All categories

3 years ago

Which statements are true of the quadrilateral she constructed? Select three options.

Mathematics

1 answer:

allochka39001 [22]3 years ago

5 0

Answer:

the 2nd one, 3rd one, and 5th one

Step-by-step explanation:

You might be interested in

HELP ME PLZ

joja [24]

Ok I think it’s 26 if I’m wrong sorry

7 0

3 years ago

Subtract.<br> (3r²s+ 4rs+2-16r²s²) - (7sr²+10-13r²s²)<br><br> Simplify answer. Do not factor

pentagon [3]

[- 3r²s² - 4sr² + 4rs - 8] is the resultant answer when we subtract the linear equation (7sr²+10-13r²s²) from (3r²s+ 4rs+2-16r²s²).

<h3>What are linear equations?</h3>

A linear equation in one variable is a mathematical expression for an equation with only one variable.
While any two real integers can represent A and B, the ambiguous variable x has just one possible value.
The formula is Ax + B = 0.
9x + 78 = 18 is an example of a linear equation with just one variable.

So, we have:

(3r²s+ 4rs+2-16r²s²) - (7sr²+10-13r²s²)

Now, calculate as follows:

= (3r²s+ 4rs+2-16r²s²) - (7sr²+10-13r²s²)
= 3r²s+ 4rs+2-16r²s² - 7sr²- 10 + 13r²s²
= 13r²s² - 16r²s² - 7sr² + 3r²s + 4rs - 10 + 2
= - 3r²s² - 4sr² + 4rs - 8

Therefore, [- 3r²s² - 4sr² + 4rs - 8] is the resultant answer when we subtract the linear equation (7sr²+10-13r²s²) from (3r²s+ 4rs+2-16r²s²).

Learn more about linear equations:

brainly.com/question/11897796

#SPJ13

7 0

1 year ago

The diagram shows some land in the shape of a quadrilateral ABCD. AB = 6 km, AD = 5 km and CD = 12 km Angle BAC = 30 The land is

Goshia [24]

Answer:

£495 million

Step-by-step explanation:

To find out the total cost of the land, we need to first calculate the area of the land.

Step 1: Find area of right angled triangle ADC

AD = 5 km,

DC = 12 km

Area of the right triangle = ½*a*b

a = 5km

b = 12km

Area = ½*5*12

= 5*6

Area of ADC = 30 km²

Step 2: Find the area of triangle ABC

First, let's find the length of AC using Pythagorean theorem

AC² = AD² + DC²

AC² = 5² + 12² = 25 + 144

AC = √169

AC = 13km

Area of ∆ABC = ½*AB*AC*sin(30°)

= ½*6*13*0.5

= 3*13*0.5

Area of ∆ABC = 19.5 km²

Total area of the land = area of ∆ADC + ∆ABC = 30 + 19.5 = 49.5 km²

Step 3: calculate how much the land costs

If the land costs £10 million per km²,

Cost of 49.5 km² = 49.5 × 10 = £495 million

4 0

3 years ago

Help!! 5.1 q2 Algebra

ICE Princess25 [194]

Answer:

4y^2-y+21

Step-by-step explanation:

(4y-5y)+(5y^2-y^2)+(-6+27)

-y+4y^2+21

put it in standard form

4y^2-y+21

6 0

3 years ago

a campground owner had 150 meters of fencing to enclose a rectangualr field adjacent to a river and also bisect that field into

nadezda [96]

Answer:

<em>Dimension of the Rectangle :</em> 2W - 150 by W

Step-by-step explanation:

Given

Land Size = 150 metres

This land size represents the perimeter of the land

Let P = Perimeter

So, P = 150 m

To bisect the field into two equal halves means to divide length or width of the field into two equal halves

Let L = Length of the field

Let W = Width of the field

Assuming the length of the field is to be bisected., then the campground owner is left with 0.5L (i,e half of the length)

Perimeter of a rectangle is calculated by: 2(Length + Width)

P = 2(L + W) by substitution, becomes

150 = 2(0.5L + W) ----open bracket

150 = L + 2W ---- Male L the subject the formula

L = 2W - 150

The dimension of the largest area that can be enclosed id given by (L,W)

By substitution; the expression becomes

<em>Dimension of the Rectangle :</em> 2W - 150 by W

8 0

3 years ago