How do I do this?
I really need help and I don’t understand

Answer:

i think its D but not really sure

Step-by-step explanation:

Answer:

  maybe

Step-by-step explanation:

Dora is apparently assuming the dimensions are integers. In that case she is correct.

If the dimensions are unconstrained, the perimeter will be largest when a pair of opposite sides will be the smallest measure allowed.

For some perimeter P and side length x, the area is ...

  A = x(P/2 -x)

Conversely, the perimeter for a given area is ...

  P = 2(A/x +x)

This gets very large when x gets very small, so Dora is correct in saying that the side lengths that are as small as they can be will result in the largest perimeter. We have no way of telling if her assumption of integer side lengths is appropriate. If it is not, her statement makes no sense.

Solution,

= 3x^2+5x-6-x^2+3x+9

= 3x^2-x^2+5x+3x-6+9

=2x^2+8x+3

2. x^2-10x-24

= x^2-(12-2)x-24

= x^2-12x+2x-24

= x(x-12)+2(x-12)

=(x-12)(X+2)

3. 3x^2-9x

take the common,

= 3x(x-3)

Answer:

she can serve 12 guest with her cakes

Step-by-step explanation:

if 1 cake is cut into 4 peices

3 cakes will be cut into 12

Answer:

Approximately 87 minutes

Step-by-step explanation:

So first see how much of the reading 41 minutes is. It is 47%.

So now to find out how much 100% is, first find out how much 1% is.

Just divide by 47.

1% = [tex]\frac{41}{47}[/tex]

And then multiply by 100 to get 100%

[tex]\frac{4100}{47}[/tex]

That is 87.2340425532

Which is 87

Answer:

TSU is the correct for answer

Another way to name ∠UST is ∠TSU.

Angles are the figure formed by the intersection of two lines or rays by sharing a common point. This point is called the vertex of the angle.

Angles are usually measured in degrees or radians.

The angle mentioned in the figure is at the point S.

This angle is the smaller angle formed at the point S.

An angle can be represented in two ways, from left to right or from right to left.

Suppose, an angle is ∠ABC.

We can represent this as ∠CBA.

So, the angle represented is ∠TSU.

Hence the angle is ∠TSU.

Learn more about Angles here :

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Answer:

C

Step-by-step explanation:

They are opposite angles and opposite angles are the same amount.

The answer is C because they are on the outside of the triangle.

Outside = Exterior

Answer:

Similar-AA

Step-by-step explanation:

If you know 2 angles of the triangle you automatically know the third. If all the corresponding angles of two triangles are the same, they are similar.

(p.s. This sign ~ means similar)

Answer:

55 YRS

Step-by-step explanation:

T=INTEREST X 100%/PRINCIPAL X RATE

T=4400X100%=440000%/4000 X 2%

T=440000%/8000%

T=55 YRS

Answer:

False

Step-by-step explanation:

This is not a function

The same x value goes to 2 different y values

5 goes to both 2 and 1

This is not a 1 to 1 correspondence

Answer:

False

Step-by-step explanation:

A function has only one input for every output. 5 has two

Answer:

Step-by-step explanation:

2x^2 = 37

x^2=37/2

x^2=18.5

[tex]\sqrt{x^{2} }[/tex]=[tex]\sqrt{18.5}[/tex]

x=4.301

Answer:

=4.75x^100000000000

Answer:

2

Step-by-step explanation:

The scale factor of the dilation of triangle ABC into the triangle A^ prime B^ prime C^ prime is 2.

Scale factor is the factor which is used to enlarge or smaller the original figure. Scale factor is the ratio of representation measurement of the figure to the original figures.

Triangle A^ prime B^ prime C^ prime is the image of triangle ABC under a dilation.

The height of the triangle ABC is 5 units (blocks) and the height of the dilated triangle A'B'C' is 10 units. Thus, the scale factor is,

[tex]k=\dfrac{10}{5}\\k=2[/tex]

Hence, the scale factor of the dilation of triangle ABC into the triangle A^ prime B^ prime C^ prime is 2.

Learn more about the scale factor here;

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poop h34huehu 3uddej ewdujdwqijdwejj

Answer:

Domain is x ∈ R

Step-by-step explanation:

There weren't any options given, but for f(x) = 2x + 15, the domain is x ∈ R.

This is because the graph is a linear function, which exists for all values of x. You can express this in lots of different ways, but R (all reals) is the conventional way to do it.

In case you don't know what a domain is: it is a set of numbers that the x-values of an equation can fit into.

Example:

f(x) = [tex]x^{2}[/tex] -> x ∈ R

This is because, if you draw a quadratic graph, you can see that the values of x are neverending.

