-by-step explanation:

We know that the angle is going to be half of the minor arc it encompasses.

Since the minor arc is 60 degrees, the angle is 30 degrees!

23 POINTS PLZ HELP Explain at least one reason why knowing the surface area or the volume of your rectangular prism is important

Answers

Knowing the surface area of a rectangular prism is important to know because it helps you come up with a formula for most equations

As Ruth Ann is researching careers, she decides she enjoys living in her hometown and doesn’t want to relocate. Which factor might have a strong impact on her career decisions? the career’s location the career’s average salary the career’s outlook the career’s employee benefits

Answers

The career's location might have a strong impact on Ruth Ann's career decisions, as she has already decided that she enjoys living in her hometown and doesn't want to relocate.

Relocating means to relocate to a new location, usually for work or personal reasons. It usually entails leaving one's current home or job and moving to a new one.

Ruth Ann's career decisions may be influenced by the location of the job, as she has already decided that she enjoys living in her hometown and does not want to relocate.

If the job she wants is not available or in high demand in her hometown, she may need to consider relocating or changing careers. As a result, the location of the job is an important factor to consider.

For more details regarding career, visit:

brainly.com/question/30040900

#SPJ7

Answer: the careers location

Step-by-step explanation:

its correct

What is the greatest common factor of 30 and 45

Answers

So to find the Greatest Common factor we need to list the factors of 30 and 45.

30: 1,2,3,5,6,15,30
45: 1,3,5,9,15,45

As you can see the greatest factor of BOTH of them is 15 so The Greatest Common Factor of 30 and 45 is 15! Hope I helped you with your question! Have a great day! =)
when you find the (gcf) you start like putting each others factors together trying to see, if there are any same numbers, you keep piling, and when you come up to the biggest you can get up to, then that is your answer! if you do this one correctly, you should get the answer as 15
the answer would be 15.
Hope that this would help you! =)

Which is longer: 180 sec or 3 mins? Explain how you decided.

Answers

none of them is long because 3 minutes have 180 seconds they both are equal . you will be wondering how i know it same well  one minute have 60 seconds so 60+60+60 = 180 secs
they are both equal because 60 sec are in a minute and 180 = 3 minutes
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