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zysi [14]
3 years ago
11

Someone deleted my questions- okay? answer this then- 2/3-6/7+7/8

Mathematics
1 answer:
Afina-wow [57]3 years ago
4 0

Answer:

8/5 + 6 2/7

Step-by-step explanation:

Step 1: Make sure the bottom numbers (the denominators) are the same. Step 2: Add the top numbers (the numerators), put that answer over the denominator. Step 3: Simplify the fraction (if needed) hope I helped!!

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Help........................................
Margarita [4]

Answer:

a, the first option

Step-by-step explanation:

You solve the inequality equation just like any other equations. The only difference is that you gotta flip the sign whenever you multiply or divide by a negative number.

The result is p>32, which is an open-circle at 32 that points toward all values greater than 32

3 0
3 years ago
olve. A 10 meter ladder is leaning against a building. The bottom of the ladder is 5 meters from the building. How many meters h
ira [324]
The top later is 5 because if the ladder is 10 inches half is 5 and the other half is 5
8 0
3 years ago
For this item, any answers that are not whole numbers should be entered as a decimal, rounded to the tenths place. Brian's schoo
LenaWriter [7]

Answer:

  1. The probability that the locker code begins with a prime number is 40%.
  2. The probability that the last digit of the locker code is an odd number is 40%

Step-by-step explanation:

  1. Prime numbers are the numbers that only divide with 1 or itself. So in this case it is 5 and 7.

The possible combinations are

1*4*3 (with 5) +  1*4*3(with 7) = 24

Total combinations are 5*4*3=60

(24/60)*100 = 40 %

     2. Odd numbers are those which don't divide with 2. So in this case it is 6 and 8.

The possible combinations are

1*4*3 (with 6) +  1*4*3(with 8) = 24

Total combinations are 5*4*3=60

(24/60)*100 = 40 %





3 0
3 years ago
A mass oscillating up and down on the bottom of a spring (assuming perfect elasticity and no friction or air resistance) can be
alexdok [17]

The motion of the mass as it moves on the bottom of the spring is a

repetitive motion.

  • \mathrm{The \ motion \ of \ the \ mass \ attached \ to \ the \ spring \ is \ }\displaystyle d = 6 \cdot sin\left(\frac{\pi}{2} \cdot t \right)

Reasons:

The general form of the equation of the simple harmonic motion of the

mass is <em>d</em> = a·sin(ω·t)

Where;

d = The distance of the mass from the rest position

a = The maximum displacement of the mass from the equilibrium position = 6 cm

ω = The frequency of rotation

t = The time of motion

ω = The frequency of rotation

\displaystyle \omega = \mathbf{\frac{2 \cdot \pi}{T}}

Where;

T = The time to complete one cycle (the period of oscillation) = 4 seconds

\displaystyle \omega = \frac{2 \cdot \pi}{4} = \frac{\pi}{2}

Combining the above values gives the modelling equation as follows;

\displaystyle d = 6 \cdot sin\left(\frac{\pi}{2} \cdot t \right)

Learn more here:

brainly.com/question/12904891

3 0
3 years ago
A water trough is 9 m long and has a cross-section in the shape of an isosceles trapezoid that is 20 cm wide at the bottom, 70 c
ella [17]

Answer:

dv = surface area * dh

so

dv/dt = surface area * dh/dt

width at surface = 40 + (80-40)(30/40)

= 40 + 30 = 70 cm = 0.70 m

so

surface area = 9 * .7 = 6.3 m^2

so

.3 m^3/min = 6.3 m^2 * dh/dt

and

dh/dt = .047 meters/min or 4.7 cm/min

Step-by-step explanation:

7 0
3 years ago
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