Please help I will mark brainliest

Please Help I Will Mark Brainliest

Answers

Answer 1

Answer:

a)(2x+1)² - 3

4x² + 4x + 1 - 3

4x² + 4x - 2

4(-2)² + 4(-2) - 2

16 - 8 - 2

6 (final answer)

b) 4(3)² + 4(3) - 2

36 + 12 - 2

46 ( final answer)

c) 2(x²-3) + 1

2x² - 6 + 1

2(3)² - 5

18 - 5

13(final answer)


Related Questions

Suppose that y varies directly with x and y = 12 when x = -2. What is x when y = -6?

Answers

X=1

Explanation:
Conduct a ratio, -2/12=x/-6

You have to find the x in this ratio so you will multiply -2 and -6 together, and multiply 12 and x together and make them equal to eachother. It would look like this.
(-6)(-2)=12x
12=12x
x=1

I hope this is right and I’m sorry if I’m wrong:((

Which decimal has the greatest value ? 0.2 , 0.27 , 0.029 , 0.231

Answers

Answer:

0.27

Step-by-step explanation:

Greatest decimal value is 0.27

What is decimal value?

Decimals are based on the preceding powers of 10

Given decimal values are

0.2,0.27,0.029,0.231

Order the decimal numbers from low to high

0.029<0.2<0.231<0.27

Hence, the greatest decimal value is 0.27

Learn more about decimal value here

https://brainly.com/question/19802955

#SPJ2

The set of integers from -3 to 3

Answers

Answer:

-3, -2, -1, 0, 1, 2, 3

Step-by-step explanation:

I am pretty sure you are trying to ask this but don't mind if it's not. If it's not just ignore it.

-3 is the smallest, so you go see the integers above it that are equal or less than 3.

Integers are numbers that can be negative or positive, but cannot be a decimal, square root, X and more.

So then the answer should be

-3, -2, -1, 0, 1, 2, 3

A 20 ft tall ladder standing next to a statue casts a 12 ft shadow. If the statue casts a shadow that is 9 ft long then how tall is it?

Answers

Given that,

Length of the ladder = 20 ft

It casts a 12 ft shadow

To find,

If the statue casts a shadow that is 9 ft long then how tall is it?

Solution,

Let the ladder be x ft tall.

20 ft tall ladder = 12 ft shadow

9 ft tall ladder =

[tex]\dfrac{20}{12}\times 9\\\\=15\ ft[/tex]

Hence, the required length is 15 ft.

A group of students are standing in rows. There are as many students in a row as there are rows. If there are 64 students in the group, how many students are standing in pach row?
A. 4
B 6
C. 8
D 12.​

Answers

Answer:

B..im pretty sure

Step-by-step explanation:

First it cant be D because 12 x __ = 64. There is no whole number multiplied by 12 that equals 64. So cross that out. then it's not B because 6 x ___ = 64. So also cross that out. the only thing u have left is 4 and 8. Then u can cross out A because the group of students has to be the same number of rows. Which is 8 x 8 aka B. The answer is B

Answer:

B

Step-by-step explanation:

I WILL GIVE BRAINLIST!
Showthat (1+i)2 = 2i

Answers

Answer:

(1+i)2=2i

Step-by-step explanation:

Since the 2 is on the outside of the) then that means it is multiplying and if you multiply 1x2 it will equal.2

Then if you were to multiply 2 x the i it will get 2i then you add it to get 2i

Answer:

Use formula (a + b)² = a² + 2ab + b²

(1 + i)² =1² + 2*1*i + i² =1 + 2i + (-1) =2i

Clara buys a sweater that is on sale for 1/4 off She says the total amount she
will pay will be equal to 3/4 of the original price of the sweater.
Is she correct?

Answers

I believe she is but I’m not entirely sure so maybe do some work on it

PLease im almost out of time

Answers

There is no question so currently, I am unable to help you.

Lauren saves 30% of her paycheck to purchase the iPhone 12. She earns $325 per paycheck. How much will Lauren have for her iPhone if she has saved from the first 2 paychecks

PLS HELP

Answers

Answer:

She will have saved $195

Step-by-step explanation:

If we had her two paychecks together she will have saved $650.

30% of 650 = 195

We get this by taking 650 times .3

Rashad has 24 Almonds and 32 walnuts for making snack bags. he wants to make as many snack bags as possible and wants each bag to have the same amount of almonds and walnuts. What is the largest number of snack bags he could make

A.3 bags

B.4 bags

C. 8 bags

D. 16 bags

Answers

This is your perfect answer

3x-5y=22 y=-5x+32 what is the value of x

Answers

Here you goo:))) god

What is a reasonable amount of Miles on a used car that you are planning on purchasing

Answers

Answer:

1000 or more

Step-by-step explanation:

because the motor is is good shape

share $150 among John, mary and Sarah so that each of the two girls receives twice as much as John​

Answers

Answer:

60 dollars to the two girls each, and 30 dollars to John.

Step-by-step explanation:

If the two girls have 60 dollars (each), then that is twice as much as 30.

60 + 60 = 120.

120 + 30 = 150.

