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never [62]
2 years ago
10

Evaluate the expression when g=4 and h= 7. 56 -9 h

Mathematics
1 answer:
pav-90 [236]2 years ago
6 0

Answer:

??????????

Step-by-step explanation:

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What is the only solution of 2x2 + 8x = x2 – 16
Blababa [14]
If you would like to solve the equation 2 * x^2 + 8 * x = x^2 - 16, you can calculate this using the following steps:

<span>2 * x^2 + 8 * x = x^2 - 16
</span><span>2 * x^2 - x^2 + 8 * x + 16 = 0
</span>x^2 + 8 * x + 16 = 0
(x + 4) * (x + 4) = 0
x = - 4

The correct result would be x = - 4.
6 0
2 years ago
Read 2 more answers
The exprnditure of 15 days of a man is as follows. calculate this average expenditure. 30,25,35,24,40,35,30,25,
atroni [7]

Answer:

$30.53

Step-by-step explanation:

Find total sum

30+25+35=90

90+24=114

114+40=154

154+35=189

…

You will get 458

458/15=30.53333

7 0
2 years ago
3x2 + 7x for x =2<br> Solve
kaheart [24]

Answer:

26

Step-by-step explanation:

3x^2 + 7x

when x = 2,

=> 3(2)^2 + 7(2)

=> 3(4) + 14

=> 12 + 14

=> 26

8 0
2 years ago
Read 2 more answers
If a3 = 11 and a5 = 7 and ak is the -th term of the sequence and ak = -9, then what is the value of k?
babymother [125]
An=a3+d

-9=11+-2

2n=26

n=13
6 0
3 years ago
the calorie cafe is known for their hotdogs and burgers. the number of calories in a burger is 220 more than the number of calor
meriva

Answer:

  • Number of calories in burger = 620 calories
  • Number of calories in hotdog = 400 calories

Step-by-step explanation:

Number of calories in burger = x

Number of calories in hotdog = y

y = x - 220

x + 2y = 1,420

Substitution:

x + 2 * (x - 220) = 1,420

x + 2x - 440 = 1,420

3x = 1,420 + 440

x = 1,860 / 3

x = 620 calories

y = x - 220

= 620 - 220

= 400 calories

6 0
2 years ago
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