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3 years ago

9 + 5 = x - 11how to find the x number

Mathematics

2 answers:

posledela3 years ago

7 0

9+5=x-11

14=x-11

+11 +11

24=x

astra-53 [7]3 years ago

5 0

9 + 5 = x - 11

combine like terms

14 = x - 11

add 11 to both sides

25 = x

x = 25

answer

x = 25

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MARKING AS BRAINLIEST! LAST ATTEMPT! ) show ur work

matrenka [14]

Answer:

$\sqrt{28} =\sqrt{(7)(4)} =2\sqrt{7} \\\sqrt{40} =\sqrt{(10)(4)} =2\sqrt{10} \\\sqrt{108} =\sqrt{(36)(3)} =6\sqrt{3} \\\sqrt{125} =\sqrt{(25)(5)} =5\sqrt{5}$

$-6\sqrt{81} =-6(9)=-54$

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7 0

3 years ago

Suppose that a fashion company determines that the cost, in dollars, of producing x cellphone cases is given by C(x)equalsneg

Semenov [28]

Answer:

(a)$29.95

(b)A

Step-by-step explanation:

The cost, in dollars, of producing x cellphone cases is given by:

$C(x)=-0.05 x^2+55 x.$

We are required to evaluate: $\dfrac{C(251)-C(250)}{251-250}$

$C(251)=-0.05(251)^2+55(251)=10654.95\\C(250)=-0.05(250)^2+55(250)=10625\\\text{Therefore:}\\\\\dfrac{10654.95-10625}{251-250}=29.95$

$\dfrac{C(251)-C(250)}{251-250}=\$29.95$

The value calculated above represents the additional cost to produce one more item after making 250 items.

4 0

3 years ago

Devon wants to write an equation for a line that passes through 2 of the data points he has collected. The points are (8, 5) and

ser-zykov [4K]

For this case we have the following equation:
$7x - 10y = 3
$
From here, we must substitute ordered pairs of the form:
(x, y)
If the ordered pair satisfies the equation, then it belongs to the line.
We have then:

For (8, 5):
We substitute the following values:
$x = 8

y = 5

7 (8) - 10 (5) = 3

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6 = 3$
We observe that the equation is not satisfied and therefore, this point does not belong to the line.
Since one of the points does not belong to the line, then the equation is not a good model.

Answer:
It is not a good model. One of the points does not belong to the line.

4 0

3 years ago

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Please help me solve for x

Elena-2011 [213]

Answer:

$x=49^o$

Step-by-step explanation:

We know that we are dealing with parallel lines, as there are double headed arrows on each of the lines, pointing in the same direction.

This means we can use corresponding / alternate angle laws.

We know that the angles on a straight line add up to $180^0$ , so we can solve for the angle just above the $131^o$ to try and see if that will help us.

$131 + \theta = 180$ (Our angle, added to another angle we don't know yet is 180)

Solve for $\theta$

$\theta = 49$

We can now apply the corresponding angle law, (as we have an 'F' shape), to determine that:

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4 years ago

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Can some help plzz I am stuck on this math problem!!

slega [8]

Answer:

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Step-by-step explanation:

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5x12 = 60

n= 60-8-11-12-16 n= 13

3 0

4 years ago