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Arlecino [84]
3 years ago
11

What is 8×∙(−7)∙3 = Because I need it right now for my HOMEWORK, so if you know the answer please tell me what it is.

Mathematics
1 answer:
Romashka [77]3 years ago
3 0

Answer:

-168

Step-by-step explanation:

8 × -7 × 3

-56 × 3

-168

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Help please hurry need help
Misha Larkins [42]

Answer:

1: D

2: B

3: y=-4x+22

4: y=-8x+26

Step-by-step explanation:

1: Parallel lines have the same slope, and the only one with a slope of 3x is D

2: Perpendicular lines have an opposite slope, so a line with a slope of -1/2 would be 2, so you just flip the number and add or take away a negative sign, depending on the original slope

3: Like I said before, perpendicular lines have an opposite slope, so the slope would be -4. After you've figured that out, you just plug in the numbers given to you (and remember, x is first, y is last)

Plug in: 6=-4(4)+b

You would then solve for b.

6=-16+b

22=b

Then plug that into y=mx+b, with m being the slope (-4) and b being the y intercept (22)

4: The process for finding parallel and perpendicular lines is very similar, except you don't have to change the slope.

Plug in: 10=-8(2)-b

10=-16+b

26=b

Again, plug that into the equation y=mx+b

Hope I could be of help! Sorry if it doesn't make sense, this is my first time on this website.

5 0
3 years ago
What is x in .80x+30=1.20x+14
Sonja [21]

Answer:

x =  40

Step-by-step explanation:

.80x + 30 = 1.20x + 14

<u>-.80x        = -.80x        </u>

          30 = .4x  + 14

        <u>  -14 =         -14</u>

           16 = .4x

            16/.4  = .4/.4x

              40    =  x

       

3 0
2 years ago
Joey overdraw his account by $48 and has to pay an additional $10 fee. How much does he need to deposit into his account to reac
gogolik [260]

Answer:i believe 58

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Cos t(sec t - cos t)<br><br> simplify the expression
fiasKO [112]
Remember:
sec t=1/cos t
sin²t+cos²t=1            ⇒sin²t=1-cos² t

Therefore: 
cos t(sec t- cost)=(cos t* sec t)- cos² t=(cos t * 1/cos t)-cos² t=1-cos²t=sin² t

Answer: cos t(sec t-cos t)=sin² t

7 0
3 years ago
What type of quadrilateral has the vertices A(3 , 6), B(3 , 3), C(6 , 3),and D(6 , 6)
Law Incorporation [45]

Answer:

It is a square.

<h3>Step-by-step explanation:</h3>

Background:

With this, lets find the distance between each of the shape's points, in order to find which shape it is.

Here's the distance formula, its a bit overkill for what you're doing right now, but it may help you with questions later on.

d=√(x2​−x1​)2+(y2​−y1​)2

Process:

​So with this, compare the distance between each of the points. With Point A, it is (3, 6) with Point B it is (3,3). The change between these two points is down 3.

Next, with Point B (3,3) and Point C (6,3). The change between these two points is right 3.

Then, with Point C (6,3) and Point D (6,6). The change between these two points is up 3.

Last, with Point D (6,6) and Point A (3,6). The change between these two points is left 3.

Reasoning:

From this, we can see that all of the distance lengths are 3 units and that each of them create 90 degree angle turns*.

*You can find this by noting that the total amount of a rotation is 360 degrees, so when you change walking from up to the right, you are turning 90 degrees to do so.

Answer:

With this information in mind, it can be named a square given the definition of square:

"A regular quadrilateral, which means that it has four equal sides and four equal angles."

<em>https://en.wikipedia.org/wiki/Square</em>

4 0
2 years ago
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