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SCORPION-xisa [38]
4 years ago
7

7( -12x -3) +10 (6x +7)

Mathematics
2 answers:
zalisa [80]4 years ago
4 0
=-84x-21+60x+70
=-24x+49
nataly862011 [7]4 years ago
3 0

Hey There!

Use the principles of PEMDAS and the distributive property in order to solve this problem.

P- Parentheses

E- Exponent

M- Multiplication

D- Division

A- Addition

S- Subtraction

Let's begin to solve.

7 * -12x = -84x

7 * -3 = -21

10 * 6= 60x

10 * 7= 70

-84x - 21 + 60x + 70

Combine like terms

-84x + 60 = -24x

70 - 21 = 49

Therefore, the answer would be -24x + 49.

Thank you for posting your question with Brainly!

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Answer:

a) $14.37 sales tax

b) $25.13 left on gift card

Step-by-step explanation:

Purchases: 78.50 + 32.00 = 110.50

Sales tax: 13%:

1% of 110.50 = 1.1050

1.1050 x 13 = 14.365

rounded to 2 decimal places: $14.37

Total cost: 110.50 + 14.37 = $124.87

Gift card: 150.00 - 124.87 = 25.13

3 0
3 years ago
A ECD is
FinnZ [79.3K]

Answer: SAS

Step-by-step explanation:

The Side Angle Side (SAS) postulates that if two sides and the included angle of one triangle are congruent to two sides and the included angle of another triangle, then these two triangles are congruent

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3 years ago
Pierre deposits $9,000 in a certificate of deposit that pays 1.4% interest, compounded semi-annually.
Elenna [48]

9514 1404 393

Answer:

  • interest: $63
  • balance: $9063

Step-by-step explanation:

After 6 months, the interest accrued is ...

  I = Prt

  I = $9000·0.014·(6/12) = $63

This is added to the principal to get the balance at that point in time.

  $9000 +63 = $9063

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The interest earned in the first 6 months is $63. The balance after 6 months is $9063.

_____

The compound interest formula will give you the same result for one compounding period. It tells you the balance is ...

  A = P(1 +r/n)^(nt)

where n is the number of times interest is compounded in a year (2), and t is the number of years (1/2). For annual rate r = 1.4%, this is ...

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5 0
3 years ago
The sum of the measures of the angles of a triangle is 180°. The middle-sized angle measures 3° more than 2 times the smallest a
Anit [1.1K]

Answer:

13° , 29° , 138°

Step-by-step explanation:

let x be the smallest angle , then

2x + 3 is the middle angle and

2x + 3 + 109 is the largest angle

summing the 3 angles and equating to 180

x + 2x + 3 + 2x + 3 + 109 = 180 , that is

5x + 115 = 180 ( subtract 115 from 180 )

5x = 65 ( divide both sides by 5

x = 13

2x + 3 = 2(13) + 3 = 26 + 3 = 29

2x + 3 + 109 = 29 + 109 = 138

the 3 angles are 13° , 29° , 138°

6 0
2 years ago
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