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3 years ago

Simplify the following. (the answer is not 0)

Mathematics

2 answers:

KATRIN_1 [288]3 years ago

6 0

Answer:

Step-by-step explanation:

4[5+2(6-2*3)]-5[4(16÷4-12÷4)-4+2]

4[5+2(6-6)]-5[4(4-12÷4)-4+2]

4[5+2(6-6)]-5[4(4-3)-4+2]

4[5+2(0)]-5[4(1)-4+2]

4[5+0]-5[4-4+2]

4[5]-5[0+2]

4[5]-5[2]

20-5[2]

20-10

Delvig [45]3 years ago

3 0

Answer:10

Step-by-step explanation:

4[5+2(6-6)]-5[4(4-3)-4+2]=20-5[4-2]=10

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Answer this math question pls I'm in a rush

777dan777 [17]

Answer:

61/18

Step-by-step explanation:

Make the mixed fraction an improper fraction first. So instead of 1 1/3, it'll be 4/3.

Now in a rectangular prism, there's two of each congruent sides (three pairs in total).

You'll need to multiply (4/3)(3/4) by 2 because there's two of them.

This gives you (1)(2) which equals 2.

Next, take another set --> (4/3)(1/3)(2) again because there's two of them.

This gives you (4/9)(2) which equals 8/9.

Last, take the last set --> (3/4)(1/3)(2)

This gives you (1/4)(2) which equals 1/2.

Now that you have all the areas of the rectangles, add them all together.

2+8/9+1/2 which equals 61/18 inches squared.

6 0

3 years ago

Which of these phrases contain a variable? Check all that apply.

kaheart [24]

Answer:

The length of the hall way

the weight of the wombat

4 0

2 years ago

Read 2 more answers

Which expression is equivalent to (-5 x 2^2 x 2^0)^-2

Aloiza [94]

=(-5 x 4 x 1)^-2
= (-20)^-2
= 1/(-20)^2
= 1/400

so D then i think

3 0

3 years ago

A rock is thrown up from the ground at a velocity of 84 feet per second. The formula h = -16t2 + 84t gives the rock's height in

kenny6666 [7]

Answer:

h = 110.24 m

Step-by-step explanation:

It is given that,

A rock is thrown up from the ground at a velocity of 84 feet per second. The formula $h = -16t^2 + 84t$ gives the rock's height in feet after t second.

We need to find the maximum height of the rock. For maximum height put $\dfrac{dh}{dt}=0$

So,

$\dfrac{d( -16t^2 + 84t)}{dt}=0\\\\-32t+84=0\\\\t=\dfrac{84}{32}\\\\t=2.62\ s$

Put t = 2.62 s in the equation of height. So,

$h = -16(2.62)^2 + 84(2.62)\\\\h=110.24\ m$

So, the maximum height of the rock is 110.24 m.

7 0

3 years ago

I WILL GIVE YOU 20 POINTS AND THE BRAINLYEST

fiasKO [112]

Answer/Step-by-step explanation:

✍️Slope of the line using two points, (2, 2) and (6, 10),

$slope (m) = \frac{y_2 - y_1}{x_2 - x_1} = \frac{10 - 2}{6 - 2} = \frac{8}{4} = 2$

✍️To find the equation of the line in slope-intercept form, we need to find the y-intercept (b).

Substitute x = 2, y = 2, and m = 2 in y = mx + b, and solve for b.

2 = (2)(2) + b

2 = 4 + b

2 - 4 = b

-2 = b

b = -2

Substitute m = 2 and b = -2 in y = mx + b.

✅The equation would be:

$y = 2x + (-2)$

$y = 2x - 2$

✍️To find the value of a, plug in (a, 8) as (x, y) into the equation of the line.

$8 = 2(a) - 2$

$8 = 2a - 2$

Add 2 to both sides

$8 + 2 = 2a$

$10 = 2a$

Divide both sides by 2

$\frac{10}{2} = a$

$5 = a$

a = 5

✍️To find the value of b, plug in (4, b) as (x, y) into the equation of the line.

$b = 2(4) - 2$

$b = 8 - 2$

$b = 6$

5 0

3 years ago