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sattari [20]
2 years ago
10

Determine the hypothesis of the conditional statement: If my mom has to work, then I babysit my little sister. A. my mom has to

work B. my mom does not have to work C. I babysit my little sister D. I don't babysit my sister
Mathematics
2 answers:
gregori [183]2 years ago
6 0
Not sure what the question is..
Pavlova-9 [17]2 years ago
3 0
A and c i believe not quite sure what the questio is

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How many triangles can be constructed with angles measuring 60 degrees 60 degrees and 40 degrees
erma4kov [3.2K]
None, a triangle need to have angles measuring 180 degrees , its only possible if the triangle has three angles equaling 60
8 0
3 years ago
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Alexa pays 7/20 of a dollar for each minute she uses her pay-as-you-go phone for a call, and 2/5 of a dollar for each minute of
9966 [12]

Answer:

  • The system of equations is x + y = 85 and 7/20x+2/5y=31
  • To eliminate the x-variable from the equations, you can multiply the equation with the fractions by 20 and multiply the other equation by -7.
  • B-She used 60 minutes for calling and 25 minutes for data.

Step-by-step explanation:

It is always a good idea to start by defining variables in such a problem. Here, we can let x represent the number of calling minutes, and y represent the number of data minutes. The the total number of minutes used is ...

  x + y = 85

The total of charges is the sum of the products of charge per minute and minutes used:

  7/20x + 2/5y = 31.00

We can eliminate the x-variable in these equations by multiplying the first by -7 and the second by 20, then adding the result.

  -7(x +y) +20(7/20x +2/5y) = -7(85) +20(31)

  -7x -7y +7x +8y = -595 +620 . . . . eliminate parentheses

  y = 25 . . . . . . . . simplify

Then the value of x is

  x = 85 -y = 85 -25

  x = 60

7 0
3 years ago
Read 2 more answers
Which equation in point-slope form contains the point (–3, 5) and has slope –1? y + 3 = –1(x – 5) y – 5 = –1(x + 3) y – 3 = –1(x
andreev551 [17]

Answer:

y - 5 = -1(x + 3)

Step-by-step explanation:

Point slope form

y - y1 = m(x - x1) where m = slope and passing through point (x1 , y1)

In this case if the equation in point-slope form contains the point (–3, 5) and has slope –1 then the equation should be:

y - 5 = -1(x - (-3))

y - 5 = -1(x + 3)

5 0
3 years ago
HELP PLEASE KHAN ACADAMY
pychu [463]

Answer:

-45

Step-by-step explanation:

4 0
2 years ago
Write the complex number in trigonometric form a+bi. 3(cos270+I sin 270)
Darya [45]
Simply get the value of the angle and distribute away.

\bf 3[cos(270^o)+i~sin(270^o)\implies 3[0+i( -1)]\implies 3-3i
4 0
3 years ago
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