3 years ago

If a triangle has side lengths 27, 79, and 84 is it a right triangle

Mathematics

1 answer:

timofeeve [1]3 years ago

4 0

Answer:

Nope

Step-by-step explanation:

A right triangle must have a 90 degree angle.

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2x - 3y = 8 -2x + 6y = -20 x = ? y = ? solve the system of equations

Zolol [24]

Answer:

x = 4 + 3/2y

y = -8/3 + 2/3x

1. Finding X

2x-3y=8

2x=8+3y

x+4+3/2y

2. Finding Y

2x-3y=8

-3y=8-2x

y=-8/3+2/3x

7 0

3 years ago

Write and expression for “the sum of d and 9”

Natali [406]

Sum means to Add.

So the sum of d and 9 would be d + 9

5 0

3 years ago

Read 2 more answers

Evaluate the expression into simplest form

sattari [20]

Work out the top subtraction first:

3/9 - 8/12

= 1/3 - 2/3

= 1/3

and the bottom part:-

3/8 * 2 = 6/8 = 3/4

so now we divide -1/3 by 3/4

= -1/3 * 4/3 = -4/9

5 0

3 years ago

Determine by inspection (i.e., without performing any calculations) whether a linear system with the given augmented matrix has

devlian [24]

Answer:

Infinitely Many Solutions

Step-by-step explanation:

Given

$\left[\begin{array}{cccccc}1&2&3&4&5&6\\7&6&5&4&3&2\\8&8&8&8&8&8\end{array}\right]$

Required

Determine the type of solution

From the matrix, we have:

3 non-zero rows and 5 variables (the last column is the result)

When the number of variables is more than the number of non-zero rows, then such system has infinitely many solutions

i.e.

$Variables > Non\ zero\ rows$

$5 > 3$

8 0

2 years ago

Economists predict that Americans will spend $1,180 on Summer Vacation in 2015, this is up 4.8% from 2014. What did Americans sp

natta225 [31]

Answer:

$1151.4

Step-by-step explanation:

let americans spend $a in 2014

(1+4.8%)a=1180

104.8%a=1180

a=1151.4 (rounded off to the nearest tenths)

7 0

3 years ago