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3 years ago

How do you simplify this expression? -12 divided by 3•(-8+(-4)*2-6)+2

Mathematics

1 answer:

garri49 [273]3 years ago

6 0

0.1875

Step-by-step explanation:

Step 1:

Let the given expression in word form be expressed as

$(-12)/(3(-8 + ((-4)(2)) - 6) + 2)$

Step 2:

Let us we simplify it using BODMAS rule.

(-12)/ ( 3(-8-8-6) + 2)

(-12) / (3(-22)+2)

0.1875

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Solve the following systems by Elimination

Alenkasestr [34]

Answer:

The solutions for both system of equations are as follows:

(5,2)
(2,-1)

Step-by-step explanation:

The first set of equations is:

$4x+6y=32\\3x-6y=3\\$

It can clearly be seen that the coefficients of y are already same in magnitude with different signs so we have to add both equations

So adding both equations, we get

$4x+6y+3x-6y = 32+3\\7x = 35\\\frac{7x}{7} = \frac{35}{7}\\x = 5$

Putting x=5 in equation 1

$4(5)+6y = 32\\20+6y = 32\\6y = 32-20\\6y = 12\\\frac{6y}{6} = \frac{12}{6}\\y = 2$

The solution is (5,2)

The second set of simultaneous equations is:

$-3x+5y=-113x+7y=-1$

We can see that the coefficients of x in both equations are same in magnitude with opposite signs so

Adding both equations

$-3x+5y+3x+7y = -11-1\\12y = -12\\\frac{12y}{12} = \frac{-12}{12}\\y = -1$

Putting y= -1 in first equation

$-3x+5(-1)=-11\\-3x-5=-11\\-3x=-11+5\\-3x=-6\\\frac{-3x}{-3} = \frac{-6}{-3}\\x = 2$

The solution is: (2,-1)

Hence,

The solutions for both system of equations are as follows:

(5,2)
(2,-1)

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2 years ago

maddy has 5678 memes, she drops 580 of them and gives away 3950 memez. how many memez do i have left ^yes ik the answer i just w

melamori03 [73]

Lol, the answer is 1148

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3 years ago

Read 2 more answers

Y/4+−49=−9

Monica [59]

Remember you can do anything to an equation as long as you do it to both sides

(y/4)-49=-9
isolate the variable
add 49 to both sides
y/4=40
multiply both sides by 4 to clear fraction
y=160

4 0

3 years ago

Read 2 more answers

Question 10

KonstantinChe [14]

Answer:

area of the trapezoid=1/2(7+12)×5

=47.5cm

7 0

2 years ago

Disregarding wind resistance the distance a body falls from rest varies directly as th squares of the time it falls if a skydive

Firdavs [7]

Answer:

The skydiver will fall 1600 ft in 10 seconds.

Step-by-step explanation:

<u>Distance a body falls from rest varies directly as the squares of the time it falls </u>

Let distance = s

time = t

Therefore , s = k $\times t^{2}$

Given, the body falls 64 ft in 2 seconds.

Substituting in above equation,

64 = k $\times (2)^{2}$

64 = k $\times (4)$

k = $\frac{64}{4}$

k = 16 ft/ $s^{2}$

We have to find how much he will fall in 10 seconds.

s = k $\times t^{2}$

s = $16 \times 10^{2}$

s = $16 \times 100$

s = 1600 ft

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3 years ago