20 POINTS!!! GIVING BRAINLIEST TO BEST ANSWERS! Someone please help me with these basic Algebra 1 questions please! 4 Questions!!

Answers

Answer 1

Answer:

Answer:1. -2x^2-1 2. its c 3. -2 4. a

Step-by-step explanation:

hey

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If 283 is divided by 4 where should the first digit of the quotient be placed

Answers

First thing up, are there any fours in two? Obviously there are none. So, we would have to see if there are any fours in twenty-eight. There are seven fours in twenty-eight. Therefore, the first digit of the quotient is 7.

283 ÷ 4 = 70, 3/4
2 ÷ 4 not possible, 28 yes by 70 and 3 remainder which is 70 and 3/4 :)

Two quantities are related, as shown in the table: x y
2 10
4 9
6 8
8 7

Which equation best represents the relationship?
y = 1 over 2 x + 11
y = negative 1 over 2x + 11
y = 2x + 10
y = 2x + 11

Answers

You need to calculate it's slope.
(x₁,y₁) = (2,10) and (x₂,y₂) = (4,9)
Now,(y₂-y₁) = m(x₂-x₁)
(9-10) = m(4-2)
2m = -1
m = -1/2

Now, take any one point for calculation of b in equation;
10 = -1/2(2) + b
b = 10 + 1
b = 11

So, Equation of the line would be: y = -1/2x + 11

In short, Your Answer would be Option B

Hope this helps!

Answer:

In short, Your Answer would be Option B

Step-by-step explanation:

There are 22 students on natalies class. new reading books cost $7 each. Natalies class raised $50 washing cars. If there are 2 teachers in nautiliesclass, write and evaluate an expression to show how much more each teacher will have to pay to buy the new book

Answers

22*7 = 50 + 2x (22*7 is the total cost for all students, and the other side needs to match that cost)

evaluate:
22*7 = 50 + 2x
154 = 50 + 2x
104 = 2x
52 = x

Each teacher will have to pay $52.

Since 22 multiplied by 7 is equal to 154$ and the class has already raised 50$ you are still left with 104$ to pay . Sice there are 2 teachers you would divide 104$ by 2 and end up with 52$ .... Each teacher would have to pay 54$

Which equation best represents the line that is parallel to 3x -4y=7 and passes through the point (-4,-2)? Select two options.

Answers

Answer:

The equation that best represents the line that is parallel to 3x - 4y = 7 and passes through the point (-4, -2) is y = 3/4x + 1.

Step-by-step explanation:

3x - 4y = 7 and (-4, -2)

First, solve for y in the equation:

3x - 4y = 7

-4y = -3x + 7

4y = 3x - 7

y = 3/4x - 7/4

m = 3/4 (This will be the slope of the parallel line.) and (-4, -2)

Use the point-slope equation to find the equation that will best represent a parallel line:

y − y1 = m(x − x1)

y - -2 = 3/4(x - -4)

y + 2 = 3/4x + 3 (the 4s cancel out)

(3/4 x 4/1 = 3)

y = 3/4x + 1

The graph that I attached is what these two equations would look like graphed. I am not sure what you mean by two options, I'm sorry!

Erica and tim each use their cell phones to send texts and make phone calls. Erica sent 18 texts and made 6 calls today. Tim sent 12 text and made 4 calls today. Which of the following best compares Erica’s and Tim’s text and calls?

Answers

Answer:

Erica has 6 more text then Tim and 2 more calls then Tim.

Step-by-step explanation:

What i did was 18-12 because those are both text and that was 6 so Erica has 6 more

Then i did 6-4 =2 and those where both of the calls so Erica has 2 more calls then Tim.

What is 1 21/50 in a percentage?

Answers

1 21/50
= 1+ 21/50
= 50/50+ 21/50
= 71/20
= 71/20* 100%
= 142%

The final answer is 142%~