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2 years ago

X = ? 17 - x = 13 Solve for x. Thanks in advance.

Mathematics

2 answers:

Alenkasestr [34]2 years ago

3 0

17 - 4 = 13.

Your Welcome. :)

devlian [24]2 years ago

3 0

To solve for x we will do the following steps. Then we will check our work. Lets do it:-

17 - x = 13
17 - 13 = x
17 - 13 = 4
x = 4

CHECK OUR WORK:-

17 - 4 = 13
We were RIGHT!!!

So, x = 4.

Hope I helped ya!!

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Segment AB is dilated from the origin to create segment A prime B prime at A' (0, 6) and B' (6, 9). What scale factor was segmen

oksano4ka [1.4K]

Answer:

The answer is "Option C"

Step-by-step explanation:

Given:

point A' and B' are: (0, 6) (6, 9)

To above points we calculate point AB that is (0,2) and (2,3)

Distance formula:

$\bold{D=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}}\\$

calcuate AB point distance:

$x_1=0\\y_1=2\\x_2=2\\y_2=3$

$D=\sqrt{(2-0)^2+(3-2)^2}$

$=\sqrt{2^2+1^2}\\\\=\sqrt{4+1}\\\\=\sqrt{5}\\$

calculating A'B' point distance:

$x_1=0\\y_1=6\\x_2=6\\y_2=9\\$

$D=\sqrt{(6-0)^2+(9-6)^2}$

$= \sqrt{(6)^2+(3)^2}\\\\= \sqrt{36+9}\\\\= \sqrt{45}\\\\= \sqrt{3\times 3\times 5}\\\\= 3\sqrt{5}\\\\$

If we divide:

$=\frac{3\sqrt{5}}{\sqrt{5}}\\\\=3$

The final answer is "3".

6 0

2 years ago

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KatRina [158]

Answer:

the answer is D. 8x - 2x²

Step-by-step explanation:

4 0

2 years ago

A 46 gram sample of a substance that is used to sterilize surgical instruments has a k-value of 0.1374. Find the substance's hal

mars1129 [50]

Answer:

$t=5.0days$

Step-by-step explanation:

Using the formula for the exponential decay that is $N=N_{0}e^{-kt}$ , we have N= $\frac{1}{2}{\times}46=23$ , $N_{0}=46$ and k=0.1374.

Thus, $N=N_{0}e^{-kt}$ becomes

$23=46{\times}e^{-0.1374t}$

$\frac{23}{46}=e^{-0.1374t}$

$\frac{1}{2}=e^{-0.1374t}$

Taking log on both sides, we get

$ln(\frac{1}{2})={-0.1374t}$

$t=\frac{ln\frac{1}{2}}{-0.1}$

$t=\frac{-0.6931}{-0.1374}$

$t=5.0days$

4 0

2 years ago

Solve the system of equations using the substitution method.

valentina_108 [34]

Multiply 3x +y =23 by -4

x+4y=4
-12x+(-4y)=-92

Add together

-11x = -88

x = 8

Plug x in to find y.

8 + 4y = 4

Subtract 8 from each sides

4y = -4

Divide by 4

y = -1

So the answer is x =8, y= -1

I hope that helps!

5 0

2 years ago

Only answer if you know how.

matrenka [14]

um, you cant anwser it because based on the picture , there isnt a full page

7 0

3 years ago