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stellarik [79]
3 years ago
13

I need help with these questions

Mathematics
2 answers:
bazaltina [42]3 years ago
8 0

Answer:

1) 18.3m-16.5m=2.8m

2) 1.43m-135cm=0.81m

3) 0.16m+1.55m+0.13m=0,84m or 84cm

4)-

5)-

Step-by-step explanation:

2)cause 135cm is 1.35m

Scrat [10]3 years ago
5 0

<u><em>Answer:</em></u>

(2nd question, asking about height)  

8cm or 0.08m

<u><em>Step-by-step explanation:</em></u>

1.43m - 143cm

(1m = 100cm)

143cm - 135cm = 8cm

<u><em>Answer:</em></u>

445mm & 44.5cm

<u><em>Step-by-step explanation: </em></u>

155mm - 15.5cm

(1mm = 0.1cm)

15.5 + 16 + 13 = 44.5cm

44.5cm - 445mm

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8 0
3 years ago
Read 2 more answers
I need help! This is Geometry lesson 8-3 ! Please help me asap!!!!
gulaghasi [49]
If you learned about the 45-45-90 triangle (which is isosceles), then the faster way is to know that the hypotenuse (side opposite of right angle) is √2 times either one of the sides.
3√2 = (√2)x
x = 3

But if you didn't learn the 45-45-90 triangle yet, that's ok.
Recall the trigonometric ratios for right triangles: sine (sin), cosine (cos), tangent (tan).

If your angle is x, then
sin(x) = opposite side / hypotenuse
cos(x) = adjacent side / hypotenuse
tan(x) = opposite side / adjacent side

Remember the hypotenuse is the side opposite and across from the right angle (3√2 in this case).
An acronym to remember this is SohCahToa.

In this problem, the angle given is 45°, and you need to find the length of the adjacent side x. The hypotenuse is also given as 3√2.

Because we have the adjacent side and the hypotenuse, we use cosine to relate those two sides
cos(45°) = x / (3√2)
x = (3√2)cos45°
If you plug this into your calculator (in degree mode), then
x = 3

8 0
3 years ago
I need help pls explain
vladimir1956 [14]
For 1. The bike is going 24 miles in 3 hours. To figure out how many miles it went in 1 hour you divide 24/3 which is 8 miles. If the bike went 8 miles per hour then you may now multiply it by 10 to find the total mileage in 10 hours. 10x8=80
8 0
3 years ago
Alexander has nickels, dimes, and quarters in the ratio of 2:1:8, if 40 of Alexander's coins are quarters, how many nickels and
ch4aika [34]

Answer:

He has 10 nickels and 5 dimes

Step-by-step explanation:

We can take advantage of the ratio by dividing 40 by 8, giving us that every 1 in the ratio = 5. So we can multiply 2 x 5 = 10 and 1 x 5 = 5.

Hope this Helps!

4 0
3 years ago
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