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3 years ago

Television screen sizes are the diagonal length of the

Mathematics

2 answers:

VikaD [51]3 years ago

8 0

X/8 = 19/13 => x = (8*19)/13 = 11.69 inches long;

SCORPION-xisa [38]3 years ago

8 0

Answer:

not sure sorry

Step-by-step explanation:

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Question 13

natali 33 [55]

Answer:

y - 7 = (x + 5)

Step-by-step explanation:

Point-slope form: y - y1 = m(x - x1)

Slope(m) = 1

Point: (-5, 7) = (x1, y1)

To write the equation in point-slope form, we need to know the slope and one point. Since we were already given the values of the slope and one point, all we have to do is input those values into the equation:

y - y1 = m(x - x1)

y - 7 = 1(x - (-5))

y - 7 = (x + 5)

The equation in point-slope form is: y - 7 = (x + 5)

7 0

3 years ago

Show that the function of f(x) = a - x is its own inverse for all real numbers a

tatuchka [14]

f(x) = a - x

y = a - x

y + x = a - x + x

y + x = a

y + x - y = a - y

x = a - y

f-¹(x) = a - x

5 0

3 years ago

Complete the square for the expression, then factor the trinomial.

Nuetrik [128]

Answer:

Completing the square we get: $(x-2)^2-(2)^2$

and factoring the term we get: $x(x-4)$

Step-by-step explanation:

We need to complete the square for the expression $x^2-4x$

For completing the square the expression would be of form $a^2+2ab+b^2=(a+b)^2$

For given expression we have to add (2)^2 and subtract to make it complete the square.

$x^2-2(x)(2)+(2)^2-(2)^2\\(x-2)^2-(2)^2$

Now, we have to factor the polynomial using formula $(a)^2-(b)^2=(a-b)(a+b)$

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

Completing the square we get: $(x-2)^2-(2)^2$

and factoring the term we get: $x(x-4)$

5 0

3 years ago

Karl uses 7 cups of flour to make 2 loaves of bread.

svetoff [14.1K]

Simple just multiply 7 times 3, which will equal 21. Karl will need 21 cups of flower to make 6 loaves of bread. Hope I helped!

4 0

3 years ago

Read 2 more answers

Can you please help me

natima [27]

I think it’s the last answer.

4 0

2 years ago