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lana [24]
3 years ago
12

Help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics
1 answer:
Anit [1.1K]3 years ago
8 0
Well the area of a trapezoid is defined by the following formula:
A = \frac{1}{2}(b_{1} + b_{2})h where b₁ and b₂ are the bases of the trapezoid and h is the height of the trapezoid.

Let's plug in what we know into this formula:
h = 7  the perpendicular distance between the two bases
b₁ = 15  the shorter parallel side
b₂ = 25  the longer parallel side made up of 4 + 15 + 6
so, A = \frac{1}{2} (15+25)(7)=140

This is in square units of measure of course, so 140 in² 
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It takes 27 pounds of seed to completely plant a 3-acre field. How many pounds of seed are needed per acre?
Ray Of Light [21]

Answer:

9 pounds of seed per acre.

Step-by-step explanation:

All you have to do is division.  It takes 27 pounds of seed to make 3 acres, so 27 divided by 3.  That gives you 9.

5 0
4 years ago
Use a net of the square pyramid, if necessary, to find the surface area of the pyramid.
Alika [10]

Answer:

160

Step-by-step explanation:

You take the area of one of the triangles, which is 24, multiply that by 4. You get 96. You then add 64, the area of the square base, and end up with 160.

5 0
3 years ago
Read 2 more answers
9 * 10^2 - 5.54 * 10^4
gtnhenbr [62]
Exaxt form
-5.45*10^4
Decimal Form
-54500
3 0
4 years ago
3. Classify the polygon below by its sides,<br>convex/concave, and regular/irregular​
wolverine [178]

Answer:

The polygon is a concave polygon

The polygon is irregular polygon

Step-by-step explanation:

Convex polygon is polygon that has all interior angles less than 180°

In a convex polygon, every diagonal of the figure passes only through interior points of the polygon

A line drawn through a convex polygon will intersect the polygon in exactly two points

Some of convex polygons can be regular polygons

Concave polygon is a polygon that has one or more interior angles greater than 180°

In a concave polygon, at least one diagonal of the figure contains points that are exterior to the polygon

A line drawn through a concave polygon, can intersect the polygon in more than two points

Concave polygon never be a regular polygon

From the attached figure

∵ The polygon has one diagonal lies out the interior of the polygon

∴ The polygon is a concave polygon

∵ All the concave polygons are regular polygons

∴ The polygon is irregular polygon

7 0
3 years ago
Nicole has $120. if she saves $20 per week, in how many days will she have $500?
ElenaW [278]
500= 120+20x, where x is weeks

Subtract 120 from both sides
380=20x

Divide both sides by 20
19=x

19 weeks*7 days per week= 133 days

Final answer: 133 days
4 0
3 years ago
Read 2 more answers
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