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
Svet_ta [14]
3 years ago
5

81% of___ is 405 Pls help

Mathematics
2 answers:
inna [77]3 years ago
7 0

Answer:

500 x 81% = 405

Step-by-step explanation:

motikmotik3 years ago
3 0
Of means multiplication and Is means equals. So 0.81x =405
X = 500
You might be interested in
1. Solve for y 4x + 2y = 6<br>​
xenn [34]

Answer:

y = -2x + 3

Step-by-step explanation:

4x + 2y = 6

⇔ 2y = \frac{6 - 4x}{2} = \frac{6}{2} - \frac{4x}{2} = 3 - 2x = -2x + 3

5 0
3 years ago
A landscape business charges $50 to deliver rocks. The cost of the rocks are $27 per cubic yard. write and solve a linear equati
Nuetrik [128]
<h2>Answer: 27x + 50 = y, $266</h2>

Step-by-step explanation:

First, let's form a linear equation that will help us find out how much that will cost.

Let's set x = the cubic yards of rocks delivered and y = total cost.

First, we know that the business charges 27 dollars for every x that you buy. That can be shown with a multiplication expression:

27x

Next, we know that the business charges a fixed fee of $50 for their services. This fee would be <em>added on</em> to the amount that they charge for the rocks that you buy.

<h2>27x + 50 = y</h2>

That's our linear expression! Next, we need to find out the <em>total cost</em>, y, when you need 8 cubic yards of rocks delivered, x.

To solve this, we need to substitute values for at least one of our variables.

Since 8 describes the cubic yards of rocks delivered, we can substitute 8 for x.

But we don't know y, the total cost- that's what we're solving for! In other words, we're solving for y.

Let's just substitute in what we know:

27(8) + 50 = y.

216 + 50 = y

<h2>y = 266</h2>

So, we know that it would cost $266 dollars to have 8 cubic yards of rocks delivered to a site.

By the way, you can also graph your linear equation to find the corresponding y-value to 8 as another way to solve your problem.

7 0
3 years ago
This recipe will serve 12 pancakes.
lina2011 [118]

Answer:

for 24 pancakes, double the ingredients and for 6 pancakes divide the ingredients' by 2

6 0
3 years ago
3(32 − 4 + 6 )− (82 + + 3) ?<br> simpilyfy<br> plzz
IrinaVladis [17]

Answer:

17 is your answer

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Suppose that the mean score of a class of 32 students was 74. the 19 male students in the class had a mean score of 70. what was
andrew-mc [135]
Mean = sum of values / number of values
74 = x/32
2368 = x

70 = y/19
1330 = y

mean for female students = (2368 - 1330)/(32-19) = 79.85
5 0
3 years ago
Other questions:
  • Write and solve a proportion to<br> answer the question.<br> What number is 120% of 80?
    5·1 answer
  • PLEASE ANSWET ASAP! -Brainlist to right answer
    7·2 answers
  • Find the perimeter of a triangle with sides measuring 3 centimeters 4 centimeters and 5 centimeters
    9·1 answer
  • 34.5% change into a decimal
    9·1 answer
  • The scale on the map says that 1.5 cm represents 40 miles. On the map the measurement between Nashville, TN and Atlanta, GA is 1
    8·1 answer
  • Use the quadratic formula to solve 2x^2 -1 = 7x, and then verify your answer by graphing​
    10·2 answers
  • Find an equation for a line that passes through points -4,3 and 6,5
    8·2 answers
  • Sammy finds satellite images of a school and a museum. They put the images on a coordinate grid (shown
    7·2 answers
  • Someone plz help me
    12·2 answers
  • Find the solutions of the quadratic equation - 2^2+ 3x – 3 = 0
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!