MATHEMATICS MIDDLE SCHOOL

which of the following is not a pythagoren tripple? A. 15, 46, 39 B. 24, 45, 51 C. 21, 72, 76 D. 18, 24, 30

Answers

Answer 1

Answer:

Answer:

Step-by-step explanation:

15^2 = 225 (memorize everything to 20, thank me later)

39^2 = 1521 (just use a calculator for everything higher)

225 + 1521

1521 =?= 45^2

45^2 = 2025

1521 =/= 2025

Just to be sure, I'll do 15^2 + 45^2 (going to be too much)

225 + 2025 = 2250

2250 =/= 1521

Answer 2

Answer: The answer would be a

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How do you solve this equation y+7=10

Answers

you should just add -7 in both sides of the equation so you gonna have :
y + 7 = 10
-7 -7
so you gonna have : y = 10- 7 and y = 3 :))
i hope this is helpful
have a nice day

Subtract from both sides to isolate the variable. (inverse operation)

y+7 = 10
-7 -7

y = 3

Final answer: y = 3

The number -2 is a solution to which of the following inequalities? -3x < 1
x - 7 < -4
-12/x> 10
x + 7 > 5

Answers

Substitute the value of x = -2 to the inequalities:

-3x < 1

(-3)(-2) < 1

6 < 1 FALSE

x - 7 < -4

-2 - 7 < -4

-9 < -4 TRUE

-12/x > 10

-12/(-2) > 10

6 > 10 FALSE

x + 7 > 5

-2 + 7 > 5

5 > 5 FALSE

Answer: x - 7 < -4

Step-by-step explanation:

x - 7 < -4, plug in the -2.

-2 - 7< -4, simplify; -2+-7=-9

=- 9<-4

413 divided by 14
How do you it?

Answers

You can either do this on the calculator, or in your head. As its a larger number, it is worth doing it on the calculator.
413/14= 29.5
The alternative method is to list all of the tens multiples, and the smaller multiples when you're getting close to the answer, and this will be able to help you.
14x10= 140
14x20=280
14x30= 420 (which is slightly too big)
14x29= 406 (slightly too small)
14x29.5= 413

Hope this helps :)

413/14 is how many times does 14 go into 413 is 29.5

If one term of a proportion is not known, what can be used to find the value of that term? a. substitution c. cross-multiplication b. graphing d. adding all the numbers together

Answers

Answer:

cross multiplication

Step-by-step explanation:

is 14 correct, can I get some help on 16 and 18, and do I need to find both x and y intercepts?? pls help asap :)

Answers

14 isn't correct.

14. y : 6 x : -2

16. y : 1 x : -1/3

18. y : -5/3 x : -1

Which of the following expressions results in 0 when evaluated at x = 4?O A. (x - 10)(x - 4)
OB. (x + 4)(x - 10)
O C.
(x + 6)(x - 2)
OD. 4x(x-6)

Answers

Answer:

A. (x - 10)(x - 4)

Step-by-step explanation:

Let x=4

O A. (4 - 10)(4 - 4) = -6 * 0 = 0

OB. (4 + 4)(4 - 10) = 8* -6 = -48

O C.(4 + 6)(4 - 2) = 10 * 2 = 20

OD. 4*4(4-6)=16*-2 = -32

Answer:

A. (x - 10)(x - 4)

Step-by-step explanation:

The product is 0 if one of the factors is 0.

(4 - 10)(4 - 4)

= (4 - 10)*0

= 0

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