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xxMikexx [17]
3 years ago
14

Solve the systems of equations using the substitution method. 5y-6=x Y=-x

Mathematics
1 answer:
kaheart [24]3 years ago
7 0

Answer:

x=-1, y=1. (-1, 1).

Step-by-step explanation:

5y-6=x

y=-x

-----------

5(-x)-6=x

-5x-6=x

-5x-x=6

-6x=6

x=6/-6

x=-1

y=-(-1)=1

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A company conducted a survey to see whether its new toothpaste was morepopular with children or adults. Of the children surveyed
Naily [24]

Given: The information provided in the table shown

To Determine: From the options provided, the correct option that best describe the information given in the table

Solution

Given that 28% of the children used toothpaste. From the table

Children(toothpaste)=\frac{0.07}{0.25}=\frac{7}{25}\times100=28\%

Let us calculate the percentage of adult that used toothpaste

Adult(toothpaste)=\frac{0.08}{0.75}=\frac{8}{75}\times100=10.667\%\approx11\%

Hence, a smaller percentage of adults (about 11%) use the toothpaste.

The correct option is OPTION C

4 0
2 years ago
On a given planet, the weight of an object varies directly with the mass of the object. Suppose that an object whose mass is 7 k
Airida [17]

Answer:

21 N

Step-by-step explanation:

let mass be m and weight be w

Given w varies directly with m then the equation relating them is

w = km ← k is the constant of variation

To find k use the condition m = 7 , w = 49 , then

49 = 7k ( divide both sides by 7 )

7 = k

w = 7m ← equation of variation

When m = 3 , then

w = 7 × 3 = 21 N

3 0
3 years ago
Find the approximate location of 2/3, 1/2, and 3/8 on a number line 0 to 1
schepotkina [342]

Answer:

0.6 (terminating), 0.5, 0.375

Step-by-step explanation:

I would assume you are wanting these in decimal form. In that case, you would have:

2/3 = 0.6 (terminating)

1/2 =  0.5

3/8 = 0.375

5 0
3 years ago
Read 2 more answers
A department​ store, on​ average, has daily sales of ​$28 comma 286.28. The standard deviation of sales is ​$1 comma 500. On​ Tu
wolverine [178]

Answer:

z-score = 4.43,

It is a Good day

Step-by-step explanation:

The provided information is:

Mean = $28,286.28

Standard deviation = $1,500

Let x be the sell of department store on Tuesday.

Then, x = $34,924.62

The z-score is define as:

z=\dfrac{x-\mu}{\sigma}\\\\=\dfrac{34924.62-28286.28}{1500}\\\\=4.43      

Thus, the Tuesday's z-score is 4.43. So this is usually good day.

3 0
3 years ago
Sadie and Connor both play soccer. Sadie scored 3 times as many goals as Connor. Together they scored 12 goals. Create and solve
Anastasy [175]

Answer:No

Step-by-step explanation:

Since Sadie scored 3 times more than Conner and it says can Conner score 4,well 3 x 4 is already 12 which is Sadies number not even counting Conners so no,Conner could have not.

Even though you don’t need to I‘ll just tell you what Conner scored,it is 3 since Sadie is 3 times more than Conner ,that’s 3 x 3 which is 9 then plus Conners 3 goals add together which is 12

Hope this helped!

If you are reading this hope you have a wonderful day and may your dreams come true!

8 0
3 years ago
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