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3 years ago

In order to solve the following system of equations we add :

Mathematics

1 answer:

vlabodo [156]3 years ago

5 0

False, you want to subtract in order to get rid of the 2x in both equations

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What is the product?

grin007 [14]

$(6r-1)(-8r-3)=6r(-8r-3)-1(-8r-3) \\ =-48 r^{2} -18r+8r+3 \\ =-48 r^{2} -10r+3$

5 0

3 years ago

Which ordered pair is a solution of the equation below? y=-7+2x?

Maru [420]

The answer to this question is:
x y
(1,-5) so the equation would be -5=-7+2(1)
-5=-7+2 -7+2=-5
-5=-5
hope this helps;)

8 0

2 years ago

Could someone help me understand how to solve this?

monitta

Answer:

Amount in 4% account: $550

Step-by-step explanation:

Use simple interest formula $I=P\cdot r\cdot t,$ where

I = interest

P = principal

r = rate (as decimal)

t = time.

<u>4% account:</u>

$P_1=x\\ \\r_1=0.04\\ \\t_1=1,$

then

$I_1=x\cdot 0.04\cdot 1=0.04x$

<u>5% account:</u>

$P_2=1,500-x\\ \\r_2=0.05\\ \\t_2=1,$

then

$I_2=(1,500-x)\cdot 0.05\cdot 1=0.05(1,500-x)$

You have earned $69.50 in total, so

$I_1+I_2=69.50\\ \\0.04x+0.05(1,500-x)=69.50\\ \\4x+5(1,500-x)=6,950\\ \\4x+7,500-5x=6,950\\ \\4x-5x=6,950-7,500\\ \\-x=-550\\ \\x=550\\ \\1,500-x=1,500-550=950$

Amount in 4% account: $550

Amount in 5% account: $950

8 0

3 years ago

What is the solution to 4 x + 6 less-than-or-equal-to 18? x less-than-or-equal-to 3 x less-than-or-equal-to 6 x less-than-or-equ

Nana76 [90]

Answer:

x-less than-or-equal-to 3

Step-by-step explanation:

4x + 6 < 18 (less than or equal to)

4x < 12 (less than or equal to) x < 3 (less than or equal to)

9 0

3 years ago

Read 2 more answers

Katie it making necklaces. She has 1/3 of blue ribbon 3/4 yard of pink ribbon & 7/8 yard of green ribbon. write the ribbon l

german

In order from greatest to least, the ribbons go

7/8 (Green)
3/4 (Pink)
1/3 (Blue)

This because 7 out of 8 is a larger number than 3 out of 4, and 3 out of 4 is greater than 1 out of 3.

8 0

3 years ago