Mathematics High School

Which of the following equations is equivalent to 30 + 10(x - 20) = 5? А 40x - 20 = 5 B 40x - 800 = 5 10x – 10 = 5 D 10x – 170 = 5 ©2021 Illuminate Education, Inc.​

Answers

Answer 1

Answer:

B

Step-by-step explanation:

30 + 10 (x - 20) = 5

you cant add the numbers in the parenthesis so you add the first two numbers and distribute.

40 (x - 20) = 5

40x - 800 = 5

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PLS HELP WILL MARK BRAINIEST

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The slope is y = -x + 2

Answer my last question

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there is no question to answer lol sorry

HELP ME PLEASE!!!!!!!

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Given:

The graph of a line.

To find:

The equation of line and values of m and b. Check whether it is proportional or linear.

Solution:

From the given graph it is clear that, the line passes through (0,4) and (2,0). So, the equation of line is

[tex]y-y_1=\dfrac{y_2-y_1}{x_2-x_1}(x-x_1)[/tex]

[tex]y-4=\dfrac{0-4}{2-0}(x-0)[/tex]

[tex]y-4=\dfrac{-4}{2}(x)[/tex]

[tex]y-4=-2x[/tex]

Adding 4 on both sides, we get

[tex]y=-2x+4[/tex]

On comparing this equation with slope intercept form, i.e., [tex]y=mx+b[/tex], we get

[tex]m=-2\text{ and }b=4[/tex]

All lines are linear. If a line passes through the origin then it is proportional.

From the given graph it is clear that the line is not passing through the origin, i.e., (0,0). So, it is linear not proportional.

Therefore, the value of m is -2 and the value of b is 4. The equation of line is [tex]y=-2x+4[/tex].  The line linear not proportional because it does not passing through the origin.

Drag each figure to show if it is similar to the figure shown or why it is not similar.

Answers

Answer:

1st one - not similar diff ratio

2nd- similar

3rd- not similar diff shape

4- not similar diff ratio

5- similar

6- not so sure but i would go w either not similar diff shape or similar

Step-by-step explanation:

Please help, I need some urgently

Answers

Answer:

[tex] \angle DEC [/tex]

Step-by-step explanation:

[tex] \red{\bold {\angle DEC}} [/tex] is supplementary to[tex] \angle DEA [/tex]

how many ducks are left if they started with 8 and 3 ran away?

Answers

Answer:

5?xd

Step-by-step explanation:

Write a polynomial function in Intercept (factored) form that has the following zeroes.
3, -5, 2, -2

Answers

Answer:

f(x)＝(x-3)*(x+5)*(x-2)*(x+2)

if y varies directly with x and y is 12 when x is 9 what is x when y is 4

Answers

Answer:

X is 3 when Y is 4.

So, the required value  [tex]x[/tex] is 3.

Proportional:

Properly related in size, degree, or other measurable characteristics; corresponding: Punishment ought to be proportional to the crime. 3. Mathematics Having the same or a constant ratio.

The first part is  y varies directly with x then,

[tex]y \propto x\\y=kx[/tex]... (1) where k is proportional constant

Now, substituting [tex]y=12, x=9[/tex] in equation (1) we get,

[tex]12=9k\\k=\frac{4}{3}[/tex]

Substituting [tex]k=\frac{4}{3}[/tex] in equation (1) with [tex]y=4[/tex] then,

[tex]4=(\frac{4}{3})x\\ x=3[/tex]

Learn more about the topic Proportional:

https://brainly.com/question/25633806

Evaluate the logarithm. ln(1/e^2)

Answers

Answer:

-2

Step-by-step explanation:

Notice that 1/e^2 = e^(-2), by power rules.

Now ln(e^x)=x.

So ln(1/e^2) = ln(e^(-2))=-2

Alia made a scale drawing of a square park, which has a side length of 30 feet. She used the scale 3 centimeter = 5 feet. What will be the area of the scale drawing?

Answers

Answer:

324cm²

Step-by-step explanation:

Given the scale conversion;

3 centimeter = 5 feet

x = 30 feet

Cross multiply

5x = 3 * 30

5x = 90

x = 90/5

x = 18cm

Hence the side length in cm is 18cm

Area of the square = L²

Area of the square = 18²

Area of the square = 324cm²

Hence the area of the scale drawing is 324cm²

which expression is equivalent to 4 - (-7)​

Answers

Answer:

4 + 7

(also 11)

Step-by-step explanation:

Answer:

7+4 or 11

Step-by-step explanation:

7+4 since 4-(-7) makes a mega plus.

Eric had to put together the metal frame of a bed. On the instructions, the length
of the frame was shown as 4 inches. If a scale factor of 1 inch = 1.6 feet was used
on the instructions, what was the actual length of the metal bed frame? How do
you know?

