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3 years ago

How do I solve this I get so confused on fractions if you can solve can I have an explanation

Mathematics

1 answer:

Tom [10]3 years ago

8 0

Try to see if you can turn them into decimal to make is easier

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A bag of coins contains 2 quarters, 5 dimes, 3 nickels, and 4 pennies. If 2 coins are randomly chosen from the bag, one after th

MatroZZZ [7]

The probability is, B, 1/4.

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4 years ago

Two trains travel at right angles to each other after leaving the same train station at the same time. Two hours later they are

hjlf

Answer:1547.9 miles per hour

Step-by-step explanation:

Let the two trains leave in x direction and y direction

Velocity of train in x direction be v

therefore velocity of train in Y direction is v+29

because one train is 29 miles per hour slower than other.

Distance travel by train in x direction is(x) v(2)

Distance travel by train in y direction is(y) 2(v+29)

distance between them after 2 hours is 4420 miles

Now using pythagoras theorem

$x^2+y^2=\left ( 4420\right )^2$

$\left ( 2v\right )^2+\left ( 2\left ( v+29\right )\right )^2=\left ( 4420\right )$

on solving

$2v^2+58v-4881699=0$

v= $\frac{-58\pm \sqrt{\left ( 58 \right )^2+4\cdot 2\cdot4881699}}{2\cdot 2}$

v=1547.889 miles per hour

7 0

3 years ago

Alex y felipe son carpinteros. La materia prima necesaria para hacer un mueble grande les cuesta $500 y para un mueble pequeño $

aleksandrvk [35]

Answer:

Large furniture = 110 and Small furniture = 40

Step-by-step explanation:

Let, the number of pieces of large furniture = x and the number of small furniture = y.

As, it is given that Alex makes 150 pieces of the furniture.

We get the relation x + y = 150.

Moreover, the cost to make large furniture is $500 and the cost to make small furniture is $300.

Since, they have $57,000 as the total amount.

Thus, we get, 500x + 300y = 57000 i.e. 5x + 3y = 570.

Hence, we get the system of equations as,

5x + 3y = 570

x + y = 150

Now, we will solve these equations.

As, x + y = 150 ⇒ x = 150 - y

So, 5x + 3y = 570 ⇒ 5(150-y) + 3y = 570 ⇒ 650 - 5y + 3y = 570 ⇒ -2y = -80 ⇒ y = 40

Thus, x = 150 - 40 = 110 ⇒ x = 110

Hence, the number of large furniture can be made is 110 and the number of small furniture can be made is 40.

4 0

3 years ago

Choose the group of one-inch cubes that forms a rectangular prism that has the given dimensions. Then find the surface area of t

jeyben [28]

Answer:

Correct group: fourth image

Surface area = 32 in2

Step-by-step explanation:

The dimensions required is 2 x 3 x 2, so in one dimension we need 2 cubes, in a second dimension we need 3 cubes, and in the third dimension we need 3 cubes.

In the first image, we have a 2 x 3 x 3 prism.

In the second image (to the right of the first one), we have a 2 x 4 x 1 prism.

In the third image (below the first one), we have a 3 x 4 x 1 prism.

In the fourth image, we have a 2 x 3 x 2 prism, so this is the correct option.

The surface area os this prism is 2*(2*2) + 2*(2*3) + 2*(2*3) = 8 + 12 + 12 = 32 in2

6 0

4 years ago

I need help on Table of ratios

GaryK [48]

Answer:

me too

Step-by-step explanation:

7 0

3 years ago