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
vlada-n [284]
3 years ago
7

A teacher needs 70 lengths of string cut to 40cm each. If balls of string are 10 m long, how many balls will be needed.

Mathematics
1 answer:
Genrish500 [490]3 years ago
5 0

Answer:

3

Step-by-step explanation:

A ball is 10 meters. Since 100 centimeters are in a meter, each ball has 100*10 = 1000 centimeters.

The teacher needs 70 strings each 40 centimeters. The total amount they need is 70*40 = 2800 centimeters.

Since a ball has 1000 centimeters, 2800 centimeters will need 3 balls for a total of 3000 centimeters.

You might be interested in
If 64x=82, what is the value of x?<br> Round your answer to three places.
labwork [276]

Answer:

1.28

Step-by-step explanation:

First, you need to do 82/64, which will give you just x. Then, you need to round to three places. Without rounding it would be 1.28125

So with rounding it would be 1.28. Hope this helps and Happy learning!

3 0
2 years ago
If AB = 12 and CB = 10, then the height of the triangle is:
Ierofanga [76]
AD = DB = AB/2 = 6
cd = \sqrt{{bc}^{2} - {db}^{2} } \\ cd = \sqrt{64} \\ cd = 8
3 0
2 years ago
Need help with question 7 and 8 with awnser please check photo for problems
Tanzania [10]

Answer:

7) 230mm

8) 98m

Step-by-step explanation:

7)

7x+8+6x+6+9x-4 =22x+10

if x is 10 mm, 22(10)+10 =230mm

8) perimeter of rec =2( l + w )

=2 ( 2x-5+2x+6 ) = 8x + 2

if x  is 12 metres, 8(12)+2 =98m

7 0
2 years ago
A blue bag has 2 times as many marbles as a red bag. The blue bag has 6 marbles.
avanturin [10]

Answer:

3

Step-by-step explanation:

5 0
3 years ago
Write each fraction as a sum or difference
vekshin1

a)\\\dfrac{17+5n}{4}=\dfrac{17}{4}+\dfrac{5}{4}n\\\\b)\\\dfrac{8-9x}{3}=\dfrac{8}{3}-\dfrac{9}{3}x=\dfrac{8}{3}-3x\\\\c)\\\dfrac{4y-12}{2}=\dfrac{4}{2}y-\dfrac{12}{2}=2y-6\\\\d)\\\dfrac{25-8t}{5}=\dfrac{25}{5}-\dfrac{8}{5}t=5-\dfrac{8}{5}t\\\\e)\\\dfrac{18x+51}{17}=\dfrac{18}{17}x+\dfrac{51}{17}=\dfrac{18}{17}x+3

5 0
3 years ago
Other questions:
  • f(x) = 20(1.5)x. Let your dependent variable in the function be y. Write the function that models the independent variable in te
    11·1 answer
  • I need 11 through 14
    14·1 answer
  • A recipe for making 3 dozen muffins requires 1.5 cups of flour. At this rate, how many cups of flour are required to make 5 doze
    14·1 answer
  • Emily sold 99 boxes of cookies for a fundraiser. If she sold 60% of the total boxes of cookies sold for the fundraiser, how many
    5·1 answer
  • A savings account balance can be modeled by the graph of the linear function shown on the grid. What is the rate of change of th
    15·1 answer
  • I’ll give you a brain list !
    8·1 answer
  • Simplify please .....,
    15·1 answer
  • Can I get some help a good amount of points
    5·2 answers
  • Find x in the diagram below. T 1 35.4° 20.2° 252​
    11·1 answer
  • What is the inverse of (x^2 4)
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!