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
Varvara68 [4.7K]
3 years ago
12

a boat going upstream at 4 mph then travels downstream at 10 mph. what is the rate of the boat in still water​

Mathematics
1 answer:
elixir [45]3 years ago
7 0

Answer:

7 mph

Step-by-step explanation:

If b is the rate of the boat, and s is the rate of the stream, then:

b − s = 4

b + s = 10

Solve the system of equations with substitution or elimination.  Using elimination, add the equations together:

2b = 14

b = 7

The boat's rate is 7 mph.

You might be interested in
Find probabilities using combinations and permutations. Tyler was feeling particularly adventurous at the hair salon one day, an
Blizzard [7]

There are total of 10 colors to choose.

6 are shades of purple and

4 are not shades of purple.

Tyler selects 5 colors, and exactly 2 are shades of purple. Therefore, the 3 other colors are not shades of purple.

7 0
1 year ago
What is the quotient?
AlexFokin [52]

Answer:

3/2

Step-by-step explanation:

● (-3/8) ÷(-1/4)

Flip the second fraction by putting 1 instead 4 and vice versa.

● (-3/8)* (-4/1)

-4 over 1 is -4 since dividing by 1 gives the same number.

● (-3/8)*(-4)

Eliminate the - signs in both fractions since multiplying two negative numbers by each other gives a positive number.

●( 3/8)*4

● (3*4/8)

8 is 2 times 4

● (3*4)/(4*2)

Simplify by eliminating 4 in the fraction.

● 3/2

The result is 3/2

7 0
3 years ago
Quadrilateral ABCD is similiar to quadrilateral EFGH. The lengths of the three longest sides in quadrilateral ABCD are 24 feet,
MatroZZZ [7]

The two quadrilaterals are given similar .

In any similar figure sides are in proportion.The second largest side of quadrilateral ABCD is 16 ft .Let the second longest side of quadrilateral EFGH be x ft. These sides will be in proportion to each other .

The second shortest side of quadrilateral EFGH that is GF will be proportional to the third longest side of quadrilateral ABCD that is BC

We can form a proportion with the proportional sides:

\frac{16}{x} =\frac{12}{18}

To solve for x we cross multiply

12x=(16)(18)

12x=288

Dividing both sides by 12 we get

x=24.

The second longest side of quadrilateral EFGH is 24 ft.

6 0
4 years ago
Bob is trying to decide between two cell phone plans. Plan A has no flat fee, but the user must pay $10 cents per minute on the
professor190 [17]
$ per min is a rate. you multiple by minutes to get dollars.

A = 10x
B = 5x + 20

set them equal to find minutes, x.

10x = 5x + 20
10x - 5x = 20
5x = 20

x = 4
4 0
3 years ago
Read 2 more answers
Can bbn I please have help ​
Sveta_85 [38]

Answer:

question 9

= –12

while question 11=, x= –72

Step-by-step explanation:

question 9=

u= –16+4= –12

question 11=

cross multiplication

x = -36 multiplied by 2 =

-72

I HOPE THIS HELPED IF WRONG IM SORRY

3 0
3 years ago
Other questions:
  • How do you solve this problem <br><br> 5(x-3)+7=5x-8
    15·1 answer
  • Triangles A B C and X Y Z are shown. The length of side A B is 6 and the length of side B C is 5. The length of side X Y is 1.5,
    14·2 answers
  • What do you simplify 5/54
    11·1 answer
  • Which equation is correctly rewritten to solve for y?
    6·1 answer
  • Andrew needs copies of a flyer for his band concert. The copy store prints 15 copies for $1.06. At that rate, how much will Andr
    9·2 answers
  • Please help!!! I seriously need this. Comment below if you know. 15 points!!
    13·1 answer
  • Cos2A + cos2A cot2A = cot2A​
    15·1 answer
  • What expression is equivalent to ^3 square root of 2y^3 times 7 square root of 18y
    15·1 answer
  • g A rotating light is placed 3 meters from a wall. Let W be the point on the wall that is closest to the light. Suppose the ligh
    11·1 answer
  • They want the volume of the family-sized box to be three times the volume of the regular-sized box. However, they want the lengt
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!