Answers

Answer:

The answer is 6.4. And i know because 4x1.6=6.4

Find the length of AC

Answers

B)

here,

A to B = 62

C To B = 11

A to C = ?

now,

so, 62 - 11 = 51

therefore a to C Is 51 cm

plz mark me brainliest ok

plz follow me

A)

Here,

A to B = 13

A to C = 26

total = ?

now,

A to B + A to C

13 + 26 = 39

Therefore,

total number is 39

Vector works the same number of hours every week. He worked a total of 532.5 hours in the last 15 weeks. How many hours did he work in one week?

Answers

Answer

35.5 hours per week

Step-by-step explanation:

532.5/15=35.5

therefore 35 and half a hour per week

Which angles are complementary to each other, will give brainliest

Answers

3 nd 4

Step-by-step explanation:

hope this helps


x-2y=3
4x -8y = 12
Substitution

Answers

Answer:

Solution in photo

Step-by-step explanation:


A diver is 4 meters below sea level. What integer represents the location of the diver?

Answers

Answer:

-4

Step-by-step explanation:

When talking about integers key words like below or anything being  Loss means Negative.And anything relating to an positive like   above or receive means positive which means anything  that your gaining or getting.

-4 is the answer because it is below sea level meaning negatives

2x+3y=12
complete the missing value in the solution to the equation.
(_,8)
*will give 10 points*​

Answers

the answer would be (6,8)

2x+3y=780
What is x?
What is y?

Answers

Answer:

x = 330 and y = 40

Step-by-step explanation:

select all expressions whose value is negative

Answers

Answer:

"2 + 2(-3)(7) = negative

-2(27 ÷ 9)+4= negative

(14 ÷ -2)(-6)= positive

(4 - 10) - ( 8 ÷ ( -2))= negative

Step-by-step explanation:

2 + 2(-3)(7) = -40

-2(27 ÷ 9)+4= -2

(14 ÷ -2)(-6)= 42

(4 - 10) - ( 8 ÷ ( -2))= -2"

geometry triangles ​

Answers

do you have a question?
where are the questions?

PLEASE PLEASE HELP ME!

Answers

Answer:

I don' t understand what you need help with

carney needs $60 to buy her mother a gift. She has saved 25% of that amount so far. Bow much has she saved so far

Answers

Answer:

$15.00

Step-by-step explanation:

25% of anything means a quarter of that thing. (ie.1/4 of $60 which is $15).

OR

(25/100)*$60

0.25*60=$15

X = [ ? ]

BRAINLEST to whoever is right!!

Answers

Answer:

x=125

Step-by-step explanation:

all angles of a triangle add up to 180 degrees.

30+25=55

180-55=125


Sten had 12 apples.
He ate 5 of them.
He picked 3 more apples and gave all of the
apples to Granny.
How many apples did Sten give Granny?

Answers

The answer is 10 hope this helps

Andy drove from his home to his sisters house he stayed at her house and then drove back home. please help ASAP

Answers

Answer:

a) 45 minutes

b) 100 km/hr

Step-by-step explanation:

a) It is the length of the horizontal line in the graph. It extends from 14:45 to 15:30 and that is 45 minutes.

b) Andy travels 50 km in 30 minutes (=0.5 hr), that's 50/0.5 = 100 km/hr.

As per linear equation, Andy stayed his sisters house for 45 minutes.

The average speed on his journey home is 100 km/hour.

What is a linear equation?

"An equation that has the highest degree of 1 is known as a linear equation. This means that no variable in a linear equation has an exponent more than 1. The graph of a linear equation always forms a straight line."

As per the graph, Andy drove from his home to his sisters house.

Then he rested for a while there.

After that, he returned back to his home.

It is clear from the graph that, Andy stayed his sisters house

= (15:30 - 14:45) hours = 45 minutes

Again, from the graph, the distance between Andy and his sister's house is 50 k.m.

Andy return back to his home in

(16:00 - 15:30) hours

= 30 minutes

= 0.5 hours

Therefore, the average speed on his journey home is

[tex]= \frac{50}{0.5} km/hour\\= 100 km/hour[/tex]

Learn more about a linear equation here: https://brainly.com/question/11897796

#SPJ2

Use ruler and compasses to draw a line which is
perpendicular to line AB at point C.

Answers

Answer:

Draw a line that crosses point C so when it crosses AB it forms two 90 degree angles

Step-by-step explanation:

Probability
Help me with this one plzzz

Answers

Answer:

a. 5/10 = 50%

b. likelihood you'll draw a card with a B on it

I'm not sure about c.

Determine the sign of each product and place it in the correct category​

Answers

Answer:

sorry i had too

Step-by-step explanation:

someone passed this to me) 90% of people marry there 7th grade love. since u have read this, u will be told good news tonight. if u don't pass this on nine comments your worst week starts now this isn't fake. apparently if u copy and paste this on ten comments in the next ten minutes you will have the best day of your life tomorrow. you will either get kissed or asked out in the next 53 minutes someone will say i love you

Toben bought ​ 512 ​ pounds of chicken, which cost $3.50 per pound. What was the total cost of the chicken?

Answers

Answer:

$1792

Step-by-step explanation:

512 x 3.50 = $1792

Answer:

$1792

Step-by-step explanation:

512 * $3.50 = $1792

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