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4 years ago

48 POINTS! PLEASE HELP! Show work please THANKS

Mathematics

2 answers:

Montano1993 [528]4 years ago

5 0

Answer:

Step-by-step explanation:

x times 3

CaHeK987 [17]4 years ago

4 0

Answer:

C multiply the first equation by 3

Step-by-step explanation:

3x-y =5

2x+3y = 10

We want to eliminate y

Since the first equation has a negative 1y and the second equation has 3y

I would multiply the first equation by 3 and then the y's cancel

3(3x-y =5)

9x -3y = 15

2x+3y = 10

------------------

11x = 25

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A clown has 63 blue balloons and 45 red balloons. The clown arranges the balloons into groups that have the same ratio of blue b

zysi [14]

First 45 / 10
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63 / 4.5 is 14
There will be 14 blue balloons for every 10 balloons.

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3 years ago

Solve the following<br>1/12 + 1/12

Helen [10]

Answer:

1/6

Step-by-step explanation:

5 0

3 years ago

To multiply 10 with 2/5<br> you should_________.

Sati [7]

Answer:

convert 2/5 to a decimal, which is 0.4

multiplying a value by 10 means you should move the decimal point one unit to the right

so 10 x 2/5 = 4

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

In a class of 300 students ,20% are girls how many boys are there?

emmainna [20.7K]

Answer:

240 students are boys

Step-by-step explanation:

20% of 300 = 60

300 - 60 = 240

3 0

3 years ago

Read 2 more answers

allsm [11]

Answer:

$\boxed{\text{15.8 cords}}$

Step-by-step explanation:

Step 1. Calculate the volume of the room

V = lwh = 5 yd × 5 yd × 3 yd = 75 yd³

Step 2. Convert cubic yards to cubic feet

3 ft = 1 yd

$V = \text{75 yd}^{3} \times \left(\dfrac{\text{3 ft}}{\text{1 yd}} \right)^{3} = \text{2025 ft}^{3}$

Step 3. Convert cubic feet to cords

128 ft³ = 1 cord

$V = \text{2025 ft}^{3} \times \dfrac{\text{1 cord}}{\text{ 128 ft}^{3}} = \textbf{15.8 cords}\\\\\text{You could fit }\boxed{\textbf{15.8 cords}} \text{ of wood into the room.}$

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3 years ago