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uranmaximum [27]
3 years ago
13

I need help and the steps to this problem

Mathematics
2 answers:
g100num [7]3 years ago
8 0
The answer would be letter D
andrew-mc [135]3 years ago
4 0

The answer will be (D)

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The diffrence of twice a number and 3 is -21
Alika [10]

Answer:

x = - 9

Step-by-step explanation:

Step 1:

2x - 3 = - 21    Equation

Step 2:

2x = - 18     Add 3 on both sides

Step 3:

- 18 ÷ 2    Divide

Answer:

x = - 9

Hope This Helps :)

8 0
3 years ago
256= blank to the power of 4
Andrei [34K]

Answer:

4

Step-by-step explanation:

256 = x^4

Take the 4th root of both sides.

4^√256 = 4^√x^4

<u>4 = x</u>

8 0
3 years ago
Read 2 more answers
Does anyone know how to do this?
dezoksy [38]
It is 45 because angle EBC is congruent to CDE (x) because of a rule called alternate angles. so x= 45°
8 0
3 years ago
Read 2 more answers
Help me for brainliest
love history [14]
It’s A

0.2 recurring
7 0
2 years ago
Solve the system by the substitution method. Show your work. 2y - x = 5, x2 + y2 - 25 = 0
Anna71 [15]
Subsitution

2y-x=5
minus 2y both sides
-x=5-2y
times -2 both sides
x=2y-5

subsitute 2y-5 for x in other equation

(2y-5)²+y²-25=0
expand
4y²-20y+25+y²-25=0
5y²-20y=0
factor
5y(y-4)=0
set to zero

5y=0
y=0

y-4=0
y=4


subsitute back

for y=0
x=2y-5
x=2(0)-5
x=-5
one solution is (-5,0)

for x=4
x=2y-5
x=2(4)-5
x=8-5
x=3
one solution is (3,4)




the 2 soltuions are (-5,0) and (3,4)
8 0
3 years ago
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