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Sauron [17]
3 years ago
9

A line has a slope of 4. What is the slope of any line perpendicular to this line? A −4 B −14 C 14 D undefined

Mathematics
2 answers:
ICE Princess25 [194]3 years ago
3 0

Answer:

-1/4

Step-by-step explanation:

Perpendicular lines have slopes that multiply to -1

m * 4 = -1

Divide by 4

m = -1/4

The slope of a line that is perpendicular to a line that has a slope of 4 is -1/4

viva [34]3 years ago
3 0

Answer:

-1/4

Step-by-step explanation:

The slopes of perpendicular lines are reciprocals of each other,

meaning if the slope of one line is 4 then its perpendicular lines slope is -1/4.

<em>Thus,</em>

<em>its slope is -1/4.</em>

<em />

<em>Hope this helps :)</em>

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Hannah purchased three items at the store for $7.05, $8.12, and $3.97. She paid for
vichka [17]

Answer:

She should receive $30.86

Step-by-step explanation:

$7.05 + $8.12 + $3.97 =19.14

50 - 19.14 = 30.86

6 0
2 years ago
How do you do 6x-11=-2x+5
qwelly [4]
X=2 because -2x+2 Is canceled then add 2x to 6x which is 8x then add 11 to -11 that’s canceled then add 11 to 5 which is 16 then divide 16 by 8x and x =2
4 0
2 years ago
Maths * Henry is mixing concrete. To make concrete he needs to mix cement, sand and gravel in the ratio 4 : 3 : 1 by weight. Hen
Mice21 [21]

Answer:

His 55 kg of cement is 5 kg short of the 60 kg he needs.

Step-by-step explanation:

Let r be a ratio useful in determining how much of each ingredient Henry needs:

4/8 of the mix is cement, 3/8 is sand and 1/8 is gravel.

4/8 of the total 120 kg must then be 60 kg made up of cement;

3/8                                 must then be 45 kg made up of sand; and

1/8                                   must then be 15 kg made up of gravel

His 55 kg of cement is 5 kg short of the 60 kg he needs.

8 0
3 years ago
Please answer this correctly without making mistakes I want ace expert and genius people to answer this correctly without making
nalin [4]
Alright first ranks doesn’t mean they’ll get it right. It just means how active the user is.
Now to answer your problem, c is given to be 0.5.
So 5(0.5) is the same as 5/2, which is 2.5.
So 10-2.5=7.5
3 0
2 years ago
Read 2 more answers
I don't understand this very much, but if someone could give me an explanation, that would be appreciated! ×·×∡
Rama09 [41]

Answer:

<em>119.0 cm²</em>

Step-by-step explanation:

What is surface area

It is the area of the outside part of anything. Surface area is also called total surface area.

As we can see from the pyramid, it has a square base. How do I know that it is a square base, is by seeing the dimensions of the base, which are 6.4 cm by 6.4 cm in this pyramid. And we already know from basic Geometry that a square has 4 equal sides. So we call it a square pyramid.

So to find the total surface area of this square pyramid, we need the area of the 4 triangular faces and the area of the square base.

So t.s.a of the pyramid = 4 × Area of each triangular face + Area of the square base.

So, total surface area = Area of square base + Area of the four triangular faces.

     <em>total surface area</em> = (<em>length²) + (</em>4 × \frac{1}{2} × <em>base × height)</em>

<em>      t</em><em>otal surface area =</em><em> </em>(6.4 × 6.4) + (4 × \frac{1}{2} × 6.4 × 6.1)

     <em>total surface area = 40.96 + 78.08</em>

<em>      total surface area = 119.04 cm² ≈ 119.0 cm² (to the nearest tenth) (Answer)</em>

5 0
2 years ago
Read 2 more answers
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