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2 years ago

2x(x-5)-x(3+2x)=26 help me pls

Mathematics

2 answers:

makvit [3.9K]2 years ago

8 0

Hopes this helps:

Answer: x = -2

satela [25.4K]2 years ago

8 0

Answer:

x=−2

Step-by-step explanation:

hope it helps yaa

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rancho middle school has an average of 23 3/8 students per teacher write this mixed number as a decimal

Reika [66]

let's firstly convert it to an improper fraction.

$\bf \stackrel{mixed}{23\frac{3}{8}}\implies \cfrac{23\cdot 8+3}{8}\implies \stackrel{improper}{\cfrac{187}{8}}\implies 187\div 8\implies \stackrel{decimal}{23.375}$

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3 years ago

4(2x+3)=x(3+5)+12<br> Help

Karo-lina-s [1.5K]

Answer:

Step-by-step explanation:

8x + 12 = 3x + 5x + 12

8x + 12 = 8x + 12

Bringing like terms on one side

8x - 8x = 12 - 12

x = 0

7 0

3 years ago

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PLEASE HELP!!

Rashid [163]

Answer:

The answer is $10.80

Step-by-step explanation:

It goes up $0.70 every mile and the flat fee is $3.10.

The equation 3.1 + 0.7(x) when x is the number of miles traveled.

Substitute 11 for x and get 3.1 + 0.7(11).

The answer is $10.80

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3 years ago

Standard deviation of 300, 785, 670, 187, 760, 724

White raven [17]

STEP 1

Mean = $\frac{300+785+670+187+760+724}{6} = \frac{3426}{6}=571$

STEP 2

Subtract the mean from each data value then square the answer
$300-571=-271$ ⇒ $(-271)^{2} =73441$
$785-571=214$ ⇒ $(214)^{2}=45796$
$670-571=99$ ⇒ $(99)^{2}=9801$
$187-571=-384$ ⇒ $(-384)^{2} =147456$
$760-571=189$ ⇒ $189^{2}=35721$
$724-571=153$ ⇒ $153^{2} =23409$

STEP 3

Add the squared answers in STEP 2 then find the mean

$\frac{73441+45796+9801+147456+35721+23409}{6}= \frac{335624}{6}=55937.3$

STEP 4

Square root the answer in STEP 3
$\sqrt{55937.3} =236.5$

Standard deviation is 236.5

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3 years ago

8y : 10y in its simplest form

Harrizon [31]

4y:5y would be the simplest form

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3 years ago

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