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Aliun [14]
3 years ago
9

What multiplies to -4 and adds up to 7?

Mathematics
1 answer:
devlian [24]3 years ago
6 0
The two numbers are (7+ sqrt(65))/2 and (7- sqrt(65))/2

(7+ sqrt(65))/2+ (7- sqrt(65))/2= 7
(7+ sqrt(65))/2* (7- sqrt(65))/2)= -4.

Hope this helps~
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A sequence is defined recursively by f(1)=16 and f(n)= f(n-1)+2n. Find f(4)
lord [1]
Hi,

f(1)=16
f(2)=f(1)+2*2=16+4=20
f(3)=f(2)+2*3=20+6=26
f(4)=f(3)+2*4=26+8=34

8 0
3 years ago
Someone help with this please! Big points!
Nat2105 [25]

5\sqrt{72} =5\sqrt{36\cdot2}=5\sqrt{6^{2}\cdot2}=5 \cdot6\sqrt{2}   =30\sqrt{2}

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3 0
4 years ago
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Which of the following numbers is irrational? a fraction with numerator negative 15 and denominator 4, a fraction with numerator
Nataly_w [17]
I think it would be the last one. I hope this helped!
6 0
3 years ago
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Can someone help please?
Katarina [22]

Answer:

g = 6

Step-by-step explanation:

<em>To find the slope you do:</em>

m = change in y ÷ change in x or (y2 - y1) ÷ (x2 - x1)

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  • x2 = g, y2 = -3
  • m (the slope) = 2

<em>Sub in the values:</em>

2 = (-3 - -7) ÷ (g - 4) - we can simplify this

2 = (4) ÷ (g - 4)

4 divided by what gives us 2? 2. This means that g - 4 = 2, g = 2 + 4 which is 6:

g = 6

Hope this helps!

8 0
3 years ago
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While Tina is shopping, she finds a pair of pants she wants to buy that is priced at $35 but is on sale for 60% off. What expres
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Answer:

35x.40=14

Step-by-step explanation:

you multply $35 by .40 because that is the remaining cost from 60%

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