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scoray [572]
3 years ago
15

No work needed!! Just answers, thank you! 25 points!!

Mathematics
1 answer:
Maurinko [17]3 years ago
3 0

Answer:

Step-by-step explanation:

S_{31} = 9 \cdot 31 + [-0.5 \cdot \frac{31(31-1)}{2}] = 46.5

S_{40} = 40 + [-3 \cdot \frac{40(40-1)}{2}] = -2300

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What is 5 less than the product of 5 and a number is 22 written out in an equation?
masha68 [24]
5y - 5= 22
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5(y)-5=22

Hope that helps!


6 0
3 years ago
-19/2 divided by 38/5
slavikrds [6]

Answer:

-1.25

Step-by-step explanation:

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8 0
3 years ago
Find the value of X. 40,x
Vilka [71]

Answer:

x = 70°

Step-by-step explanation:

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4 0
3 years ago
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Mrs. Rivera has bars of chocolate in a box. The total mass of bars of chocolate in the box is 3 kilograms. What is the mass in g
sergeinik [125]

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6 0
3 years ago
Show me how to work the equation 30-f+8f=30​
ELEN [110]

30-f+8f=30​

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Cross out 7 and 7, divide by 7. Becomes 1*1*f=f

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4 0
3 years ago
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