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3 years ago

Evaluate the expression below. a = -8, b = - 4.1, and c = 9.

Mathematics

1 answer:

wolverine [178]3 years ago

5 0

Answer:

-9+(-4.1)-(-8)

= -9-4.1+8

= -5.1

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2V2 km 2 km X A) 2V5 km C) 2 km B) 2V3 km D) 4 km HELP PLEASEE

Rasek [7]

Answer:

$x=2\sqrt3\ km$

Step-by-step explanation:

Given that,

The base of a triangle = 2 km

The perpendicular height of the triangle = $2\sqrt{2} \ km$

We need to find the value of x. It is the Hypotenuse of the triangle. It can be solved as :

$x=\sqrt{(2\sqrt{2})^2+2^2 } \\\\=2\sqrt{2+1 } \\\\=2\sqrt3\ km$

So, the value of x is equal to $2\sqrt3\ km$ .

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3 years ago

A bike rental is $20 for a day and $3 for an hour. Caroline rented a bike for 2 days and 2 hours. Write and equation you could u

wolverine [178]

Answer:

M = 20(2) + 3(2) = $46

Step-by-step explanation:

Here, we want to write an equation that could be used to find the amount of money spent

The rental charges $20 for a day and $3 for an hour

For 2 days, amount is 2 * 20 = $40

for 2 hours , amount is 3 * 2 = $6 hours

The amount Spent M will be;

M = 20(2) + 3(2) = $46

8 0

3 years ago

Write the slope-intercept form of the equation of the line with the given characteristics. Perpendicular to y = -5x + 2 and pass

natka813 [3]

The slope intercept form of a line can be expressed as,

$y=mx+c$

Here, m is the slope of the line and c is the y intercept.

Comparing the above equation with the given equation of a line y=-5x+2, we get

m=-5.

The slope of a line perpendicular to line with slope m is -1/m.

Hence, the slope of line perpendicular to y=-5x+2 is,

$m_1=\frac{-1}{m}=\frac{-1}{-5}=\frac{1}{5}$

The new line is given to be passing through point with coordinates (x1, y1)=(3, -1).

The point slope form of a line passing through point with coordinates (x1, y1)=(3, -1) and having slope m1 is,

$\begin{gathered} y-y_1=m_1(x-x_1) \\ y-(-1)=\frac{1}{5}(x-3) \\ y+1=\frac{1}{5}x-\frac{3}{5} \\ y=\frac{1}{5}x-\frac{3}{5}-1 \\ y=\frac{1}{5}x-\frac{3-5}{5} \\ y=\frac{1}{5}x-\frac{8}{5} \end{gathered}$

Therefore, the slope-intercept form of the equation of the line perpendicular to y = -5x + 2 and passing through (3,-1) is,

$y=\frac{1}{5}x-\frac{8}{5}$

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2 years ago

Which value represents a number that has a distance of 4 units from 0 on a number line

Gre4nikov [31]

The answer is A. -4

It wouldn’t be the other answers bc:

square root of 4 is 2

0.4 is not equal to 4

1/4 is 0.25

4 0

4 years ago

Read 2 more answers

Please save me from this death trap

Marina CMI [18]

Answer:

D) 3.9 units

Step-by-step explanation:

1.2 -(-2.7)

= 1.2 + 2.7

= 3.9

The answer is D) 3.9 units.

6 0

2 years ago