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myrzilka [38]
3 years ago
8

William solved the equation 5 + 14a = 9a - 5, but he is not sure he solved it correctly. His work is shown below. Did he solve i

t correctly? If not, on which step did William make his first mistake?
Step 1: 5+ 4a = 94 - 5
Step 2. 5+ 5a=.5
Step 3: 5a = 0
Step 4: a=0

A.Step 3
B. Step 2
C. Step 1
D. Step 4
E. William did not make a mistake. ​
Mathematics
2 answers:
notka56 [123]3 years ago
6 0

Answer:

Yes it looks correct but that is just me

Step-by-step explanation:

Lena [83]3 years ago
6 0

Answer:

C

Step-by-step explanation:

This is the correct solution.

5 + 14a = 9a -5

14a - 9a = -5 -5

5a = -10

a=-10/5 = -2

Therefore, a = -2

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Consider U = {x|x is a real number}. A = {x|x ∈ U and x + 2 > 10} B = {x|x ∈ U and 2x > 10} Which statements are true? 5 ∉
-Dominant- [34]

x+2 > 10 solves to x > 8 after we subtract 2 from both sides

So set A is the set of real numbers that are larger than 8. The value 8 itself is not in set A. The same can be said about 5 as well.


Set B is the set of values that are larger than 5 since 2x > 10 turns into x > 5 after dividing both sides by 2. The value x = 5 is not in set B since x > 5 would turn into 5 > 5 which is false. The values x = 6, x = 8, and x = 9 are in set B.


----------------


Summarizing everything, we can say...

5 is not in set A. True

5 is in set B. False

6 is in set A. False

6 is not in set B. False

8 is not in set A. True

8 is in set B. True

9 is in set A. True

9 is not in set B. False


5 0
3 years ago
Read 2 more answers
-5.73q = 97.41 q= please help me???
jek_recluse [69]

First Divide both sides by -5.73

-5.73q/-5.73=97.41/-5.73

Answer: q=-17

7 0
3 years ago
Please help this is due at 11:59
ANTONII [103]

Answer:

i believe the answer is c

Step-by-step explanation:

tbh i dont have to explain cause you mainly have to just look at the graph

6 0
3 years ago
Read 2 more answers
The area of a circle is increasing at the rate of pi cm^(2)/min. At what rate is the radius increasing when the area is 4pi cm^(
Vikentia [17]
This problem deals the rate of change.
For the formula of the area of a circle, we differentiate both sides with respect to time t.
(A = πr^2) d/dt
dA/dt = 2πr (dr/dt)

Since we don't know yet the radius r, the area of a circle is given.
A = πr^2
r^2 = A/π = 4π/π
r^2 = 4
r = 2 cm

Therefore, the rate of the radius is
dA/dt = 2πr (dr/dt)
dr/dt = (dA/dt)/(2πr)
dr/dt = π/(2π*2)
dr/dt = 0.25 cm/min

Hope this helps.
3 0
3 years ago
Find the domain and range pls!
skad [1K]
Domain should be, (-♾️,♾️)
And range should be, (-♾️, 2)

If you ment something other then this please message me so I can help!
4 0
2 years ago
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