mathematics sat question

Mathematics Sat Question

Answers

Answer 1

Answer:

A

Step-by-step explanation:

You should simplify this, here [tex]i[/tex] is like a variable.

[tex](7+3i)+(-8+9i)[/tex] [tex]7+3i-8+9i[/tex]

Now here you just simplify the variables and calculate the numbers.

[tex]7-8 = -1[/tex]

[tex]3i+9i=12i[/tex]

equals

[tex]-1+12i[/tex] which is "A"

I hope it helps you. Please choose my answer as the BRAINLIEST

Answer 2
(7+3i)+(-8+9i)
=7+3i-8+9i
=-1+12i

Hope my answer helped u :)

Related Questions

ILL GIVE BRAINIEST ( or whatever that is)
why can't 3/4 be .34?

Answers

Answer:

3/4 would be .75

Step-by-step explanation:

1/4 would be .25 because .25x4=1. Because the denominator is a 4 you are trying to find a number that when multiplied 4 times would equal 1 or 4/4.

Answer:

3/4 cannot be .34 because that is not what it is equal to when converted to hundredths.

Step-by-step explanation:

The decimal 0.34 is in the value hundredths. 3/4's value when converted to hundredths is 75/100 or 0.75. We get this by multiplying 3 and 4 by the same factor that brings 4 to 100, which is 25.

So, 4*25=100(denominator), and 3*25=75(numerator). The decimal value is 0.75. Therefore, 3/4 cannot be 0.34 because the values are not the same.

Help me please show me step by step how to do this it is due soon

Answers

x = 14y = 5

Step-by-step explanation:

Value of x

9x - 2 = 5x + 54

9x - 5x = 54 + 2

4x = 56

x = 14

value of y

(9x - 2) + (10y + 6) = 180

(9 · 14 - 2) + 10y + 6 = 180

126 - 2 + 10y + 6 = 180

130 + 10y = 180

10y = 180 - 130

10y = 50

y = 5

If a quantity changes by a factor of 0.125 every year, by what factor does it change every 4 months?

Answers

Step-by-step explanation:

0.125 ÷12 = 1/96

1/96 x 4 =1/24

or

0.125÷3=1/24 because 4x3=12

PLS HELPPPO
Solve for c.
a – b + c = 3
oc= 3- a + b
o c = 3 – a+ b
oc=9– a + b
oc=9-Va+VO

Answers

Answer:

c = 9 - a + b

Step-by-step explanation:

root square(a - b + c) = 3

a - b + c = 3^2

a - b + c = 9

solving for c

c= 9 - a + b

What is the value of x?

Answers

Answer:

D

Step-by-step explanation:

because the angles are across from each other, they are equivalent

you would set up the equation like this

8x - 8 = 7x + 8

then you could add 8 to each side

8x = 7x + 16

then subtract 7x from each side

x = 16

WILL GIVE BRAINLIEST
Find the measure of 26 given angle 2 is 70 degrees.​

Answers

Answer:

70

Step-by-step explanation:

Z2=Z6‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌

‌ ‌ ‌ ‌

Will be 70 [Corresponding Angles]

Open with
What is the value of 3-1 +3-2?

Answers

Answer:

3

Step-by-step explanation:

the answer to this probableis 3

if e^f(x)=1+x^2, then f(x)=

Answers

Step-by-step explanation:

point dene ke liye sukriya tumhara dost

Answer:

[tex]\displaystyle f(x) = \ln\left( 1 + x^2\right)[/tex]

Step-by-step explanation:

We are given that:

[tex]\displaystyle e^{f(x)} = 1 + x^2[/tex]

And we want to find f(x).

We can take the natural log of both sides:

[tex]\displaystyle \ln\left(e^{f(x)}\right) = \ln\left( 1 + x^2\right)[/tex]

Recall that ln(aᵇ) = bln(a). Hence:

[tex]\displaystyle f(x) \ln(e) = \ln\left ( 1 + x^2\right)[/tex]

By definition ln(e) = 1. Therefore:

[tex]\displaystyle f(x) = \ln\left( 1 + x^2\right)[/tex]

helppppppppppppppppppppppmeeeeeeeeeeeeeeeeeeeeeee

Answers

Answer:

Todd is wrong.

Step-by-step explanation:

Basically, the ratio of boys to girls is 3:5 12: x. Let's represent the number of girls with x. If we cross multiply, 5×12÷3=20. Therefore there are 20 girls and 32 students in total.

Please mark BRAINLIEST.

Graph the equations below:
Y+4=-3(x+2) how would you solve it

Answers

Answer: An equation: d = 40r. 3. A tabulation of values. 4. A graph showing the relationship between time and distance. We have already used word sentences and equations to describe such relationships; in this chapter, we will deal with tabular and graphical representations.

Step-by-step explanation:

Hope this helps!

Mrs. Lee's gross biweekly salary is $1230. What is her gross monthly salary?

Answers

Answer:

$4920

Step-by-step explanation:

one month=4 weeks

1230×4

4920

Answer:

$2460

Step-by-step explanation:

A biweekly salary is basically just saying every 2 weeks so because a month is about 4 weeks you would just double the biweekly salary so:

$1230 × 2 = $2460

Katie ran 400 m at a speed of 6 m/s at the track meet. How long in seconds) did it take
Katie to run?

Answers

Answer:

It takes Katie 66 2/3 seconds to run 400m. Min conversion: 1 min and 6 2/3 secs

Step-by-step explanation:

I don't understand how to do this problem. Could someone help?

