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kap26 [50]
3 years ago
10

Write (2x - 5)2 as a trinomial.

Mathematics
2 answers:
solniwko [45]3 years ago
7 0

Answer:

4x^2-20x+25

Step-by-step explanation:

(2x-5)^{2} \\(2x)^2+2(2x)(-5)+(-5)^2\\4x^2-20x+25

sashaice [31]3 years ago
4 0

Answer:

4x^2-20x+25

Step-by-step explanation:

You can use the formula:

(u+v)^2=u^2+2uv+v^2.

(2x-5)^2=(2x)^2+2(2x)(-5)+(-5)^2

(2x-5)^2=4x^2-20x+25.

You could also use foil:

(2x-5)^2=(2x-5)(2x-5)

First: 2x(2x)=4x^2

Outer: 2x(-5)=-10x

Inner: -5(2x)=-10x

Last: -5(-5)=25

--------------------------Add.

4x^2-20x+25

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Solve the system of equations. 6x – 3y = 3 –2x + 6y = 14
Oxana [17]

Answer:

x=2; y=3

Step-by-step explanation:

You first add 3y to both sides. Divide both sides by 6. Then subsitute to get your answer.

6 0
3 years ago
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Smallville High School scored more than 30 points in their last football game entirely from safeties and field goals. (In
Reika [66]

Inequalities help us to compare two unequal expressions. The inequality for this scenario in standard form is 2x + 3y > 30.

<h3>What are inequalities?</h3>

Inequalities help us to compare two unequal expressions. Also, it helps us to compare the non-equal expressions so that an equation can be formed.

It is mostly denoted by the symbol <, >, ≤, and ≥.

Let the safety counts be represented by x, while the field goal count is represented by y.

Part A: The inequality for this scenario in standard form.

2x + 3y > 30

Part B: The inequality in slope-intercept form.

2x + 3y > 30

3y > 30 - 2x

y > 10 - (2/3)x

y < (2/3)x - 10

PartC: The inequality is represented below.

Learn more about Inequality:

brainly.com/question/19491153

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7 0
2 years ago
A 6-foot tall person standing with her back to the sun casts an 8-foot long shadow. To the nearest degree, what angle does the s
SVETLANKA909090 [29]
Tgα = 6/8 = 0,75
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8 0
3 years ago
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Find x. (Use pic for more info)
V125BC [204]

Answer:

x=75

Step-by-step explanation:

Hey There!

If you didn't know the exterior angle of a triangle is equal to the sum of the opposite interior angles of a triangle

So essentially what I'm saying is that

2x-5=70+x

step 1 add 5 to each side

-5+5 cancels out

70+5=75

now we have

2x=70+x

step 2 subtract x from each side

x-x cancels out

2x-x=x

we're left with

x=75

8 0
3 years ago
XYZ is a dilation of triangle ABC by a scale factor of 5. Which of the following proportions verified that triangle ABC and XYZ
Dima020 [189]

Answer:

C. AB/XY = AC/XZ

Step-by-step explanation:

Dilation:

A dilation is a transformation that produces an image that is the same shape as the original, but is a different size. The original figure either stretches or shrinks by a certain factor.

In the problem, the dilation is by a factor of 5 and we can see that ABC shrinks to form XYZ.

So, ABC and XYZ are similar triangles which means that the ratio of their corresponding sides will be equal:

AB/XY = AC/XZ = BC/YZ = 5

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3 years ago
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