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Juli2301 [7.4K]
3 years ago
15

Can anyone help me with my homework please

Mathematics
2 answers:
Over [174]3 years ago
7 0
1..... 8(x+6)=-64
8x+48 =-64
8x =-64-48

8x=-112
X=-112/8
x=-14....

2.....3(4-2y)=-15
12-6y=-15

-6y=-15-12

-6y = - 27
y=27/6

y=4½....

3.....8w-3w+6=41
5w=41-6
5w=35
W=35/5
w=7....

4.....9x+3+x=-77

10x=-77-3
10x=-80
x=-8...

5.....10(-x-2)=120

-10x-20=120

-10x=120+20
-10x=140
x=140/-10
x=-14...

You shouldn't have a problem with the rest now....
xxTIMURxx [149]3 years ago
6 0
I'll help you with a few to give you an idea of to solve both types of problems.

For problems 1, 3, 5, 7, and 9, you just have to distribute the number outside of the parentheses to each of the numbers inside it, like so:

1.
8(x + 6) = -64      Given
8x + 48 = -64       Multiply the 8 by both x and 6 to get rid of the parentheses
8x + 48 = -64
     - 48     -48       Subtract 48 from both sides to cancel it out from the left
8x = -112
x = -14                 Divide both sides by 8 to isolate x

3.
3(4 - 2y) = -15
12 - 6y = -15
-6y = -27
y = 4.5

Repeat this process to solve problems 5, 7, and 9.

For problems 2, 4, 6, 8, and 10, you need to combine like variable terms, like so:

2.
8w - 3w + 6 = 41     Given
5w + 6 = 41             Subtract 3w from 8w
5w = 35                   Subtract 6 from both sides to cancel it out
w = 7                       Divide both sides by 5

4.
9x + 3 + x = -77      Given
10x + 3 = -77          Add 9x and x
10x = -80                Subtract 3 from both sides
x = -8                      Divide both sides by 10

Combining like variable terms is exactly like regular addition and subtraction, except there is a variable attached to the numbers; don't let it confuse you! The other important thing to remember when solving these equations is that, when you perform a calculation, you must do it to both sides of the equation, always.

Hope this helps!
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Can someone please help me?
Irina18 [472]

I will try i had this unit last year, basically the diameter is 5 in this problem, which you multiply by pi (in this case I will use 3.14 as the shortened version since its on-going) which gives you 15.7, then you multiply that by 3 in this problem to get 47.1!

7 0
3 years ago
Read 2 more answers
For the set C= {6,8}, determine n(C).
nasty-shy [4]

Step-by-step explanation:

Hey, there!!

C = {6,8}

n(C) means cardinality of set.

We define cardinality of set as the no. of elements present in set.

It contains 2 no. of elements.

so, its cardinality is n(C) is 2.

<em><u>Hope</u></em><em><u> </u></em><em><u>it helps</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>

3 0
3 years ago
You have 132 m of fencing with which to make 2 side by side rectangular enclosures against an existing wall. If the enclosures a
Deffense [45]
The two enclosures will need three equal fences coming out from the wall and meeting another fence running parallel to the wall. If the fences coming out from the wall are x metres long the parallel fence will be (132 - 3x) metres long.
The area A = x(132 - 3x) = 132x - 3x^2
The derivative of A = zero when 132 - 6x = 0 which means the maximum area is when x = 22m
The maximum area = 22 x (132 - 3 x 22) = 1452 m^2

If you don’t know how to find derivatives then you could sketch the graph of y = x(132 - 3x).
This is an inverted parabola (hill) with x intercepts at 0 and 132/3 = 44.
The maximum point (top of the hill) is halfway between 0 and 44 I.e. 22m

Try any other value for x and the area will be smaller.
8 0
2 years ago
2. Help ASAP!!!!!!!!!!!!!!!!
ch4aika [34]

ANSWER

2 \times 2

EXPLANATION

The dimensions of a matrix is of the form:

Row \times  Column

The dimensions of the first matrix is

2 \times 3

The dimensions of the second matrix is

3 \times 2

Since the inner products are the same,the outer products give the dimensions of the product of the two matrices.

(2 \times 3)(3 \times 2) = 2 \times 2

Therefore the dimensions of the product is a 2×2 matrix.

8 0
3 years ago
Read 2 more answers
HELP me with this question PLEASE
Anuta_ua [19.1K]

Answer:

YES

Step-by-step explanation:

Why is the classmate correct?

The reason why the classmate is correct is that everything can turn 360 degrees. This means that a square, has to turn 360 degrees, and it does that by doing 90x4. This means that it has 90-degree angles, which turn 4 times. And that makes 360. That's how this is also correct. Because this classmate turned a figure 270 degrees clockwise, and also, 360-270=90, which means that turning that figure 90 degrees counter-clockwise will make it in that same position.

To check whether this is right or not, take an object, probably like a book. Then turn it 90 degrees to counter-clockwise, and note down the position, that the front of the book is now facing left, and the back of the book is now facing right. Then, turn it back to normal position, (back of the book facing you), then, turn it 3 times 90 degrees towards Clockwise, in that way, you can see, that the book turns in the same way it did when you did 90 degrees counter-clockwise!

<h2>I checked this, it's 176 words long.</h2>

Thanks!

Answered by: FieryAnswererGT

#learnwithbrainly

8 0
2 years ago
Read 2 more answers
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