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Katena32 [7]
3 years ago
5

I bed help with these two

Mathematics
2 answers:
Veseljchak [2.6K]3 years ago
8 0
21.5 is the first ine
frozen [14]3 years ago
5 0
Well if each band needs 15.5 inches and she needs to make 12 headbands she needs 15.5 inches 12 times. Now you can add 15.5 + 15.5 +15.5 (so on) 12 times or you can do it the easier way and do 15.5 times 12. this comes out to 186 inches of ribbon. She estimated 160 inches of ribbon, this is unreasonable because it is significantly less that 186. 
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The dimensions of a triangular prism are shown in the diagram. The prism is not drawn to scale.
Elden [556K]

Answer:

151200 cm³

Step-by-step explanation:

volume = (area of base) × (height of prism)

volume = bh/2 × H

volume = (32 cm)(63 cm)/2 × 150 cm

volume = 151200 cm³

3 0
2 years ago
Find the value for q for the following equation: 15q – 16 = 4(2q + 3)
Mars2501 [29]
Answer:
Q=4
15q-16=8q+12
7q-16=12
7q=28
Q=4
4 0
3 years ago
Read 2 more answers
Can someone simplify this, I just want to make sure that I’m doing what I’m doing right.
Harman [31]

Answer:

4

Step-by-step explanation:

you cant simplify a hole number

7 0
3 years ago
Q.Take out the area of the trapezium.<br>Parallel sides-15,23<br>Non parallel sides-10,8​
Dmitriy789 [7]

Answer:

Step-by-step explanation:

Area of a trapezium is the average of the parallel sides times the distance between them.

If we subtract 15 units from each of the parallel sides, we end up with a triangle that has two sides of 8 units and one of 10 units. One of the 8 unit sides is the base and we need to find the height h which is perpendicular to this base.

Let the base be split into two segments, call one A, the other will be 8 - A

From Pythagoras.

10² - A² = h² = 8² - (8 - A)²

10² - A² = 8² - (8 - A)²

100 - A² = 64 - (64 - 16A + A²)

100 - A² = 64 - 64 + 16A - A²

     100  =  16A

         A = 6.25

h = √(10² - 6.25²)

h = √60.9375  

A = ½(15 + 23)√60.9375  

A = 148.31870246... ≈ 148.3 cm²

3 0
3 years ago
Read 2 more answers
Do u no the answer please help
Gre4nikov [31]
The answers are B) and E)

3 0
3 years ago
Read 2 more answers
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