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SVEN [57.7K]
3 years ago
14

Can somebody help please

Mathematics
1 answer:
FromTheMoon [43]3 years ago
6 0

Answer:

a1 = -10

an = an-1 * -2

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Solve 3x − 2y = −21 and 2x + 5y = 5 using elimination
nydimaria [60]

Answer:

x = -5 and y = 3

Step-by-step explanation:

There are two equations :

3x − 2y = −21 ....(1)

2x + 5y = 5 ......(2)

Multiply equation (1) by 2 and equation (2) by 3.

6x - 4y = -42 ...(3)

6x + 15y = 15 ....(4)

Subtract equation (4) from (3) :

6x - 4y - (6x + 15y) = -42 -15

-4y -15y = -57

-19y = -57

y = 3

Put y = 3 in equation (2) :

2x + 5(3) = 5

2x = 5-15

2x = -10

x = -5

So, the value of x is (-5) and y = 3.

6 0
3 years ago
98 is what percent of 2487
zloy xaker [14]
98/2487= <span>0.0394049055</span>
3 0
3 years ago
Read 2 more answers
3(2x + 11) and (3x + 15)(2)
algol [13]

Answer:

3(2x+11)= 6x+33  and (3x+15)(2) = 6x+30

Step-by-step explanation:

Use distributive property to multiply the outside factor to each factor inside the parenthesis.  

3(2x+11)

(3*2x)+(3*11)

6x+33

3 0
3 years ago
What is 36.5625 in fraction form
Romashka [77]
The answer is one hundred seventeen over three hundred twenty or 117/320

4 0
3 years ago
1 foot =12 inches therefore 3 feet = what
scoundrel [369]

Answer:

36 inches

Step-by-step explanation:

Just multipy 3 by 12.

5 0
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