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const2013 [10]
2 years ago
8

I really need help...

Mathematics
2 answers:
lianna [129]2 years ago
8 0
It could not be 73º because if you add that to 120 then it will be more than 180 degrees, which is the total number of degrees in a triangle. Hope this helps!
SSSSS [86.1K]2 years ago
4 0
The sum of interior angles in a triangle is 180°

If an angle is 120°, then the sum of the other angles is
180° - 120°
= 60°

First, second, and third options are less than 60°. So the three choices are possible angle to the triangle.

The fourth option isn't possible for the triangle. So the answer of the question is fourth option (73°)
You might be interested in
Type the correct answer in each box. (____)
trapecia [35]

Answer:

1. -16; 2. +64; 3. 16

Step-by-step explanation:

The formula for the volume of a cylinder is

V = πr²x

Data:

r = (x - 8)   mm

V = 1024π mm³

Calculations:

1. Find the cubic equation  

V = πr²h

1024π = π(x - 8)² × x

Divide each side by π

1024 = x(x - 8)²  

1024 = x(x² - 16x  + 64)

1024 =    x³ - 16x² + 64x

x³ - 16x² + 64x - 1024 = 0

2. Solve the cubic equation

The general formula for a third-degree polynomial is

f(x) = ax³ + bx² + cx + d

Your polynomial is  

f(x) = x³ - 16x² + 64x - 1024

a = 1; d = -1024

According to the <em>rational roots theorem</em>, the possible roots are

factors of d/factors of a

Factors of d = ±1, ±2, ±4, ±8, ±16, ± 32, ± 64, ±128, ±256, ±512, ±1024

Factors of a = ±1

Potential roots are x = ±1, ±2, ±4, ±8, ±16, ± 32, ± 64, ±128, ±256, ±512, ±1024

That's a lot of possibilities to check by trial and error. I will just use the one that works.

Try x = 16 by synthetic division.

16|1  -16   64  -1024

  <u>|     16     0   1024 </u>

   1     0   64        0

So,

(x³ - 16x² + 64x - 1024)/(x – 16) = x² + 64

and

(x - 16)(x² + 64) = 0

x - 16 = 0        x² + 64 =    0

     x = 16       x²         = -64

                       x          =  ±8i

There is only one real root: x = 16 mm

6 0
3 years ago
Dee Dee bought an Apple for $0. 85, a sandwich for $4. 50, and a bottle of water for $1. 50. How much did Dee Dee spend?
OLga [1]

To figure out how much she spent all we have to do is add up $0.85, $4.50 and $1.50

$0.85 + $4.50 + $1.50 = $6.85

Therefore she spent $6.85

Hope this helps

8 0
2 years ago
Read 2 more answers
1/4x - 3-4 &gt; 4<br> PLEASE SHOW THE WORK
enot [183]
X>44

.25(x)-3-4>4
.25(x)-7>4
.25(x)>11
x>11
3 0
2 years ago
Help me out? it would mean tons tysm
m_a_m_a [10]

Answer:

y - 5 = -3(x + 2)

General Formulas and Concepts:

<u>Algebra I</u>

Point-Slope Form: y - y₁ = m(x - x₁)  

  • x₁ - x coordinate
  • y₁ - y coordinate
  • m - slope

Step-by-step explanation:

<u>Step 1: Define</u>

Slope <em>m</em> = -3

Point (-2, 5)

<u>Step 2: Write function</u>

  1. Substitute:                    y - 5 = -3(x + 2)
3 0
2 years ago
Please hurry its timed
Arte-miy333 [17]

Answer:

Love the yeonjun pfp

Step-by-step explanation:

KINDA CUTE

6 0
2 years ago
Read 2 more answers
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