PLEASE HELP I GIVE BRAINLIEST

Answers

Answer:

y = 11

Step-by-step explanation:

Perimeter = 6 + 5y + y + 2 + 4y + 3

                = 10y + 11

10y + 11 = 121

10y = 121 - 11

     = 110

y = 110 ÷ 10

y = 11

can you help me with this question please

Answers

Answer:

correct answer it's A

give me a like at least please

Solve for x. Triangles below are similar.

a) 13
b) 10
c) 4
d) 3

Answers

Answer:

the answer is 4 (option C)

Step-by-step explanation:

Since the triangles are similar, and in triangle UTV both sides are equal, we can consider QTR also has two equal sides.

therefore, the equation forms:

13x + 3 = 55

13x = 55 - 3

13x = 52

x = 52/13

x = 4

1 15/16 divided by 7/8

Answers

Answer:

Your answer is 2 2/7

What is the solution for this inequality?

need help fast please!​

Answers

Answer:

[tex]x\geq -4[/tex]

Step-by-step explanation:

[tex]-10x\leq 40[/tex]

divide by -10, which means you need to flip the inequality sign since youre dividing by a negative number

[tex]x\geq -4[/tex]

Answer:

The anwer is D

Step-by-step explanation:

up up up......

Perform the indicated operation.
1 1/7x 2 4/5

Answers

Explanation: none




Answer: The answer would be 3.2

Help please! This has to do with the Pythagorean theorem.

Answers

Answer:15.62 units

Step-by-step explanation:

just the two legs squared = diagonal squared, so then square root the diagonal so u get a real number

HELPPPPPPPPPPPPPPPPPPPPPPPPPPPHEL

Answers

Answer:

15 degrees

Step-by-step explanation:

90-75= 15

........

Hurry and anwser plz

Answers

Answer:

D

Step-by-step explanation:

103+103=206

360-206=154

154 divided by 2 equals 77 degrees aka D.

Hope this helped! :)

the answer should be D

What is the equation of the line shown in the graph below? *

Answers

Answer:

y=1/2x−2

Step-by-step explanation:

if you find the 2 point that touch the y and x-axis on the graph, (4,0) and (0,-2), and put it in y=mx+b formula, you get the answer.

7 (x+y) - 7 x with all the steps plz

Answers

Answer:

7y

Step-by-step explanation:

7x+7y-7x=0+7y=7y

Answer:

7y

Step-by-step explanation:

7(x+y)-7x  - Distribute 7 through the peretheses

7x+7y-7x  - since two opposites add up to 0, remove them from the             expression

= 7y

–sin2(x) = cos(2x) from [–π,π]

I need help on this

Answers

If the equation is

- sin²(x) = cos(2x)

rewrite the left side using the Pythagorean identity,

sin²(x) = 1 - cos²(x)

and the right side using the double angle identity for cosine,

cos(2x) = 2 cos²(x) - 1

Then the equation transforms to

- (1 - cos²(x)) = 2 cos²(x) - 1

Solve for cos²(x) :

-1 + cos²(x) = 2 cos²(x) - 1

cos²(x) = 0

Take the square root of both sides to get

cos(x) = 0

Solve for x :

x = cos⁻¹(0) + 2   or   x = cos⁻¹(0) - π + 2

x = π/2 + 2   or   x = -π/2 + 2

where n is any integer. We get solutions in the interval [-π, π] when n = 0, giving the solutions

x = π/2   or   x = -π/2

time. weight
8. 0.04
9. 0.07
10. 0.14
11. 0.25
12. 0.49

what is the average rate of change in weight of the plankton from week 8 to week 12?

A) 0.0265
B)0.0375
C)0.055
D)0.1125​

Answers

Answer:D

Because 0.49/12 -0.04/8 = 0.1125

Help plz I need to have this quick

Answers

Answer:

A and D are 87 degrees

C is 28 degrees

and B is 65 degrees

Step-by-step explanation:

28 degrees and c are congruent

a and d are congruent

65 degrees and b are cungruent

B(65)+28+D= 180

65+28= 93

93+D=180

D=87

A=D(87)

Identify the independent and dependent variable of the following graph. Indicate whether the graph rises, falls, or is constant.
A person's core body temperature (°F) in relation to time of day

a. Independent Variable: time of day, Dependent Variable: temperature Graph falls until morning and then steadily rises throughout the day.


b. Independent Variable: time of day, Dependent Variable: temperature Graph is constant and then rises.

c. Independent Variable: time of day, Dependent Variable: time of day Graph is constant and
then rises.

d. Independent Variable: temperature, Dependent Variable: time of day
Graph falls until morning
and then steadily rises throughout the day.​

Answers

Answer:

d number is the correct answer of the question

For the right triangle shown, which equation is correct?
1. all answers are correct
2. cos(53) = x/16
3. cos(53) = sin(37)
4. sin(37) = 16/x

Answers

Answer:

3.37

Step-by-step explanation:

x+37+16+90=180

x+143=180

×=180-143

x = 37

What is 42 divided by 380

Answers

Answer:

0.1105263157894737

Other:

Brainliest? Thanks!

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