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saw5 [17]
3 years ago
15

Factorize 225-49

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​
Mathematics
2 answers:
erica [24]3 years ago
7 0

225-49x^2

-49x^2+225

=(7x+15)(-7x+15)

salantis [7]3 years ago
4 0

Answer:

(15+7x)(15-7x)

Step-by-step explanation:

225-49 x² = 15² - (7x)² = (15+7x)(15-7x)

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(a) Use a linear approximation to estimate f(0.9) and f(1.1). f(0.9) ≈ f(1.1) ≈ (b) Are your estimates in part (a) too large or
olasank [31]

Answer:

(Missing part of the question is attached)

L(x)=2x+3

Estimates are too large.

Step-by-step explanation:

Suppose the only information we know about the function is:

f(1)=5

where the graph of its derivative is shown in the attachment

<h3>(a)</h3>

If the function f\\ is differentiable at point x=1 , the tangent line to the graph of f at 1 is given by the equation:

y=f(1) +f'(1)(x-1)

So we call the linear function:

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We know the f(1)=5 as it is given in the question, and f'(1)=2 from the graph attached. Substitute in the equation of L(x).

L(x)=5+2(x-1)\\L(x)=5+2x-2\\L(x)=2x+3\\

<h3>(b)</h3>

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4 0
3 years ago
Evaluate each expression when a= - 4 and b= 3 ab
Andrews [41]

Answer:

-12

Step-by-step explanation:

<u>Step 1:  Substitute</u>

ab -> -4 for a and 3 for b

(-4) * (3)

<em>-12</em>

Answer:  -12

6 0
3 years ago
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romanna [79]

Answer:

110 feet

Step-by-step explanation:

The formula to find the area of a rectangular prism is A = 2 (wl + hl + hw)

Substitute the values:

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A = 2 (25 + 15 + 15)

A = 2 (55)

A = 110

6 0
3 years ago
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