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GrogVix [38]
3 years ago
13

I need help with 14 and 15 ASAP

Mathematics
1 answer:
kow [346]3 years ago
6 0
14. 6/10
To solve this, multiply both numbers (numerator/dominator) by 2. It is the same amount, just written differently. 

15. Lynn has more ribbon
This one is a little trickier. Find the fraction with the smallest dominator (bottom number) and multiply it by 2 to get 8. Then multiply the numerator (top number) by 2 as well. It ends up now being 6/8. 
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Factor completely 4x2 − 8x + 4.
olga nikolaevna [1]

<u>Given </u><u>:</u><u>-</u><u> </u>

  • 4x² - 8x - 4 .

<u>To </u><u>Find</u><u> </u><u>:</u><u>-</u><u> </u>

  • To find the factorised form .

<u>Answer</u><u> </u><u>:</u><u>-</u><u> </u>

Taking the given expression,

→ 4x² - 8x + 4

→ 4x² - 4x -4x + 4

→ 4x ( x - 1 ) -4( x -1)

→ (4x - 4)(x-1)

<u>Hence </u><u>the</u><u> </u><u>required</u><u> answer</u><u> is</u><u> </u><u>(</u><u>4</u><u>x</u><u> </u><u>-</u><u> </u><u>4</u><u>)</u><u>(</u><u> </u><u>x </u><u>-</u><u> </u><u>1</u><u>)</u><u> </u><u>.</u>

4 0
3 years ago
Please help me , fast
Vesnalui [34]

Answer:

0.3 with the hat ? the answer is first no, then it's a repeated decimal.

Step-by-step explanation:

5 0
3 years ago
You have 7 consecutive numbers, with the smallest number n.
Romashka [77]

Answer:

a) 7 numbers in term of n = n+1, n+2, n+3, n+4, n+5, n+6 and n+7

b) n+1+n+2+n+3+n+4+n+5+n+6+ n+7

= 7n+28

Step-by-step explanation:

If you like my answer than please mark me brainliest thanks

3 0
3 years ago
The cost for two different companies to make x candles is shown on the graph.
tia_tia [17]

Answer:

D) Quick Wick will make more candles when the cost is $600.

Step-by-step explanation:

Find the initial value (b) and the cost per candle (m), to write the equation of each line in the slope-intercept form, y = mx + b. This will help for easy comparison.

✔️Wax Art:

m = change in y/change in x

Using (10, 140) and (20, 180),

m = (180 - 140)/(20 - 10) = 40/10

m = 4

Cost per candle = $4

To find b, substitute (x, y) = (10, 140) and m = 4 into y = mx + b

140 = 4(10) + b

140 = 40 + b

140 - 40 = b

100 = b

b = 100

Initial value = $100

To get the equation, substitute m = 4 and b = 100 into y = mx + b

y = 4x + 100

✔️Quick Wick:

m = change in y/change in x

Using (10, 120) and (30, 180),

m = (180 - 120)/(30 - 10) = 60/20

m = 3

Cost per candle = $3

To find b, substitute (x, y) = (10, 120) and m = 3 into y = mx + b

120 = 3(10) + b

140 = 30 + b

120 - 30 = b

90 = b

b = 90

Initial value = $90

To get the equation, substitute m = 3 and b = 90 into y = mx + b

y = 3x + 90

Let's analyse each option given using the information we now have:

✔️Option A: INCORRECT

Cost per candle for made is $1 less for Quick Wick. I.e. cost per candle for Quick wick is $3. Cost per candle for Wax Art is $4.

✔️Option B: INCORRECT

Difference between the initial value sof the two companies = $100 - $90 = $10

✔️Option C:

Find the cost of making 50 candles for each company by substituting x = 50 into each of their equations. Thus:

Wax Art => y = 4x + 100

y = 4(50) + 100

y = $300

Wax Art will make 50 candles for $300

Quick Wick => y = 3x + 90

y = 3(50) + 90

y = $240

Quick Wick makes 50 candles for $240

As we can see, Quick wick is making 50 candles at a lower cost than Wax Art.

Therefore, option C is INCORRECT.

✔️Option D: find out how many candles (x) each company will make when the cost is $600.

Substitute y = 600 in each equation of both companies

Wax Art => y = 4x + 100

600 = 4x + 100

600 - 100 = 4x

500 = 4x

500/4 = x

x = 125 candles

Quick Wick => y = 3x + 90

600 = 3x + 90

600 - 90 = 3x

510 = 3x

510/3 = x

x = 170 candles

Quick Wick will make more candles when he cost is $600.

Therefore, option D is the only CORRECT statement of comparison.

6 0
2 years ago
Rachel earned $34 in 4 hours at her job today she wants to know how much she could earn(e) tomorrow if she works 10 hours at the
nlexa [21]

Answer:

85 dollars

Step-by-step explanation:

6 0
3 years ago
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