2 years ago

Consider this expression:

Mathematics

2 answers:

Ivenika [448]2 years ago

8 0

Answer:

-5+-2=-7

3-4=-1

answer is -7x+1

Rashid [163]2 years ago

4 0

Answer:

-7

Step-by-step explanation:

3 – 4 = –1

–5x – 2x = x

–5x – 2x = -7x

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See attached picture, is there a way to enter equations or algebraic symbols?

coldgirl [10]

SOLUTIONS

Solve a given equations or algebraic symbols?

$\begin{gathered} f(x)=x^2+2x \\ g(x)=1-x^2 \end{gathered}$

(A)

$\begin{gathered} (f+g)(x)=(x^2+2x)+(1-x^2) \\ collect\text{ like terms} \\ x^2-x^2+2x+1 \\ (f+g)(x^)=2x+1 \end{gathered}$

(B)

$\begin{gathered} (f-g)(x)=(x^2+2x)-(1-x^2) \\ =x^2+2x-1+x^2 \\ =x^2+x^2+2x-1 \\ (f-g)(x)=2x^2+2x-1 \end{gathered}$

(C)

$\begin{gathered} fg(x)=(x^2+2x)(1-x^2) \\ =x^2-x^4+2x-2x^3 \\ fg(x)=-x^4-2x^3+x^2+2x \end{gathered}$

(D)

$\begin{gathered} \frac{f}{g}(x)=(x^2+2x)\div(1-x^2) \\ =\frac{x^2+2x}{1-x^2} \end{gathered}$

5 0

1 year ago

The number of unread emails in Bryan’s account is 100. This number grows by 15 unread emails a day. The function N(t)=100+15t re

miv72 [106K]

Answer:

205

Step-by-step explanation:

Given

N(t) = 100 + 15t is the equation of the relation.

We're asked to find N(7)

Taking a look at the question again and putting it side by side the equation

N(t)

N(7)

We can deduce that t = 7, and as such, solve for it in the equation given

N(7) = 100 + 15(7)

N(7) = 100 + 105

N(7) = 205

Therefore, the number of unread mails after 7 days will be 205

8 0

2 years ago

<img src="https://tex.z-dn.net/?f=x%5E%7B2%7D%20%20%2B%2036x%20%2B%20324%20%3D%20%28x%20%2B%20m%29%5E%7B2%7D%20" id="TexFormula1

nasty-shy [4]

Answer:

B. 18

Step-by-step explanation:

$x^{2} + 36x + 324 = (x + m)^{2}$

$(x+18)^{2}= (x + m)^{2}$

$\cancel x+18= \cancel x + m$

$18= m$

5 0

2 years ago

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svetoff [14.1K]

Range should be (-∞ , 10]

answer is C.

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3 years ago

Please help me with these 3 questions i will mark best answer brainliest!

Agata [3.3K]

I only know #1 which is 0.85

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3 years ago

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