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artcher [175]
4 years ago
10

What is an equivalent to 18:4

Mathematics
2 answers:
Nikolay [14]4 years ago
8 0
9:2 is equivalent because it is dividing each side by the same amount. 18 divided by 2 is 9 and 4 divided by 2 is equal to 2, so 9:2 would be equivalent to 18:4.
tester [92]4 years ago
3 0
The Answer is simple As simple as is is You just look at the numbers Like 18 is equivalent to 9 and 4 is equivalent to 2 so if you combine them equivalent as you said it would be 18:4=9:2
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Add: 2x² - 8x -9 and 3 x² + 8x-2​
Delvig [45]

Answer:

<h2>5x^2 - 11</h2>

Step-by-step explanation:

We got to add these together so

2x^2-8x-9+3x^2+8x-2

the 2x^2 and 3x^2 add to 5x^2

the 8x and -8x cancel each other out

the -9 and -2 add to -11

so..

5x^2 - 11

I hope this helped :)

6 0
3 years ago
Read 2 more answers
Simplify the numerical expression (15 - 3) x 2 + 10
Kipish [7]

Answer:

34

Step-by-step explanation:

Using PEMDAS (parentheses, exponent, multiplication, division, addition, subtraction), we solve what's in the parentheses first, so the expression looks like: 12 x 2 +10.

Then since there aren't any exponents, we solve the multiplication problem in the expression: 24 + 10.

Which just leaves addition, which gives us our answer: 34

Hope this helps!

7 0
3 years ago
Which r-value suggests a strong negative correlation?
Troyanec [42]

Answer:

\boxed {\boxed {\sf D. \ r= -0.9874}}

Step-by-step explanation:

The correlation coefficient is a number between -1 and 1. It tells us the strength of the linear association and the direction.

We want to find the r-value indicating a strong negative correlation. A negative number indicates a negative correlation. Therefore, choices A and C can be eliminated, because they are positive numbers.

Now we are left with B (-0.1859) and D (-0.9874). The closer the r-value is to -1/1, the stronger the correlation. -0.9874 is much closer to -1 than -0.1859, so <u>choice D</u> is the stronger correlation.

6 0
3 years ago
Find the volume of the figure.
Afina-wow [57]

Answer:

Volume=480

Weight=62400pounds

Step-by-step explanation:

Volume=10x12x4

Volume=480

Density=130

Density=mass/volume

130=mass/480

Mass=130x480

Mass=62400

3 0
3 years ago
The quotient of two numbers is negative. What must be true about the two numbers?<br>​
SIZIF [17.4K]
One is positive and the other is negative
8 0
3 years ago
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