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3 years ago

Evaluate the expression 2^3[1/4+4(36÷12)]

Mathematics

1 answer:

jeka57 [31]3 years ago

4 0

Answer:

Step-by-step explanation:

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I forgot how to do these... (Perimeter and Area)

vichka [17]

To find the perimeter, you add up all of the sides and lengths. To find the area, multiply the length by the width.

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3 years ago

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Help please and that you 13-16

denis-greek [22]

Answer:

See explanation.

Step-by-step explanation:

13. (4*5)/2 = 10

14. 5*7=35 7-3=4 8-5=3 (4*3)/2 = 6 35+6 = 41

15. 3*4 = 12

16. (4*4)/2 = 8 8*4=32 4*2=8 16*8=128 128-32 = 96

Let me know if you want me to better explain how I solved any of these.

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3 years ago

X-12y=-210 and x-6=90

m_a_m_a [10]

Answer:

x = -30

y = -20

Step-by-step explanation:

x - 12y = 210..... (I)

x - 6y = 90..... (II)

Subtract equation (II) from (I)

- 12y - (-6y) = 210 - 90

-12y + 6y = 120

-6y = 120

Divide through by -6y

Therefore, y = -20

Substitute y = -20 in equation (II)

x -6 (-20) = 90

x + 120 = 90

x = 90 - 120

x = -30

Hope that helped

7 0

3 years ago

-8x > 24 I have to solve the inequality.

bazaltina [42]

$Solution, -8x>24\quad :\quad \begin{bmatrix}\mathrm{Solution:}\:&\:x$

$Steps:$

$-8x>24$

$Multiply\:both\:sides\:by\:-1\:\left(reverse\:the\:inequality\right),\\\left(-8x\right)\left(-1\right)$

$\mathrm{Simplify},\\8x$

$\mathrm{Divide\:both\:sides\:by\:}8,\\\frac{8x}{8}$

$\mathrm{Simplify},\\x$

$The\:Correct\:Answer\:is\:x$

$Hope\:This\:Helps!!!$

$-Austint1414$

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4 years ago

An airplane flew with the wind for 2.5 hours and returned the same distance against the wind in 3.5 hours. If the cruising speed

KengaRu [80]

Answer:

60 miles per hour.

Step-by-step explanation:

Let r represent speed of wind blowing in miles per hour.

We have been given that the cruising speed of the plane was a constant 360 mph in air. The speed of the plane is the direction of wind would be $360+r$ .

The speed of the plane is the opposite direction of wind would be $360-r$ .

$\text{Distance}=\text{Speed}\times \text{Time}$

Distance covered in the direction of wind would be $2.5(360+r)$ .

Distance covered in the opposite direction of wind would be $3.5(360-r)$ .

Since both distances are same, so we will get:

$2.5(360+r)=3.5(360-r)$

$900+2.5r=1260-3.5r$

$900-900+2.5r+3.5r=1260-900-3.5r+3.5r$

$6r=360$

$\frac{6r}{6}=\frac{360}{6}$

$r=60$

Therefore, the wind is blowing at a rate of 60 miles per hour.

6 0

3 years ago