3 years ago

five times the difference of twice a number and three, decreased by the sum of the number and eight, equals thirteen

Mathematics

1 answer:

trapecia [35]3 years ago

7 0

5x(2y-3)-(y+8)=13 I believe this is correct

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Students are comparing their heights jose is 4 1/6 feet tall lee is 4 1/4 feet tall judi is 4 1/12 feet tall and sammy is 4 2/3

klemol [59]

Sammy is the tallest one because he is 4.667 feet tall

6 0

3 years ago

Read 2 more answers

The points ????(0,0), ????(−4,1), ????(−3,5), and ????(1,4) are the vertices of parallelogram OABC Is this parallelogram a

gavmur [86]

Answer:

Yes, parallelogram OABC is a rectangle.

Step-by-step explanation:

The vertices of a parallelogram are O(0,0), A(-4,1), B(-3,5) and C(1,4).

A parallelogram is a rectangle if its any two adjacent sides are perpendicular to each other.

product of slopes of two perpendicular lines is -1.

Formula for slope is

$Slope=\dfrac{y_2-y_1}{x_2-x_1}$

Using the formula we get

$m_{OA}=\dfrac{1-0}{-4-0}=-\dfrac{1}{4}$

$m_{AB}=\dfrac{5-1}{-3-(-4)}=-\dfrac{4}{1}=4$

$m_{OA}\times m_{AB}=-\dfrac{1}{4}\times 4=-1$

It means OA is perpendicular to AB.

Since two adjacent sides are perpendicular, therefore the given parallelogram OABC is a rectangle.

6 0

3 years ago

Hi I need to know what 3 5\16 is as a decimal

Ivahew [28]

$3 \frac{5}{16} =3.3125$

8 0

3 years ago

Pls help im rlly confused

irina1246 [14]

Answer:

the y intercept is (0,29)

3 0

2 years ago

Solve the equation by completing the square. 0=x^2-14x+46

Andru [333]

Answer:

x = 7+√(3), 7-√(3)

Step-by-step explanation:

x^2 - 14x + ___ = -46 + ___

x^2 - 14x + 49 = -46 + 49

(x-7)^2 = 3

√(3) = x-7

x = 7+√(3), 7-√(3)

6 0

3 years ago