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JulijaS [17]
2 years ago
14

The number of feet y in a measure varies directly as the number of meters x. Write a direct variation equation that can be used

to convert feet to meters, if 4 feet is about 1.25 meters.
Mathematics
1 answer:
Verizon [17]2 years ago
4 0

Answer:

Step-by-step explanation:

“y varies directly as x”

y = kx

Plug in (4, 1.25) and solve for k:

1.25 = 4k

k = 1.25/4 = 0.3125

The equation becomes

y = 0.3125x

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Which one is it ???????​
hram777 [196]
15 is the correct answer
4 0
2 years ago
A building makes a 90° angle with the ground. A ladder leans against the building, making a 110° exterior angle with the ground.
liberstina [14]

<u>Answer:</u>

A building makes a 90^{\circ} angle with the ground .The two interior angles are 70^{\circ} and 20^{\circ}

<u>Solution: </u>

Given, a ladder which is against the building wall makes an exterior angle of 110^{\circ}

And building makes a  90^{\circ} angle with the ground.

So, altogether it makes a right angle triangle with ladder as hypotenuse and ground as base leg and building as another leg.  

Now, we know that, sum of exterior angles and interior angles equals to 180^{\circ}

Here, in the case of ground and ladder, exterior angle is 110^{\circ} and interior angle is unknown.

Exterior angle + interior angle = 180

110 + interior angle = 180

Interior angle = 180 – 110

Interior angle = 70^{\circ}

We have found one of the two interior angles of right angle triangle.

We know that, sum of angles in a triangle is 180 degree

Known Interior angle + unknown interior angle + right angle = 180

70 + unknown interior angle + 90 = 180

Unknown interior angle + 160 = 180

Unknown interior angle = 180 - 160

Unknown interior angle = 20^{\circ}

Hence the two interior angles are  70^{\circ} and 20^{\circ}

7 0
3 years ago
(4x-5)+2(3x+1)<br> Can you help me solve this plz for me
Korvikt [17]

Answer:

10x - 3

Step-by-step explanation:

First, distribute 2 to all terms within the second parenthesis:

2(3x + 1) = (2 * 3x) + (2 * 1) = 6x + 2

4x - 5 + 6x + 2

Combine like terms (terms with the same amount of variables).

4x + 6x + 2 - 5

(4x + 6x) + (2 - 5)

10x + (-3)

10x - 3

10x - 3 is your answer.

~

8 0
3 years ago
Read 2 more answers
Trapezoid JKLM is shown on the coordinate plane below:
ololo11 [35]

Answer:

( 1, -4)

Step-by-step explanation:

To find this answer you go over 2 to the right on the x-axis, then go down 6 on the y-axis. This gives ( 1, -4).

3 0
3 years ago
4. Evaluate f(x) = - 9x + 8 at the given value
allsm [11]

Answer:

y= 9x + 8

Step-by-step explanation:

6 0
2 years ago
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