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Verizon [17]
3 years ago
8

What does b and c equal

Mathematics
1 answer:
exis [7]3 years ago
4 0
B=36

prisms give me the most difficulty
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When combining like terms what is 8m - 10m?
Bogdan [553]

Answer:

-2m

Step-by-step explanation:

Since the numbers will go below 0 we have to make it in negative numbers

8 0
3 years ago
Read 2 more answers
Fatima earned 6 more than twice as many dollars as Noora. If Fatima earned 40 QR, how much did Noora earn?
-Dominant- [34]
86.
Fatima has 40
Nora has “6 + (40 x 2)”
6+(80) = 86
4 0
3 years ago
Aluminum gold is 22% aluminum; the rest is gold. If aluminum gold bar contains 55g of aluminum, how many grams of gold does it c
Katarina [22]
195 grams 55/250=.22% 250-55=195g gold
7 0
3 years ago
The problem is in the picture
creativ13 [48]
It should be the first answer choice between those two
6 0
3 years ago
Twoooooooooooooooooooooooooooo
KatRina [158]

Answer:

n = 60.22

Step-by-step explanation:

Hello

To find Sn, we need to draw out equations for each a₇ and a₁₉

In an arithmetic progression,

Sn = a + (n-1)d

Where Sn = sum of the A.P

a = first term

d = common difference

a₇ = 32

32 = a + (7-1)d

32 = a + 6d ........equation (i)

a₁₉ = 140

140 = a + (19-1)d

140 = a + 18d .........equation (ii)

Solve equation (i) and (ii) simultaneously

From equation (i)

32 = a + 6d

Make a the subject of formula

a = 32 - 6d .....equation (iii)

Put equation (iii) into equation (ii)

140 = (32 - 6d) + 18d

140 = 32 - 6d + 18d

Collect like terms

140 - 32 = 12d

12d = 108

d = 108 / 12

d = 9

Put d = 9 in equation (i)

32 = a + 6(9)

32 = a + 54

a = 32 - 54

a = -22

When Sn = 511

Sn = a + (n - 1)d

Substitute and solve for n

511 = -22 + (n-1) × 9

511 = -22 + 9n - 9

511 = -31 + 9n

511 + 31 = 9n

542 = 9n

n = 542 / 9

n = 60.22

5 0
2 years ago
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