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3 years ago

HELP ME WITH BOTH OF THEM!! HELP

Mathematics

2 answers:

Ket [755]3 years ago

6 0

Answer:

$x \geqslant - 2$

$x < - 2$

Step-by-step explanation:

since the first one is dotted it makes it that sign and also notice the arrow. anyone that is dotted always has the line under the sign

creativ13 [48]3 years ago

3 0

The person who answer before is correct but i can explain how to get the answer. For number 1 look at the point where it is graphed (-2) notice how it is a shaded circle (unlike number 2 where it is white) so you would have > with a line underneath. It would be > because thats the direction in which the line is going. For number 2 it would be x<-2 because the arrow is going to the left so it <, it would be -2 as thats where it has been plotted and, it would NOT have a line underneath the symbol because the circle is not shaded. Hope this helps you understand better for the future!

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Veronica randomly surveyed a group of students to find out how they arrived at school that

Finger [1]

Answer:A

Step-by-step explanation:

-Long way

1.) Add all the numbers of people together (60)

2.) Divide all the students aka.540 by 60. (9)

3.) Multiply 9 by all the numbers.

=Answer for all. (Double check)

-Mental math

1.) look at chart

2.) compare 8 and 7

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=Answer of A

8 0

3 years ago

If he starts at 1 and jumps 3 units to the right, then where is he on the number line? How far away from zero is he? (explain ho

GarryVolchara [31]

Answer:

4, he is 4 spaces away from zero.

Step-by-step explanation: I know things

7 0

3 years ago

Circled one please?

Pepsi [2]

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3 years ago

Read 2 more answers

Expand (2 + a)9 using Pascal’s triangle.

Natalija [7]

Answer:

Step-by-step explanation:

The Pascal triangle is used to determine the coefficients of the terms when we expand the expression.

1 $(A + B) ^ 0$ = 1

1 1 $(A +B ) ^ 1 = 1A + 1B$

1 2 1 $(A+ B) ^ 2 = 1A^2 + 2 AB + 1B^2$

By extending the triangle, you will get the 9th row, which is your expression, of the coefficients. that is

1 9 36 84 126 126 84 36 9 1

Now, fill in AB in the gaps.

1AB + 9 AB + 36AB + 84AB + 126AB + 126AB +84AB + 36AB + 9AB + 1AB

Next, you need to go from the left to fill out the exponent of A and it will go down from 9 (the exponent of the whole thing) . That is

$1A^9B+9A^8B+36A^7B+84A^6B+126A^5B+126A^4B+84A^3B+36A^2B+9A^1B+1A^0B$

Next will be the exponent of B. this time, you go from the right and do the same with A. You can go from the left also, but go up from 0 to 9 for the exponent of B

$1A^9B^0+9A^8B^1+36A^7B^2+84A^6B^3+126A^5B^4+126A^4B^5+84A^3B^6+36A^2B^7+9A^1B^8+1A^0B^9$

The last step is just to simplify the A^0=1 and B^0 =1 at the first and the last terms.

$A^9+9A^8B^1+36A^7B^2+84A^6B^3+126A^5B^4+126A^4B^5+84A^3B^6+36A^2B^7+9A^1B^8+B^9$

Hope you can learn the method

5 0

2 years ago

A bike path is 12.5 miles. Dominic is 70% of the way to the end. How far is Dominic on the path?

stepan [7]

Answer:

8.75 miles is 70%

Step-by-step explanation:

12.5

1.25 is 10 percent

multiply that by 7

8.75 miles

3 0

2 years ago

HELP ME WITH BOTH OF THEM!! ​HELP

HELP ME WITH BOTH OF THEM!! HELP