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Norma-Jean [14]
3 years ago
12

Please help i need it help

Mathematics
2 answers:
nikitadnepr [17]3 years ago
8 0
D because the top and the bottom are faces and the middle is a face

Pavel [41]3 years ago
5 0
Number 2 is F. 360.
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Write the quadratic equation whose roots are 3 and -1, and whose leading coefficient is 5.
Assoli18 [71]

Answer:

5x² - 10x - 15 = 0

Step-by-step explanation:

Given that the roots are x = 3 and x = - 1, then the factors are

(x - 3) and (x + 1) and the quadratic is the product of the factors, that is

f(x) = a(x - 3)(x + 1) ← a is a multiplier

Here a = 5, thus

f(x) = 5(x - 3)(x + 1) ← expand factors using FOIL

     = 5(x² - 2x - 3) ← distribute parenthesis by 5

     = 5x² - 10x - 15

Thus equation is

5x² - 10x - 15 = 0

6 0
3 years ago
Malik fulton's savings account has a principal of $1,640 with an apr of 6% simple interest. how much is in his account at the en
ella [17]
I=prt
I=1640*0.06*6/12=49.2
A=1640+49.2=1,689.2
8 0
3 years ago
Please HELP!!!!! Will give brainlyest!!! (Image attached.)
Andreas93 [3]

Answer:

18 because you use the middle section which explains how many rolls are needed

8 0
3 years ago
What is ∑n=16[4(−5)n−1] equal to?<br><br> Enter your answer in the box.
Cerrena [4.2K]

Step-by-step explanation:

Geometric Sequence formula for general term:

an = a1(r^n-1)

a1 = 4 × (-5)^1-1

a1 = 4

r = -5

Summation formula for geometric sequence :

Sn = a1 ( 1 - r^n / 1 - r )

...<em>take n from the top of the summation.</em>

= 4 ( 1 -(-5)^6 / 1 -(-5)

= -10416.

4 0
2 years ago
(7+5) + 4 x 13-2<br> can someone please explain how to do this
Klio2033 [76]
P E M D A S

Parentheses first: 
So, 12 + 4 x 13 - 2
      12 +  52 - 2
      64 - 2
     62
8 0
3 years ago
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