3 years ago

Help plssssss show work

Mathematics

2 answers:

andrew11 [14]3 years ago

6 0

Answer:19/12

Step-by-step explanation:

Find common denominator, in this case 12.

lutik1710 [3]3 years ago

5 0

Answer:

19/12

Step-by-step explanation:

Make the denominators common, this case would be 12.

5/6*2=10/12

3/4*3=9/12

Add: 10/12+9/12=19/12

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Ali and Ben measured their heart rates. The

Vedmedyk [2.9K]

Answer:

Ali's heart rate is 135 beats per minute

Step-by-step explanation:

Let

x ----> Ali's heart rate

y ----> Ben's heart rate

we know that

$\frac{x}{y}=\frac{15}{17}$

isolate the variable x

$x=\frac{15}{17}y$ ----> equation A

we have

$y=x+18$ ---> equation B

Solve the system by substitution

substitute equation B in equation A

$x=\frac{15}{17}(x+18)$

Solve for x

$x-\frac{15}{17}x=\frac{15}{17}(18)$

$\frac{2}{17}x=\frac{270}{17}$

simplify

$2x=270\\x=135\ beats\ per\ minute$

therefore

Ali's heart rate is 135 beats per minute

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3 years ago

Kelly bought a wooden bench marked down from $175 to $154. What percentage is the discount?

nirvana33 [79]

12 percent

ignore this line my answer needs to be longer

4 0

3 years ago

From 1980 to 1990, the consumer price index (CPI) increased from 82.4 to 130.7. If a bottle of dish soap cost $0.74 in 1980 and

Wittaler [7]

Cost = $0.95*130.7/82.4 = $1.51

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3 years ago

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Pleasee help! Brainliest to correct

Ket [755]

Answer:

3.6

Step-by-step explanation:

I=k/d^2

360=k/3^2

k=360*9

k=3240

I=k/d^2

250=3240/d^2

250d^2=3240

d^2=3240/250

d=3.6

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3 years ago

Raymond spends 1/10 of his vacation budget on a car rental. Write an expression for how much he has to spend on the rest of his

ycow [4]

He spent $65 of his total $650 leaving him with $585.
650/10=65
650-65=585
or (650/10)-65=585
the / is the division symbol.

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3 years ago

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