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photoshop1234 [79]
4 years ago
9

La altura de un triángulo equilátero cuyo perimetro mide 45 cm ?

Mathematics
1 answer:
OLga [1]4 years ago
3 0

Search it up!!!!!!!!

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Jason's mom drove at 100 km/h for a
EastWind [94]

Answer: 0.17\ hours or 10\ minutes\ and\ 40\ seconds

Step-by-step explanation:

 For this exercise you must use the following formula:

V=\frac{d}{t}

Where "V" is the speed, "d" is the distance and "t" is the time.

Solving for "t":

t=\frac{d}{V}

You know that Jason's mom drove a distance of 160\ km at 100\ \frac{km}{h}. Then, we can say that:

V_1=100\ \frac{km}{h}\\\\d=160\ km

Then, the time is:

t_1=\frac{160\ km}{100\ \frac{km}{h}}\\\\t_1=\frac{8}{5}\ h

If she had driven 90\ \frac{km}{h}:

V_2=90\ \frac{km}{h}\\\\d=160\ km

 And the time would have been:

t_2=\frac{160\ km}{90\ \frac{km}{h}}\\\\t_2=\frac{16}{9}\ h or

Subtracting those times, you get:

\frac{16}{9}\ h-\frac{8}{5}\ h=0.17\ h or 10\ minutes\ and\ 40\ seconds

6 0
3 years ago
X + 2y = 10<br><br> y=x-4<br> Choices are:<br> (0,4)<br> (2,6)<br> (6,2)<br> (8,0) <br> Work shown
LuckyWell [14K]

Answer:

C) (6,2)

Step-by-step explanation:

Rewrite equations:

y=x−4;x+2y=10

Step: Solve y=x−4for y:

y=x−4

Step: Substitute x − 4 for y in x+2y=10:

x+2y=10

x+2(x−4)=10

3x−8=10(Simplify both sides of the equation)

3x−8+8=10+8(Add 8 to both sides)

3x=18

3x

3

=

18

3

(Divide both sides by 3)

x=6

Step: Substitute6forxiny=x−4:

y=x−4

y=6−4

y=2(Simplify both sides of the equation)

Hope this helps!

:)

5 0
3 years ago
Read 2 more answers
What is the degree of 7x^6-6x^5+2x^3+x-8
netineya [11]
6 is your degree because it is the greatest exponent in the polynomial.
7 0
3 years ago
Read 2 more answers
How could you find the number of different combinations of 6 letters in a computer password?
lord [1]
It depends on if a letter can be repeated.If yes, then the answer is:

26x26x26x26x26x26=308,995,776

If the letters cannot be repeated, then:

26x25x24x23x22x21=165,765,600
8 0
3 years ago
Can you help me please I have been stuck
xz_007 [3.2K]
1. ) 0.8 2.) 8/10 3.)8 tenths plus 8 hundredths. 4.) 8.8
6 0
3 years ago
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