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skad [1K]
2 years ago
9

13. Solve –5√ x = –15. A. x = –9 B. x = –7 C. x = 9 D. x = 7

Mathematics
1 answer:
ddd [48]2 years ago
4 0

Domain:x\geq0\\\\-5\sqrt{x}=-15\qquad\text{divide both sides by (-5)}\\\\\sqrt{x}=3\to \boxed{x=9}\to\boxed{C.}

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Line WY is an altitude in triangle WXZ. If ΔYWZ ~ ΔYXW, what is true about XWZ? XWZ is an obtuse angle. XWZ is a right angle. XW
topjm [15]
<span>In triangle WXZ,

Line WY is an altitude (as shown in the attached picture)
Now, it is given that:
</span><span>If ΔYWZ ~ ΔYXW
</span>∠WXY = ∠WZY
<span>
Then, we can also conclude 
</span>∠WYX = ∠WYZ = 90°....(1) (because WY is the altitude)

Now, in any triangle, the sum of all the three angles is 180.

In triangle, WXY, ∠WYX = 90° (From 1)
Therefore, WXY + XWY = 90°

Similarly, in WZY.

Hence, we conclude that XWZ is a right angle.

7 0
3 years ago
Read 2 more answers
Solve the equation.<br> 2/3b - 1/3b +12= 16
Elena-2011 [213]

Answer:

b=1/12 or just 12

Step-by-step explanation:

combine like terms

1/3b +12=16

subtract 12 on both sides

1/3b=4

divided both sides with 1/3

b= 12 or 1/12

hope this helps.. :/

8 0
3 years ago
Make x the subject in the relation
tatyana61 [14]
Cant read your writing-
7 0
2 years ago
What is the value of 4 1/3÷1/9?Enter your answer as a fraction in simplest form, like this: 3/14
Vlada [557]

Hey there!

  • \bold{4\frac{1}{3}\times\frac{1}{9}}
  • \bold{4\frac{1}{3}=\frac{13}{3}}
  • \bold{\frac{13}{3}(\frac{1}{9})}
  • \bold{13\times1=13}
  • \bold{9\times3=27}
  • \boxed{\boxed{\bold{Answer:\frac{13}{27} }}}

Good luck on your assignment and enjoy your day!

~\bold{LoveYourselfFirst:)}

8 0
3 years ago
Find the least number between 200 and 500 which leaves a remainder of 3 in each case when divided by 8 ,10,12 and 30.
Nookie1986 [14]
Well, that means that it is 3 more than a common multipule of 8,10,12, and 30
find the lcm

8=2*2*2
10=2*5
12=2*2*3
30=2*3*5
lcm=2*2*2*3*5=120
times it by 2 to get it between 200 and 500
240
add 3
243 is da number
5 0
3 years ago
Read 2 more answers
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