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liubo4ka [24]
3 years ago
7

How are the expressions 8-15 and 8+(-15) different

Mathematics
2 answers:
scoray [572]3 years ago
4 0

Answer: the second problem has a negative number and the first one has all positive numbers

Step-by-step explanation:

When you have a number in parentheses with a subtraction sign that number is negative

Anna007 [38]3 years ago
3 0

I don't think there is any difference, because 8-15=-7, and 8+(-15)=-7, because if you remove the parentheses, you will also get 8-15.

Please mark brainiest! Will really really appreciate it!

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Please need help i need help i need help
xeze [42]

Set each expression from the parentheses equal to 0 separately like so:

Equation 1: x - 4 = 0

Equation 2: -5x + 1 = 0

Now for each equation solve for x!

Equation 1:

x +(- 4 + 4) = 0 + 4

x = 4

Equation 2:

-5x +( 1-1) = 0 - 1

-5x/ -5 = -1 / -5

x = 1/5

Check:

(4 - 4)(-5*4 + 1)

(0) (-20 + 1)

(0) (-19)

0 = 0 -------------------------> correct!

(1/5 - 4)(-5 * 1/5 + 1)

(-19/5)(-1 + 1)

(-19/5)(0)

0 = 0 -------------------------> correct!

smaller x = 1/5

larger x = 4

Hope this helped!

8 0
3 years ago
Read 2 more answers
Given: ZBECis a right angle<br> Prove: ZAEB and ZCED are complementary
MrRissso [65]
2x77}{x} theis way is the best answee
8 0
2 years ago
Please help me!!!!!!
Aleks04 [339]

Answer:

first put the numbers on the lines then plot the points that are given

Step-by-step explanation:

first with the numbers of the line then plot the points that are given and you will find the slope and y-intercept of the equation

8 0
3 years ago
A solid cylindrical metal is melted and recast into cubes of metal of sides 3cm . The base radius of the initial cylindrical met
Orlov [11]

Answer:

Approximately 809 cubes will be made

Step-by-step explanation:

To calculate the number if cubes to be made, we shall need to calculate the volume of both shapes

The volume of the cubes can be calculated using the formula L^3 = 3 * 3 * 3 = 27 cm^3

For the cylinder, the formula of the volume to use is

V = π * r^2 * h

The radius here is 10.5 cm and the height is 63 cm

V = 22/7 * 10.5^2 * 63 = 21,829.5 cm^3

The number of cubes that can be made is calculated by dividing the volume of the cylinder by that of the cube

That is 21,829.5/27 = 808.5 which is 809 to the nearest whole number

6 0
3 years ago
Find the slope of the points: (-5,10)(-3,0)(0,1)(4,-4)
klasskru [66]

Answer:

figure it out

Step-by-step explanation:

Pick two point and do 10-0 over -5+3 and you get your slope

3 0
2 years ago
Read 2 more answers
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