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3 years ago

In the equation 4y +-9 =-36, is the solution y = -4 correct? True or false?

Mathematics

2 answers:

Artist 52 [7]3 years ago

6 0

Answer: False
Explanation: 4(-4) + (-9)=-36, 4•-4= -16 - 9= -25 not -36

saveliy_v [14]3 years ago

3 0

Answer: False because the answer is -6.75

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Find the length of the third side. If necessary, round to the nearest tenth. 10 14

abruzzese [7]

Answer:

9.8 units

Explanation:

According to Pythagoras theorem, the square of length of the hypotenuse is equal to the sum of squares of lengths of other two sides.

Let the third side be x units.

Then,

x² + 10² = 14²

=> x² + 100 = 196

=> x² = 196 - 100

=> x² = 96

=> x = √96

=> x = 4√6

=> x = 9.79....

=> x = 9.8 (Rounding to the nearest tenths)

So, the length of the third side is 9.8 units.

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3 years ago

Use the diagram below to finish the statement.<br> The measure of angle A is

Kobotan [32]

Answer:

Step-by-step explanation:

that should be the answer

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3 years ago

The scale on a trail map is 0.5 cm : 1 km. The straight distance between 2 huts on the trail is 16.9 cm. What is the actual dist

sesenic [268]

We have been given that the scale on a trail map is 0.5 cm : 1 km. The straight distance between 2 huts on the trail is 16.9 cm. We are asked to find the actual distance between 2 huts.

We will use proportions to solve our given problem.

$\frac{\text{Actual length}}{\text{Scale length}}=\frac{\text{1 km}}{\text{0.5 cm}}$

$\frac{\text{Actual length}}{\text{16.9 cm}}=\frac{\text{1 km}}{\text{0.5 cm}}$

$\frac{\text{Actual length}}{\text{16.9 cm}}\times \text{16.9 cm}=\frac{\text{1 km}}{\text{0.5 cm}}\times \text{16.9 cm}$

$\text{Actual length}=\frac{\text{1 km}}{\text{0.5}}\times \text{16.9}$

$\text{Actual length}=33.8\text{ km}$

Therefore, the actual distance between both huts is 33.8 km.

6 0

3 years ago

Which gives an equation for the line perpendicular to y = 2/3x + 1 that contains (0, 2) * O y = 3/2x + 2 O y = -3/2x + 2 O y = 3

andrew11 [14]

Answer:

$y = -\frac{3}{2}x + 2$

Step-by-step explanation:

Equation of a line:

The equation of a line has the following format:

$y = mx + b$

In which m is the slope and b is the y-intercept(value of y when x = 0).

If two lines are perpendicular, the multiplication of their slopes is -1.

Contains (0, 2)

This means that $b = 2$ . So

$y = mx + 2$

Finding the slope:

Perpendicular to y = 2/3x + 1 means that:

$\frac{2m}{3} = -1$

$2m = -3$

$m = -\frac{3}{2}$

$y = -\frac{3}{2}x + 2$

7 0

3 years ago

What is formula of a recatangle prism

Sonja [21]

Base x Height would be the formula of a rectangular prisim

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3 years ago