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kvv77 [185]
3 years ago
12

Help plzzzzz will give brainliest

Mathematics
1 answer:
Marysya12 [62]3 years ago
5 0

1. 3.52 x 10⁸

2. y = -4

have a great day ♡

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5x + 7y = -29, y = x + 1
Afina-wow [57]

Answer:d

Step-by-step explanation:

6 0
3 years ago
Who’s right? And why?
kvasek [131]

Answer: Raymond is correct

The DJ charges $75 an hour.

=================================================

Explanation:

x = number of hours

y = total cost

The DJ does a 3-hour event for $275. This means one point is (x,y) = (3,275)

Another point is (5,425) because a 5-hour event costs $425.

Let's find the slope of the line through these two points.

(x_1,y_1) = (3,275) \text{ and } (x_2,y_2)  = (5,425)\\\\m = \frac{y_{2} - y_{1}}{x_{2} - x_{1}}\\\\m = \frac{425 - 275}{5 - 3}\\\\m = \frac{150}{2}\\\\m = 75\\\\

The slope is 75, meaning that each time y goes up by 75, x goes up by 1.

Flipped around it means each time x goes up by 1, y goes up by 75.

This means each time we add on an extra hour, the cost goes up by $75.

The DJ charges $75 an hour. Raymond is correct.

3 0
2 years ago
Evaluate the expression, when x = 3.2x + 4(x - 2)a910ObocOd118
love history [14]

The initial expression is:

2x + 4(x - 2)

Replacing x by 3, we get:

2(3) + 4(3 - 2)

6 + 4(1)

6 + 4

10

The value of the expression is 10

4 0
1 year ago
X-z=-3
mina [271]

Answer:

that is impossible

Step-by-step explanation:

because you have 2 equations where y+z equal different numbers

3 0
3 years ago
At the market, 9 apples cost $4.00. How much does 10 apples cost?
ycow [4]

Answer:

$6.25

Step-by-step explanation:

Each apple is 2.25

6 0
3 years ago
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