need help w algebra pls asap. i’ll mark brainlist!!

Need Help W Algebra Pls Asap. Ill Mark Brainlist!!

Answers

Answer 1

Answer:

The mistake is that they left the i^2 as it is instead of making it -1 because i is the square root of -1. You fix this by replacing i^2 by -1 and you will get (4-7i)/5

Step-by-step explanation:


Related Questions

-6-(4p-2)<-5p-10+4

Solve for P

Answers

p = -2

I did the work :)

P less than -2
(-∞, -2)

Help please??????????

Answers

yx^12

Step-by-step explanation:

technically it's yx with an exponent that's 12

Need help ASAP
!

ありがとう

Answers

1: 0
2: 3
3: -7
4: -7
5: 5^-3 or cubed root of 5
6: 2
7: 2
8: 37
9: 48
10: -3
11: x-6
12: 2x/3
13: 11x
14: 3/x
17: x+ (x+3)
18: x+(3x)
19: (x+1)/(x-1)
20: x-|x|
the two i skipped were worded weirdly sorry

There are 25 girls and 15 boys playing soccer this season.
a. What is the ratio of girls to boys?

Answers

Answer:

5:3

Step-by-step explanation:

hope this help brainliest pls

What is 642 divided by 1083?

Answers

Answer:

.592 the full thing is .592797783934

Step-by-step explanation:

calculator

Brainliest to correct answer.

Answers

Answer:

The Triangles are proportional

Step-by-step explanation:

This is because the difference in each triangle is that each one is adding one inch to each side

pls put me as brainiest

Equivalent ratios
Select two ratios that are equivalent to 3 : 12.
Choose 2 answers:​

Answers

Answer:

1:4 and 6:24

Step-by-step explanation:

Answer:

1:4 and 16:18 or 3:1

Step-by-step explanation:

1:4 because 1 x 3=3 and 3 x 4=12,

3 x 1=3 and 1 x 12=12,

4 x 4=16

6 x 3= 18

Three pears and four apples cost 1.60. four pears and five apples cost 2.05. find the cost of each pear and each Apple.

Answers

Answer:

use 2 variable for the problem. say pear=x apple=y.

3x+4y=1.6

Step-by-step explanation:

When Kyra solved an equation, she ended up with x = 0. She stated that there was no solution. Is Kyra correct?

Answers

Answer:

x=0 does not mean no solution

Step-by-step explanation:

so kyra is incorrect

in a different plan for area​ codes, the first digit could be any number from 4 through​ 8, the second digit was either 4 5 6 or 7, and the third digit could be any number except 2 or 7 with this​ plan, how many different area codes are​ possible?

Answers

There are 160 possibilities for area codes

We are required to find all the combinations for different area codes

It is given to us that the conditions for the tree digit area code are:

first digit could be any number from 4 through​ 8,

the second digit was either 4 5 6 or 7, and the third digit could be any number except 2 or 7

Using the conditions above, the digits which can be first digit of code = 4 through 8 =4,5,6,7,8

the digits which can be second digit of code= 4,5,6,7

the digits which can be third digit of code = 0,1,3,4,5,6,8,9

number of possibilities for first digit= 5

number of possibilities for second digit=4

number of possibilities for third digit= 8

Therefore, total number of possibilities of code   = number of possibilities of first digit x number of possibilities of second digit x number of possibilities of third digit = 5 x 4 x 8=160

Therefore, there are 160 possibilities for area codes

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What’s point B’
What’s point C’
After being dilated by a scale factor 1.5?

Answers

Given:

The given figure is dilated by a scale factor 1.5.

To find:

The coordinates of B' and C'.

Solution:

If a figure is dilated by a scale factor k at point (a,b), so the rule of transformation is

[tex](x,y)\to (k(x-a)+a,k(x-b)+b)[/tex]

From the given figure it is clear that A(3,-3), B(-2,2) and C(-3,-5).

