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
givi [52]
3 years ago
5

78 is 15% of what number? Solve using an equation. Show your work.

Mathematics
1 answer:
Phoenix [80]3 years ago
4 0

Answer:

  520

Step-by-step explanation:

  78 = 15% × (what number)

  78/0.15 = (what number) = 520

78 is 15% of 520.

You might be interested in
18x^2+21x-9 I need to figure out how to work this problem
shtirl [24]
18x^2+21x-9=3(6x^2)+3(7x)-3(3)\\\\=3(6x^2+7x-3)=3(6x^2+9x-2x-3)\\\\=3[3x(2x)+3x(3)-1(2x)-1(3)]\\\\=3[3x(2x+3)-1(2x+3)]\\\\=\boxed{3(2x+3)(3x-1)}
3 0
3 years ago
Read 2 more answers
2y – 9x = 4<br><br> ......................
alekssr [168]

Answer:

y=9/2x+2

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
What is the formula for the area of a triangle?
SashulF [63]

<em>The</em><em> </em><em>formula</em><em> </em><em>to</em><em> </em><em>find</em><em> </em><em>the</em><em> </em><em>area</em><em> </em><em>of</em><em> </em><em>a</em><em> </em><em>triangle</em><em> </em><em>is</em><em> </em><em>:</em>

<em>1</em><em>/</em><em>2</em><em> </em><em>base</em><em>*</em><em>height</em>

<em>For</em><em> </em><em>inst</em><em>ance</em><em>:</em>

<em>base</em><em>=</em><em>4</em><em> </em><em>cm</em>

<em>height</em><em>=</em><em>5</em><em>c</em><em>m</em>

<em>area</em><em> </em><em>of</em><em> </em><em>traingle</em><em>=</em><em>1</em><em>/</em><em>2</em><em>*</em><em>b</em><em>*</em><em>h</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>=</em><em>1</em><em>/</em><em>2</em><em>*</em><em>4</em><em>*</em><em>5</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>=</em><em>1</em><em>0</em><em>c</em><em>m</em><em>^</em><em>2</em>

<em>Hope</em><em> </em><em>it</em><em> </em><em>helps</em><em>.</em><em>.</em><em>.</em>

<em>Good</em><em> </em><em>luck</em><em> </em><em>on</em><em> </em><em>your</em><em> </em><em>assignment</em>

6 0
3 years ago
What is measurement ​
tresset_1 [31]

Answer:

Measurement is a comparison of an unknown quantity with a known fixed quantity of the same kind.

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
There are some Nichols dimes and quarters in a large piggy bank for every two nickels there a sweetheart forever to Diane’s ther
grigory [225]

Answer:

There are 80 nickels, 120 dimes and 300 quarters in the piggy bank.

All coins in the piggy bank worth $91.

Step-by-step explanation:

Please consider the complete question:

There are some nickels, dimes, and quarters in a large piggy bank. For every 2 nickels there are 3 dimes. For every 2 dimes there are 5 quarters. There are 500 coins total. How many nickels, dimes, and quarters are in the piggy bank? Explain your reasoning. How much are the coins in the piggy bank worth?

Let n, d, q represent number of nickles, dimes and quarters respectively.

For every 2 nickels there are 3 dimes. We can represent this information in an equation as:

\frac{2}{n}=\frac{3}{d}...(1) or

n=\frac{2d}{3}...(1)

For every 2 dimes there are 5 quarters. We can represent this information in an equation as:

\frac{2}{d}=\frac{5}{q}...(2) or  

q=\frac{5d}{2}...(2)  

There are 500 coins total. We can represent this information in an equation as:

n+d+q=500...(3)

We will use substitution method to solve our given system.

Upon substituting equation (1) and equation (2) in equation (3), we will get:

\frac{2d}{3}+d+\frac{5d}{2}=500  

Multiply the equation by 6:

\frac{2d}{3}*6+d*6+\frac{5d}{2}*6=500*6  

2d*2+6d+5d*3=3000  

4d+6d+15d=3000  

25d=3000  

\frac{25d}{25}=\frac{3000}{25}  

d=120  

Therefore, there are 120 dimes in the piggy bank.

Upon substituting d=120 in equation (1), we will get:

n=\frac{2(120)}{3}

n=2(40)

n=80

Therefore, there are 80 nickels in the piggy bank.

Upon substituting d=120 in equation (2), we will get:

q=\frac{5d}{2}  

q=\frac{5(120)}{2}  

q=5(60)  

q=300  

Therefore, there are 300 quarters in the piggy bank.

Now, we need to find the value of all coins.

We know 1 quarter is worth $0.25, so 300 quarters will be worth \$0.25\times 300=\$75.

We know 1 dime is worth $0.10, so 120 dimes will be worth \$0.10\times 120=\$12.

We know 1 nickel is worth $0.05, so 80 nickels will be worth \$0.05\times 80=\$4.

\text{All coins worth}=\$75+\$12+\$4

\text{All coins worth}=\$91

Therefore, all coins in the piggy bank worth $91.

7 0
3 years ago
Other questions:
  • Please help me! thank you :)
    13·1 answer
  • for the spring fundraiser, there were 50 committee members. Each member worked 2 hour. The eveent raised $ 1,267.00. What amount
    15·1 answer
  • The ratio of the angles in a triangle is 2:3:5. Find the measure of each angle. Measurements are all in degrees.
    13·1 answer
  • Tell whether the three-dimensional object has rotational symmetry about a line and/or reflectional symmetry in a plane.
    7·2 answers
  • a line crosses the y-axis at the point (0, 3) and passes through the point (4, 5). Which of the following is an equation of the
    14·1 answer
  • 2. Hal forgot the number of people at the
    7·2 answers
  • If x = 4, y = 2, and z = 10, evaluate the following expression: yz(x + y) – x? Enter​
    14·2 answers
  • A small tree is beginning to lean. The owner decides to set up a tension wire to straighten the tree’s growth. The owner chooses
    9·1 answer
  • Help is very much appreciated!
    8·2 answers
  • What is the simplified expression for-<br> HURRY PLEASE
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!