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3 years ago

I need help with this question.

Mathematics

1 answer:

Sunny_sXe [5.5K]3 years ago

5 0

A trapezoid is defined as a quadrilateral with only 1 pair of parallel sides. Since your Quadrilateral has 2 pairs, it can't be a trapezoid.

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The points (-1,2) and (4,y) have a slope of -4/5. what is the y-coordinate of the point (4,y)

Nastasia [14]

Answer:

y = - 2

Step-by-step explanation:

Calculate the slope m using the slope formula

m = ( y₂ - y₁ ) / ( x₂ - x₁ )

with (x₁, y₁ ) = (- 1,2) and (x₂, y₂ ) = (4, y)

m = $\frac{y-2}{4+1}$ , hence

$\frac{y-2}{5}$ = - $\frac{4}{5}$ ( cross- multiply )

5(y - 2) = - 20 ( divide both sides by 5 )

y - 2 = - 4 ( add 2 to both sides )

y = - 2

coordinates of point are (4, - 2)

7 0

3 years ago

3. A communications tower is 35 m tall. From a point due

BlackZzzverrR [31]

Answer:

BT = 12.73

LT = 32m

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers

The age of a boy is twice that of his sister. five years ago the boy was 3 times the age of his sister. How old is the boy

joja [24]

Answer:

<h2>20 years old.</h2>

Solution,

Let the age of sister be X

Let the age of boy be 2x

Now,

Five years ago,

 $3(x - 5) = 2x - 5 \\ or \: 3x - 15 = 2x - 5 \\ or \: 3x - 2x = - 5 + 15 \\ x = 10$ 

Again,

Replacing value,

 $age \: of \: boy = 2x \\ \: \: \: \: \: \: \: \: \: \: \: \: \: = 2 \times 10 \\ \: \: \: \: \: \: \: \: \: \: \: = 20$ 

hope this helps..

Good luck on your assignment..

7 0

3 years ago

Write each ratio in the simplest form. (Note: remember the units of measurement, they must be the same!)

Natali [406]

Answer:

a. 5:2

Step-by-step explanation:

1 ft = 12 in

30:12

Divide by 6

30÷6=5

12÷6=2

So, the answer is 5:2

3 0

2 years ago

Please help math !!!!!!

Andrews [41]

I think it’s the second choice

3 0

3 years ago

Read 2 more answers