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STatiana [176]
3 years ago
15

The sum of three numbers is 15 the second number is 2 times the first the 3rd nimber is 30 less than the second what is the thir

d number
Mathematics
1 answer:
7nadin3 [17]3 years ago
5 0

Answer:

i think about it

Step-by-step explanation:

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Directions: Set up a system of equations based on the information in the word problem and plz show work 1: The local street cart
aksik [14]

Answer:

2.5x+0.75y=933

x+y=747

Step-by-step explanation:

x= number of cheese sandwiches

y= number of soft drinks

first equation: 2.5x+0.75y=933

**this is representing the cost of the drinks and sandwiches

second equation: x+y=747

**because x and y are the NUMBER of soft drinks and sandwiches, they both have to toal up to 747.

8 0
3 years ago
A news report suggested that an adult should drink a minimum of 4 pints of water per day.
spin [16.1K]

9514 1404 393

Answer:

  448

Step-by-step explanation:

(4 pt/da)×(7 da/wk)×(16 oz/pt) = 448 oz/wk

That would be 448 fluid ounces per week.

3 0
3 years ago
Hi! -2x + y = -11 4x + 4y = 4 System by substitution!!!
Mashcka [7]

Answer:

Point Form:

(

8

3

,

−

5

3

)

Equation Form:

x

=

8

3

,

y

=

−

5

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6 0
2 years ago
Read 2 more answers
Type the correct answer in the box,
HACTEHA [7]

<u>We'll assume the quadratic equation has real coefficients</u>

Answer:

<em>The other solution is x=1-8</em><em>i</em><em>.</em>

Step-by-step explanation:

<u>The Complex Conjugate Root Theorem</u>

if P(x) is a polynomial in x with <em>real coefficients</em>, and a + bi is a root of P(x) with a and b real numbers, then its complex conjugate a − bi is also a root of P(x).

The question does not specify if the quadratic equation has real coefficients, but we will assume that.

Given x=1+8i is one solution of the equation, the complex conjugate root theorem guarantees that the other solution must be x=1-8i.

3 0
3 years ago
The Earth has a mass of about 6 x 1024 kg. Neptune has a mass of 1 x 1026 kg.
Leno4ka [110]
Neptune is about four times wider than Earth.
8 0
3 years ago
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