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OLga [1]
3 years ago
15

PLEASE HELP!!! WORTH 3 GRADES

Mathematics
2 answers:
Rufina [12.5K]3 years ago
6 0
The correct answer should be D
Marizza181 [45]3 years ago
5 0
Actually , the correct answer is A.
If u want to know why, just comment and I'll tell u.

Hope this helps!!
Please make brainliest to help me out!!
Thanks!!
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Which equation represents exponential decay?
Katarina [22]

Answer:

D, because for every x, the 3 slowly become slower. IF the thing that is being taken to the power of x is less than one it is a decay

6 0
3 years ago
School pictures cost $4.25 for an 8 by 10 print. They cost $2.35 for a 5 by 7 print and 60 cents for wallet size print. What is
Sergio [31]

Answer:

$8.30

Step-by-step explanation:

2.35 x2= 4.7

6 (0.60) = 3.6

4.7 + 3.6 = 8.3

7 0
3 years ago
Help me please!! This is timed and I’m stuck
zhuklara [117]

Let's solve

\\ \sf\longmapsto 2x^2+7x-15=0

\\ \sf\longmapsto x=\dfrac{-7\pm\sqrt{7^2-4(2)(-15)}}{2(2)}

\\ \sf\longmapsto x=\dfrac{-7\pm\sqrt{169}}{4}

\\ \sf\longmapsto x=\dfrac{-7\pm13}{4}

\\ \sf\longmapsto x=\dfrac{-7+13}{4}\:or \:\dfrac{-7-13}{4}

\\ \sf\longmapsto x=\dfrac{6}{4}\:or\:\dfrac{-20}{4}

\\ \sf\longmapsto x=\dfrac{3}{2}\:or -5

Subtract

\\ \sf\longmapsto 3/2-(-5)=3/2+5=13/2

Option B

6 0
3 years ago
Read 2 more answers
What is the value of x?
Dafna1 [17]

Answer:

28


Step-by-step explanation:

We use the concept of similarity to find the value of X.

Δ APR ≡  ΔCDR

∴ AR/CR = PR/DR

   (10+x)/x = (15+42)/42

42(10+x) = 57x

420 + 42x = 57x

57x - 42x = 420

15x = 420

x = 420/15

  = 28

3 0
3 years ago
Write a function rule that gives the total cost c(p) of p pounds of sugar if each pound costs $0.59.
Dafna11 [192]

Answer:

D

hope this helps

Step-by-step explanation:


8 0
3 years ago
Read 2 more answers
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