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IRINA_888 [86]
3 years ago
5

Give one example of when you would use the friendly numbers stratety to subtract. Explain why.

Mathematics
1 answer:
Nezavi [6.7K]3 years ago
6 0
U should use friendly numbers when subtracting.......the numbers have to be between 3 and 10
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1. Determine the value of y, if x is 5 for the function y = x2 -9.
user100 [1]
Sub in 5 for x
y=(5)2 -9
y= 10-9
y= 1
4 0
3 years ago
Natalie has three apples she slices each Apple into eighths how many 1/8 apple slices does she have
joja [24]
24 slices because you would do three apples times eight slices so you would get 24 slices
3 0
3 years ago
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Santos walks 2 kilometers south and then a certain number of kilometers east. He ends 5 kilometers away from his starting positi
IgorLugansk [536]

Answer:

\sqrt{21}\ km or  4.58\ km  

Step-by-step explanation:

we know that

Applying Pythagoras' Theorem, calculate how many kilometers eastward Santos walked

so

Let

x----> quantity of kilometers eastward that Santos walked

x^{2}=5^{2}-2^{2}

x^{2}=21

x=\sqrt{21}\ km ----> exact value

\sqrt{21}=4.58\ km  -----> approximate value

6 0
3 years ago
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The radius of a circle is doubled. Which of the following describes the effect of this change on the area? PLZZZ HELP!!! THE RED
goblinko [34]

Answer:

The area is multiplied by 4

Step-by-step explanation:

The area of a circle is directly proportional to its square radius so if the radius is increased by x, the area will be increased by x ^ 2

4 0
3 years ago
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How do you solve this?
GenaCL600 [577]

Answer:

EG = 41

Step-by-step explanation:

the 2 base angles are congruent then the triangle is isosceles with the 2 legs being congruent , that is

7x + 9 = 5x + 23 ( subtract 5x from both sides )

2x + 9 = 23 ( subtract 9 from both sides )

2x = 14 ( divide both sides by 2 )

x = 7

then

EG = 6x - 1 = 6(7) - 1 = 42 - 1 = 41

8 0
2 years ago
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