2 years ago

(4x^2 – 7x + 3) + (2x^2 – 2x – 5) i need this combined, im stuck

Mathematics

1 answer:

Gala2k [10]2 years ago

5 0

6x^2 -9x -2 just add common variables

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use the substitution method to solve the system of equations choose the correct ordered pair x-y=2 2x+3y=14

k0ka [10]

Answer:

(8/5 , -2/5)

Step-by-step explanation:

x-y=2

2x+3y=14

-y=-x+2

y=x-2

2x+3(x-2)=14

2x+3x-6=14

5x-6=14

5x=8

x=8/5

y=(8/5)-2

y= -2/5

5 0

3 years ago

Lakshmi donates 20% of her income to charity. What fraction of her income does Lakshmi donate to charity?

tigry1 [53]

Answer:1/5

Step-by-step explanation:

20/100=1/5

5 0

3 years ago

A store sells orange juice in three different-sized containers. Which

Mariulka [41]

Eh I would personally say that your getting more if you do 96 it is more expensive but don’t get 64

3 0

2 years ago

If Z= 2+2i, what is z^4?

Dimas [21]

Answer:

assume z is equal to 5.

log(z^4/5) equals log(5^4/5) equals log(5^3) equals 2.096910013.

4 * log(5) - log(5) equals 2.096910013.

they give you the same answer.

this means they're equivalent.

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

Evaluate the expression. [(3–5)(34)]3 1 Innermost group, apply the product of powers: [3–1]3 2 Apply the power of a power: 3–3 3

Otrada [13]

Answer:

x=27

Step-by-step explanation:

To evaluate the expression: $[(3^{-5})(3^4)]^3$

Step 1: Innermost group, apply the product of powers ( $a^x \times a^y =a^{x+y}$

Therefore:

$(3^{-5})(3^4)=3^{-5+4}=3^{-1}$

We then have:

$=[3^{-1}]^3$

Step 2: Apply the power of a power

$[3^{-1}]^3=3^{-1 \times 3} =3 ^{-3}$

Step 3: Apply the negative exponent

$3 ^{-3} =\dfrac{1}{3^3}$

Step 4: Simplify

$\dfrac{1}{3^3}=\dfrac{1}{27}$

Therefore, the value of x in the simplified expression is 27.

4 0

3 years ago