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3 years ago

I need help!! Please

Mathematics

1 answer:

Andre45 [30]3 years ago

8 0

I don’t know sorry mannnn

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Given PQR ~ STR, find QT

Dafna11 [192]

30/36=38/(36+X)
X=9.6

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3 years ago

HELP DUE TODAY!!<br>Approximate and exact values

sweet [91]

Answer:

1. is 1.73

3. is 3.14 (22/7)

4. is 3.14/2

5. is 1.41

6. is 2.71828

7. is 3.14 /4

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3 years ago

Explain the relationship between the polynomial identities: x^2 − 1 = (x +1)(x − 1) and x^2 − a^2 =(x − a)(x +a).

Bess [88]

Answer:

So these two equation can be related by identity $x^2-a^2=(x+a)(x-a)$

Step-by-step explanation:

We have given equation $x^2-1=(x+1)(x-1)$

And $x^2-a^2=(x+a)(x-a)$

We know the algebraic identity $a^2-b^2=(a+b)(a-b)$

From this identity

$x^2-1$ can be written as (x+1) (x-1)

And using same identity $x^2-a^2$ can be written as $(x-a)(x-b)$

So these two equation can be related by identity $x^2-a^2=(x+a)(x-a)$

5 0

3 years ago

Two functions are defined as shown. f(x) =-1/2 x – 2 g(x) = –1 Which graph shows the input value for which f(x) = g(x)?

Natalka [10]

Answer:

See attachment.

Step-by-step explanation:

The given functions are:

$f(x) = - \frac{1}{2}x - 2$

and g(x)=-1

To find the x-value of the point of intersection of the two functions, we equate the two functions and solve for x.

$- \frac{1}{2}x - 2 = -1$

$x + 4 = 2$

$x = 2 - 4 = - 2$

The graph that shows the input value for which f(x)=g(x) is the graph which shows the point of intersection of f(x) and g(x) to be at x=-2.

4 0

3 years ago

Read 2 more answers

The profit function, y, for selling x shirts is given by the equation y=-0.1x^2+10x. What is the maximum value of the profit, y?

Alex73 [517]

2 ways
1 calcluls
2. algebra

calculus, just take the deritivive and find wher it is 0
y=-0.2x+10
at x=50
sub 50 for x in original
y=250

algebra
for
y=a(x-h)²+k
(h,k) is vertex
k is maximum value

complete the square
y=(-0.1x²+10x)
y=-0.1(x²-100x)
take 1/2 of -100 and square it and add negative and positive inside
-100/2=-50, (-50)²=2500
y=-0.1(x²-100x+2500-2500)
factor perfect square
y=-0.1((x-50)²-2500)
exand
y=-0.1(x-50)²+250

vertex at (50,250)
producing 50 units yeilds a sale price of $250

max price is $250

8 0

3 years ago