2 years ago

Solve the system of equations and choose the correct answer from the list of options. (4 points) x − y = 7 y = 3x + 12

1 answer:

8 0

X = -19/2
y = -33/2

Start by plugging in the second equation for y in the first equation. Then solve for x. After you can use that value to solve for y.

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HELP PLEASE ITS DUE TODAY!!! Express 14 hours in 2 weeks as a unit rate

user100 [1]

Answer:

14/336 ----------> 0.41

Step-by-step explanation:

you substituto 2 week to 336 cause there are 336 hours in 2 weeks therefore 14/336 = 0.41

the unit rate is 14/336

7 0

2 years ago

At cheng’s bike rental cost $40 to rent a bike for seven hours how many dollars does it cost per hour of bike use

Alchen [17]

40$. 7hrs
X$. 1hr
X=40•1/7
X~5.71 $ per hour

3 0

2 years ago

Hallie bikes 1 5/8 km before lunch and 6 1/4 km after lunch. How much farther does Hallie bike after lunch than before lunch? Ex

EleoNora [17]

Answer:

4 $\frac{5}{8}$ km

Step-by-step explanation:

To find how much farther Hallie biked after lunch compared to the amount she biked before lunch, we can subtract the amounts:

6 $\frac{1}{4}-1\frac{5}{8}$

However, we can only subtract fractions that have the same denominator, so we need to convert $\frac{1}{4}$ to a fraction with a denominator of 8:

$\frac{1}{4}=\frac{2}{8}$

Now, we can't subtract 2 from 8, so we need to 'borrow' from the 6 to make the fraction larger:

$6\frac{2}{8}=5\frac{10}{8}$

Now subtract: $5\frac{10}{8}-1\frac{5}{8}=4\frac{5}{8}$

4 0

3 years ago

Please answer this as soon as possible.

Vlad [161]

I’m pretty sure it’s b

7 0

2 years ago

Evaluate the expression 10^2+(3+5)^2 - 5=

vampirchik [111]

Answer:

159

Step-by-step explanation:

10^2+(3+5)^2-5

-> 100 + (3+5)^2 -5

-> 100 + 8^2 - 5

-> 100 + 64 - 5

-> 159

8 0

2 years ago

Read 2 more answers