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r-ruslan [8.4K]
3 years ago
5

Pls help me its for a grade

Mathematics
2 answers:
SVETLANKA909090 [29]3 years ago
7 0

Answer:

D. -9

Step-by-step explanation:

5f - 6f = 9 \\  - f = 9 \\ f =  - 9

HACTEHA [7]3 years ago
7 0

its either B C or D

cant be A

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How do you graph <br> y=3x and y=-x-8
laila [671]

Answer:

The points for the given two linear equation as

x_1 , y_1 = - 2 , - 6

x_2 , y_2 = - 2 , 6

The graph so plotted as shown

Step-by-step explanation:

Given as :

The two linear equation are

y = 3 x                 ........A and

y = - x - 8             .........B

Solving equation A and B

Now, Put The value of y from eq A into eq B

So, 3 x = - x - 8

Or, 3 x + x = - 8

Or, 4 x = - 8

∴ x = \dfrac{-8}{4}

I.e x = - 2

Now , Put the value of x into eq A

∵ y = 3 x

∴ y = 3 × (-2)

I.e y = - 6

Again, Put the value of x into eq B

∵ y = - x - 8

∴ y = - 2 - (-8)

I.e y = 6

So, for x = - 2 , y = - 6

And for x = - 2 , y = 6

Hence , The points for the given two linear equation as

x_1 , y_1 = - 2 , - 6

x_2 , y_2 = - 2 , 6

The graph so plotted as shown . Answer

8 0
3 years ago
What is -15÷3 please help me with this <br>​
Sergio [31]

Answer:

-5

Step-by-step explanation:

You can work backwards with this problem if that helps you.  

so, what times 3 = -15

-5 times 3 = -15 so that would be the answer

4 0
3 years ago
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Help please...I'll do anything...
Sveta_85 [38]

Answer:

Step-by-step explanation:

Here is a formula that can help:

4 0
3 years ago
A table and 8 chairs weigh 235.68 lb together. If the table weighs 157.84 lb, what is the weight of one chair in pounds?
Alona [7]

Answer: 9.73 lb each chair

Step-by-step explanation:

You substract the weight of the table alone from the full weight:

235.68 - 157.84=77.84

Then you divide 77.84 by 8 chairs and you obtain the weight of each individual chair

77.84/8= 9.73 the weight of each individual chair

7 0
3 years ago
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Based upon historical data, it is known that 8% of 12-egg cartons contain at least one broken egg. A grocery store manager would
kakasveta [241]

Based on the 5 trials, 1 carton of eggs is expected to contain at least one broken egg, on average

<h3>How to determine the number of cartons</h3>

From the question, we understand that only one of the first 10 double-digit numbers is between 01 and 08

This means that:

The average carton or the expected value of eggs in the simulation is 1

Hence, 1 carton of eggs is expected to contain at least one broken egg, on average

Read more about expected values at:

brainly.com/question/15858152

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