2 years ago

What 2 numbers add up to get -1 and multiply to get -20

Mathematics

1 answer:

Dovator [93]2 years ago

3 0

The two numbers that add up to get -1 and multiply to get -20 are -5 and 4
-5*4=-20
-5+4=-1
I hope this helps

You might be interested in

1. Find the phase shift of the function y = 5cos(2x + pi/2).

kolezko [41]

Answer:

see explanation

Step-by-step explanation:

The cosine function in standard form is

y = acos(bx + c)

where a is the amplitude, period = $\frac{2\pi }{b}$ and

phase shift = - $\frac{c}{b}$

here b = 2 and c = $\frac{\pi }{2}$ , thus

phase shift = - $\frac{\frac{\pi }{2} }{2}$ = - $\frac{\pi }{4}$

the amplitude = | a |

which has a maximum of a and a minimum of - a

y = 4cosx ← has a maximum value of 4

5 0

3 years ago

A new cell tower is being constructed and needs a guy-wire connected 180 feet up the tower and it needs to make an angle of 52°

nevsk [136]

Answer:

228.42 ft

Step-by-step explanation:

To solve for this question, we would be applying the Trigonometric function of Sine.

Sin theta = Opposite/Hypotenuse

Theta = 52°

Opposite = 180ft

Hypotenuse = Length of the wire = x

Hence:

sin 52 = 180/x

x = 180/sin 52

x = 228.42327871 ft

Approximately = 228.42 ft

6 0

2 years ago

Select the correct answer from the drop-down menu.

Papessa [141]

Answer:

21 times

Step-by-step explanation:

Given

$P(3) = 50 \%$

$n =42$

Required

The least number of times to land on 3

This is calculated using:

$Least = n * P(3)$

$Least = 42 * 50\%$

$Least = 21$

4 0

2 years ago

What is the ratio of one hour to 600 seconds?

Marat540 [252]

Answer:

6:1

Step-by-step explanation:

1 hr= 60 minutes

60 minutes= 3600 seconds

3600:600

36:6

5 0

3 years ago

Read 2 more answers

Graph the equation y= x^2 - 2x - 8 on the accompanying set of axes. You must plot 5 points including the roots and the vertex.

Vanyuwa [196]

Answer:

I'm not so sure about this one so sorry if this is wrong

Step-by-step explanation:

7 0

3 years ago