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QveST [7]
3 years ago
14

What’s the sum(2r-6)+4(r-3

Mathematics
2 answers:
Gre4nikov [31]3 years ago
7 0
The answer is this 6r-6
vlabodo [156]3 years ago
4 0

Answer:

=6r−18

Step-by-step explanation:

Distribute:

=2r+−6+(4)(r)+(4)(−3)

=2r+−6+4r+−12

Combine Like Terms:

=2r+−6+4r+−12

=(2r+4r)+(−6+−12)

=6r+−18

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Plz Solve Will Mark Brainliest and No Stealing Points Or Will Report<br> Part 1
nata0808 [166]

Answer:

I'm telling you once in my life, I committed mistake and I'M NOT POINT STEALER. put that in mind. You hurt me.

Let's solve for x.

2x+3y=5

Step 1: Add -3y to both sides.

2x+3y+−3y=5+−3y

2x=−3y+5

Step 2: Divide both sides by 2.

2x

2

=

−3y+5

2

x=

−3

2

y+

5

2

Answer:

x=

−3

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5 0
3 years ago
Explain how knowing that 5 divided by 8 is 0.625 helps you write the decimal for 4 5/8
arsen [322]
Because it become 4(0.625) then it is 2.5
8 0
3 years ago
13.5 is 15% of what number?<br> O A) 111.1<br> OB) 60<br> OC) 202.5<br> OD) 90
Nostrana [21]

Answer: 90

Step-by-step explanation:

15% of 90 = 13.5

4 0
3 years ago
Read 2 more answers
Standard form of y+2=1/2(x-4)
gogolik [260]

y + 2 =  \frac{1}{2} (x - 4) \\ 2y + 4 = x - 4 \\  - x + 2y =  - 8
6 0
3 years ago
Read 2 more answers
A random sample of 77 fields of corn has a mean yield of 26.226.2 bushels per acre and standard deviation of 2.322.32 bushels pe
PSYCHO15rus [73]

Answer:

Therefore the  95% confidence interval is (25,707.480 < E < 26,744.920)

Step-by-step explanation:

n = 77

mean u = 26,226.2  bushels per acre

standard deviation s = 2,322.32

let E = true mean

let A = test statistic

Find 95% Confidence Interval

so

let  A =  (u - E) *  (\sqrt{n}  / s)   be the test statistic

we want      P( average_l <  A  < average_u )  = 95%

look for  lower 2.5%  and the upper 97.5%  Because I think this is a 2-tail test

average_l =  -1.96  which corresponds to the 2.5%

average_u = 1.96

P(  -1.96  <  A  <  1.96)  =  95%

P(  -1.96  <  (u - E) *  (\sqrt{n}  / s)  <  1.96)  =  95%

Solve for the true mean E ok

E   <   u + 1.96* (s  / \sqrt{n})

from  -1.96  <  (u - E) *  (\sqrt{n}  / s)

E < 26,226.2 +  1.96*( 2,322.32 / \sqrt{77} )

E < 26,226.2 +  1.96*( 2,322.32 / \sqrt{77} )

E < 26,226.2 +  518.7197348105429466

upper bound is 26,744.9197

or

u - 1.96* (s  / \sqrt{n})  < E

26,226.2 -  518.7197348105429466  < E

25,707.48026519  < E

lower bound is 25,707.48026519

Therefore the  95% confidence interval is (25,707.480 < E < 26,744.920)

7 0
3 years ago
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