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Fofino [41]
3 years ago
13

5(-3x - 2) - (x - 3) = -4 (4x +5) + 13

Mathematics
2 answers:
Alex17521 [72]3 years ago
5 0

Answer: No value for x

Step-by-step explanation:

Step 1: open the bracket

5(-3x - 2) - (x - 3) = -4 (4x +5) + 13

-15x + 10 - x +3= -16x - 20 +13

Step 2: combine like terms

-15x - x + 16x = -20 +13 -10 -3

-16× +16× = -20

0= -20

S_A_V [24]3 years ago
4 0
Start off by distributing the numbers into the parentheses:

5(-3x - 2) - (x - 3) = -4(4x + 5) + 13
-15x - 10 - (x - 3) = -16x - 20 + 13

(Note: It's super important to be careful when opening up negative parentheses! -(x-3) is not just - x - 3, it is actually -x + 3 since the negative is distributed in every number!)

-15x - 10 - x + 3 = -16x - 20 + 13
-16x - 7 = -16x - 7
-16x = -16x
0 = 0

There is an infinite number of solutions in this equation.

(When you get 0=0 when solving for a variable, that means that said variable will have infinite solutions, that is, any number plugged into the equation will work)
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Let f be defined as shown. What is f^-1(-3)
Irina18 [472]

Hello,

f^{-1}(-3)=-1\\

You have just to read the arrows un reversed order:

in f we find (-1,-3)  so in f^{-1} we find (-1,-3)^{-1}=(-3,-1)

5 0
3 years ago
7w = 87;w = 12 Please help!
k0ka [10]

Answer:

it is false because, in the equation 84 does not equal 84.

Step-by-step explanation:

Hope I could help, if you need the equation let me know! :)

5 0
3 years ago
Which equation has the greatest positive rate of change?
Rasek [7]

Answer:

y=4x+4

Step-by-step explanation:

It has the biggest slope of the equations of 4, and increases the most.

5 0
2 years ago
Sofia's taco truck lets customers choose 3 ingredients from the list below to add to their tacos. How many groups of 3 different
DIA [1.3K]

Using the combination formula, and considering that the list has 6 ingredients, it is found that 20 groups of 3 different ingredients can go on a taco.

The order in which the ingredients are chosen is not important, hence, the <em>combination formula</em> is used to solve this question.

<h3>Combination formula: </h3>

C_{n,x} is the number of different combinations of x objects from a set of n elements, given by:

C_{n,x} = \frac{n!}{x!(n-x)!}

In this problem, 3 ingredients are chosen from a set of 6, hence:

C_{6,3} = \frac{6!}{3!3!} = 20

20 groups of 3 different ingredients can go on a taco.

To learn more about the combination formula, you can take a look at brainly.com/question/25990169

4 0
2 years ago
Theo is a cleaner,
GaryK [48]

Step-by-step explanation:

1 hour 50 minutes = 110 mins

1 1/2 hours = 90 mins

add all these:

110

90

85

55

35

when you add all these you get 375

every hour has 60 minutes

375 ÷ 60 = 6.15

if he starts at 9 am and he cleans for 6.15 hours he will be finished by 3:15pm.

4 0
2 years ago
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