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3 years ago

How could you use the property to compute 2x8x2 mentally

2 answers:

8 0

First you need to kbkw you 2x tables then you multiply 2x8=16x2=32 the best way to do it is to break ot down in your head say that you know that 2x2=4 then you do 4x8=32

Llana [10]3 years ago

8 0

2×8=16×2=32 that is how you would get the answer

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Show that the triangle below is not a right-angled triangle.

Paha777 [63]

Step-by-step explanation:

A right triangle is a triangle in which one of the angles is a 90∘ angle.

$(5x - 8) + (2x - 5) + (2x + 3) = 180 \\ 9x - 10 = 180 \\ 9x = 190 \\ x = \frac{190}{9} \\ x = 21.11$

$(5x - 8) =97.56 \\ (2x - 5) =37.22 \\ (2x + 3) =45.22 \\$

Since None of the angels is 90° , so the triangle is not a right triangle.

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3 years ago

Help me please! What is the solution to this equation?

marusya05 [52]

Answer:

A. 21...............

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3 years ago

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erica [24]

Answer:

x = 19

Step-by-step explanation:

(5x + 4)° + (x - 2)° + (3x + 7)° = 180°

(5x + x + 3x)° + (4 - 2 + 7)° = 180°

9x° + 9° = 180° → ÷9

x + 1 = 20

x = 20 - 1

x = 19

7 0

2 years ago

Which algebraic expression represents “the difference of fifty-four and seven times a number”? 54 minus 7 n StartFraction 54 Ove

VMariaS [17]

Answer: 54-7n

Step-by-step explanation:

When we talk about mathematical language, the difference between two numbers, quantities or terms is the substraction operation.

For example, the difference between a and b is:

a-b

On the other hand, if we read a numer c times a number n, this means both numbers are multiplied.

For example:

c times n is:

(c)(n)

So, according to the explained above, “the difference of fifty-four and seven times a number n” is:

54-7n

8 0

3 years ago

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kati45 [8]

Slope: 1/5

Y-intercept: 0

Equation: Y= 5x

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3 years ago