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2 years ago

Could someone help me please!! I'm not getting any of the answers! (Math)

Mathematics

1 answer:

ruslelena [56]2 years ago

8 0

3x + y = 3
x + y = 2

x = 1/2 and y = 3/2

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ANSWER pls........................

Anettt [7]

Answer:

Step-by-step explanation:

Ok so first the chicken. 12.36 x 2= 24.72

Broccoli. 1.98 divides by 2= 0.99

Milk. 3.49, easy.

so add them up and you get 29.20, remember, she recieves .80 back, so she paid 30 because 29.20 + .80 = 30 Hope this helps! Have a good day! :)

6 0

3 years ago

An airplane flew 6,772 miles one day. The next day it flew

Sonja [21]

Answer:

5520 miles

Step-by-step explanation:

6,772 miles - 1,252 miles = 5520 miles

3 0

2 years ago

HELP PLEASE <br><br>i dont understand at all...

bija089 [108]

An exponent signifies repeated multiplication.

$x\cdot x\cdot x=x^{3}$ the factor x is repeated 3 times

Exponents can be added and subtracted to express the effects of multiplication and division.

$\dfrac{x\cdot x\cdot x\cdot x\cdot x}{x\cdot x\cdot x}=\dfrac{x^{5}}{x^{3}}\\\\=\dfrac{x\cdot x\cdot x}{x\cdot x\cdot x}\cdot x\cdot x=x\cdot x\\\\=x^{(5-3)}=x^{2}$

The addition and subtraction of exponents works the same even when there are more denominator factors than numerator factors.

$\dfrac{x\cdot x\cdot x}{x\cdot x\cdot x\cdot x\cdot x}=\dfrac{x^{3}}{x^{5}}=\dfrac{1}{x^{2}}\\\\=x^{(3-5)}=x^{-2}$

That is, a negative numerator exponent is the same as a positive denominator exponent and vice versa. You can move a factor with an exponent from denominator to numerator and change the sign of the exponent, and vice versa.

Your expression has 3 in the denominator with a negative exponent. It can be moved to the numerator and the exponent changed to positive:

$\dfrac{1}{3^{-2}}=3^{2}\\\\=3\cdot 3=\bf{9}$

8 0

3 years ago

Round 58.9871 2 decimal place

gayaneshka [121]

Answer:

58.9871 rounded to the second decimal place is 58.98.

Step-by-step explanation:

6 0

2 years ago

A plastic bin contains red, yellow, and green key chains. Out of 350 keys, 10% are yellow, of the remaining key chains, 60% are

Alinara [238K]

Answer: 105

Explanation:

60% + 10% = 70% = yellow and green

30% = red

350/10 = 35 x 3 = 105

3 0

3 years ago