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saveliy_v [14]
3 years ago
10

Please help i will mark brainly!

Mathematics
1 answer:
mariarad [96]3 years ago
8 0

Answer:

D is the answer. :)

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6 times x divided by 18
maw [93]

Answer:

\frac{6x}{18}

Step-by-step explanation:

7 0
2 years ago
The system of equations y=4x y-4=4 (x-1) has.
Alekssandra [29.7K]

Answer:

infinitely many solutions.

Step-by-step explanation:

y=4x

y-4=4 (x-1)

Lets substitute the first equation into the second equation.

4x -4 = 4(x-1)

Distribute

4x-4 = 4x-4

Subtract 4x from each side

4x-4x-4 =4x-4x-4

-4=-4

This is always true.  X can be anything.  We have infinite solutions

6 0
3 years ago
Read 2 more answers
A bag holds 500 grams of sand. About how many grains of sand are in the bag? There are about 1,000 grains of sand in 1 gram.
Nuetrik [128]
500000 is the answer you are looking for my friend :D
4 0
2 years ago
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A test score of 48.4 on a test having a mean of 66 and a standard deviation of 11. Find the ​z-score corresponding to the given
Mariulka [41]

Answer:

A. -1.6; not significant

Step-by-step explanation:

The z-score of a data set that is normally distributed with a mean of \bar x and a standard deviation of \sigma, is given by:

z=\frac{x-\bar x}{\sigma}.

From the question, the test score is: x=48.4, the mean is \bar x=66, and the standard deviation is \sigma =11.

We just have to plug these values into the above formula to obtain:

z=\frac{48.4-66}{11}.

This simplifies to:  z=\frac{-17.6}{11}.

z=-1.6.

We can see that the z-score falls within two standard deviations of the mean.

Since -2\le-1.6\le2 the value is not significant.

The correct answer is A. -1.6; not significant

3 0
3 years ago
Simplify the expression (7+5)+4x13-2
koban [17]
I think the answer is 62 because 7+5=12  4*13=52  12+52=64  64-2=62
8 0
3 years ago
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