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
icang [17]
2 years ago
9

What percent is of 30 is 40

Mathematics
2 answers:
pochemuha2 years ago
8 0
75% (sorry if it’s the wrong answer I’m dumb)
Hoochie [10]2 years ago
7 0

Answer:  

30/x=100/40

(30/x)*x=(100/40)*x       - you multiply both sides of the equation by x

30=2.5*x       - you divide both sides of the equation by (2.5) to get x

30/2.5=x  

12=x  

x=12

now we have:  

40% of 30=12

Step-by-step explanation:

You might be interested in
21 points!!
exis [7]

Answer:

Simple multiplication gets you 124

Step-by-step explanation:

9x13=117

117+7=124

Maya now has 124 cookies

9 reps bags, 13 reps cookies, 7 reps cookies already had.

3 0
2 years ago
Read 2 more answers
An exterior angle of a triangle is 140 degrees. If the non-adjacent angles are congruent, then what are the measures of all of t
trasher [3.6K]

The measures of all of the interior angles of the triangle are 70 degrees, 70 degrees and 40 degrees

<em><u>Solution:</u></em>

Given that exterior angle of triangle is 140 degrees

The exterior angle of a triangle is equal to the sum of the measures of the two non-adjacent interior angles

Given that adjacent angles are congruent

Let one of the non adjacent interior angles be "x"

x + x = 140

2x = 140

x = 70

So the two interior angles are 70 degrees and 70 degrees

Let us find the third interior angle

The angle sum property of a triangle states that the interior angles of a triangle always add up to 180 degrees

70 + 70 + third angle = 180

third angle = 180 - 70 - 70

third angle = 180 - 140

third angle = 40 degrees

Thus the measures of all of the interior angles of the triangle are 70 degrees, 70 degrees and 40 degrees

3 0
3 years ago
Please help ASAP this was due awhile ago and I’m about to get a zero
jok3333 [9.3K]

Answer:

2 cups of blueberry

Step-by-step explanation:

8/4=2

3 0
2 years ago
The half life of a certain tranquilizer in the bloodstream is 36 hours. How long will it take for the drug to decay to 87% of th
Fudgin [204]

<u>Finding the Decay constant(λ):</u>

λ = 0.693 / (half-life)

we are given that the half-life is 36 hours

λ = 0.693 / (36)

λ = 0.01925 /hour

<u>Time taken for 87% decay:</u>

Since decay is first-order, we will use the formula:

t = \frac{2.303}{decay constant}log(\frac{A_0}{A} )

Where A₀ is the initial amount and A is the final amount

Let the initial amount be 100 mg,

the final amount will be 87% of 100

Final amount = 100*87/100 = 87 mg

<em>Replacing the values in the equation: </em>

<em />t = \frac{2.303}{0.01925}log(\frac{100}{87} )<em />

<em />t = \frac{2.303}{0.01925}*0.06<em />

t = 7.18 hours

<em>We used 'hours' as the unit because the unit of the decay constant is '/hour'</em>

Therefore, the drug will decay to 87% of initial dosage after 7.18 hours

7 0
3 years ago
Plz help urgent question below
zhannawk [14.2K]
A is the answer. Hope this helps
6 0
3 years ago
Other questions:
  • the probability of drawing a red coin after three red coins are put back in the bag to replace the blue one that has been remove
    10·1 answer
  • Over the course of 4 days the price of stock at Acme corporation fell $28. What was the average change in stock price per day?
    8·1 answer
  • Similar Triangles, really need help on this one tried to do it but I don't understand it please help.
    9·1 answer
  • An employee earns a 12% commission rate on the cameras he sells. If he earns $384 in commission, what were his total sales?
    8·2 answers
  • Fern is choosing between two salary plans. The first salary plan is $100 with 15% commission for every sale he makes. The second
    12·1 answer
  • 1/3(z+4)-6=2/3(5-z) solve for z and check solution
    14·2 answers
  • Do f(x)and g(x) have the same y-intercept.
    13·1 answer
  • What is the number −37,860,000 written in scientific notation?
    8·1 answer
  • Simplify completely:<br><br> Show all work for full credit.
    10·1 answer
  • A card was selected at random from a standard deck of cards. The suit of the card was recorded, and then the card was put back i
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!