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Luba_88 [7]
2 years ago
13

Evaluate the expression when x= - 4 and y=7 9y-x

Mathematics
1 answer:
Paraphin [41]2 years ago
7 0
The equation would end up being 9x4-(-7), two negatives equal a positive changing it to, 9x4+7, which PEMDAS plays part in this having the multiplication go first, 9x4 equals 36+7=43
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ALGEBRA II // MODULE 1
natita [175]

Answer:

1. x = 3

2.x = 6

3. x = 5

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3 0
3 years ago
HELP ME I BEG OF YOU!!!!
Vladimir [108]

Answer:

B) -34.5 < x

---

Hope this helps!

4 0
3 years ago
Read 2 more answers
6. Find the slope of the given points (3,4) and (7,-4).
Grace [21]

Answer:

-2, C

Step-by-step explanation:

Use the formula: (y2-y1)/(x2-x1)

Substitute the numbers:

(4-(-4)) / (3-7)

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= -2

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7 0
3 years ago
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A line contains the points (4,5) and (3, -9). Write the equation of the line using point-slope form.
neonofarm [45]

Answer:

C

Step-by-step explanation:

original formula is: y - y1 = m (x - x1) ordinates= (x1, y1)

insert the a corresponding x and y coordinate:

y + 3 = -2 (x + 9)

Don't forget to change the signs depending on whether their positive or negative:

(3, -9) since 3 is positive but there is a minus in the formula it would be -3

since -9 is negative and in the equation there's a minus sign you would change it to positive. (negative times a negative equals a positive)

3 0
3 years ago
Totsakan school is selling tickets to a choral performance on the first day of ticket sales the school sold 10 senior tickets an
ohaa [14]

Given :

On the first day of ticket sales the school sold 10 senior tickets and 1 child ticket for a total of $85 .

The school took in $75 on the second day by selling 5 senior citizens tickets and 7 child tickets.

To Find :

The price of a senior ticket and the price of a child ticket.

Solution :

Let, price of senior ticket and child ticket is x and y respectively.

Mathematical equation of condition 1 :

10x + y = 85    ...1)

Mathematical equation of condition 2 :

5x + 7y = 75    ...2)

Solving equation 1 and 2, we get :

2(2) - (1)   :

2( 5x + 7y - 75 ) - ( 10x +y - 85 ) = 0

10x + 14y - 150 - 10x - y + 85 = 0

13y = 65

y = 5

10x - 5 = 85

x = 8

Therefore, price of a senior ticket and the price of a child ticket $8 and $5.

Hence, this is the required solution.

 

5 0
3 years ago
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