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mart [117]
2 years ago
13

Random Samples 7th Grade Math

Mathematics
1 answer:
dsp732 years ago
4 0

Answer:

BBB

Step-by-step explanation:

b because they are just kids

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This is geometry. Please help explain this.
lina2011 [118]
Sorry I don’t now Gemini
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2 years ago
HELP ASAP 50 POINTS ITS GEOMENTRY
rusak2 [61]

Answer:

1.c

2.a

3.d

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4 0
2 years ago
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Work out the value of A
Mkey [24]

Answer:

that is really so difficult ? what do you not understand here ? please let me know, if you need any further explanations.

you know what the perimeter is ? if it's the circumference, the way around the object. in other words, the distance you have to walk, when going along all sidelines of the object.

so the perimeter is the sum of of all side lengths.

56 = x - 1 + 3x + 3x + 1 = 7x

x = 8

that gives us the side lengths :

x - 1 = 7 cm

3x = 21 cm

3x + 1 = 22 cm

the formula for the area of a triangle

A = baseline × height / 2

the advantage of a right-angled triangle in this regard is that the sides enclosing the 90 degree angle are already "acting" as baseline and the height (standing on the baseline with a 90 degree angle).

so, we can simply say here, the 3x side is the baseline, and the x-1 side is also the height.

therefore,

A = 21×7/2 = 147/2 = 73.5 cm²

6 0
2 years ago
Oliver earns $9 per hour. Write and solve an equation to find how many hours he must work to earn $315
natka813 [3]
Y=9x

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315/9=x

35=x
7 0
2 years ago
On Saturday, 12 friends go ice skating. Altogether, they pay $83.40 for admission. They share the cost equally. How much does ea
Svetradugi [14.3K]
83.40/12 = 3.95
Each person pays $3.95.
Hope this helps! :D
3 0
3 years ago
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