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zalisa [80]
3 years ago
15

Solve this equation -2(2x - 2) = -4(2x + 4

Mathematics
2 answers:
Gwar [14]3 years ago
6 0

Answer:

I believe the answer is x= -5

sveta [45]3 years ago
4 0

Answer:

x=-5

Step-by-step explanation:

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Right triangle similarity: Solve for x and y
OleMash [197]

Answer:

x=4\sqrt{5},y=8\sqrt{5}

Step-by-step explanation:

sin∠SRT = sin∠TSV,

SO  \frac{x}{20} =\frac{4}{x}, x^{2}=80,x=\sqrt{80} =4\sqrt{5};

In the same way:

sin∠RSV = sin∠RTS,

SO \frac{16}{y} =\frac{y}{20},y^{2}=320,y=8\sqrt{5}

7 0
3 years ago
HELPPPPPPP PLEASEEE
spin [16.1K]

Answer:

y = - \frac{5}{4} x - \frac{13}{4}

Step-by-step explanation:

The equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

y + 6 = \frac{4}{5}(x - 5) ← is in point- slope form

with slope m = \frac{4}{5}

Given a line with slope m then the slope of a line perpendicular to it is

m_{perpendicular} = - \frac{1}{m} = - \frac{1}{\frac{4}{5} } = - \frac{5}{4}

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Here m = - \frac{5}{4} , thus

y = - \frac{5}{4} x + c ← is the partial equation

To find c substitute (- 1, - 2) into the partial equation

- 2 = \frac{5}{4} + c ⇒ c = - 2 - \frac{5}{4} = - \frac{13}{4}

y = - \frac{5}{4} x - \frac{13}{4} ← equation of perpendicular line

3 0
3 years ago
Read 2 more answers
What repeating decimals is equivalent to -5 1/9
photoshop1234 [79]
5.1 and the “1” is repeating
4 0
3 years ago
Read 2 more answers
In a college of exactly 2740 students, exactly 55 % are male. what is the number of female students? express your answer as an i
andrew11 [14]
1233 students are male because 2740* .45 (45%) = 1233
3 0
4 years ago
If the discriminant of a quadratic equation is 10, how many solutions does the equation have?
Sunny_sXe [5.5K]

Answer:

C. 2

Step-by-step explanation:

If the discriminant is >0 we have 2 real solutions

If the discriminant is =0 we have 1 real solutions

If the discriminant is <0 we have 2 complex solutions (no real solutions)

since 10>0 we have 2 real solutions

3 0
3 years ago
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