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Sloan [31]
3 years ago
10

Add the two expressions.

Mathematics
2 answers:
Vladimir79 [104]3 years ago
8 0
Your answer will be 3.7w-2
Hoochie [10]3 years ago
7 0
 the answer is 3.7w-2 
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The length of a rectangle is 9 centimeters more than half
Sedaia [141]

Answer:

l = 16 cm

Step-by-step explanation:

Let's set the width of the rectangle as "w" and the length of the rectangle as "w/2 + 9".

The perimeter of a rectangle is calculated by adding up the value of all of its side lengths. Therefore, we can find the perimeter using 2l + 2w = P.

We can substitute 60 for P and w/2 + 9 for l.

  • 2(w/2 + 9) + 2w = 60
  • 2w/2 + 18 + 2w = 60
  • w + 18 + 2w = 60
  • 3w + 18 = 60
  • 3w = 42
  • w = 14

Substitute w = 14 into the equation for length l.

  • l = w/2 + 9
  • l = 14/2 + 9
  • l = 16

The length of the rectangle is 16 cm.

4 0
3 years ago
What is the name of a polygon that has four congruent sides and these angle measures 80,100,80,100
Black_prince [1.1K]

Quadrilateral. If you add the angles up on any quadrilateral, it equals 360 (it should always add to 360 for a quadrilateral)

8 0
3 years ago
Suppose you invest $10,000 at the age of 40, and agree to start receiving payments at the age of 50. At age 48, you decide you w
olchik [2.2K]
So out of the amount in your account you have $10,000.

You get charged a 10% fee if you withdraw before you are 59.5 (you did, you were 48).

So, they are going to charge a 10% fee of the $2,500.

10% of $2,500 is...

Your Answer:
$250

5 0
3 years ago
Seven more than 1/2 a number
Marina86 [1]

Answer: 7 + 1/2n

”more” means to add an additional value.

:)

6 0
3 years ago
Read 2 more answers
Help please i need it bad
evablogger [386]

Answer:

-13, -3

15, 2.6

Step-by-step explanation:

x, y are the numbers

x = 5y + 2

x×y = 39

(5y + 2)×y = 39

5y² + 2y - 39 = 0

the solution of a quadratic equation :

y = (-b ± sqrt(b² - 4ac))/2a

a = 5

b = 2

c = -39

y = (-2 ± sqrt(2² - 4×5×-39))/2×5 =

= (-2 ± sqrt(4 + 780))/10 =

= (-2 ± sqrt(784))/10 = (-2 ± 28)/10

y1 = (-2 + 28)/10 = 26/10 = 2.6

y2 = (-2 - 28)/10 = -30/10 = -3

x1 = 5×2.6 + 2 = 13 + 2 = 15

x2 = 5×-3 + 2 = -15 + 2 = -13

5 0
2 years ago
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