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andrew-mc [135]
3 years ago
12

7/8, 3/10 whats the common denominator

Mathematics
2 answers:
Andreyy893 years ago
7 0
The common denominator would be (40) because 8 can go into 40 and 10 can go into 40
Ivahew [28]3 years ago
3 0
The common denominator is 40.

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I need to know what is 2x+4
morpeh [17]

Answer:

6

Step-by-step explanation:

hope this helps

3 0
3 years ago
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Will mark brainliest if right and you show your work!
Anna007 [38]

Answer:

(x - 5)(x + 8)

Step-by-step explanation:

Your equation is: x² + 3x - 40

1. Factor the quadratic

(a) Find two numbers that multiply to give -40 and add to give 3.

List the positive factors of 40: 1, 2, 4, 5, 8, 10, 20, 40

One of the numbers must be negative. Start with the numbers near the middle of the list.

By trial and error, you will find that +8 and -5 work:

-5 × 8 = -40 and -5+8 = 3

(b) Rewrite 3x as -5x + 8x

x² - 5x + 8x - 40

(c) Factor the first two and the last two terms

x(x - 5) + 8(x - 5)

(d) Separate the common factor

x² + 3x - 40  = (x - 5)(x + 8)

2. Using Desmos

You can plot the equation with Desmos.

You get a parabola with x-intercepts at x = -8 and x = 5.

These are the solutions to

x + 8 =0 and x - 5 = 0, so

x² + 3x - 40 =  (x+ 8)(x - 5)

6 0
3 years ago
Can someone help pls
lora16 [44]

I got 7.1 x 10^(-11) but it's been a few years so I could've done it wrong

5 0
3 years ago
The mathematical statement 4 C A means:
shtirl [24]
The mathematical statement 4 C A means that 4 is a subset of A. The "C" symbol is generally used in mathematical statements to mean that the former is a subset of the following statement.
4 0
3 years ago
Read 2 more answers
Help i need the answer idk what or how to do this
natta225 [31]
14^(7x) = 17^(-8-x)

Take the log of both sides:

7x*log 14 = -(8+x)*log 17, or 7x^log 14 = -8*log 17 - x*log 17.

Grouping the x terms, we get x(7*log 14 + log 17)= -8*log 17

Then:
              -8*log 17
x= --------------------------   (answer)
      7*log 14 + log 17
6 0
3 years ago
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