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3 years ago

Helppppppp pleaseeeeee

Mathematics

1 answer:

Dahasolnce [82]3 years ago

4 0

Step-by-step explanation:

The area, A, in square yards, of a rectangular garden, is given by the function.

$A(x)=-2x^2+30x$

We know that, the area of the rectangle is given by :

$A=l\times b$

Where l is length and b is breadth

$A=-2x^2+30x\\\\A=2x\times (-x+15)$

Length = 2x

Breadth = (15-x)

For zeoes,

$2x\times (-x+15)=0\\\\x=15$

Length = 15 yards

Breadth = (15-15) = 0 yards

Hence, this is the required solution.

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Carla is baking brownies for the school bake sale. The batter fills a pan that is 20 cm long by 16 cm wide by 4.4 cm deep.Then,

barxatty [35]

The volume of the first pan is (length x width x depth) =

 (20cm x 16cm x 4.4cm) = 1408 cm³ .

The batter fills it, so we know there is 1408 cm³ of batter.

Somehow, Carla manages to transfer every drop and smidgen of batter to
the new pan, leaving not a single drip of it in the first pan. So we know that
there is 1408 cm³ of batter in the new pan. It will spread out to fill the whole
length and width of the new pan, and we're to calculate how deep it will be.

 (length x width x depth) = 1408 cm³

 (20cm x 20cm) x (depth) = 1408 cm³

(400 cm²) x (depth) = 1408 cm³

Divide each side by 400cm² : depth = 1408 cm³ / 400cm²

 = 3.52 cm

Since the new pan is 5 cm deep, this works. The batter doesn't
overfill it and glurb out over the top and all over the counter.

The question asked how far the batter is from the top of the pan.

The pan is 5 cm deep.
The batter is 3.52cm deep.

The batter comes up to (5 - 3.52) = 1.48 cm from the top of the pan.

Rounded to the nearest tenth of a cm, that's 1.5 cm from the top.

5 0

3 years ago

A hungry math teacher ate 3 steak tacos, 2 chicken tacos, and 5 potato tacos. What is the ratio of chicken tacos to TOTAL tacos

natali 33 [55]

Answer:

the ratio is 1:5 or 20%

Step-by-step explanation:

3(steak)+2(chicken) + 5(potato) = 10(all tacos)

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3 years ago

Read 2 more answers

A school band found they could arrange themselves in rows of 6, 7, or 8 with no one left over. What is the minimum number of stu

mylen [45]

Answer:

168 is the answer if i m not wrong.I took the LCM.

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3 years ago

In the decimal number .98703, what place value does the 0 holdd

denpristay [2]

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3 years ago

Consider the graph with four lines below. On a coordinate plane, line a has a positive slope and goes through points (negative 1

yan [13]

Answer:

The correct option is;

line a and line b

Step-by-step explanation:

Lina a passes through (-1, 0) and (1, 2)

Line b passes through (2, 2) and (-1, -1)

Line c passes through (0, 3) and (1, 0)

Line d passes through y = 1

An equation that has no solution

By examination, from the plot of the coordinates using an online tool, the system that would have no solution is the system of line a and line b because they are parallel lines and cannot meet or have a point where there is a common solution, therefore, there are no solutions when the equations of the two lines are combined in one equation

Slope of line a = -2/-2 = 1

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The slopes of lines a and b are equal, therefore, line a and line b are parallel.

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3 years ago