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Zina [86]
3 years ago
5

Efectuati! (-1)+2+(-3)+4+(-5)+...+(-19)+20 Ajutati-ma, va rog!

Mathematics
1 answer:
alexira [117]3 years ago
8 0

Answer:10

Step-by-step explanation:

2+4+6+.....+20- (1+3+5+7+...+19)=(2-1)+(4-3)+(6-5)+....+(20-19)=1+1+...+1 ( de 10  ori= 10 times)

=10

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Given below lease terms at the local dealership. What is the total cash due at signing? Terms length of = 36 months MSRP of the
Solnce55 [7]

Answer:

  B. $5005

Step-by-step explanation:

The amount due at signing will be the sum of ...

  • $4100 down payment
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  • $490 acquisition fee

These total $5005.

3 0
4 years ago
Find the values of x and y in the diagram.
olchik [2.2K]

Answer:

x = 3

y = 10

Step-by-step explanation:

In triangle KLN, measure of all angles are equal.

Therefore, it is an equilateral triangle.

All sides of an equilateral triangle are equal.

So,

y - 4 = 6

y = 6 + 4

y = 10

In triangle LMN, measures of angles M and N are equal, Therefore,

LM = LN

x + 3 = y - 4

x + 3 = 10 - 4

x + 3 = 6

x = 6 - 3

x = 3

5 0
3 years ago
(18x 5 + 6x 4 - 12x 3) ÷ 6x 2
KatRina [158]

Answer:

26 is the answer.

Step-by-step explanation:

=( (90 + 24 - 36) \div 6) \times 2 \\  = (78 \div 6) \times 2 \\  = 13 \times 2 \\  = 26

Do like the answer if you understand the explanation

5 0
4 years ago
HELP PLEASE!!!!!! I need help Urgent Help
gavmur [86]
This is just a porportion. So if 250 meters is 1 meter than: 250/1

And it wants to know the height. So we have the first number but not the second. So we'll use x: 212/x

Set them equal to each other 250/1=212/x

Cross multiply: 212=250x

Divide to find x: 212/250=x
x=212/250
x=0.848

So the height of the model, to the nearest 10th would be 0.8 meters.
5 0
3 years ago
please help asap. Brainliest to correct !!!
Karo-lina-s [1.5K]

Step-by-step explanation:

Let x = Rosalyn's hourly wage and we know that she earns this much up to 40 hrs per week. Beyond 40 hrs, her hourly wage increases to 2.5× the original rate so since she worked 8hrs past 40 hrs, we can write her total salary for the week as

40x + 8(2.5x) = \$1470

Solving for x, we find that

40x + 20x = \$1470 \Rightarrow 60x = \$1470

or

x = \$24.50/\text{hr}

6 0
3 years ago
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