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stira [4]
3 years ago
11

Solve the simultaneous equation: 3x+y=-4 3x-4y=6

Mathematics
1 answer:
Verdich [7]3 years ago
7 0

3x+y=-4

3x-4y=6

--------------subtract

5y = -10

y = -2

Substitute y = -2 into 3x + y = -4

3x + (-2) = -4

3x - 2 = -4

3x = -2

 x = -2/3

Answer

Solution x = -2/3, y = - 2 OR (-2/3 , - 2)

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Jenny gave her brother 4 stickers what fraction does she have left
coldgirl [10]
1/4 or 4/8 or 5/10

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4 0
3 years ago
Read 2 more answers
What is half of 7 5/8 and 5 3/8
meriva

Answer:

6.5

Step-by-step explanation:

7 5/8 + 5 3/8= 13

13/2=6.5

5 0
3 years ago
Name the property of real numbers illustrated by the equation.
Julli [10]

Answer:

Distributive property

Step-by-step explanation:

The distributive property states a(b+c)=a*b+a*c. This property states that when you multiply more than one thing, you must be sure to multiply everything. When you order fast food combos, you do the distribution property to receive the correct order.

If I order 3 Happy Meals, then I will receive

3(hamburgers +fries + drinks +toys)

3 hamburgers+3 fries+3 drinks+3 toys.

If I don't, then I have broken the distribution property.

5 0
3 years ago
Ok i have a few questions please give examples and descriptions as well
Arte-miy333 [17]

Answer:

1) Multiplying powers with the same base would be product rule. It where you just add the exponents. Dividing powers with the same base would be the quotient rule. Its where you subtract the exponents.

2)Where you multiply the two exponents together

3)The negative law is where for example, if it were in the numerator, then it would be placed at the denominator with a positive exponent whereas if it were in the denominator it would be on the numerator with the positive exponent. The zero law just states the anything to the power to zero is one.

Step-by-step explanation:

1) 3^3 x 3^4 = 3 ^3+4 = 3^7

3^9 ÷3² = 3^9-2 = 3^7

2) (3^2)^2 = 3^2×2 =3^4

3) 1/3^-5 = 3^5                 \

3^-7 =1/3^7

2^0 = 1

8 0
2 years ago
0.145 as a fraction or a mixed number.
Vlad1618 [11]

we can convert any decimal to a fraction, by simply <u>using as many zeros at the bottom as there are decimals, and losing the dot atop</u>, now let's do so, notice we have 3 decimals, so we'll use 3 zeros.


\bf 0.\underline{145}\implies \cfrac{0145}{1\underline{000}}\implies \stackrel{simplified}{\cfrac{29}{200}}

3 0
3 years ago
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