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otez555 [7]
3 years ago
12

PLEASE HELP WITH MATH

Mathematics
2 answers:
Phoenix [80]3 years ago
7 0

Answer:

Volume =  294.21 cubic meters

Step-by-step explanation:

lesantik [10]3 years ago
6 0

Volume is length x width x height.

Calculate the volume of each rectangle and add them together.

7.5 x 7.5 x 3.55 = 199.6875

7.5 x 3.55 x 3.55 = 94.51875

Volume = 94.51875 + 199.6875 = 294.21 cubic meters

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Do y’all the answer?
Strike441 [17]

Length = 12 m and width = \frac{7}{2} m.

Solution:

Let the width of the rectangle be w.

Length of the rectangle = 2w + 5

Area of the rectangle given = 42 m²

<em>Area of the rectangle = length × width</em>

length × width = 42

(2w + 5) × w = 42

2w^2+5w=42

Subtract 42 from both sides, we get

2w^2+5w-42=0

Using quadratic formula,

$x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}

Here, a=2, b=5, c=-42

$w=\frac{-5 \pm \sqrt{5^{2}-4 \cdot 2(-42)}}{2 \cdot 2}

$w=\frac{-5 \pm \sqrt{25+336}}{4}

$w=\frac{-5 \pm \sqrt{361}}{4}

$w=\frac{-5 \pm19}{4}

$w=\frac{-5+19}{4}, w=\frac{-5-19}{4}

$w=\frac{14}{4}, w=\frac{-24}{4}

$w=\frac{7}{2}, w=-6

Dimension cannot be in negative, so neglect w = –6.

Width of the rectangle = \frac{7}{2} m

$L=2(\frac{7}{2} )+5=12 \  m

Hence length = 12 m and width = \frac{7}{2} m.

4 0
4 years ago
Mr. Green’s lawnmower holds 600milliliters of gasoline in the tank. He just filled his 6-liter gas can at the station. How many
yanalaym [24]

Answer: 10 times

Step-by-step explanation:

1 litre = 1000 ml

6 litres = 6000 ml

Lawnmover holds 600 ml

So 6000 ml will fill

6000/600 = 10 times

5 0
3 years ago
What is the next step to solve 3x - 5 = 7
Dmitry [639]

Answer:

x = 4

Step-by-step explanation:

3 x 4 - 5 = 7

7 0
3 years ago
Read 2 more answers
Layla requires 2.25 pounds of cream cheese for a cake. She has 4 ounces of cream cheese. Cream cheese is available in the store
nikklg [1K]

Answer:

4 blocks of cream cheese

Step-by-step explanation:

there are 16 Ounces in a pound.

You have 4 ounces of cream cheese.  4 is 25% of 16 so we subtract .25 from the required amount which is 2.25.

NOW we need 2 pounds. well, each block is 8 ounces, and we need in total 32 ounces. 32/8=4 blocks

6 0
3 years ago
Which of the following methids would be the easiest to slove 3x^2-4x-2=0
lys-0071 [83]
Using the Quadratic Function, Such Means x = - b + or - the square root of - 4 a c over 2 a. 

After you do it you would get the answer :

Hoped I Helped, Have A Great Day :)

5 0
3 years ago
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