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harkovskaia [24]

3 years ago

9

Find the value of x when 6-3x= 5x-10x+20

1 answer:

icang [17]3 years ago

5 0

Answer:

7

Step-by-step explanation:

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Find the product and simplify.<br> (k+ 4)(-4k – 5)

torisob [31]

The answer is -4k^2 - 21k - 20! so sorry if I’m wrong but it’s the answer I got :>

3 0

3 years ago

What is the domain and range please?

Stella [2.4K]

The second graph: y = 3
Domain: all real number
Range: y = 3

7 0

3 years ago

What is the sum of 1/4 and 3/8

kupik [55]

$\dfrac{1}{4}+\dfrac{3}{8}=(*)\\Find\ LCD\ (Least\ Common\ Denominator)\\list\ the\ multiples\\of\ 4:\ \ 0;\ 4;\ \fbox8;\ 12;...\\of\ 8:\ \ 0;\ \fbox8;\ 16;\ 24;\ ...\\LCD\left(\dfrac{1}{4};\ \dfrac{3}{8}\right)=8\\\\(*)=\dfrac{1\cdot2}{4\cdot2}+\dfrac{3}{8}=\dfrac{2}{8}+\dfrac{3}{8}=\dfrac{2+3}{8}=\dfrac{5}{8}$

4 0

4 years ago

What is the square root of 1 2/5 ?

Oksi-84 [34.3K]

Answer:

Square root of 1 is 1

Square root of 2 is 1.41421356237 so 1.41

square root of 3 is 1.73205080757 so 1.73

Step-by-step explanation:

5 0

3 years ago

A long distance runner does a first lap around a track in exactly 50 seconds.As she tires.Each subsequent lap takes 20% longer t

madreJ [45]

Answer:

182 seconds

Step-by-step explanation:

Given:

Time taken for first lap is 50 seconds and each subsequent lap takes 20% longer than previous

Solution:

Time taken for first lap = 50 sec

For second lap

Each subsequent lap takes 20% longer than previous

Previous lap time = 50 sec

second lap = 50 + 20% of 50

second lap $=50+(\frac{20}{100}\times 50)$

second lap $= 50 + 10$

second lap $= 60\ sec$

For third lap

Each subsequent lap takes 20% longer than previous

Previous lap time = 60 sec

Third lap = 60 + 20% of 60

$Third\ lap = 60 + (\frac{20}{100}\times 60)$

$Third\ lap = 60+2\times 6$

$Third\ lap = 60+12$

$Third\ lap = 72\ sec$

Time taken for 3 laps is equal to sum of all three laps time.

$Tiem\ taken\ for\ 3\ lap = 50+60+72$

$Tiem\ taken\ for\ 3\ lap = 182\ sec$

Therefore, it takes 182 seconds (3 min, 2 seconds) to run three laps

6 0

4 years ago