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3 years ago

WILL GIVE BRAINLIEST FOR A CORRECT ANSWER:

Mathematics

2 answers:

guapka [62]3 years ago

7 0

Answer:

Solution:

the boat's speed in still water: x

The speed with current: (x+3)

The speed against current: (x-3)

The equation is

3(x+3) = 4(x-3)

x = 21 mph

The distance = 3*(21+3)= 72 miles

I choose (A)

Step-by-step explanation:

dlinn [17]3 years ago

3 0

Answer:

72 Miles

Step-by-step explanation:

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Answer:

1:4

Step-by-step explanation:

3:12

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(would love if you could mark me the brainliest :))

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Distribute and simply 7-2(x-5)+3x

KonstantinChe [14]

The given expression is

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1 year ago

50 POINTS FIRST GOOD ANSWER GETS BRAINLIEST

Inessa [10]

Answer:

$f(x)=3+|2x-5|=\left\{ \begin{array}{ll} 2x-2& \quad x \geq 5/2 \\ -2x+8 & \quad x < 5/2 \end{array} \right.$

Step-by-step explanation:

We are given the function:

$f(x)=3+|2x-5|$

Remember that by the definition of absolute value:

$\displaystyle |x|= \left\{ \begin{array}{ll} x & \quad x \geq 0 \\ - x & \quad x < 0 \end{array} \right.$

Our absolute value is:

$|2x-5|$

First, we will find when it becomes 0. Set the equation equal to 0:

$2x-5=0$

Solve for x:

$x=5/2$

So, we can see that for all values greater than x = 5/2, 2x - 5 is positive.

For all values less than x = 5/2, 2x - 5 is negative.

Therefore (the positive case go above, and the negative case go below):

$|2x-5|= \left\{ \begin{array}{ll} 2x-5 & \quad x \geq 5/2 \\ -(2x-5) & \quad x < 5/2 \end{array} \right.$

Finally, we can add a three:

$f(x)=3+|2x-5|=\left\{ \begin{array}{ll} 3+(2x-5) & \quad x \geq 5/2 \\ 3+(-(2x-5)) & \quad x < 5/2 \end{array} \right.$

Simplify if desired:

$f(x)=3+|2x-5|=\left\{ \begin{array}{ll} 2x-2& \quad x \geq 5/2 \\ -2x+8 & \quad x < 5/2 \end{array} \right.$

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2 years ago

ASAP+BRAINLYYYY! Thanks!

makkiz [27]

Answer:

Option C

Step-by-step explanation:

We would have the find the diet that are not Acadia leaves. Since the giraffes eat 75 pounds per day, we can simply subtract the quantity of the Acadia leaves from the 75 to get the amount for the other leaves.

You can also use the equation given in the question to check your answer if you use Option C's equation.

Option C should be the correct answer.

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3 years ago

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