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3 years ago

What is the value of n? 9×27+2×31-28=n

Mathematics

2 answers:

gregori [183]3 years ago

4 0

N=277 Hope this helps :)

skelet666 [1.2K]3 years ago

4 0

PEMDAS!! Parentheses exponents multiplication division adding subtracting

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Bart has these quiz scores: 78, 76, 74, 80, 82, 78, 82, 75, 77, 82. Bart tells his parents that his typical score is an 82. Whic

xxTIMURxx [149]

Answer:i cant help im sorry

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

What is the smallest value of y in the solution set to the system of equations below?

n200080 [17]

Answer:

The smallest value of y in the given two equations is 78

Step-by-step explanation:

Given as :

The two equation is given as :

y = x² + 6 x +23 ...........1

y = 18 x - 12. ..........2

Now, solving both equations

putting the value of y from eq 2 into eq 1

So, x² + 6 x +23 = 18 x - 12

Or, x² + 6 x +23 - 18 x + 12 = 0

Or, x² - 12 x + 35 = 0

Or, x² - 5 x - 7 x + 35 = 0

Or, x (x - 5) - 7(x - 5) = 0

Or, (x - 5) (x - 7) = 0

∴ x = 5 , 7

Now, for smallest value of y , take x = 5

∴ put the value of x in eq 2

So, y = 18 x - 12

I.e y = 18 × 5 - 12

Or, y = 90 - 12

∴ y = 78

Hence, The smallest value of y in the given two equations is 78 . answer

7 0

3 years ago

Simplify each expression. 3.3(x + 4)

dimulka [17.4K]

Answer:

33 • (x + 4)

-----------------

Step-by-step explanation:

(1): "3.3" was replaced by "(33/10)".

STEP 1:

Simplify ——

Equation at the end of step 1:

--- • (x + 4)

STEP 2:

Final result :

33 • (x + 4)

-----------------

I hope I helped, and I always appreciate Brainliest!!! :)

5 0

3 years ago

Which of the following is equivalent to y-4=1/2(x-6)

Talja [164]

Answer:

Step-by-step explanation:

If we reorder the equation in a certain way then it will look like this:

y-4=1/2(x-6)

y-4=1/2x-3

y-1=1/2x

y=1/2x+1

therefore B is correct since we reduced the equation to y=1/2x+1.

It may be hard to understand but the question is basically asking which one of these answers is equal to y.

Hope this helped you and let me know if i messed up or if im correct so i can imporve from my mistakes

7 0

2 years ago

Sunshine High School claims that 72% of its students complete their homework on a daily basis. Ms. Carter surveyed 80 students a

zimovet [89]

Answer:

Option A)

z equals 0.60 minus 0.72 all over the square root of the quantity 0.72 times 0.28 over 80

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 80

p = 72% = 0.72

$\hat{p} = 60\5 = 0.60$

Formula for z-statistic:

$z = \dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}$

Putting the values, we get,

$z = \displaystyle\frac{0.60-0.72}{\sqrt{\frac{0.72(1-0.72)}{80}}}\\\\z =\displaystyle\frac{0.60-0.72}{\sqrt{\frac{0.72(0.28)}{80}}} = -2.39$

This, the correct answer is

Option A)

z equals 0.60 minus 0.72 all over the square root of the quantity 0.72 times 0.28 over 80

4 0

3 years ago