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3 years ago

Need help with these!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics

1 answer:

Gelneren [198K]3 years ago

8 0

Answer:

Step-by-step explanation:

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The length of the hypotenuse of a right angled triangle exceeds the length of the base by 2cm and exceeds twice the length of th

insens350 [35]

Answer: a = 8; b = 15; c = 17

Step-by-step explanation:

c = b + 2 and c = 2a + 1

b = c − 2 and a = $\frac{c-1}{2}$

c² = b² + a²

$c^{2} = (c-2)^{2} + \frac{c-1}{2}\\$

$c^{2}= \frac{4 (c-2)^{2}+(c - 1)^{2} }{4}$

$4c^{2}={4 (c^{2} + 4 -4c)+c ^{2} + 1-2c$

$4c^{2}={4 c^{2} + 16 -16c)+c ^{2} + 1-2c$

$c^{2}-18c+17=0$

$c(c -17)-1(c-17)=0$

$(c -1)(c-17)=0$

c = 1 or c = 17

If c = 1 then b = 1 - 2 = -1, that's not possible

So x = 17

b = 17 - 2 = 15

a = $\frac{17-1}{2} = 8$

Length sides of the triangle are 17 cm, 15 cm and 8 cm.

I saw some of this on a site but I want to make sure its correct so we're gonna apply the pythagorean theory and see if its correct.

$a^{2} + b^{2} = c^{2} \\8^{2} + 15^{2} = 17^{2} \\64 + 225 = 289\\289 = 289\\$

This shows that this is correct.

Hope this helped! Again, some of this was from a site, not from me.

3 0

3 years ago

1/4 of the players on every team are girls. Write 3 fractions equivalent to 1/4

Andrew [12]

Answer:

2/8, 3/12 and 4/16

Step-by-step explaination:

All these fractions are equivalent to 1/4 as the numerator is a multiple of 1, the denominator is a multiple of 4, and the numerators are all a quarter of their respective denominators.

6 0

2 years ago

Find the value. A. 1 B. 2 C. 3 D. 0.5

Ksju [112]

The cube root is 1
The Answer is A. 1

4 0

3 years ago

IF YOU ARE SMART DO THIS PROBLEM NOT PEOPLE WHO DONT WANN HELP

Alexxandr [17]

Answer:

3.28ft

Step-by-step explanation:

Rectangular Prism Formula:

l*w*d = v

(plug in values)

2.6*1.4*d=11.94

3.64*d=11.94

d = 3.28ft

5 0

3 years ago

beena has a cumulative deposit account rs.400 per month at 10% per annum simple interest. if she gets rs.30100 at the time of ma

Dima020 [189]

Answer:T=1.54yr

Step-by-step explanation:

Formulate for simple interest

I=prt/100

T=100I/pr

T=100×400×12/30100×10

T=1.54yr

6 0

3 years ago