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Nataly_w [17]
3 years ago
6

On a piece of paper, graph yz -2x - 2. Then determine which answer choice

Mathematics
1 answer:
alukav5142 [94]3 years ago
3 0

Answer:

B

Step-by-step explanation:

y≥-2x-2

put x=0,y=0

0≥-2

which is true.

so (0,0) lies on it.

graph is a solid line.

so B satisfies it.

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please look at the problem and help. I tried to ask my teacher for help earlier but she ignored me so please don't ignore this.
Alchen [17]
36*40+36*40-6*6=2844ft^2

we had to subtract the area of the closet so it wasn't counted twice :P
8 0
3 years ago
What is the area of a triangle whose side is 17 meters long​
Lunna [17]

Answer:

125.141

Step-by-step explanation:

Assuming that this is an equilateral triangle, I am going to divide this triangle in half to get a right triangle.

17 is our hypotenuse

17/2 = 8.5, this is one of our legs

The other leg is our height, which we will find.

We use Pythagoras Theorem to find the height/leg: a^{2} +b^{2} =c^{2}

17^{2} -8.5^{2} = 216.75

\sqrt{216.75} = 14.72243186

Now, we use another formula to find the area of the triangle: \frac{Base*Height}{2}

14.72243186 × 17 = 250.2813416

250.2813416 ÷ 2 = <u>125.1406708</u>

8 0
3 years ago
When i have a negative plus a positive of the same number , what is that called ?
Lady bird [3.3K]

Answer: Integer

Step-by-step explanation: The answer would be integer

3 0
3 years ago
Sphere and a cylinder have the same radius and height. The volume of the cylinder is 64 meters cubed.
Mrrafil [7]

Answer:

C. 128/3 meters cubed

Step-by-step explanation:

The volume of a cylinder is denoted by: V=\pi r^2h, where r is the radius and h is the height. We know it's equal to 64, so we can set that equal to V:

V=\pi r^2h

64=\pi r^2h

We know that the sphere and cylinder have the same height and radius. However, the "height" of a sphere is actually the same as its diameter, which is twice its radius. Then, we can replace h in the above equation with 2r:

64=\pi r^2h

64=\pi r^2*2r=2\pi r^3

\pi r^3=64/2=32

Now, the volume of a sphere is denoted by: V=\frac{4}{3} \pi r^3, where r is the radius. From above, we know that \pi r^3=32, so we can plug this into the equation:

V=\frac{4}{3} \pi r^3

V=\frac{4}{3} *32=128/3

Thus, the answer is C.

4 0
3 years ago
Read 2 more answers
How to explain math problems to 3rd grader
hjlf

Answer:


Step-by-step explanation:

This is a super question and it is an excellent exercise for you. When I was teaching, once every term, I would ask my physics class to explain acceleration to a 7 year old. The stats favored the older women (mothers) who took the class. Almost none of the guys could do it. Here's why.

  • The sentences had to be very short. They were barely 6 or 7 words long. They were complete sentences.
  • The examples used had to be very simple. The secret to those mother's answers was they invariably picked something like a stop sign. They all knew that and they always got it right for those reasons.

You are trying to teach a seven or eight year old. Believe it or not, the first thing you have to do is check and see if they know their facts. Can they do 7+8 or 9+ 6 without hesitancy. If they can do those facts do they know the multiplication facts. 4 * 5 etc. They must know those things cold, or you are wasting your time. Don't ask me why. But you can't go on without those 2 fact types solid.

I take it you are trying to do word problems. The best thing you can do is teach them to read.

A man has a dime and a nickel and a penny. How much money does he have? Us a marker to underline the key statement.

a dime,

a nickel

a penny should be underlined. Don't ask for an answer - yet.

======

Keep doing this problem over and over. You are not trying to get an answer. You are trying to get them to understand how to read a question

A person has just less than 4 quarters just less than 5 dimes and just less than 4 nickels. How many coins does he have. That's an important question because the grade three-er is going to have to know what less means.

That should get you started.

7 0
3 years ago
Read 2 more answers
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