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Debora [2.8K]
3 years ago
14

When did the United States first establish its measuring system, and who was responsible for

Mathematics
1 answer:
Dimas [21]3 years ago
8 0

Answer:

1975 Thomas Jefferson

Step-by-step explanation:

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6. This solid is a composite of a cube and square pyramid. The base of the solid is the base of the cube. Find the surface area
Sergio039 [100]

Answer:

960 ft^2

Step-by-step explanation:

There are 9 surfaces forming the solid.

5 of them are congruent squares and 4 of them are congruent triangles.

area of square = (side)^2

area of triangle = (base)(height)/2

total surface area = 5 * area of square + 4 * area of triangle

A = 5 * (12 ft)^2 + 4 * (12 ft * 10 ft)/2

A = 5 * 144 ft^2 + 4 * 60 ft^2

A = 720 ft^2 + 240 ft^2

A = 960 ft^2

3 0
2 years ago
Find the vertices and foci of the hyperbola with equation quantity x plus 1 squared divided by 225 minus the quantity of y plus
miss Akunina [59]

Answer:

The vertices are (-16,-5) and (14,-5)

The foci are (-26,-5) and (24,-5)

6 0
3 years ago
WORTH ALOT!!! 25) A hockey player signs a contract with a starting salary of $840,000 per year and an annual increase of 6.5% be
Oduvanchick [21]

the answer is A I hope this helps

6 0
3 years ago
8 divided by 2/3 in a word problem
sattari [20]

Answer:

12

Step-by-step explanation:

8/1 ÷ 2/3

Keep the first fraction and flip the second one: 8×3/ 1×2

Multiply top and bottom: 24÷2

Simplified to be 12

7 0
3 years ago
What is the sum of the measures of interior angles ofna regular polygon if each exterior angle measures 72°?
WARRIOR [948]
We know that

The exterior angle measures of a polygon must add up to 360°, 

therefore

 360°/72°=5 exterior angles

so

5 exterior angles, would mean 5 interior angles and therefore  5 sides to the polygon

The exterior angle and the interior angle of any polygon are supplementary and must add up to 180°.

exterior angle+interior angle=180°

interior angle=180°-exterior angle

interior angle=180°−72°-------> 108°
Each interior angle is 108°

The sum of the interior angles would be 

5*108°=540°

the answer is

540°

5 0
3 years ago
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