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KatRina [158]
3 years ago
14

Find the number of real number solutions for the equation.

Mathematics
2 answers:
daser333 [38]3 years ago
5 0
Determinant = b² - 4ac = (-10)² + 4*1*25 = 100 - 100 = 0

So it has 1 solution.
Answer is D
DerKrebs [107]3 years ago
3 0
Hello here is a solution :
x²-10x+25 = 0
x² -2(x)(5)+5² =0
puy <span>identity  : a²-2ab+b² = (a-b)²
(x-5)² = 0
x-5 = 0
the solution is : 5</span>
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The rubbing alcohol in hand sanitizer has a half-life of 5 seconds. If there are 36 ounces initially,
vredina [299]

Answer:

about 30 seconds

Step-by-step explanation:

Alcohol sanitizer is good until the alcohol evaporates, about 30 seconds. It is a cleaner, that kills the pathogens already on your hands. If you recontaminate your hands, you need to reapply.

4 0
3 years ago
The area of a rectangular mirror is 15 7 16 square feet. The width of the mirror is 3 1 4 feet. If there is a 5 foot tall space
Vlad1618 [11]

Given:

Area of rectangle = 15\dfrac{7}{16} sq. feet.

Width of the mirror = 3\dfrac{1}{4} feet.

To find:

Whether it will fit on the wall whose length is 5 foot.

Solution:

We know that, area of a rectangle is

Area=length\times width

\dfrac{Area}{width}=length

Substituting the given values, we get

Length=\dfrac{15\dfrac{7}{16}}{3\dfrac{1}{4}}

Length=\dfrac{\dfrac{15\times 16+7}{16}}{\dfrac{3\times 4+1}{4}}

Length=\dfrac{\dfrac{240+7}{16}}{\dfrac{12+1}{4}}

Length=\dfrac{\dfrac{247}{16}}{\dfrac{13}{4}}

Length=\dfrac{247}{16}\times \dfrac{4}{13}

Length=4.75&#10;

So, length of mirror is 4.75 feet which is less than 5 feet.

Therefore, the mirror will fit on the wall.

8 0
2 years ago
PLEASE HELP!! DUE SOON!!
mr Goodwill [35]

Answer:

w

Step-by-step explanation:

7 0
2 years ago
The two triangles are similar.
prohojiy [21]
I believe it is 60 inches
3 0
2 years ago
A line passes through the point (-4,-5) and had a slope of 5/2. Write an equation in slope-intercept form
daser333 [38]

Step-by-step explanation:

as we have a point and the slope, we can start with the point-slope form and then transform.

the point-slope form is

y - y1 = a(x - x1)

(x1, y1) being a point on the line, a being the slope.

the slope-interceot form is

y = ax + b

a being the slope again, b being the y-intercept (the y value for x = 0).

so, we have

y - -5 = 5/2 × (x - -4)

y + 5 = 5/2 × (x + 4) = 5x/2 + 5×4/2 = 5x/2 + 10

y = 5x/2 + 5

or

y = (5/2)x + 5

and this is already the slope-intercept form. all done.

4 0
1 year ago
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