Mathematics High School

-2x - 8y = 16
Y = -4

Answers

Answer 1

Answer:

_24

step by step explanation

-2x-8×4=16

-2x-32=16

the -32 will go the other way and it will become positive

-2x=32+16

-2x=48

-2×/2=48/2

=-24

Answer 2

Answer:

8

Step-by-step explanation:

-2x-8y=16                   -2(8)-8(-4)=16

-2x-8(-4)=16                 -16+32=16

-2x+32=16                       16=16

-2x=-16

x=8

Have a great day and I hope this is correct

Related Questions

Which statements describe a characteristic of a right pentagonal pyramid? Select two options.
The bases are parallel and congruent.
The segment from the top to the center of the base is perpendicular to the base.
All the faces are congruent pentagons.
The base is a pentagon and the sides are triangles.
The base must be a regular polygon.

Answers

Answer:

B and D are correct

Step-by-step explanation:

The options:

A. The bases are parallel and congruent.

Incorrect. There are no parallel bases in any pyramid

B. The segment from the top to the center of the base is perpendicular to the base.

Correct as its a right pyramid

C. All the faces are congruent pentagons.

Incorrect. Only the base is pentagon.

D. The base is a pentagon and the sides are triangles.

Correct

E. The base must be a regular polygon.

Incorrect. It is pentagon.

Answer:

2 and 4

Step-by-step explanation:

edge 2021

please help!
Find the slope of a line that passes through the
following ordered pairs. Reduce to lowest
terms.
(7, 1) (0, -3)

Answers

correct answer is that i need help with this too.

solve the literal equation 2y + 5x = 3x +8 for x
help please I'm on a timed test​

Answers

Step-by-step explanation:

Simplifying

5x = 3x + 8

Reorder the terms:

5x = 8 + 3x

Solving

5x = 8 + 3x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-3x' to each side of the equation.

5x + -3x = 8 + 3x + -3x

Combine like terms: 5x + -3x = 2x

2x = 8 + 3x + -3x

Combine like terms: 3x + -3x = 0

2x = 8 + 0

2x = 8

Divide each side by '2'.

x = 4

Simplifying

x = 4

Answer:

x = -y + 4

Step-by-step explanation:

2y + 5x = 3x + 8

2x + 2y = 8

2x = −2y + 8

x= −y + 4


Calcium-41 is being used in studies testing the effectiveness of drugs for preventing osteoporosis. The half-life of calcium-41 is 100,000 years. If 20 grams of calcium-41 are present initially, how long would it take until only 2 grams
remains?​

Answers

Answer:

332,193 years

Step-by-step explanation:

From the question above, we are to calculate the time in an half life question, hence, the formula is given as

t = In(Nt/No) ÷ -(In2/t½)

Where

t = time is takes for an substance to decay or reduce

Nt = Amount of sample after time = 2g

No = Initial amount of sample = 20g

t½ = Half life = 100,000 years

Hence,

t = In(2/20) ÷ (In 2/ 100,000)

t = 332192.80948874 years

Approximately = 332,193 years

Carla can roll 18 pretzels in 12 minutes. How many can she roll in 40 minutes?

Answers

Answer: 60

Step-by-step explanation:

To find how much she rolls in 1 minute, you divide 18 by 12. This gets you 1.5. Multiply 1.5 by 40 and you get 60.

Find the product (у- 2)(5у2 + 3y - 1)

Answers

Answer:

5y^3 - 7y^2 - 97y + 2   <<<< Answer

Step-by-step explanation:

(у- 2)(5у2 + 3y - 1)

Multiply the three terms by y

5y^2 * y + 3y * y - 1*y = 5y^3 + 3y^2 - y

Multiply the three terms by - 2

-2*5y^2 -2*3y - 2*-1

-10y^2 - 6y + 2

Now combine the like terms

5y^3 + 3y^2 - 10y^2 - y - 6y + 2

5y^3 - 7y^2 - 97y + 2

please help asap , explain how you got the answer .

Answers

Answer:

f(x)= -2/5x-4

Step-by-step explanation:

-2/5 is the slope and -4 is the y intercept

i need help for this pls

14+(−9)+(−9)

Answers

Answer:

the answer is -4. :)

Step-by-step explanation:

-4 this is the answer

Answer the two following question and will mark Brainliest

Answers

Answer:

Max: (-2,5)

Min: (-6,-4)

Answer:

(-2, 5) for the max and (-6, -4) is the min. That if the question is talking about max and min graph points!

Step-by-step explanation:

Hope it helps!

Lilian makes $10.50 per hour and earned $252 last week. The equation 252 = 10.50h can be used to determine how many hours Lilian worked. How many hours did lilian work last week ? answer please !

Answers

Lilian worked 24 hours last week

She worked 24 hours 252/10.50 = 24

HELPP! I need an explanation an answer quicck

Answers

Answer:

C. -1,-2

Step-by-step explanation:

the answer is -1 , -2

Armoni took a quiz. On her quiz, she got a 95%. If there were 20 questions on the quiz, how many did Armoni get correct?

Answers

Answer:

19 questions right

Step-by-step explanation:

95% > .95

.95 * 20 = 19

Armoni got 19 questions correct

hope it helps!

sinπ÷14×sinπ÷14×sinπ÷14​

Answers

Answer:

Step-by-step explanation:

??? do you need help or is this free points?

please help i’ll give brainliest please tysm :))

Answers

Answer:

Grape juice has 180 containers.

