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3 years ago

The distance between -18 and 15 is equal to _____. 18 - 15 15 - 18 -18 - 15 15 - (-18)

Mathematics

1 answer:

NemiM [27]3 years ago

5 0

Answer: Choice D. 15 - (-18)

This results in 15 - (-18) = 15 + 18 = 33.

So from -18 to 15 on a number line is 33 spaces.

We can also say

|-18 - 15| = |-33| = 33

The use of absolute value is to ensure the distance is never negative.

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Factorise tis please. <img src="https://tex.z-dn.net/?f=%20%28x%2B3%29%5E%7B2%7D%20%2B2%28x%2B3%29" id="TexFormula1" title="

Otrada [13]

$\displaystyle \boxed{(a+b)=a^2+2ab+b^2} \\ \\ (x+3)^2+2(x+3)= \\ x^2+2 \cdot x \cdot 3 +3^2+2x+6 = \\ x^2+6x+9+2x+6= \\ x^2+8x+15= \\ \\ \Delta= b^2-4ac \\ \Delta=8^2-4 \cdot1 \cdot15 \\ \Delta=64-60=4 \\ \\ \\ X_{1,2}= \frac{-b\pm \sqrt{\Delta} }{2a} = \frac{-8\pm2}{2} = \\ \\X1=5 \\ X2=3$

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3 years ago

What is the coefficient in the expression 5+9 y

damaskus [11]

Answer:

Step-by-step explanation:

because 9 is in front of the variable y

whenever there is a number before a variable then that number is a coefficient

For example:

3x+2x+5x=y

3,2,5 are all coefficients of x

7 0

3 years ago

2(p+1)=18 A)8.5 B)9.5 C)8 D)10

Paladinen [302]

The answer to this question is:

C) 8.

6 0

3 years ago

Which side lengths form a right triangle?

fredd [130]

Answer:

Answer: $\huge\mathfrak\pink{S} \huge\mathfrak\purple{o} \huge\mathfrak\blue{l} \huge\mathfrak\red{u} \huge\mathfrak\green{t} \huge\mathfrak\pink{i}\huge\mathfrak\purple{o}\huge\mathfrak\red{n}\huge\mathfrak\orange{➔}\$ Pythagoras law:h²=p²+b²

needed to apply

4²+8²=12²

80≠144 not a right angled triangle

again

2²+√5²=3²

9=9/

side are a right angled triangle

again

2²+2²=(√8)²

4+4=8

8=8

side are a right angled triangle

4 0

3 years ago

Which of the diagrams below represents the statement "If it is not a gorilla, then it is not an ape"?

DaniilM [7]

Comment is correct, I mis read. it is figure B since not gorilla is inside not ape

8 0

3 years ago

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