The figure is dilated by a scale factor 1.5 at point A(3,-3), so the rule of transformation is

[tex](x,y)\to (1.5(x-3)+3,1.5(x-(-3))+(-3))[/tex]

[tex](x,y)\to (1.5(x-3)+3,1.5(x+3)+(-3))[/tex]

[tex](x,y)\to (1.5(x)-4.5+3,1.5(x)+4.5-3)[/tex]

[tex](x,y)\to (1.5x-1.5,1.5x+1.5)[/tex]

Using this rule, we get

[tex]B(-2,2)\to B'(1.5(-2)-1.5,1.5(2)+1.5)[/tex]

[tex]B(-2,2)\to B'(-3-1.5,3+1.5)[/tex]

[tex]B(-2,2)\to B'(-4.5,4.5)[/tex]

And

[tex]C(-3,-5)\to C'(1.5(-3)-1.5,1.5(-5)+1.5)[/tex]

[tex]C(-2,2)\to C'(-4.5-1.5,-7.5+1.5)[/tex]

[tex]C(-2,2)\to C'(-6,-6)[/tex]

Therefore, the coordinates of B' and C' are B(-4.5,4.5) and C'(-6,-6).

Armando used algebra tiles to represent the product
3x(2x - 1).

Answers

6x to the power of 2 - 3x let me know if I’m wrong

Jack cut two fabric circles of different sizes in his art class. The larger circle has a circumference of 22 inches, and the smaller circle has a circumference of 14 inches. What is the total area, to the nearest square inch, of the two circles? Use π≈3.14.

Answers

First, lets call the larger circle "A" and the smaller circle "B".

PLEASE HURRY I WILL MARK BRAINLIEST
A triangle with an area of 646 m2 has a height of 68 m. What is the length of the base of the triangle?
Base = __________

Answers

Answer:

9.5m

Step-by-step explanation:

646÷ 68 = 9.5 m

area ÷ height = base of triangle

Plz help due tomorrow

Answers

Answer:

20 percent or 0.7 .

Step-by-step explanation:

Ms. D's 4th period geometry class has both freshman and sophomores. There are 27 kids in the class and it has twice as many freshman as sophomores. How many freshman are in the class?

let x=
let y=

Answers

13.5 freshman well rounded off to 14 freshman

Joel cut the longest piece of fencing in order to make a right triangle. Find the perimeter of Joel's fence.

Answers

He needs 20 minutes to install all of the fence.

Since we have given that

Dimensions of triangle he has to use for fencing are

15 feet, 8 feet, and 20 feet.

1) For making it a right triangle it must satisfy the "Pythagorus theorem" which states that

H²= B²+P²

⇒ 20²= 15²+8²

⇒ 400 ≠ 225+64

⇒ 400≠ 289

No, it will not be able to make a right triangle.

2) Joel cut the longest piece of wood in order to make a right triangle.

So, from above we get that

√289= 17 FEET

So, Longest side must be 17 feet.

It is takes him 30 seconds to install each foot of fencing,

Total perimeter of fencing will be

17+15+8=40 feet

So, for 1 foot he needs = 30 seconds

For 40 feet , he will need

40×30=1200 seconds

1200/60

= 20 MINUTES

Hence, he needs 20 minutes to install all of the fence.

To learn more about perimeter

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Mr. Grouper has budgeted $2000 for a graduation party for his son. The cost to rent the venue is $150 and each guests receives a $3.50 gift. How many people can Mr. Grouper invite to his sons graduation party?

Answers

Answer:

Mr. Grouper can invite 528 people to his sons graduation party.

Step-by-step explanation:

x= number of people

3.50x +150 =2000

-150

3.50x = 1850

1850/ 3.50

528.571428571  = 528

Mr. Grouper can invite around a total of 528 people to attend for the graduation party of his son.

What is Equation?

Equation is a statement including expressions on two sides related by an '=' sign. This may or may not include two or more variables and can be solved using various methods.

Total budget for the graduation party = $2000

Cost to rent the venue = $150

Cost of gift for each guest = $3.50

Let n be the number of guests invited for the party.

Then 3.50n will be the total cost for the guests.

Then we have the linear equation,

150 + 3.50 n = 2000

Solving this will get the number of guests, n.

3.50n = 2000 - 150

3.50n = 1850

n = 1850 / 3.50

n = 528.57 ≈ 528

Hence Mr. Grouper can invite almost 528 people to his son's graduation party.

To learn more about Equations, click:

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whats the answer please help

Answers

Answer:

C

Step-by-step explanation:

This table gives the minutes players spent practicing basketball free throws and the number of baskets they made when they were timed the next day at practice.

Practice time (min) 45 100 57 8 90 63 25 84 30 120 19 18
Baskets made 15 21 18 5 22 18 19 23 16 20 7 10

What is the correlation coefficient of the data?


