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
Firdavs [7]
2 years ago
9

Lindsey completed a 30 point assignment. she eared 21 points what percent did she earn?

Mathematics
2 answers:
Virty [35]2 years ago
6 0

Answer:

She earned a seventy percent.

Step-by-step explanation:

You set the problem up like  21/30 = x/100.

Then, you cross multiply and you get 30x=2100.

From there, you divide each side by thirty and then you get x = 70.

And that brings you to 70 percent. Hope this helps!

lana66690 [7]2 years ago
4 0

Answer:

Lindsey got 70% on this assignment.

Step-by-step explanation:

21 divided by 30 equals 0.7 which is 70% in percent form.

You might be interested in
Solve each equation. Show your work<br><br> 13a=-5<br> 12−b=12.5<br> -0.1=-10c
amid [387]
1) 13a=-5
Make a the subject of the formula by dividing both sides by 13(the coefficient of a)
13a/13=-5/13
Therefore a= -0.385

The second one). 12-b= 12.5
You take the 12 to the other side making b subject of the formula (-b in this case)
-b= 12.5-12
-b= 0.5
(You cannot leave b with a negative sign so you will divide both sides by -1 to cancel out the negative sign)

-b/-1= 0.5/-1
Therefore b=-0.5

The third one). -0.1= -10c
You will divide both sides by the coefficient of c(number next to c) which is -10
-0.1/-10= -10c/-10

Hence, c= 0.01
5 0
3 years ago
A cone has a volume of 1,256 cubic centimeters. If the height of the cone is 12 centimeters, what is the radius of the base in c
luda_lava [24]

Answer:

The radius 10 cm

Step-by-step explanation:

∵ The volume of the cone = 1/3 πr²h

∵ v = 1256 cm³

∵ h = 12 cm

∴ 1256 = 1/3 π (12) r²

∴ r² = 1256 × 3/12π = 100 cm

∴ r = √100 = 10 cm

5 0
2 years ago
Evaluate the expression 3.14(a2 + ab) when a = 3 and b = 4. (Input decimals only, such as 12.71, as the answer.)
soldier1979 [14.2K]
A= 3
b= 4

=3.14(a^2 + ab)
substitute the given a & b values in expression

=3.14((3)^2 + (3*4))
multiply inside parentheses

=3.14(9 + 12)
add inside parentheses

=3.14(21)
multiply

=65.94


ANSWER: 65.94

Hope this helps! :)
8 0
3 years ago
A medical lab is testing a drug that removes a certain percent of fluid from the lungs of a patient every eight hours. The expre
KatRina [158]

D.the number of times the drug has removed a certain percentage of fluid from the patient's lungs
8 0
3 years ago
Read 2 more answers
Please help! Thank you :) also don't spam for points I know a moderator
dybincka [34]

Answer:

1) True

2) False

3) True

4) True

5) False

4 0
2 years ago
Other questions:
  • You think you’ve sprained your ankel
    8·1 answer
  • Choose all items which are true.
    8·1 answer
  • Solve 20x5y=15 for y​
    6·1 answer
  • 1.Solve : 3(5 + 7) - 4(8 + 4) = * 2.solve:-7 x -10 ill give you an free robux account if you get them correct
    9·1 answer
  • 570 times what gets 690
    5·2 answers
  • Solve the following problems. Draw a picture and write the number sentence that proves the answer. Simplify your answer if possi
    6·1 answer
  • Suppose you have 3 bags. Two of them contain a single $10 bill, and the third contains a single $5 bill. Suppose you pick one of
    14·1 answer
  • 1A) Quad ABCD is inscribed in the circle. Find x. *
    5·1 answer
  • If 12+ blank=0+12, than blank must equal
    14·2 answers
  • Determine if the sides are greater than (&gt;), less than (&lt;), or equal (=) to each other.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!