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prohojiy [21]
3 years ago
13

SOMEBODY PLZ CHECK IF MY ANSWER ARE CORRECT NO LINKS PLZ AND THANK YOU

Mathematics
2 answers:
hram777 [196]3 years ago
7 0

Answer:

the first one's right i think

lidiya [134]3 years ago
5 0
I think there all right but I just started at that so… :)
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Please help me with this question please
Arturiano [62]
Answer is the last choice

2a-4/1= -a-1/a-4
Cross multiply
(2a-4)(a-4)= -(a-1)
2a^2-8a-4a+16= -a+1
Bring right to left sign change signs
2a^2-8a-4a+16+a-1=0
Combine like terms
2a^2-11a+15=0

a= 2 b= -11 c= 15
Use quadratic formula

-b+-sq rt of b^2-4ac. Divided by 2a

-(-11) +- 11^2-4(2)(15) divided by 2(2)
11+-sq rt 121-120 divided by 4

11+1 /4. 11-1/4
12/4. 10/4
3. , 5/2
5 0
3 years ago
Work out the value of 3c-4d when c=5 and d= ½
nikdorinn [45]
3(5) - 4(1/2)
15 - 2 = 13
4 0
3 years ago
In a chess club, 75% of the members are boys. Of these boys, 8% have hazel eyes. If 6 boys have hazel eyes, how many people are
boyakko [2]

Answer:

100

Step-by-step explanation:

let 'n' = # chess club members

6 = 3/4 · 8/100 · n

6 = 3/50n

3n = 300

n = 100

7 0
3 years ago
A prism with a square base has a height of 15cm and a volume of 735cm3. Find the length of each edge of the base.
denis-greek [22]

Answer:

The length of each edge of the base is 7cm.

Step-by-step explanation:

The volume of a prism with square base is given by:

V = l^{2}h

In which l is the length of each edge of the base and h is the height.

A prism with a square base has a height of 15cm and a volume of 735cm3.

This means that V = 735, h = 15

So

V = l^{2}h

735 = 15l^{2}

l^{2} = \frac{735}{15}

l^{2} = 49

l = \pm \sqrt{49}

Length is a positive measure. So

l = 7

Volume in cm³, so the length of each edge is in cm.

The length of each edge of the base is 7cm.

6 0
3 years ago
15 (2/5+1 1/3)+ 3 please help
Paraphin [41]
56 is the answer :)) your welcome
5 0
3 years ago
Read 2 more answers
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