X+8=78what's the x answerplease help

Mathematics

1 answer:

Aleks [24]3 years ago

7 0

Answer:

Step-by-step explanation:

X=78-8

X=70

it is so easy

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While on a walk in the country, you pass a field full of horses and chickens. After a quick count, you determine there are 43 he

Irina-Kira [14]

Horse = x = 1 head and 4 feet

Chicken =y = 1 head and 2 feet

Horse + chicken = x + y = 43 ( total heads)

Horse = 43 - y

4x + 2y = 122

4(43-y) + 2y = 122

Simplify:

172-4y + 2y = 122

Combine like terms

172-2y = 122

Subtract 172 from both sides

-2y = -50

Divide both sides by-2

Y = 25

X + y = 43

X + 25 = 43

X = 18

There are 18 horses and 25 chickens.

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3 years ago

N parallelogram LMNO, what are the values of x and y?

Liula [17]

In parallelogram, LMNO,

Because Opposite angles are equal:
Therefore, 2x = 3x -55
Or x= 55
Now, the sum of angles in a parallelogram is 360
2x+3x-55+5y+5y =360
5x +10y -55 = 360
5*55 -55 + 10y = 360
10y +220 = 360
10y = 140
y=14
Thus, x=55 and y= 14