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3 years ago

Need help on C and D, please help.

Mathematics

1 answer:

Mekhanik [1.2K]3 years ago

6 0

C. 1/5,2/5,3/5,4/5 and 1 since all will be on the same mark as 2/10,4/10,6/10,8/10 and 10/10.
d. there would be 10/10 for every 0 to 2.

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Everything is in the pic

Scrat [10]

Answer:

The correct answer is D) 4/5 and 40/50

Step-by-step explanation:

In order to find this, do the division and find the decimal answer. When they match, they are equivalent.

4/5 = .8

40/50 = .8

4 0

3 years ago

PLEASE HELP< BEST ANSWER WILL GET MARKED BRAINIEST

Artist 52 [7]

Answer:

√1=1 so side is1

√9=3so side is3

√16=4so side is4

√25=5 so side is5

4 0

3 years ago

What is the expression and value of “six less than nine times the sum of a number and eight” when n = 5

Vikentia [17]

Answer:

The expression is 9(n + 8) - 6, the value is 111 ⇒ answer A

Step-by-step explanation:

* Lets explain how to solve the problem

- We have a statement:

" six less than nine times the sum of a number and eight"

- When we solve we will start by the last part

- The last part is the sum of a number and 8

- Assume that the number is n

∵ The sum is the answer of adding

∴ The sum of a number and eight is ⇒ n + 8

- Nine times the sum

∵ The sum is n + 8

∵ Nine times means multiply the sum by 9

∴ Nine times the sum is ⇒ 9(n + 8)

- Six less than nine times the sum

∵ Nine times the sum is 9(n + 8)

∵ Six less than means subtract 6 from nine times the sum

∴ Six less than nine times the sum is ⇒ 9(n + 9) - 6

*<em> </em><em>The expression is 9(n + 8) - 6</em>

- Lets evaluate the expression when n = 5

∵ 9(n + 8) - 6

∵ n = 5

∴ The value = 9(5 + 8) - 6

∴ The value = 9(13) - 6

∴ The value = 117 - 6

∴ The value = 111

* <em>When n = 5 the value of the expression is 111</em>

8 0

3 years ago

Read 2 more answers

50 POINTS TO WHOEVER CAN ANSWER QUESTIONS 1-10

Trava [24]

Answer:

1) x = 4 2) x = 4 3) x = -4 4) x = 3 5) x = 5 6) x = 9 7) x = -8

8) x = 11 9) x = -5 10) x = -4

Step-by-step explanation:

Alternate Exterior and Alternate Interior angles are equal to each other. Just set the numbers or equations the give you equal to each other.

Question 1: Question 2: Question 3: Question 4:

33x+3=135 120=31x-4 120=x+124 40x+5=42x-1

33x=132 124=31x -4=x 6=2x

x=4 x=4 x= -4 x=3

Question 5: Question 6: Question 7: Question 8:

20x+4=19x+9 11x= -9+12x 80=x+88 10x+20=12x-2

-5= -x -x = -9 -8 = x 22=2x

x=5 x= 9 x= -8 x=11

Question 9: Question 10:

70=x+75 130=x+134

-5 = x -4 = x

x = -5 x= -4

8 0

3 years ago

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What is the value of x in the equation below 6 (x - 8) equals 72

olga_2 [115]

Here is the equation:

$6(x-8)=72$

In the equation, 6 is being multiplied by x - 8. There are two ways to solve this equation.

FIRST METHOD

You need to remove the parentheses by multiplying everything in the parentheses by 6.

$6(x-8) = (6\times x) + (6 \times -8)$

Multiply:

$6 \times x = 6x\\6 \times -8 = -48$

Remember:

NEGATIVES

Negative(-) times(×) negative(-) = positive(+)

Negative(-) times(×) positive(+) = negative(-)

Negative(-) divided(÷) by positive(+) = negative(-)

Negative(-) divided(÷) by negative(-) = positive(+)

POSITIVES

Positive(+) times(×) positive(+) = positive(+)

Positive(-) times(×) negative(-) = negative(-)

Positive(+) divided(÷) by positive(+) = positive(+)

Positive(+) divided(÷) by negative(-) = negative(-)

Now combine the two values and rewrite the equation:

$6x+-48 \rightarrow 6x-48=72$

Since you're looking for x alone, you will need to remove the -48. This can be done by adding 48 to both sides, -48+48=0, which cancels it out).

$6x-48+48=72+48\\6x=120$

Lastly, divide both sides by 6 to leave x alone.

$\frac{6x}{6} = \frac{120}{6}$

$x=20$

SECOND METHOD

While the first step is somewhat complicated, there is a much easier way.

$6(x-8)=72$

Start by dividing both sides by 6 to remove the number next to the parentheses.

$\frac{6(x-8)}{6} =\frac{72}{6}$

$x-8=12$

(The 6 is cancelled out since 6 divided by 6 equals 1, and 1 × any number is that number).

Now you need to leave the variable alone, which can be done by adding 8 to both sides(-8+8=0 and -8 is cancelled out).

$x-8+8=12+8\\$

$x=20$

Either method can be used, but the second one is definitely shorter!

The answer is x = 20.

8 0

3 years ago

Read 2 more answers