MATHEMATICS MIDDLE SCHOOL

Anybody knows the answer?

Answers

Answer 1

Answer:

The top and bottom faces are 3 inches by 3 inches.

Area = 3 in. * 3 in. * 2 = 18 in.^2

The front, back, right, and left faces are 3 in. by 6 in.

Area = 3 in. * 6 in. * 4 = 72 in.^2

Total surface area = 18 in.^2 + 72 in.^2 = 90 in.^2

Answer: B. 90 square inches

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Determine the ordered pair that satisfies the equation, 2x - 8y = -9.
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How can you get 77 cents using 10 coins
Can someone PLEASE explain cos and sin?!

What unit of measurement would you use to measure the length of a soccer field

Answers

Soccer fields are measured in yards.

Yards would be considered the usual (;

What is the probability of losing 6 times in a row playing Heads or Tails flipping a coin?

Answers

The probability of losing per flip is 1/2. Multiply 1/2 by itself 6 times since the condition is asking for the probability for the person to lose 6 times in a row. 1/2 * 1/2 * 1/2 * 1/2 * 1/2 * 1/2 = 1/64. The answer is 1/64.

A coin has 2 sides so you have a 50% chance at getting the side you choose. If you flip it 6 times you multiply 1/2 by itself 6 times.

$(1)/(2) * (1)/(2) * (1)/(2) * (1)/(2) * (1)/(2) * (1)/(2) = {\boxed{(1)/(64)}$

Answer: $(1)/(64)$

What's distributive property to express 15 + 45

Answers

Distribute 3*(5+15) or 5*(3+9) or 15*(1+3)

this will work
5 (3 + 9)

=

15 + 45

What is the equation of the line that passes through (0,3) and (7,0)

Answers

Answer:

y = (-3/7)x + 3

Step-by-step explanation:

As we go from (0,3) to (7,0), x increases by 7 from and y decreases by 3 to 0.

Thus, the slope of this line is m = rise / run = -3/7.

Subst. the appropriate values from this info into the slope-intercept form of the equation of a straight line:

y = (-3/7)x + 3 Note that the y-intercept is given: (0,3).

Write the number that is 6 more tens and 8 more ones than the number 30

Answers

The answer is 98. 6 tens is 60 ones and add that to 8 ones is 68 ones total. So, 68 ones plus 30 ones equals 98 ones.

Answer:

C = 21

Step-by-step explanation:

I just took the test and i got it right

30% = (0.30) x (72) = 21.6 = 21

Marco wrote the equation below. Cos ( -π /2) = cos ( 3π / 2)

Which statement best describes Marcos equation?

Answers

Answer:

It is true, because the cosine function has a period of 2π

Step-by-step explanation:

Since, the period of the cos function is 360° ( or 2π radians ), it holds the property of:

$Cos(\theta)=Cos(2\pi +\theta)$

Taking $\theta$ as $-(\pi)/(2)$ , $(2\pi + \theta)$ is equal to $2\pi + (-(\pi)/(2))\n=2\pi - (\pi)/(2)\n=(4\pi-\pi)/(2)\n=(3\pi)/(2)$

The equation is true!

Note: The cos function is even function

Hence, the equation is true, because the cosine function has a period of 2π, NOT because the cosine function is ODD, which it is not!!

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