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
kozerog [31]
3 years ago
7

On the checkerboard, 4/10 of the pieces left are red. What fraction of the pieces left are black? Write the equation.​

Mathematics
1 answer:
Alexeev081 [22]3 years ago
8 0

Answer:

The fraction of black pieces left is \frac{6}{10}

Step-by-step explanation:

Given as :

On the checkerboard , The fraction of red pieces left = \frac{4}{10}

Let The fraction of black pieces left                              = x

So, The fraction of black pieces left = x = 1 - \frac{4}{10}

Or,                                                          x = \frac{10-4}{10}

Or,                                                          x = \frac{6}{10}

Hence The fraction of black pieces left is \frac{6}{10}  Answer

You might be interested in
Hamish and Harry work as plumbers. Harry earns a dollar more than the amount Hamish earns per hour. The amount Harry earns per h
natulia [17]

Answer:

Hamish and Harry work as plumbers. Harry earns a dollar an hour more than 5/4 the amount hamish earns per hour. harry earns per hour is 2$ less than 7/5 the amount hamish earns per hour. how much do each of them make an hour

Step-by-step explanation:

Let

x is the  amount Harry earns 

y is the amount Hamish earns 

x=(5/4)y+1 ⇒ (x-1)*4/5 = y-------- equation 1

x=(7/5)y-2⇒ (x+2)*5/7 = y-------- equation 2

equals 1 and 2

(x-1)*4/5 = (x+2)*5/7

(4x-4)/5 = (5x+10)/7

(4x-4)*7 = (5x+10)*5

28x-28 = 25x+50

28x-25x = 50+28

3x = 78

x = 26

substitute x = 26 for y=(x-1)*4/5

y = (x-1)*4/5

y =  (26-1)*4/5

y = 20

the answer is

<h3>Harry earns $26 an hour</h3><h3>Hamish earns  $20 an hour</h3>
7 0
3 years ago
Read 2 more answers
A machine covers 5/8 square foot in 1/4 hour. what is the unit rate?
Ilia_Sergeevich [38]

we know that

<u>Unit Rate</u> is the ratio of two measurements in which the second term is one

so

to find the unit rate divide (5/8) by (1/4)

Unit\ rate=\frac{(5/8)}{(1/4)}= \frac{5}{8}*4= \frac{2.5}{1} =2.5 \frac{ft^{2}}{hour}

therefore

<u>the answer is</u>

The unit rate is 2.5 \frac{ft^{2}}{hour}

4 0
3 years ago
Indicate which sets are disjoint to the given set
marysya [2.9K]

If the intersection of two sets is a null set or an empty set, then two sets A and B are disjoint sets. The intersection of a set is therefore empty.

<h3>Explain about the disjoined set?</h3>

Disjoint sets are a pair of sets that do not share any elements. For instance, the sets A=2,3 and B=4,5 are not connected sets. However, set C=3,4,5 and set C=3,6,7 are not disjoint since 3 is a common element in both sets C and D.

Now that we are clear on the disjoint set's definition, let's go on to talking about some more important topics, such the notation and Venn diagram related to it. A B = is the notation used for this particular set. As an illustration, suppose A = 1, 2, 3, and B = 4, 5, 6, 7. A + B = then.

To learn more about disjoined set refer to:

brainly.com/question/28165517

#SPJ1

8 0
1 year ago
Please help ASAP!<br><br> what is x=-b/2a?
valina [46]

This is the formula to solve for the vertex.

Example Question:

Find the vertex of y = -0.5x^2 + 100x

-b/2a = -100/2(-0.5) = -100/-1 = 100

The x coordinate of the vertex is 100.

Best of Luck!

P.S. this is 1000th question i've answered :)

5 0
3 years ago
Gary learned that the value of his car depreciates by 15% percent per year. Which of the following functions best describes the
Sever21 [200]
For this case we have that the original value of the car is:
 m dollars
 For the following year we have the value is:
 ((100-15) / (100)) m
 Rewriting we have:
 ((85) / (100)) m
 0.85m
 Answer:
 
the value of his car the year after the car is worth m dollars is:
 
B.f (m) = 0.85m
5 0
2 years ago
Other questions:
  • What can you multiply to get 16 but add to get 10
    13·1 answer
  • What will be <br> 50% of 42
    8·2 answers
  • How many yards are in 144 inches​
    11·2 answers
  • Jack, Davis, Faiza, and Marry want to take a picture together. In how many ways can they are arranged?
    6·1 answer
  • Marissa spent a total of 240 minutes exercising last week. How many minutes did she spend walking ? If she walked 45%
    11·1 answer
  • Does the function satisfy the hypotheses of the Mean Value Theorem on the given interval? f(x) = 3x2 − 4x + 1, [0, 2] Yes, it do
    9·1 answer
  • 10 increased by the<br>quotient of a number<br>and 2 is 13.​
    8·1 answer
  • 8. [15 + (5 - 2)^2] ÷ 6 = <br><br>9. 4^3 + [7 - 2 ( 3 1/4)] - 9.2 = <br><br>​
    7·2 answers
  • The length of a rectangle is 2cm less than twice the width. If y represents the width, state the inequality that the area of a r
    6·2 answers
  • A box of tangerines that weighs 5 pounds costs $4.25.<br> What is the cost per pound?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!