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4 years ago

Solve the inequality -8r<-12.

2 answers:

8 0

-8r<12
8r>12
Divide both sides by 8
r> 12/8
r> 3/2
r>1 1/2
r> 1.5

Any of the last 3 lines would be a correct answer, it just depends how you need to write it.

Hope this helps :)

Kobotan [32]4 years ago

6 0

Divide -8 from both sides to get the answer

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Find the quotient: 7/8 ÷ 3/8 A 21/64 B 3/7 C 2 1/3 D 7 1/3

pantera1 [17]

D

explanation:

7/8 x 8/3=56/24—simplify—-> 7/3

4 0

3 years ago

Solving Quadratic Functions

muminat

The answer will be none

6 0

3 years ago

12 gallons of gas to travel 144 miles. Six gallons in the tank how much more will she need to travel 240

ira [324]

Solution:
Here:
On 12 gallons of gas 144 miles is travelled.
So, for 1 mile :
$\frac{12}{144} \: gallons \: of \: gas$
$= \frac{1}{12} \: gallons \: of \: gas$
is required.
Now,
for 240 miles:
$\frac{1}{12} \times 240$
$= 20 \: gallons \: of \: gas$
is required.
But, according to question, the tank only contains 6 gallons of gas. So, see needs more (20 - 6) gallons of gas [i.e. 14 gallons of gas].

5 0

3 years ago

A boat can travel 23mph in still water. If it travels 248 miles with the current in the same length of time it travels 120 miles

mixas84 [53]

Answer: the speed of the current is 8 mph.

Step-by-step explanation:

Let represent the speed of the current

boat can travel 23mph in still water. This means that the total speed with which the boat travelled is (23 + x) mph.

Time = distance/speed

If it travels 248 miles with the current, it means that the time it took the boat to travel with the current is

248/(23 + x)

in the same length of time it travels 120 miles against the current. This means that the total speed with which the boat travelled is (23 - x) mph. The time it took the boat to travel against the current is

120/(23 - x)

Since the time is the same, it means that

248/(23 + x) = 120/(23 - x)

Cross multiplying, it becomes

248(23 - x) = 120(23 + x)

5704 - 248x = 2760 + 120x

120x + 248x = 5704 - 2760

368x = 2944

x = 2944/368

x = 8 mph

4 0

3 years ago

Find the equation of the line through point (10,4) and parallel to 3x+5y=8.

Gnom [1K]

Parallel = same slope
Find slope of 3x + 5y = 8
Turn into y = mx + b
5y = -3x + 8
Divide by 5
y = -3/5x + 8/5
Slope is -3/5
Y = -3/5x + b, find y intercept
Plug in the point
4 = -3/5(10) + b
4 = -6 + b, b = 10
Final equation: y = -3/5x + 10

8 0

3 years ago