Answers

Answer:

c=2a-1 b=8a-4 a=a

add them all together and get the answer

Step-by-step explanation:

5/6=7n+9/9 (solve for n)

Answers

N = - 1/42
I hope this answers your questions ! :)

(Write an equation that represents the angle relationships in the diagram below. Do not use any spaces or degree symbols when you type your equation.)

Whats the equation?

Answers

3x+132=180 is your equation

Answer:

180-3x= 132

Step-by-step explanation:

-3x=132-180

-3x=-48

-3x/3=-48/3

x=16

So each angle is 16°

the prime factorization of 54

Answers

Answer:

The prime factorization of 54 = 2 × 3 × 3 × 3 = 2 × 3.

Step-by-step explanation:

Factor 54 into two numbers, then factor each of those factors as much as possible until you can't factor a number.

54

=  = ( 9 ) ⋅ ( 6 )  

= ( 3 ⋅ 3 ) ⋅ ( 2 ⋅ 3 )

This is the prime factorization of 54.

(Hope this helps can I pls have brainlist (crown)☺️)

-1/3x-1+x2 in standard form

Answers

Answer to -1/3x-1+x2 in standard form:

x²-1/3x-1

Help please I don’t understand this

Answers

Answer:

Step-by-step explanation:

y = x + 3

so when x = 0 then y= 0 + 3 which means, when x = 0 then y=3

so

x    y

0    3  y=0+3

1     4   y=1+3

2    5   y=2+3

3    6    y=3+3

4    7     y=4+3

5    8    y=5+3

Answer:

See pic below.

Step-by-step explanation:

Create a table of values by letting x equal some numbers such as 0, 1, 5, 7. You can use others, too.

You started filling out the table correctly.

Find the corresponding y-coordinates and write them in the table.

Then plot each point on the graph using a dot.

Then connect the dots with a line.

See the picture below.

124 / 74152
What is the answer

Answers

The correct answer is 598

Answer:

598 something like that

Step-by-step explanation:

guys pls help me!!!!!!

Answers

Answer:

[tex]x + 56 = 180 (corresondig \: angle)\\ x = 180 - 56 \\ x = 134[/tex]

hope this will help you

Find the domain and range of y= f() whose graph is given below.
(Click on graph to enlarge)

Answers

Answer:

-8 <_ x < -3

-7 <_ y < -2

Step-by-step explanation:

closed dot means it includes that number so in this case x is least than or equal to -8 and open dot means it doesn't include that value so x is less than -3 and does NOT include -3

and for the y value it's pretty self explanatory if u just count it (i might be off by a little cuz the photo quality is kinda fuzzy but i hope u get the gist!)

Determine whether the statement is true or false. If it is​ false, rewrite it as a true statement. The 50th percentile is equivalent to Q1. Choose the correct answer below. A. The statement is false. The 50th percentile is equivalent to Q2. B. The statement is true. C. The statement is false. The 50th percentile is equivalent to the mean. D. The statement is false. The 50th percentile is equivalent t

Answers

C. ( the statement is false)

Help me please I’ll reward you with brainly

Answers

Answer:

You are correct! It is the answer you have selected in the picture!

Step-by-step explanation:

Hope this helps :)

4x4=16

-4x-4=16 too

Answer:

a

Step-by-step explanation:

square root both sides and youll get x=4

can i get a brainliest

which graph represents an exponential function

Answers

y=ab with a x overtop

what is the number can subtract 49 in whole number

Answers

Step-by-step explanation:

dude it doesn't exist 49 is an odd number

How many pounds of bananas cost $3.75?

Answers

Answer:

5

Step-by-step explanation:

Each one goes up by .75 cents

you go up by .75 each time per pound so the answer is 5

Which function would be a vertical stretch to the function f(x) = 5x - 12?

A. f(x) = 8x - 12
B. f(x) = 3x - 12
C. f(x) = 5x - 16
D. f(x) = 5x + 10​

Answers

Answer:

d

Step-by-step explanation:

trust me its correct

the product of a number v and 15

Answers

product means the multiplication of

so 15 x v or 15v

this is my second problem​

Answers

y is equal to (0,-5) and there is no slope so it's a straight line.

A car's odometer starts at 25 miles and for every 25 miles traveled, 1 gallon of gas is used.
Based on this information, which graph best shows this relationship between the miles traveled, y, and the gallons of gasoline used, x?

Answers

Top left graph. Shows every gallon of gas gets 25 miles.

The obtained coordinate points to plot the graph are matching with graph C. Therefore, option C is the correct answer.

Given that, a car's odometer starts at 25 miles and for every 25 miles traveled, 1 gallon of gas is used.

What is graph?

In mathematics, and more specifically in graph theory, a graph is a structure amounting to a set of objects in which some pairs of the objects are in some sense "related".

Let the number of miles traveled be y, and the gallons of gasoline used be x.

Now, the equation for the given situation is y=25x

By substituting x = 1, 2, 3, 4, 5,....we get

y = 25(1) =25

y = 25(2) =50

y = 25 (3) =75

y = 25 (4) =100

So, the coordinates to plot the graph are (1, 25), (2, 50), (3, 75) and (4, 100) and so on.

The obtained coordinate points to plot the graph are matching with graph C. Therefore, option C is the correct answer.

To learn more about the linear graph visit:

https://brainly.com/question/28494690.

#SPJ5

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