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irina1246 [14]
3 years ago
5

Math homework help?

Mathematics
1 answer:
charle [14.2K]3 years ago
6 0
3r = 45/x= 45/x= 45 r = 45/3 = 15 mph The speed of PandD = 15 mph
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21. What is the value of x if 5:(3x+2) = 7:(5x-2).<br>A. 6<br>B. 5<br>C.7.​
KatRina [158]

Answer:

5/(3x+2) = 7/(5x-2)

<=>5*(5x-2) = 7*(3x+2) (x is not equal to -3/2 or 2/5)

<=> 25x -10 = 21x +14   (x is not equal to -3/2 or 2/5)

<=> 4x = 24                   (x is not equal to -3/2 or 2/5)

<=> x = 6 (valid)

6 0
3 years ago
(-5,3); m=2<br> What is point slope formula
ch4aika [34]

Answer:

y = 2x + 13

Step-by-step explanation:

y - 3 = 2 ( x + 5 )

y - 3 = 2x + 10

  + 3        + 3

y = 2x + 13

5 0
3 years ago
Do<br>main of ln(2x+3/×-1)
lozanna [386]
<span>so your equation  would be  2x-3=-1  then your answer would be -1

</span>
7 0
3 years ago
A. &lt; DCA<br> b. &lt; BCA<br> c. &lt; BAC <br> d. &lt; CAE
Brrunno [24]
I would say the answer is C. It has been a while since I’ve taken geometry but I am pretty sure the angle would be the middle letter.
5 0
3 years ago
Evaluate 3p^2 + 7 (3 times p to the second power plus 7), when p = 4
frosja888 [35]

Answer:

55

Step-by-step explanation:

3p²+7

= 3 ×4²+7

= 3× 16+7

= 48 +7

=55

3 0
2 years ago
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