1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
GenaCL600 [577]
2 years ago
5

Bill wanted to try out different water craft he went 62 mikes downstream in a motor boat and 27 mikes down stream on a jest ski

his speed on the jet ski was 10 mph faster than the motor boat bill spent a total of 4 hours on the water what was his speed in the motor boat
Mathematics
1 answer:
valina [46]2 years ago
3 0

Answer:

The speed on motorboat is 20 mph

Step-by-step explanation:

here, we want to find the speed on the motorboat

if he has a speed of x mph on the motor boat, his speed on the ski will be (x + 10) mph

The total hours is 4 hours

Mathematically; speed = distance/time

Time on ski is 27/x+ 10

Time on motor boat is 62/x

The addition of both is 4

Thus;

27/(x + 10) + 62/x = 4

27(x) + 62(x + 10) = 4(x)(x + 10)

27x + 62x + 620 = 4(x^2 + 10x)

89x + 620 = 4x^2 + 40x

4x^2 -49x-620 = 0

using the quadratic formula;

{-b ± √(b^2-4ac)}/2a

where a = 4, b = -49 and c = -620

= 49 ± √(-49)^2-4(4)(-620)/8

So we have

49+ 111/8 or 49-111/8

Speed cannot be negative

(49 + 111)/8

= 20 mph

You might be interested in
What's the volume of this rectangular prism?
Snowcat [4.5K]

1. Find the length, width, and height of the rectangular prism.
2. Multiply the length, width, and height.
3. Write the answer in cubic units. For example: 60 inches3.

The length is the longest side of the flat surface of the rectangle on the top or bottom of the rectangular prism.

Ex: Length = 5 in.

<span>The width is the shorter side of the flat surface of the rectangle on the top or bottom of the rectangular prism. <span>Ex: Width = 4 in.The height is the part of the rectangular prism that rises up. Imagine that the height is what stretches up a flat rectangle until it becomes a three-dimensional shape. <span>Ex: Height = 3 in.You can multiply them in any order to get the same different result. The formula for finding the volume of a rectangular prism is the following: Volume = Length * Height * Width, or V = L * H * W. <span>Ex: V = 5 in. * 4 in. * 3 in. = 60 in.Since you're calculating volume, you're working in a three-dimensional space. Just take your answer and state it in cubic units. Whether you're working in feet, inches, or centimeters, you should state your answer in cubic units. <span>60 will become 60 in3.</span></span></span></span><span><span><span><span>
</span></span></span></span></span>


5 0
3 years ago
Read 2 more answers
A punch recipe for 24 people uses 4 liters of Soda, 2 pints of sherbet, and 6 cups of Ice.
FinnZ [79.3K]
3 liters of soda
1.5 pints of sherbet
4.5 cups of ice
6 0
3 years ago
describe how the location of the vertex of the angle determines the process of finding the angle measures associated with that a
LekaFEV [45]

Answer:

k

Step-by-step explanation:

3 0
3 years ago
HELP MATH WHIZZES!! TON OF FREE POINTS, EASY GEOMETRY QUESTION FOR THE RIGHT ANSWER! WHO WILL WIN THIS?! NEED HELP, NOT WRONG AN
Radda [10]
The area of the trapezoid is the product of the height and the average of the two bases: 
<span>30 (25 + 33)/2 = 30 (58)/2 = 30 (29) = 870 square yd. </span>

<span>But we want to exclude the area of the fountain. </span>
<span>Since it's circular its area is π times the square of its radius, or 16π square yd. </span>

<span>So the area of the park, excluding the fountain, is </span>
<span>870 - 16π square yd, </span>
<span>or about 820 square yd.</span>
5 0
3 years ago
Read 2 more answers
PLS HELP WILL MARK YOU BRAINLIEST! NO FAKE ANSWERS
bixtya [17]

Answer:

30%

Step-by-step explanation:

the first solution -30% will be 45% and the second solution added by 30% will be 45%

4 0
2 years ago
Read 2 more answers
Other questions:
  • Simplify the expression. (t −2)6
    10·1 answer
  • Can someone help me?! i’m stuck between two.
    8·1 answer
  • What is the meaning of the expression (94+33)-3
    12·1 answer
  • What is the x and y intercept of 2/5x + 1/2y = 20​
    5·1 answer
  • Use the drawing tools to graph this system of inequalities. Remember that isolating y is a helpful first step before graphing ea
    8·2 answers
  • THIS IS WORTH 40 POINTS
    13·2 answers
  • Which expression is equivalent to (8x - 1) (4x + 3) ?
    11·1 answer
  • Which is the equation of a line that passes through (1,8) and (6,4)
    12·1 answer
  • 1. Suppose that cos B = 0.68. What is the value of sin(a)? Explain.
    14·1 answer
  • What is the perimeter of triangle ABC? Round the answer to the nearest tenth, if necessary.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!