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3 years ago

Rewrite each pair of fractions using the least common denominator 5/6 2/5

Mathematics

2 answers:

Ivanshal [37]3 years ago

5 0

Answer:

25/30 and 12/30

Step-by-step explanation:

6 and 5 have a least common multiple of 30

6*5 = 30

5/6 * 5/5 = 25/30

2/5 *6/6 = 12/30

8_murik_8 [283]3 years ago

5 0

Answer:

10/12 4/10

Step-by-step explanation:

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Alvin completely filled his 21-gallon

Valentin [98]

Answer:

7 cents per gallon if his tank was completely empty upon filling

Step-by-step explanation:

55.23/21=2.63 per gallon at original gas station

2.63-2.56=.07 per gallon saved

7 0

3 years ago

Read 2 more answers

Find each missing length, make sure you give both exact AND approximate. Brainliest + 50pts

goldenfox [79]

B²=15²-7²
B²=225-49
B²=176
B=13.26(exact)
B=13.3(approx)

B²=17²-7²
B²=289-49
B²=240
B=15.49(exact)
B=15.5

H²=20²+14²
H²=400+196
H²=596
H=24.41(approx)
H=24.4(exact)

B²=6²-3²
B²=36-9
B²=27
B=5.196(exact)
B=5.2(approx)

3 0

2 years ago

Ursula and Andre competed against each other in a swimming race. Ursula swam at a rate of 60 meters per minute and Andre swam at

Lubov Fominskaja [6]

Given that the two swimmers competed and Ursula's speed is 60 m/min while Andre's speed is 48 m/min. The distance that the Ursula will catch up with Andre will be:
distance=(relative speed)×(time)
relative speed=60-48=12 m/min
the two swimmers met at a distance of:
12×1
=12 meters

6 0

3 years ago

Solve x2 + 8x − 3 = 0 using the completing-the-square method.

lisabon 2012 [21]

$(a+b)^2=a^2+2ab+b^2\\------------------\\\\x^2+8x-3=0\ \ \ |add\ 3\ to\ both\ sides\\\\x^2+2x\cdot4=3\ \ \ |add\ 4^2\ to\ both\ sides\\\\x^2+2x\cdot4+4^2=3+4^2\\\\(x+4)^2=3+16\\\\(x+4)^2=19\iff x+4=-\sqrt{19}\ or\ x+4=\sqrt{19}\\|subtract\ 4\ from\ both\ sides\\\\\boxed{x=-4-\sqrt{19}\ or\ x=-4+\sqrt{19}}$

3 0

4 years ago

Read 2 more answers

If QR= 3x-2, RS= 2x+1, QS=6x-3, and R is between Q and S, then RS=

rewona [7]

Answer:

RS = 5

Step-by-step explanation:

Since R is between Q and S , then

QS = QR + RS , that is

6x - 3 = 3x - 2 + 2x + 1

6x - 3 = 5x - 1 ( subtract 5x from both sides )

x - 3 = - 1 ( add 3 to both sides )

x = 2

Then

RS = 2x + 1 = 2(2) + 1 = 4 + 1 = 5

4 0

3 years ago