MATHEMATICS MIDDLE SCHOOL

6. What steps would you take to solve the equation: 3x + 2 = 23 *7. What steps would you take to solve the equation: -2y - 7 = 3 *
8. True or false: in order to solve the following equation, you would first subtract by 4, then multiply by 5/1 *
4+1/5=-1

Answers

Answer 1
Answer:

To solve 3x + 2 = 23 you must:

Subtract 2 from both sides so like this 3x+2−2=23−2  and get 3x=21.

Now Divide both sides by 3 so 3x/3=21/3. Mainly divide 21/3 and get 7.

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To solve  -2y - 7 = 3 you must:

Add 7 to both sides so like this −2y−7+7=3+7  and get −2y=10.

Now Divide both sides by -2 so -2y/-2=10/-2. Mainly divide 10/-2 and get 5.

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False

Related Questions

10.25Geno had a gift card for $40. He bought a DVD for $19.50. He spent the remaining amount on two video games. To find the cost of each video game, he used the following steps. 40.00 - 19.50 = 20.50 20.50 ÷ by 2 = 10.25 each video cost Geno now wants to write an equation to solve the problem. He let g = cost of a video game. Which equation can be used to find the cost of each video game? A. 2g = 19.5 B. 2g + 40 = 19.5 C. 2g –19.5 = 40 D. 19.5 + 2g = 40
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Which fraction is greater between 3/8 2/8 312-6512
Julie spends $ 5.62 at the store. Micah spends 5 times as much as Julie. Jeremy spends $6.72 more than Micah . How much does each person spend?
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Find the GCF of each number.

75 ¢, 25¢, $1.50, $3.00

Answers

So,

To find the G.C.F. of $0.75, $0.25, $1.50, and $300,

Think of them as 75, 25, 150, and 300.

Find the prime factored form (P.F.F.) of each number.

P.F.F. of 75: 3*5*5

P.F.F. of 25: 5*5

P.F.F. of 150: 2*3*5*5

P.F.F. of 300: 2*2*3*5*5

Find common groups.

5*5 is in all of them.

5(5) = 25

25 is the G.C.F. of 75, 25, 150, and 300 ($.75, $.25, $1.50, and $3.00).
the gcf of 75 cents, 25 cents ,$1.50 and $3.00 is 25 cents

In Mr. Diaz’s class, 20% of the students received a grade of “A” on their report cards. There are 25 students inMr. Diaz’s class. How many students received a grade of “A” on their report cards?

Answers

25/x=100/20 criss cross and u will get 500/100=5 then 5 students resivs A.
Im not sure but I think 5 because there are 25 students so put 25 in the denominatorSet up a proportionPut 20 over 100 because percent means something over 10025 times 4 is 10020 divided by 4 is 5So the answer is 5

Length of your thumb metric unit and customary

Answers

From the first joint of your thumb (one right below fingernail) to the tip of your thumb is approx 2.54 cm.

it is apox. one inch

The volume of a sphere is 500
3
πcm3. What is the radius?

Answers

Answer:

Step-by-step explanation:

The volume of a sphere is 500 3 πcm3. what is the radius? sphere v = 4 3 πr3 1. substitute value into formula:   500 3 π = 4 3 πr3 2. undo multiplication of 4 3 :     125π = πr3 3. undo multiplication of π:     125 = r3 4. undo cube:          3√125 = r the radius of the sphere is 6 ⇒ 5 cm

Answer:

about 4.9 cm

Step-by-step explanation:

The equation for the volume of a sphere is V= (4)/(3)\pi r^3 . So, to solve this problem we will plug in 500 for V and solve for the radius, r.

  1. 500= (4)/(3) \pi r^3
  2. Multiply both sides by 3: 1500=4\pi r^3
  3. Divide both sides by 4: 375=\pi r^3
  4. Divide both sides by \pi: (375)/(\pi ) =r^3
  5. Find the cubed root of both sides: 4.9237=r
  6. The radius is about 4.9 cm

Use the distributive property to evaluate 4(2x - 1) when x = 5

Answers

The value of the expression, when the value of x equal to 5, will be 36.

What is Algebra?

The analysis of mathematical representations is algebra, and the handling of those symbols is logic.

The expression is given as,

⇒ 4(2x – 1)

On applying distributive property, we have

⇒ 8x – 4

Then the value of the expression when the value of x equal to 5, will be

⇒ 8 x 5 – 4

⇒ 40 – 4

⇒ 36

More about the Algebra link is given below.

brainly.com/question/953809

#SPJ2

Answer:

36

Step-by-step explanation:

4(2(5) -1)

4(10-1)

40-4

=36

OR

**You can subtract 10 and 1 first instead of distributing 4 into each number. Either way, you still get 36**

Why are all 6- digit Fredholl numbers composite?

Answers

If we have a 6 -digit fredholl number, all numbers must consist of 3 occurrences of digits A, and 3 occurrences of digits B.
So a sum of their digits is 3a+3b  
3a+3b=3(a+b) and this number is  divisible by 3,
Therefore any 6-digit fredholl number is divisible by 3.
If a number is divisible by any other number than 1 and itself, we call that number a composite number.
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