Step-by-step explanation:

Given that the ratio of containers of orange juice to containers of grape juice in a store is 5 orange juices to 4 grape juices.

i.e.

Orange Juice containers : Grape Juice containers = 5 : 4

Total containers = 405

It means if we divide 405 by 9, we get the 9 equal parts of 45.

i.e. 405 / 9 = 45

as

Orange Juice containers : Grape Juice containers = 5 : 4

It means the share of Grape Juice containers is 4 parts out of 9 parts.

Thus, multiply 45 by 4 to determine the number of containers grape juice have:

45 × 4 =  180 containers

Therefore, grape juice has 180 containers.

add 2f+5g+7h and 3f+6g+8h

Answers

5f+11g+15h



Explanation:

2f+5g+7h+3f+6g+8h

You just combine the like terms
5f+11g+15h

Answer:

Step-by-step explanation:

Add the like terms

5f+11g+15h

4. slope: -y-intercept
: -2

Answers

Answer:

y = 4/1 - 2

Step-by-step explanation:

That is your words in slope intercept form

y=4/1-2 is the answer hope ur helps

PLEASE HELP ASAP Which of the following expressions is equivalent to the expression 42 + 90?

Answers

Answer:

6(7+15)

Step-by-step explanation:

6×7=42

6×15=90

I WILL GIVE BRAILYEST!!!!!
What are the solutions to y=5x2−35x+30?
What are the solutions to y=2x2+16x+30?
What are the solutions to y=6x2−48x+42?

Answers

Answer:

0,6

9,8

0,9

Step-by-step explanation:

answer quickly !!! Pls

Answers

Answer:

(6 × 5) + (6 × 3) = 6 × (5 + 3)

Step-by-step explanation:

Since both 5 and 3 are being multiplied by 6, the total would be 6 multiplied by the sum of 5 and 3.

A bag contains 12 red marbles the ratio of red marbles to blue marbles is 4:3 find the number of blue marbles in the bag

Answers

Answer:

9

Step-by-step explanation:

this can be written as an equation.

12/x=4/3

and it is just easy now, you see what you multiply 4 by to get 12 and it is 3, so that means you have to multiply 3 by 3

3 times 3 is 9, so the answer is 9

Answer:

Hello There!!

Step-by-step explanation:

First look at the ratios the red marbles ratio is 4 and the blue marbles ratio is 3.

You already know that there are 12 ratios in the bag so 12÷4=3(1 ratio equals 3 marbles)

Therefore,3×3=9.So the answer is 9 blue marbles.

hope this helps,have a great day!!

~Pinky~

true or false:

Question attached:

Answers

Answer:

true

Step-by-step explanation:

Help Plz 10pts will be given

Answers

Answer:

Is the first one 3 over 7

Step-by-step explanation:

Jordan has traveled 255 miles out of 340 miles on a trip. What percent of the total distance has he traveled?
A. 73%
B. 82%
C.75%
D. 70%

Answers

Answer:

75%

Step-by-step explanation:

Just do long division and get c.75%

Pls mark brainliest

Answer:

75%

Step-by-step explanation:

I swear it is right.

Write the ratio as a fraction in simplest form, with whole numbers in the numerator and denominator.
16 gal : 24 gal

Answers

2:3 . you divide the numbers by the greatest factor. which is 8. 24 divided by 8 is 3, 16 divided by 8 is 2. =2:3

Select all diagrams that show 4 x 1/3

Answers

Answer:

b

d

Step-by-step explanation:

Does anyone know this because clearly i dont

Answers

I think it’s either A or C
It’s actually D cause the line needs to be open and clearly if you try to plug in (0,0) it is a solution which means the right side needs to be covered

How can you get $120 using 10 bills?

Answers

Answer:

Twelve 10 dollar bills

Step-by-step explanation:

10, the value of a 10$ bill, times twelve equals 120$

Rewrite the equation C = 2nr to show the expression that can be used to find the value of r.

Answers

The process is:

C = 2nr

2nr = c

r (2n) = c

[tex]r = \frac{c}{2n} [/tex]

That's the answer☝️☝️☝️☝️

or maybe this one

r = 2n + c

sorry, I'm unsure, it has been too long since I studied that...

Answer:

C = 2nr

you divide by 2n both sides

that means C/2n = 2nr/2n

after that you simplify then it will be C/2n = r

r = C/2n

The table below shows the amount of flour needed for each recipe. Sort the list below from
greatest to least amount of flour needed per serving.
Cups of Flour
Serving Size
Recipe A
1
Recipe B
Recipe C
를
Recipe D
1 2 3 를
Recipe A, Recipe B, Recipe C, Recipe D

Answers

Answer:

d,c,b,a

Step-by-step explanation:

Need help asap thanks

Answers

Answer:

1. SAS 2. SSS 3. ASA 4. AAS

Step-by-step explanation:

1. They provide you with an equal side, an equal angle, and one shared side which is equal.

2. They provide you with an equal side, another equal side, and one shared side that is equal.

3. They provide you with an equal angle, an equal side, and another equal angle.

4. They provide you with an equal angle, another equal angle, and one shared side that is equal.

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