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3 years ago

Question: When you do adding fractions, do you have to find a common demoniter? sorry for misspelling

1 answer:

5 0

Answer: yes when your adding or subtracting fractions you must find the common denominator between the two before you continue.

Step-by-step explanation:

Example: 2/4+3/2

Find the common denominator. ( in this case the common denominator is 4)

We keep the first fraction as it is cause it has the denominator 4 and we multiply the second fraction by 2 up and down to get a denominator of 4. The equation becomes 2/4+6/4

Now you add the numerators and you got your answer ( don’t forget to simplify)

The answer after adding in this case is 8/4 and when simplified it is 2

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The second term in a geometric sequence is 20. The fourth term in the same sequence is 45/4, or 11.25. What is the common ratio

Elanso [62]

We use equations for geometric sequence. We do as follows:

a(n) = a(1) r^(n-1)
20 = ar^(2-1)
20 = ar
a = 20/r

11.25= ar^(4-1)
11.25 = ar^3
11.25 = (20/r)r^3
r = 0.75

Hope this answers the question. Have a nice day.

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4 years ago

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Taylor got 10 out of 12 correct on a proficiency. What percent did she earn?

Lyrx [107]

Answer:

83 percent

Step-by-step explanation:

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3 years ago

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Which table does not represent a proportional relationship? A) A 2-column table with 3 rows. Column 1 is labeled x with entries

BlackZzzverrR [31]

Answer: B

Step-by-step explanation:

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3 years ago

©MP.4 Model with Math

evablogger [386]

Answer:

The drawings are in the picture attached and the explanations are below.

Question 1.

Equation: w = 10 × 8 lb

Solution: x = 80 lb

Question 2:

Equation: d = 10×8 lb - 8 lb
Solution: d = 72 lb

Explanation:

Question 1:

Statement 1: Mary was born, she weighet 8 lbs
Statement 2: When she was 10 years old weighed 10 times as much

w = 10 × 8 lbs = 80 lbs

Explanation of the drawing:

Each cell represents 8 lbs, which was the weight when she was born. There are 10 cells, representing that the amount 8 lbs is repeated 10 times.

Then, the multiplication is represented an abbreviated sum:

8 + 8 + 8 + 8 + 8 + 8 + 8 + 8 + 8 + 8 = 10 × 8 = 80

Question 2:

Statement: find the difference, d, between Mary's weight when she was 10 years old and when she was born.

d = 80 lbs - 8 lbs = 72 lbs

↑ ↑ ↑ ↑

difference 10 years old born solution

Explanation of the drawing:

When you subtract one cell (8 lb) from ten cells (10 × 8 = 80 lb), you obtain nine cells ( 9 × 8 lb = 72 lb).

6 0

3 years ago

Help please i am stuck on what to do

nikklg [1K]

Answer:

These are confusing Beth , b/c you have to remember that they will add to 100%

Step-by-step explanation:

green = 3* yellow

100% = green + yellow + 35% + 25%

100% = 3* yellow + yellow +60%

40% = 4* yellow

10% = yellow

30% = green

there are 14 purples in the bag , which is 35% of total

14/.35 = 40

there are a total of 40 pins

4 are yellow (10% of 40 or 40* 0.1)

12 are green (30% of 40 or 40*0.3)

14 are purple (35% of 40 or 40*0.35)

10 are grey (25% of 40 or 40*0.25 )

see? : |

6 0

3 years ago

Question: When you do adding fractions, do you have to find a common demoniter? *sorry for misspelling*

Question: When you do adding fractions, do you have to find a common demoniter? sorry for misspelling