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balu736 [363]
3 years ago
13

Meg collects coins from other countries. After her mother gives her 8 coins, Meg has a total of 27 coins in her collection. How

many coins did she start with?
Mathematics
2 answers:
Katarina [22]3 years ago
5 0
Meg started with 19 coins.
Do 27-8 to get 19. 
Gekata [30.6K]3 years ago
3 0
The correct answer is 19 coins
You take 27-8 which equal 19. Hope this helps!
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Write in slope intercept form, then convert to standard form Slope=1, y-intercept=-3​
Viktor [21]

Slope = 1

y-intercept = -3, which can be expressed as (0,-3).

y - y_1 = m(x - x_1)

y -(-3) = 1(x - 0)

y + 3 = x

The slope-intercept form is

y = x - 3.

The standard form is Ax + By = C.

y = x - 3

3 = x - y

Done.

6 0
3 years ago
Complete the work to find the dimensions of the rectangle. x(x – 3) = 10 x2 – 3x = 10 x2 – 3x – 10 = 10 – 10 (x + 2)(x – 5) = 0
Norma-Jean [14]

Answer:

Length =5

Width = 2

Step-by-step explanation:

Given

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x(x-3) =10

See comment for missing part of the question

Required

Complete the expression to determine the dimension of a rectangle

We have:

x(x-3) =10

Open bracket

x^2 -3x = 10

Equate to 0

x^2 -3x - 10 =0

Expand

x^2 + 2x - 5x - 10 = 0

Factorize

x(x + 2) - 5(x + 2) = 0

Factor out x + 2

(x  - 5)(x + 2) = 0

Solve for x

x - 5 = 0 or x + 2 = 0

x = 5 or x = -2

The value of x cannot be negative

So:

x  = 5

Recall that:

Length = x

Width = x - 3

So:

Length =5

Width = 2 ---- i.e. 5 - 3

6 0
2 years ago
The denominator of a rational number is greater than its numerator by 5. If 5 is subtracted from the numerator and 4 is added to
nasty-shy [4]

Answer:

7/12.

Step-by-step explanation:

=x/x+5.

x-5/x+5+4=⅛

x-5/x+9=⅛

x-5=⅛(x+9)

x-5=⅛x+1⅛

x-⅛x=1⅛+5

⅞x=49/8

7x=49

x=7

thus the initial fraction is x/x+5= <u>7</u><u>/</u><u>1</u><u>2</u>

A rational number is a fraction

4 0
3 years ago
X+5/2 + x−3/3 =3 1/6
Nataly [62]
The answer is x=-1/2
3 0
3 years ago
Read 2 more answers
Solve 3x+4y=17<br>5x+4y=27​
Marta_Voda [28]

Answer:

(5x+4y)-(3x+4y)=27-17

2x=10

x=10÷2

=5

6 0
3 years ago
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