Hope this helped : )

Answer: ;otherwise, your eyes will become very irritated from the chlorine.

Step-by-step explanation: I took the test

Answer:

the answer above is right i jus took the test

Step-by-step explanation:

Answer:

question 1) Add 7/4 to both sides. question 2) Divide 4 by both sides. question 3) x=15

Step-by-step explanation:

Answer:

Gasoline price is $2.80 per gallon in August.

The price increased by 15% in September,

dropped 5% in October

and dropped another 10% in November.

The gasoline price in November would be:

2.8 x (1 + 15/100) x (1 - 5/100) x ( 1 - 10/100) = 2.7531

Hope this helps!

:)

Answer:

$2.7531

Step-by-step explanation:

Please refer to the picture above.

When solving such procedural questions, you should do it step by step. Diagrams like tables can help you visualise the process to avoid making mistakes.

Answer:

5  5/8

Step-by-step explanation:

6 3/8 - 6/8

The denominators are the same, so we borrow from the 6

Borrw 1 in the form 8/8

6 + 8/8 +3/8 - 6/8

5 11/8 - 6/8

5  5/8

Answer:

C

Step-by-step explanation:

Please refer to the picture above.

Assuming a =

[tex] \sqrt[5]{x}^{2}y } [/tex]

You can visualise the solution easily.

Answer:

4x`2 + 13x + 8

Step-by-step explanation:

the ` is the squared

Hello!

[tex]\boxed{ \bf 1.~l~=~9.25~cm;~A~=~55.5~cm^2~matches~with~the~last~option~w~=~6~cm.}[/tex]

[tex]\boxed{ \bf 2.~l~=~7.5~cm;~A~=~48.75~cm^2~matches~with~the~second~option~w~=~6.5~cm.}[/tex]

[tex]\boxed{ \bf 3.~l~=~5~cm;~A~=~44~cm^2~matches~with~the~third~option~w~=~8.8~cm.}[/tex]

[tex]\boxed{ \bf 4.~l~=~5~cm;~A~=~31.25~cm^2~matches~with~the~first~option~w~=~6.25~cm.}[/tex]

We already know that the formula for area of a rectangle is A = l × w.

Notice how the width and the length are being multiplied to find the area.

Well, to find the width, we must do the opposite of multiplication, which is division.

Since we already have the length, all we have to do is divide the area by the length for each of the questions.

1:

A = l × w

55.5 = 9.25 × w

[tex]\frac{55.5}{9.25}[/tex] = 6

2:

A = l × w

48.75 = 7.5 × w

[tex]\frac{48.75}{7.5}[/tex] = 6.5

3:

A = l × w

44 = 5 × w

[tex]\frac{44}{5}[/tex] = 8.8

4:

A = l × w

31.25 = 5 × w

[tex]\frac{31.25}{5}[/tex] = 6.25

Answer:

According to triangle theorems, we know that the interior angles of a triangle equals 180 degrees. Since we know that angle A and angle B are 55 and 30 degrees, all we need to do is add them up and subtract it from 180 degrees to find out the measure of angle C.

55 + 30 = 85 degrees

180 degrees - 85 degrees = 95 degrees (this is the measure for angle C)

The m∠C in the triangle is 95° as the other two angles are 55° and 30°

A triangle is a three-sided closed-plane figure formed by joining three noncolinear points. Based on the side property triangles are of three types they are Equilateral triangle, Scalene triangle, and Isosceles triangle.

We know the sum of all the interior angles in a triangle is 180°.

Given, In a triangle, m∠A is 55° and m∠B 30°.

Therefore m∠C = 180° - 55° - 30°.

m∠C = 95°.

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Answer: (4,-3) B

Step-by-step explanation:

Answer:

(4, –3) or B

Step-by-step explanation:

i just took the test!

Answer:

ellis

Step-by-step explanation:

The student who graphed a linear function with a y-intercept at -4 is Ellis.

Option C is the correct answer.

We have,

The student who graphed a linear function with a y-intercept at -4 is Ellis.

Looking at the given information, Ellis's line goes through points (0, -4) and (2, 0).

The y-coordinate of the y-intercept is -4, which matches the requirement.

Therefore, Ellis is the student who graphed a linear function with a y-intercept at -4.

Thus,

The student who graphed a linear function with a y-intercept at -4 is Ellis.

Learn more about coordinates here:

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Answer:

س ل = 4.3

Step-by-step explanation:

هتسرم وتعين بالمسطرة ^_^

Answer:

4

Step-by-step explanation: