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2 years ago

-7 = -1 + x/3, solve and explain with an algebraic property

2 answers:

4 0

$-7 = -1 + \frac{x}{3}$

Multiply both sides by 3 :

$-3*1 + 3* \frac{x}{3} = -3*7$

Refine:

$x - 3 = -21$

$x = - 21 + 3$

$x = - 18$

hope this helps!.

jek_recluse [69]2 years ago

4 0

-7= -1+ x/3
⇒ -1+ x/3= -7 (switch side)
⇒ x/3= -7+ 1
⇒ x/3= -6
⇒ x= -6* 3
⇒ x= -18

Final answer: x= -18~

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A shortage of gold causes the price of gold wire to increase by 140%. If 10 feet of gold wire previously cost $50, what is the n

Marianna [84]

The increase in price is 140% of the original price.
The original price was 100% of the original price since 100% is a whole quantity.
Now the new price is 140% more than it was, so the new price is
100% + 140% of the old price.
100% + 140% = 240%

Now we find 240% of $50.
To find a percent of a number, multiply the percent by the number.

240% of $50 =
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= 2.4 * $50
= $120

Answer: 10 ft of gold wire now costs $120
Gold wire now costs $12 per foot.

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3 years ago

Y = x ^3 - 5x² +16x-80

Leokris [45]

Answer:

(x-5)(x^2+16)

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2 years ago

Is the circumference of all circles about 3 times greater than their diameters. and why?

stira [4]

Answer:

<h2>Yes the circumference is about times greater than their diameters</h2>

Step-by-step explanation:

We will approach this problem by doing a check

Say the diameter of a circle is 4 cm

Hence the radius is 3 cm

We know that the circumference is $C=2\pi r$

$C=2*3.142*2= 12.57cm$

The circumference is about 3 time bigger than the diameter

Let us try another case say the diameter is 6 cm

The radius is 3 cm

$C=2*3.142*3= 18.85cm$

8 0

2 years ago

37040 divided by 3600

Alex

10.3(rounded to the nearest hundredth)
10.29(Rounded to the nearest tenth)
10.2888888889 real answer

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2 years ago

Triangle DEF has vertices D(−4, 1), E(2, 3), and F(2, 1) and is dilated by a factor of 3 using the point (1, 1) as the point of

CaHeK987 [17]

Answer: $D'(-14,1);\ E'(4,7);\ F'(4,1)$

Step-by-step explanation:

Since the center of dilation is not at the origin, we can use the following formula in order to find the coordinates of the vertices of the triangle D'E'F':

$D_{O,k}(x,y)=(k(x-a)+a, k(y-b)+b)$