All categories

3 years ago

Expand and simplify the following 5(m – 8) - 4(m – 7)

Mathematics

2 answers:

DanielleElmas [232]3 years ago

7 0

Step-by-step explanation:

5(m – 8) - 4(m – 7)

5m-40-4m+28

m -12

Phoenix [80]3 years ago

3 0

Answer:

5(m - 8) - 4(m - 7)

= 5m - 40 - 4m +28

= m - 12

m = 12

hope it helps

You might be interested in

4) -4y= -x + 4 6) y + 3x = 3

wel

Answer:

x=16/13

y= -9/13

Step-by-step explanation:

A: -4y=-x+4

B: y+3x=3

4B: 4y+12x=12

A+4B: 12x= -x+16

-----> 13x=16

x=16/13

-4y= -16/13+4

4y=16/13-4

y=4/13-1= -9/13

4 0

3 years ago

Is the figure on the right congruent to the sample figure? EXPLAIN.

disa [49]

Yes, because they are equal and have the same measurement same size and same shape.

4 0

3 years ago

Read 2 more answers

suppose that two people standing 3 miles apart both see the burst from a firework display.after a period of time ,the first pers

Marrrta [24]

The fireworks display occur at 550.331 ft

The generic equation for a hyperbola provided by: is the best method for solving the problem in this instance.

$\frac{y^{2} }{b^{2} } - \frac{x^{2} }{a^{2} } = 1$ -

We presume that the y-axis is where the hyperbola's longer axis lies.

In this instance, the sound traveled a total of 1100 meters, and the value of a can be calculated as follows:

2a = 1100

a = 550ft

Given that the two people are 3 miles apart, we can calculate the value of c in feet as follows:

1 mile = 5280 feet

∴ 3 miles = 15840 ft = c

And this is how we may determine what b is worth:

$b^{2} = c^{2} - a^{2}$

$b^{2} = 15840^{2} - 550^{2}$

$b^{2} = 250603100$

Our equation is thus given by:

$\frac{y^{2} }{250603100 } - \frac{x^{2} }{550^{2} } = 1$

And for this case we want to find the value of x when y = 3ft=15840ft and solving for x we get,

$\frac{15840^{2} }{250603100 } - \frac{x^{2} }{550^{2} } = 1$

$\frac{15840^{2} }{250603100 } - 1 = \frac{x^{2} }{550^{2} }$

$1.001- 1 = \frac{x^{2} }{550^{2} }$

$0.001 = \frac{x^{2} }{550^{2} }$

$302865.145= {x^{2}$

x = 550.331 ft.

The fireworks display occur at 550.331 ft.

Learn more about hyperbola here :

brainly.com/question/14307125

#SPJ1

8 0

2 years ago

The temperature is 5 degrees Fahrenheit by midnight the temperature is expected to drop 15 degrees Fahrenheit What will the temp

velikii [3]

-10 degrees Fahrenheit

8 0

4 years ago

A submarine was diving at 77.1 feet per minute. Which number represents the position of the submarine in relation to the surface

klasskru [66]

First, Multiply 77.1 by 8 to find how many feet the submarine has dived.

77.1 × 8 = 616.8

Since the question is asking the submarines position "in relation to the surface," this number needs to be negated.

616.8 ⇒ -616.8

<h2>Answer:</h2>

The submarine is at -616.80 ft in relation to the surface, so option B is correct.

5 0

4 years ago