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katrin [286]
3 years ago
13

Write the following using algebraic notation, using the letter x for any unknown numbers:

Mathematics
1 answer:
makvit [3.9K]3 years ago
5 0
4(X-3)?? Because you do BIDMAS (BODMAS) and brackets are always first
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If f(x) = 4x2 + 1 and g(x) = x2 - 5, find (f + g)(x).
marissa [1.9K]

Answer:

simplafiyed answerd fx+gx

Step-by-step explanation:

=(f+g)(x)

=(f)(x)+(g)(x)

=fx+gx

6 0
3 years ago
How can you use a number line to model and compare positive and negative rational numbers
kifflom [539]
Hello There!

Well, as you know a number line is a line where you can place numbers with different spaces between them. It can be used to compare them in distance (the further apart they are on the line, the greater the difference between the two numbers)

Hope This Helps You!
Good Luck :) 

- Hannah ❤
6 0
4 years ago
Hi, what’s the area and formula?
tester [92]

Answer 40is area

Step-by-step explanation: half the base then mulitiply by the length thatw ould be the 5's

7 0
3 years ago
The function p(x) = 8x – 10 shows the profit, in dollars, for selling x books.
KengaRu [80]

Answer:

Every book is 8 dollars but you have to subtract 10, so like this:

Step-by-step explanation:

p(x) = 8x - 10 Lets say you sell 2 books

p(2) = 8(2) - 10

p(2) = 16 - 10

p(2) = 6  You would make 6 dollars.

3 0
3 years ago
5. The mapping f: xax² + bx + c defined on the set of real numbers is such that f(0) = -4,f(1)-1 and/(-1)= -5. Find a, b and c.
Marrrta [24]

It looks like you're saying

f(x) = ax^2 + bx + c

and you're asked to find a,b,c given f(0)=-4, f(1)=-1, and f(-1)=-5.

Evaluate f at the three given points:

x=0 \implies f(0) = \boxed{c = -4}

x=1 \implies f(1) = -1 = a + b + c \implies a+b = 3

x=-1 \implies f(-1) = -5 = a - b + c \implies a - b = -1

(a+b) + (a-b) = 3 + (-1) \implies 2a = 2 \implies \boxed{a=2}

a-b = -1 \implies \boxed{b=3}

and the mapping is f(x) = 2x^2 + 3x - 4.

5 0
2 years ago
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