What is the LCD of 3/10 and -4/15??

Answers

Answer 1

Answer: i think the LCD is gonna be 30

Answer 2

Answer: the LCD is 30. The fractions would be 9/30 and -8/30

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On Mary's walk she covered the 3-mile distance to the park in one hour. However, the return trip took her one and a half hours. What was her average speed for the round trip?
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Bob and Cheryl are taking a road trip that is 188.3 miles. Bob drove 5/7 of the totalDistance. How many miles did Bob drive?

Answers

the total distance of the road trip is 188.3 miles

Both Bob and Cheryl took turns and drove

Bob has driven 5/7th of the total distance

distance Bob has driven - $(5)/(7)of188.3miles$

when the 'of' function is used we have to multiply

$(5)/(7)*188.3 = (5*188.3)/(7) = 134.5$

therefore distance Bob drove is 134.5 miles

$x-\ distance\ drove\ by\ Bob\n\ny-\ distance\ drove\ by\ Cheryl\n\nx=(5)/(7)*188,3\ny=188,3-x=188,3-(5)/(7)*188,3=(2)/(7)*188,3\n\ny=53,8\ miles\n\nx=134,5\ miles\n\nBob\ drove\ 134,5\ miles.$

3. IF ON = 5x - 7, LM = 4x +4, NM = x - 7, and OL = 3y – 4, find the values of x and y for which LMNO mustbe a parallelogram. The diagram is not to scale.
N CH-7=5X

Answers

Answer:

x = 11 and $y = (8)/(3)$

Step-by-step explanation:

If LMNO is a parallelogram then it's opposite sides will be equal.

So, LM = ON

⇒ 4x + 4 = 5x - 7

⇒ x = 11

Now, MN = OL

⇒ x - 7 = 3y - 4

⇒ 11 - 7 = 3y - 4 {Since we already have, x = 11}

⇒ $y = (8)/(3)$ (Answer)

Hungary Hank uses 7 scrambled eggs to make 4 breakfast burritos. How many breakfast burritos does he make with 21 scrambled eggs?

Answers

12

7 x 3 = 21
4 x 3 = 12

4x3 is 12 so the the answer is 12

A toy rocket was launched from the ground. The function f(x) = -16x² + 160x shows the height of the rocket f(x), in feet, from the ground at time x seconds.What is the axis of symmetry of the graph of f(x), and what does it represent?
--
A) x = 10; it takes 10 seconds to reach the maximum height and 10 seconds to fall back to the ground
B) x = 10; it takes 10 seconds to reach the maximum height and 20 seconds to fall back to the ground
C) x = 5; it takes 5 seconds to reach the maximum height and 10 seconds to fall back to the ground
D) x = 5; it takes 5 seconds to reach the maximum height and 5 seconds to fall back to the ground
--
I was absent for a week and we only touched up on this one day when I got back.
I really appreciate any and all help given.
Ranking Brianliest to the one who can give step by step instruction included in their answer.

Answers

The answer is D. All you have to do is graph the equation, and you will have the vertex and the roots. By the way, you can rule out B and C because those two do not follow the rules of a quadratic. Also, A and B have the wrong axis of symmetry, because the rocket lands after 10 seconds.

a rectangular tank is filled with water from a tap which flows into the tank at 6.5 litre per minute . How long will it take to fill up 2/3 of the tank ?

Answers

If the tank is the size of a swimming pool, then it will take longer than an aquarium. The dimensions of the tank are important to know.

Cards numbered 1 through 30 are placed in a bag and shuffled. One card is chosen at random. What is the probability of randomly selecting a number less than or equal to 5, or a multiple of 7?A.1/15

B.3/10

C.2/15

D.1/30

Answers

B. 3/10 I believe, to find it you just count all of the numbers: 1,2,3,4,5,7,14,21,28
there are 9 numbers so 9/30 = .3

Hope this is right :)

B is the answer because of the probability of the numbers

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