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4 years ago

Plz help.. btw this is 7th grade math. (22 pts.)

Mathematics

1 answer:

belka [17]4 years ago

6 0

Answer:

He needs 4 1/3 buckets of fish.

Step-by-step explanation:

140 - 75 = 65 pounds of fish left to eat

15x = 65

x = 65 / 15

x = 4 1/3 buckets of fish left to eat

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HELP PLEASE!!! The area of a square is (16x2 − 8x + 1) square units. Determine the length of each side of the square by factorin

svetlana [45]

Answer:

Length of each side = (4x-1)

Step-by-step explanation:

You could use the Quadratic formula to solve this, but there is a bit of a logical/intuitive gap you have to jump over at the end to get the answer.

For a straightforward mathematical explanation of what the area is equal to, you need to complete the square. From there you acknowledge that a square's sides are equal to each other and then you'll have your lengths.

My work is in the attachment. Comment with any questions.

8 0

4 years ago

Read 2 more answers

The length of two complementary angles are x and 2x+12. Find the measures of the angles.

Shtirlitz [24]

There's no such thing as the "length"of an angle.
But we know what you're getting at.

You have said that the angles are complementary. If two angles are
complementary, then their sum is 90 degrees, so we can take your
two angles and write:

 x (one angle) plus (2x + 12) (the other one) = 90 degrees

 x + 2x + 12 = 90

Subtract 12 from each side: x + 2x = 78

Add the x's on the left side: 3x = 78

Divide each side by 3 : x = 26 degrees

One angle is 'x' = 26 degrees

The other one is (2x + 12) = 52+12 = 64 degrees

4 0

4 years ago

If b = 3/x + 3/y what is the value of 1/b

sashaice [31]

Answer:

xy / (3x + 3y)

Step-by-step explanation:

Find b first:

b = 3/x + 3/y
b = (3x + 3y)/xy

Find 1/b:

1/b = 1 : (3x + 3y)/xy
1/b = xy / (3x + 3y)

5 0

3 years ago

If there are 24 blue blocks and six of them are red what percentage of the blocks are red

Tems11 [23]

Answer:

20 % are red

Step-by-step explanation:

I THINK this is what you mean:

24 blue + 6 red = 30 blocks total

6 red / 30 total = 6/30 = .2 = 20 %

4 0

2 years ago

The size of a computer screen is measured along the diagonal. What is the approximate size, measured to the nearest inch, of a 1

SashulF [63]

According to the Pythagoras theorem, the size of the diagonal of computer screen is 15.95 inches.

Pythagoras theorem.

Pythagoras theorem states that "sum of the squares on the legs of a right triangle is equal to the square on the hypotenuse"

And the general form of Pythagoras theorem is,

c² = a² + b²

where

a and b refers the sides of the triangle

c refers the hypotenuse

Given,

The size of a computer screen is measured along the diagonal.

Here we need to find the size of the diagonal of the computer screen.

Here we consider the computer screen with the right angle triangle.

When we compare this, we have the side of the triangle are 12 inch and 10.5 inch.

So, we have apply the value to the formula, then we get the hypotenuse as,

c² = 12² + (10.5)²

c² = 144 + 110.25

c² = 254.25

c = √254.25

c = 15.95

Therefore, the size of the diagonal of the computer screen is 15.95 inches.

To know more about Pythagoras theorem here.

brainly.com/question/343682

#SPJ1

7 0

2 years ago