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3 years ago

Help pleaseee! I will give you brainliest

Mathematics

1 answer:

iren [92.7K]3 years ago

3 0

Answer:

The axis of symmetry is x= -2

Step-by-step explanation:

The axis of symmetry is found by

h = -b/2a where ax^2 +bx+c

y = x^2 +4x-5

a = 1 b=4

h = -4/(2*1)

= -4/2 = -2

The axis of symmetry is x= -2

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olchik [2.2K]

Answer:

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

To find the height of a pole, a surveyor moves 120 feet away from the base of the pole and then, with a transit 8 feet tall, mea

Vikki [24]

Refer to the figure.
Let AB be the height of the pole; CD be the height of the transit; BC is the distance from the base of the pole to the transit.

Triangle ADE is a right triangle with angle D measuring 26 degrees. Using the tangent function, we have
$tan\:26^{\circ} =\frac{AE}{120}$
So,
$AE=120\:tan\:26^{\circ}$
$AE=58.53\:$

Therefore, the overall height of the pole is
$AB=58.53+8=66.53\:feet$

The height of the pole is 66.53 feet.

6 0

3 years ago

*80 POINTS!!!! PLEASE HELP ME I HAVE BEEN WAITING FOR MORE THAN AN HOUR!!!!!!!!!! MARKING AS BRAINLIEST!! PLEASE SHOW WORK AND E

ruslelena [56]

Answer:

D. tan(-π/6)

Step-by-step explanation:

The tangent function is periodic with a period of π, so ...

tan(5π/6) = tan(5π/6 ± kπ) . . . for any integer k

For k = -1, we have ...

tan(5π/6) = tan(5π/6 -π) = tan(-π/6)

7 0

2 years ago

What is 60% of 125? Enter your answer in the box.

Law Incorporation [45]

Answer:

explanation: because i looked it up

7 0

2 years ago

What is 20% of 95? (show all work)

elena-s [515]

we know that if 95 is out of 100%, we can write it down as 95 = 100%. we also know that x is 20% of the output value, so we can write it down as x = 20%. 
now we have the equations:
95=100%
x=20%
next we will put the equations together
95/x = 100%/20%
95/x=100/20
(95/x)*x=(100/20)*x
we multiply both sides of the equation by x
95=5*x
now we divide both sides of the equation by 5 to get x
95/5=x 
19=x 
x=19
we now know that 20% of 95 = 19
let me know if you have any other questions
:)

6 0

3 years ago