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Lunna [17]
3 years ago
15

How many four-digit numbers are there that the sum of the digits is 8?

SAT
1 answer:
elena-s [515]3 years ago
8 0

Answer:

the answer to this question is 120

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A. $100 is the correct answer.

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Imagine you are a systematist who has discovered an unfamiliar animal. Which of the following observations about the animal will
Furkat [3]

An observation about this animal that will help you to find its taxonomic classification is if: the animal has sharp, pointed teeth.

<h3>What is taxonomy?</h3>

Taxonomy can be defined as a scientific method or technique that is typically used for naming, classification and description of the various species of organisms such as animals, humans, and plants.

<h3>The characteristics of taxonomic classification.</h3>

Basically, organisms that share several classification levels would have common characteristics such as:

  • Type of teeth.
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In conclusion, an observation about this unfamiliar animal that will help you to find its taxonomic classification is if the animal has sharp, pointed teeth.

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7 0
2 years ago
Two numbers differ by 8 if their product is 713 then the sum of the two numbers is.
const2013 [10]

The sum of the two numbers is equal to 70.

  • Let the first number be x.
  • Let the second number be y.

In this exercise, you're required to find two numbers by translating the word problem into an algebraic expression and then solving for the unknown variables (x and y).

Translating the word problem into an algebraic expression, we have;

Two numbers differ by 8:

x-y=8    ....equation 1.

The product of the two numbers is 713:

xy=713    ....equation 2.

To calculate the sum of the two numbers:

First of all, we would solve for each of the unknown variables (x and y).

From eqn. 1, we have:

x=8+y   ....equation 3.

Substituting eqn. 3 into eqn. 2, we have:

y(y+8)=713\\\\y^2+8y=713\\\\y^2+8y-713=0

Solving the quadratic equation by factorization, we have:

y^2-31y +23y-713=0\\\\y(y-31)+23(y-31)=0\\\\(y+23)(y-31)=0

y = -23 or 31.

For the value of x, when y = 31:

x=8+31

x = 39

Now, we can calculate the sum of the two numbers:

x+y=39+31=70

Read more on word problems here: brainly.com/question/13170908

4 0
2 years ago
What is the importance of following the ethical standards in conducting a research brainly
Andre45 [30]
Norms promote the aims of research. Ethical standards promote the values that are essential to collaborative work. Researchers can be held accountable to the public. It also builds public support for research. And many of the norms of research promote a variety of other important moral and social values, such as social responsibility, human rights, animal welfare, compliance with the law, and public health and safety.

Hope this helps!

Brainliest would be nice but you don’t have to! :)
5 0
3 years ago
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