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3 years ago

Could someone assist me with this?

Mathematics

1 answer:

Blababa [14]3 years ago

6 0

Answer:

Step-by-step explanation:

Formula for Area of a parallelogram: A = bh

So multiply the base (25cm) by the height (16cm) to get 400cm^2.

Volume formula l x w x h

Multiply the length of the pool (20ft) by the width (15ft) by the height (6ft) to get 1,800ft^2

Formula for Area of a trapezoid A= a+b/2 * h

Where a is (12.6in), b is (15in), and h is (3.4in) just plug in the numbers into the formula to get 46.92in^2

Same thing as number one, use the Area of a parallelogram formula A = bh

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Water expands when it freezes. Ice is less dense than water so it floats.If the increase in volume is 4% what volume of water wi

SpyIntel [72]

Answer:

Volume of water would be 12,200,000 m^3

Step-by-step explanation:

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3 years ago

The number of students who chose lunch was 5 more than the number of students who chose breakfast. Write a system of linear equa

Papessa [141]

Answer:

The system of linear equations are $y=5+x$ and $x+y=25$

Step-by-step explanation:

Given : The number of students who chose lunch was 5 more than the number of students who chose breakfast. Let x represent the number of students who chose breakfast and y represent the number of students who chose lunch.

(50 students picked, 25 picked dinner the rest picked lunch and breakfast)

To find : Write a system of linear equations that represents the numbers of students who chose breakfast and lunch ?

Solution :

The number of students who chose breakfast be 'x'

The number of students who chose lunch be 'y'.

The number of students who chose lunch was 5 more than the number of students who chose breakfast.

i.e. $y=5+x$

Now, Total student were 50 and 25 picked dinner the rest picked lunch and breakfast i.e. 25.

So, $x+y=25$

Therefore, the system of linear equations are $y=5+x$ and $x+y=25$

4 0

3 years ago

2 345 000 000 in scientific notation

grigory [225]

2.345 * 10^9 . Hope this helps

6 0

3 years ago

A salt mixture has 8 parts water and 2 parts salt. Suppose one part of each is added. What is the new ratio of salt

Ivanshal [37]

Answer:

3 to 9

Step-by-step explanation:

3 0

3 years ago

What are the solution(s) of x2-4-0?

Elanso [62]

Answer:

For $x^2 - 4 = 0$ , x = 2, or x = - 2.

Step-by-step explanation:

Here, the given expression is :

$x^2 - 4 = 0$

Now, using the ALGEBRAIC IDENTITY:

$a^2 - b^2 = (a-b)(a+b)$

Comparing this with the above expression, we get

$x^2 - 4 = 0 = x^2 - (2)^2 = 0\\\implies (x-2)(x+2) = 0$

⇒Either (x-2) = 0 , or ( x + 2) = 0

So, if ( x- 2) = 0 ⇒ x = 2

and if ( x + 2) = 0 ⇒ x = -2

Hence, for $x^2 - 4 = 0$ , x = 2, or x = - 2.

4 0

3 years ago

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