Answer:
x=-1,y=7
x=-3,y=3
Step-by-step explanation:
y=2x+9
5x^2+(2x+9)^2=54
0=(3x+9)(3x+3)
A 8 B. 15 C. 20 D. 25 E. 27
Answer:
15 hours, or B
Step-by-step explanation:
6 men - 10
12 men - 5
4 men - 15
Please mark as brainliest
Answer:
15 hours
Step-by-step explanation:
10/6 ≈ 3.7
4 * 3.7 = 14.8
-round it up-
14.8 ≈ 15
Answer:
hell
Step-by-step explanation:
nothing
What is the height of the package that has a radius of 5 in. and contains exactly enough bird seed to fill the feeder? Use 3.14 to approximate pi.
in.
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Jade scooped sand from a completely filled cylinder using a cone-shaped container. The cylinder had a diameter of 12 in. and a height of 5 in., and was one-fourth full after she scooped one full scoop of sand.
What were the dimensions of the cone-shaped container? Use 3.14 to approximate pi.
A.
h = 5 in.; r = 9 in.
B.
h = 9.6 in.; r = 15 in.
C.
h = 11.25 in.; r = 12 in.
D.
h = 15 in.; r = 6 in.
B-Regular octagon
C-Pentagon
D-Square
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Each angle measure of a regular polygon is 60°. What is the polygon?
square
quadrilateral
equilateral triangle
hexagon
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Select ALLthat apply.
Which of the following are true of a regular pentagon?
Each angle measure is 108°.
The angle sum is 720°.
It has six sides.
It is equilateral.
Answer:
1. Sqaure 2. Equialteral Triangle 3. Each angle is 108°
Step-by-step explanation:
Before we go ahead with this problem let us see the sum of all internal angles in various polygons.
a) Triangle : 180
b) Quadrilateral : 360
c) Pentagon : 540
d) Hexagon : 720
Now let us do each part
Part 1.
Polygon sum is 360° , hence it is a quadrilateral . And each angle measures 90° , Hence it is either a square or a rectangle . Hence our answer from options is square
Part 2,
Measure of each angle of polygon is 60°.
60°*3= 180°
60°*4=240°
60°*5=300°
None of the above gives you a polygon except first . Hence our answer is an triangle and as every angle is equal is an equilateral triangle.
Part 3,
A regular pentagon has sum of its all interior angles is 720°. Total nos. of angle is 5 . Hence measurement of each angle will be
Hence option b is right