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timama [110]
3 years ago
12

15=7-|2x| Solve for x in this absolute value equation.

Mathematics
2 answers:
DIA [1.3K]3 years ago
8 0
15=7-|2x|\\
-|2x|=8\\
|2x|=-8\\
x\in\emptyset
ivann1987 [24]3 years ago
6 0
7-|2x|=15\ \ \ \ |subtract\ 7\ from\ both\ sides\\\\-|2x|=8\\\\|2x|=-8-FALSE\\\\x\in\O\ because\ |a|\geq0\ for\ each\ a\in\mathbb{R}

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Triangle ABC is similar to DEF.
Schach [20]

Answer:

Step-by-step explanation:

Answer:

1. The scale factor here is 1.5

2. The scale factor here is 2/3

Step-by-step explanation:

Here, we shall be dealing with scales of triangles.

we have two triangles;

ABC and DEF

longest sides are in the ratio;

12 : 8

1. What scale factor translates DEF to ABC?

The ratio of the length can be beaten down to 3:2

So therefore, we can see that by multiplying the sides of of DEF by 1.5, we can arrive at the sides of ABC

So the scale factor here is 1.5

2. This is like the other way round of what we have above.

By multiplying the sides of ABC by 2/3, we shall have the sides of DEF

6 0
3 years ago
Write the equation of the line that passes through (3, 4) and 2, -1) in slope-intercept form
Marat540 [252]

Answer:

Step-by-step explanation:

(-1 -4)/(2 - 3) = -5/-1 = 5

y - 4 = 5(x - 3)

y - 4 = 5x - 15

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4 0
3 years ago
7x+2y=-19 and -x+2y=21
Fittoniya [83]
Subtract the 2 equations

     7x+2y=-19
-    -x+2y = 21
--------------------------
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7 0
3 years ago
If a drug has a concentration of 400 mg per 10 ml, how many mL are needed to give 1.5 grams of the drug?
liq [111]

40,

since

400 x 4 + 1.6 grams. which is the closest

4 x 10 = 40

4 0
3 years ago
Answer C and D please
DENIUS [597]

Answer:

C. solution:

3(3c-2) = 5(2c-1)

or, 9c-6 = 10c-5

or, -6+5 =<em> </em>10c-9c

or, -1 = 1c

Hence, c = -1.

D. solution:

5(5-2a) = 4(6-a)

or, 25-10a = 24 - 4a

or, 25-24 = -4a+10a

or, 1 = 6a

or, 1/6 = a

Hence, a = 1/6.

6 0
3 years ago
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