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8_murik_8 [283]
2 years ago
8

How to use the quadratic formula on a graphing calculator

Mathematics
1 answer:
wariber [46]2 years ago
7 0

Answer:

go to y= and type in the equation then  press 2nd trace  and then press  2 on the left side of the parabola find a point to the left of the x intercept and press enter then find a point to the right of the x intercept  and press enter. then press enter when it ask you to guess  and you have your answer

Step-by-step explanation:

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Two paths each of width 4m run across the middle of a rectangular field 24m long and 16m wide. Calculate the area of the paths.​
djverab [1.8K]

Answer:

272cm2

Step-by-step explanation:

4m×2=8

width ×long=area

8m×24m=272cm2

7 0
3 years ago
The volume of this prism is 4375cm3.<br> The area of the cross-section is 125cm2.<br> Work out x
fomenos

Answer:

x is 35 cm

Step-by-step explanation:

To find the value of x, we will divide the volume by the cross-section

Mathematically, that will be;

4375/125 = 35 cm

5 0
3 years ago
I need help, Now please
Sav [38]
Answer
D


Explanation:
7 0
3 years ago
Find the value of the underlined digit. 7.27​
Sauron [17]
Which of the digits are underlined ?
if it’s the first 7 it’s 7 ones
if it’s the 2 it’s 2 tenths
if it’s the last 7 it’s 7 hundredths
6 0
2 years ago
If the distance from the boat to the lighthouse is 120 meters and the angle of elevation is 40°, which of the following equation
Sidana [21]

You can use the fact that lighthouses are usually standing perpendicular to the ground that smaller distance on earth surface(planes or water bodies like sea or ocean or calm river) acts as if they a straight plane.

The length (y) of the lighthouse is given by:

Option D:  tan 40° = y over 120.

<h3>What is angle of elevation?</h3>

What you see something higher than your eye level height, you need to see up, you elevate your head to see that thing. The angle from the straight horizontal level of eye to the current elevated level is measured and named as angle of elevation.

Similarly, there is angle of depression when the observer looks down.

<h3>How to calculate the height of the considered lighthouse?</h3>

See the figure attached below to understand the symbols used in calculations.

Let the boat is on point C, and let the light house be AB.

Then we have:

Length of CA = 120 meters

∠ ACB = 40°

To find: length of AB

By using the trigonometric ratio tangent, we get:

tan(\angle ACB) = \dfrac{AB}{AC}\\\\tan(40^\circ) = \dfrac{h}{120}

Since here h is denoted by y, we have h = y, or

The equation to find the height of the lighthouse is

tan(40^\circ) = \dfrac{y}{120}

Thus,

The length (y) of the lighthouse is given by:

Option D:  tan 40° = y over 120.

Learn more about angle of elevation here:

brainly.com/question/12483071

8 0
2 years ago
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