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3 years ago

PLS HELP ME ASAP!!!!!!!!! ill give thanks, and five stars

Mathematics

2 answers:

docker41 [41]3 years ago

7 0

Answer:

Step-by-step explanation:

The additive inverse property states that if we have a number a, then:

$a+(-a)=0$

Here, we have the equation:

$2x=542$

And we divide both sides by 2:

$2x/2=542/2$

To acquire:

$x=271$

So, we did not use the additive inverse property since we didn't add anything.

Instead, we used the division property of equality by dividing both sides by 2.

So, our answer is A.

And we're done!

Zarrin [17]3 years ago

6 0

It’s A, I’m pretty sure.

AND ALSO I LOVE LOVE LOVE UR PFPPPP IS THAT KENMAAA

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20 POINTS HELP ME PLEASE How many solutions does the system have

finlep [7]

Answer:

Two

Step-by-step explanation:

x² + 4 = 4x + 1

x² - 4x + 3 = 0

x² - 3x - x + 3 = 0

x(x - 3) - (x - 3) = 0

(x - 3)(x - 1) = 0

x = 1, 3

y = 4(1) + 1 = 5

y = 4(3) + 1 = 13

Two solutions: (1,5) (3,13)

3 0

3 years ago

Evaluate k(4) for the function k(x)=18−2x

KiRa [710]

Answer:

k(4) = 10

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Function Notation

Step-by-step explanation:

Step 1: Define

k(x) = 18 - 2x

k(4) is x = 4

Step 2: Evaluate

Substitute in x: k(4) = 18 - 2(4)
Multiply: k(4) = 18 - 8
Subtract: k(4) = 10

5 0

3 years ago

Pls help pls, i need this pls help

malfutka [58]

Answer:

Step-by-step explanation: a real one for the points

3 0

3 years ago

55g as a percentage of 2.2kg

Evgesh-ka [11]

Answer:

2.5%

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$\frac{x}{100} \times 2200 = 55 \\ 22x = 55 \\ x = 2.5\%$

3 0

3 years ago

James has a recipe that uses 1 1/2 cups of brown and 2 1/3 cups of flour to make 24 muffins. He has a total of 7 cups of sugar.

AURORKA [14]

Answer:

Part A: James needs 10 1/2 cups of sugar if he uses all 7 cups of flour

Part B: James will make 72 muffins if he uses all 7 cups of flour

Step-by-step explanation:

*I had an easier time figuring out part B before I figured out part A

PART B:

If the original recipe uses 2 1/3 cups of flour, and James has 7 cups of flour, I started off by dividing 7 by 2 1/3 to see how many times we can get 2 1/3 cups out of 7 cups. 7 divided by 2 1/3 = 3. Now that we know we can get 3 cups out of 2 1/3 cups, we need to multiply 3 by 24 to find out how many muffins James will get. 24 * 3 = 72

James will get 72 muffins by using 7 cups of flour.

PART A: Now we know that James is making 72 muffins. We need to find out how many cups of sugar James needs. To do that we can multiply 1 1/2 cups by 7. The product is 10 1/2 cups of sugar. Now we know that James needs 10 1/2 cups of flour if he uses all 7 cups of flour.

Hope this helps!!

7 0

3 years ago