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maxonik [38]
3 years ago
10

Check my answer please? I'll report if you just say yeah and it's not correct lol.

Mathematics
2 answers:
Elena-2011 [213]3 years ago
7 0
Yes, set up your proportion: x/21 = 10/14
Cross multiply 14x = 210
Divide both sides by 14 and x= 15 cm
abruzzese [7]3 years ago
7 0

Answer:

Just took the test and got the correct answer (´。• ᵕ •。`) ♡

Step-by-step explanation:

Look at the image down below!!

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How much more is 8x10^9 than 2x10^3?<br><br> example: Answer is 1x10^2
swat32

Answer: 8x10 to the power of 9 = 80000000000

2x10 to the power of 3 = 2000

And I don’t know understand why you put 1x10 to the power of 2

But 1x10 to the power of 2 =100

Step-by-step explanation: Is this kind of answer you want hope this help

5 0
3 years ago
What is the solution of the equation 4(X+5)=X+8
BARSIC [14]
4 ( x + 5 ) = x + 8

4 * x + 4 * 5 = x + 8

4 x + 20 = x + 8

4 x - x = 8 - 20

3 x = -12

x = -12 / 3

x = - 4

hope this helps!
5 0
3 years ago
What is the area of a rectangle if the length is 5 inches and the width is 2/5
Lynna [10]
5/1 • 2/5 = 10/5 = 2

The area is 2 inches
8 0
3 years ago
The function f is linear. If f(2) = 2 and f(-6)=6 find f(6)
lina2011 [118]
The\ slope-intercept\ form:y=mx+b\\\\f(2)=2\to for\ x=2\to y=2\\f(-6)=6\to for x=-6\to y=6\\\\put\ in\ equation\ of\ the\ line:\\\\  -\left\{\begin{array}{ccc}2=2m+b\\6=-6m+b\end{array}\right\ \ \ |subtract\ sides\ of\ the\ equations\\----------\\.\ \ \ -4=8m\ \ \ \ \ |divide\ both\ sides\ by\ 8\\.\ \ \ \ \boxed{m=-\frac{1}{2}}\\\\put\ m=-\frac{1}{2}\ to\ equation\ 2=2m+b:\\\\2=2\cdot(-\frac{1}{2})+b\\2=-1+b\ \ \ \ |add\ 1\ to\ both\ sides\\\boxed{b=3}\\\\\boxed{\boxed{y=-\frac{1}{2}x+3}}

therefore:f(x)=-\frac{1}{2}x+3\Rightarrow f(6)=-\frac{1}{2}\cdot6+3=-3+3=0\\\\Answer:\boxed{f(6)=0}
5 0
3 years ago
Decide of the three numbers can be the measures of the sides of a triangle.
Elina [12.6K]
I believe the correct answer is B
8 0
3 years ago
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