0.12

0.64

0.80

0.92

Answers

Answer:0.80

Step-by-step explanation: calculator

how to write y-2=-1/3 (x+6) in standard form and why PLZ HELP

Answers

[tex]y-2=-\frac{1}{3}(x+6)\\y=-\frac{1}{3}(x+6)+2[/tex]

Simply move -2 to another side.

[tex]y=-\frac{x}{3}-2+2[/tex]

Distribute -1/3 in (x+6)

[tex]y=-\frac{x}{3}[/tex]        ---> Answer

Answer:

x + 3y = 0

Step-by-step explanation:

The equation of a line in standard form is

Ax + By = C ( A is a positive integer and B, C are integers )

Given

y - 2 = - [tex]\frac{1}{3}[/tex] (x + 6) ← distribute

y - 2 = - [tex]\frac{1}{3}[/tex] x - 2 ( add 2 to both sides )

y  = - [tex]\frac{1}{3}[/tex] x ( multiply through by 3 to clear the fraction )

3y  = -  x ( add x  to both sides )

x + 3y = 0 ← in standard form

i’ll mark brainliest please help and explain!!

Answers

Answer:

c

Step-by-step explanation:

I just guessed, it makes sense

Vince borrows $900 to buy a couch. He will pay off the loan by paying 1.5% simple interest for 2 years. Vince incorrectly calculates the amount he will pay back using the expression below. What is the correct amount Vince will pay back altogether?

Answers

Answer:

the correct amount that Vince have to pay back altogether is $927

Step-by-step explanation:

The computation of the correct amount that Vince have to pay back altogether is as follows:

As we know that

Amount = Principal + Principal × rate of interest × time

= $900 + $900 × 0.015 × 2

= $900 + $27

= $927

Hence, the correct amount that Vince have to pay back altogether is $927

We simply applied the above formula so that the correct value could come

And, the same is to be considered

Find the average rate of change of the function f(x)=(3/-3x-5), on the interval x ∈ [0,3]

Answers

Answer:

9/70

Step-by-step explanation:

Mathematically;

Average rate of change on an interval [a,b] is;

f(b) - f(a)/b-a

f(0) = -3/5

f(3) = -3/14

a = 0

b = 3

Making the substitution, we have

-3/14-(-3/5)/3-0

= 3/5-3/14/3

= (42-15)/70/3

= 27/70/3

= 27/70 * 1/3 = 9/70

How much interest will $1,200 earn over 10 years with 5% interest compounded annually?

A. $600
B. $679.88
C. $754.67
D. $1954.67

Answers

Answer:

$600

Step-by-step explanation:

1,200 · 0.05 = 60

60 · 10 = 600

144-inch board is cut into two pieces. One piece is two times the length of the other. Find the length of the shorter piec
he shorter piece is
inches long

Answers

Answer:

48 inches

Step-by-step explanation:

144/3 is 48, the other two 3rds are the other piece

if 7 loads of stone weight 2/3 tons what is the weight of 1 load of stone in tons

Answers

10.29 answer answer answer answer answer

Write the equation in slope intercept form y - 4=10(x-5)

Answers

Answer:

y = 10x - 46

Step-by-step explanation:

slope intercept form: y = mx + b

m is slope and b is y-intercept

given: y - 4 = 10(x-5)

1. distibute 10

y - 4 = 10x - 50

2. we need to get y by itself so bring -4 to other side

y = 10x - 50 + 4

y = 10x - 46

slope-intercept form is [tex]y=mx+b[/tex]

[tex]y=10(x-5)+4[/tex]          ↣ We move -4 to another side and become positive number.

[tex]y=(10x-50)+4[/tex]             ↣ Distribute 10 inside the brackets.

[tex]y=10x-50+4\\y=10x-46[/tex]            ↣ Then we get the slope-intercept form.

Thus, the answer is [tex]y=10x-46[/tex]

100 points and brainliest if you get these right

Answers

1. a

2. 8

3. b

4. -2

5. c

6. d , not sure if this is right couldn’t see it properly

7. a

8. a

9. d

10. d

Answer: 1. a

2. 8

3. b

4. -2

5. c

6. d

7. a

8. a

9. d

10. d

Step-by-step explanation:

Evaluate each expression
|30-5|-|-7|

Answers

Answer:

18

Step-by-step explanation:

|30 - 5| - |-7| = 18

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