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FromTheMoon [43]
3 years ago
10

2x + 3y = -5 y = 3x - 9 Use substitution to solve the system.

Mathematics
1 answer:
goblinko [34]3 years ago
7 0
(2,-3). solve for the first variable in one of the equations, then substitute the result into the other equation
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Anyone mind helping me ?
storchak [24]

Answer:

<GOJ

Step-by-step explanation:

O is the center of the circle

So central angle is <GOJ

3 0
3 years ago
Can anyone help me with this? thank you
wel

"MIDDLE OF THE NIGHT"

I summoned you, please come to me

Don't bury thoughts that you really want

I fill you up, drink from my cup

Within me lies what you really want

Come, lay me down

'Cause you know this

'Cause you know this sound

In the middle of the night

In the middle of the night

Just call my name

I'm yours to tame

In the middle of the night

In the middle of the night

I'm wide awake

I crave your taste all night long

'Til morning comes

I'm getting what is mine

You gon' get yours, oh no, ooh

In the middle of the night

In the middle of the night, oh

These burning flames, these crashing waves

Wash over me like a hurricane

I captivate, you're hypnotized

Feel powerful, but it's me again

Come, lay me down

'Cause I know this

'Cause I know this sound

In the middle of the night

In the middle of the night

Just call my name

I'm yours to tame

In the middle of the night

In the middle of the night

I'm wide awake

I crave your taste all night long

'Til morning comes

I'm getting what is mine

You gon' get yours, oh no, ooh

In the middle of the night

In the middle of the night, oh

Just call on me, ah

Just call my name

Like you mean it, ah

In the middle of the night

In the middle of the night

Just call my name

I'm yours to tame

In the middle of the night

In the middle of the night

I'm wide awake

I crave your taste all night long

'Til morning comes

I'm getting what is mine

You gon' get yours, oh

In the middle of the night

In the middle of the night, o

Step-by-step explanation:

5 0
2 years ago
A bookstore owner is conducting market research to forecast sales for the coming year. The bookstore is open 360 days a year and
statuscvo [17]
156 dollars because 13 times 12 (months)
equals 156
4 0
2 years ago
Ronda has 34.27 in her checking account. She deposits $25.00 into her account and then writes a check for $59.99. What is Ronda'
Inga [223]
-0.72 because u can’t write a check and u don’t have the funds
4 0
3 years ago
How many pounds of a 15% copper alloy must be mixed with 700lb of a 30% copper alloy to maybe a 25.5% copper alloy
lisov135 [29]

Answer:

300\; \rm lb.

Step-by-step explanation:

Let x represent the mass (in pounds) of that 15\% copper alloy required, such that the final mixture would contain 25.5\% copper by mass.

Consider: if x pounds of that 15\% copper alloy is mixed with 700 pounds that 30\% copper alloy, what would be the mass of copper in the mixture?

  • Mass of copper in x pounds of that 15\% copper alloy: (0.15\, x)\; \rm lb.
  • Mass of copper in 700 pounds of that 30\% copper alloy: 700 \times 0.30 = 210\; \rm lb.

Therefore, the mixture would contain (210 + 0.15\, x) \; \rm lb of copper.

The mass of that mixture would be (700 + x)\; \rm lb. The mass fraction of copper in that mixture would be:

\displaystyle \frac{(210 + 0.15\, x)\; \rm lb}{(700 + x)\; \rm lb} \times 100\%.

This ratio is supposed to be equal to 25.5\%. These two pieces of equations combine to give an equation about x:

\displaystyle \frac{(210 + 0.15\, x)\; \rm lb}{(700 + x)\; \rm lb} \times 100\% = 25.5\%.

\displaystyle \frac{210 + 0.15\, x}{700 + x} = 0.255.

Simplify and solve for x:

210 + 0.15\, x= 0.255\, (700 + x).

(0.255 - 0.15)\, x= 210 - 0.255 \times 700.

\displaystyle x = \frac{210 - 0.255 \times 700}{0.255 - 0.15} = 300.

Therefore, 300\; \rm lb of that 15\% alloy would be required.

4 0
3 years ago
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