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Keith_Richards [23]
3 years ago
9

X+7=4 Algebraic equation

Mathematics
2 answers:
Vaselesa [24]3 years ago
5 0
The answer is x=  

-3

Hope I helped!

DiKsa [7]3 years ago
4 0
X+7=4
-7 -7
x=-3

subtract the access numbers from the side with the variable, do to BOTH sides
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In a pen of goats and chickens, there are 40 heads. and 130 feet How many goats and chickens are there?​
timama [110]

Answer:

25 goat and 15 chicken

Step-by-step explanation:

Say the number of goats is G, then the number of chickens is 40 - G as there are 40 heads and each chicken and each goat has one head.

The number of feet is 130

So 2(40 - G) + 4G = 130

So 80 - 2G + 4G = 130

2G = 50

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25 goats and 15 chickens

8 0
3 years ago
During the past year in the maternity ward of a hospital in a large city, 1,254 males were born and 1,462 females. If we can ass
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\frac{1,254}{1,254+1,462} /  \frac{1,462}{1,254+1,462}\\ \frac{1,254}{2,716} / \frac{1,462}{2,716}\\\frac{627}{1,358} /  \frac{731}{1,358}

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Chance of girl: 731/1,358
6 0
3 years ago
I need help on these questions pls
Lady bird [3.3K]
3a. Megan's car has more gas
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3 0
3 years ago
Find the value of x and y
Yakvenalex [24]

Answer:

x = 80, y = 122

Step-by-step explanation:

I got this equation by using vertical angles to create a complimentary angle pair (they sum to 90 degrees).

3/4x+2/5x-2=90°,

23/20x - 2=90°,

23/20x = 92°,

92/(23/20)

20/(1/4)

20(4)

= 80.

Since the angles are a linear pair on the left side(they sum to 180 degrees). Just subtract 180 from 3/4x-2 and substitute x into the expression.

180-(3/4(x)-2), 180-3/4(80)+2 = 120+2 = 122

7 0
3 years ago
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6(1 − 3d) < 2(7d + 6
vagabundo [1.1K]

Answer:

d> -3/16

Step-by-step explanation:

8 0
3 years ago
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