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Anit [1.1K]
3 years ago
10

20 POINTS!!!!! (Voting Brainiest) Two Math Problems!!

Mathematics
2 answers:
borishaifa [10]3 years ago
8 0
Anwsers:
first one: Y = 14

second one, (4,-2)
Murljashka [212]3 years ago
7 0
Y= 14 

(4,-2)

hope that helps

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What is the value of x in the equation below?
sveta [45]

Answer: C

Step-by-step explanation:

1+2e^x+1=9

2e^x+1=9-1

e^x+1= 8/2

e^x+1 = 4

Here we can applicate the Ln:

ln e^x+1 = ln 4

Applicating the log property for exponent:

(x+1).ln e = ln 4

Ln e = 1, so:

x+1 = ln 4

x = ln 4-1

7 0
3 years ago
Jim has CDs that he is going to give away. He lets his best friend choose 2 of the 8 CDs. How many different groups of 2 CDs are
stira [4]
6 cds

WORK: 8 - 2 = 6 CD
4 0
3 years ago
What’s 9x9cause I’m having troubles
photoshop1234 [79]

Answer: The answer is 81.

5 0
3 years ago
Henry has a length of string that is 2850 cm long he needs some pieces that are 78 cm long for an art project what is the greate
agasfer [191]

Answer:

About 36.5 pieces

Step-by-step explanation:

divide 2850 by 78 and round to the nearest tenth. hope this helped

7 0
3 years ago
1. The Frosty Ice-Cream Shop sells sundaes for $2 and banana splits for $3. On a hot summer day, the shop sold 8 more sundaes th
worty [1.4K]
1) Sundaes - $2 ; Banana Splits - $3
3x + 2(x+8) = 156
3x + 2x + 16 = 156
5x = 156 - 16
5x = 140
x = 28 banana split        ; x + 8 = 28 + 8 = 36 sundaes

2) Palanzio's = 6.80 + 0.90x ; Guido's = 7.30 + 0.65x
6.80 + 0.90x = 7.30 + 0.65x
0.90x - 0.65x = 7.30 - 6.80
0.25x = 0.50
x = 2   number of toppings.

6.80 + 0.90x = 7.30 + 0.65x
6.80 + 0.90(2) = 7.30 + 0.65(2)
6.80 + 1.80 = 7.30 + 1.30
8.60 = 8.60

3) 6x - y = 4 ; y = 4x + 2
6x - (4x+2) = 4
6x - 4x - 2 = 4
2x = 4 + 2
2x = 6
x = 6/2
x = 3

y = 4x + 2
y = 4(3) + 2
y = 12 + 2
y = 14

6x - y = 4
6(3) - 14 = 4
18 - 14 = 4
4 = 4



6 0
3 years ago
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