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3 years ago

What is the answer I need help please

Mathematics

2 answers:

madam [21]3 years ago

5 0

7 walks and a ticket

I'm from Mexico

amm18123 years ago

3 0

Answer:

7 rides

Step-by-step explanation:

38 - 10 (entrance fee) = $28 to spend on rides

if it's $4 per ride, we can divide the remaining money ($28) by the cost of each ride ($4)

28 / 4 = 7

Therefore, she can ride 7 rides

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URGENT. Find f(3) if<br> f(x)=x^3 + 2x^2-x-1

KonstantinChe [14]

Answer:

Step-by-step explanation:

Jus replace x with 3 and put it in a calculator.

6 0

3 years ago

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Find the value of x in each case:

quester [9]

X + 100 = 4x +49
x= 17

158+148+32+x = 360
338+x= 360
x= 22

5 0

3 years ago

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Invest 5000 for 5 years at 5% interest rate

yulyashka [42]

Answer:

$6,250

Step-by-step explanation:

5% of 5000 = .05 x 5000 = 250 this finds the amount gained per year

250 x 5 = 1,250 this is the amount earned over 5 years

5000 + 1250 = 6,250 this is the total after 5 years.

Hope this helps!

3 0

3 years ago

Help fastt!!

fomenos

Answer:

Area of triangle = 20 square yards

Step-by-step explanation:

The height of triangle = 5 yd

The base of triangle = 8 yd

We need to find area of triangle.

The formula used is: $Area\: of\: triangle=\frac{1}{2}\times base \times height$

Putting values and finding area

$Area\: of\: triangle=\frac{1}{2}\times base \times height\\Area\: of\: triangle=\frac{1}{2}\times 8 \times 5\\Area\: of\: triangle=4 \times 5\\Area\: of\: triangle=20\:square\:yards$

So, Area of triangle = 20 square yards

5 0

3 years ago

a motorboat takes 5 hours to travel 150 Miles going Upstream. the return trip takes 3 hours going Downstream .what is the rate o

lord [1]

Answer:

Speed of boat in still water = 40 mph

Rate of current = 10 mph

Step-by-step explanation:

Let the speed of boat in still water be x & let the speed of the stream be y.

Total Distance = 150 miles

Time taken to travel during upstream = 5 hrs

Speed of the boat during upstream = $\frac{150}{5} = 30\:mph$

Speed of boat during upstream can be represented as $x - y = 30$ because the boat is moving in the opposite direction of flow of stream.

Time taken to travel during downstream = 3 hrs

Speed of boat during downstream = $\frac{150}{3} = 50\:mph$

Speed of boat during downstream can be represented as $x+y=50$ because the boat is moving in the same direction of flow of stream.

We got a pair of linear eqns. Let $x-y=30$ be eqn.1 and $x+y=50$ be eqn.2 . Using substitution method ,

From eqn.1 , $x-y=30$

$=> x = y + 30$

Putting 'x' in eqn.2 , $x + y = 50$

$=> y + 30 + y = 50$

$=> y + y = 50-30$

$=> 2y = 20$

$=> y = \frac{20}{2} = 10\: mph$

Putting y in eqn.1 ,

$x - 10 = 30$

$=> x = 30 + 10 = 40 \:mph$

Hence , the speed of boat in still water is 40 mph and speed of stream is 10 mph

4 0

3 years ago