3a) Solve using substitution.
y = - 2x
x + 2y = 9

Answers

Answer 1

Answer: Here is the step:

−2x;x+2y=9

x+2y=9

Then substitute -2x for y

-3x/-3 =9/-3

x= -3


Related Questions

Write an equivalent expression.
​-2(8+5g)

Answers

Answer:

-16 - 10g

Step-by-step explanation:

All I did was distribute

-2*8 + -2*5g

-16 - 10g

(+ -) additive inverse

QUESTION 23
Tamara has $50 to spend on craft supplies. She spends $30
plus a 5% tax at the store. How much change should she
receive?

Answers

Answer:

the answer is $18.5

Step-by-step explanation:

30 + tax is $31.50

Answer:

$18.50

Step-by-step explanation:

Before Tax Price: $30

Sales Tax Rate: 5%

After Tax Price: $18.50

How can you find how much the sales tax is? Let's say you're buying a $100 item with a sales tax of 5%. Your math would be simply:

[cost of the item] x [percentage as a decimal] = [sales tax]

Step 1 : $30 x .05 (5%) = $1.50 Step 2 : $30 + $1.50 = $31.50Step 3 : $50 - $31.50 = $18.50  

Identify the sampling designs that use convenience sampling. Check all that apply.
A restaurant surveys all its breakfast customers about meal quality.
An online poll is conducted with high school students about the use of technology in the classroom.
A company that produces natural food flavorings conducts taste tests with all its employees.
A radio show requests listeners call in to vote on the outcome of a local election.
A museum puts an online survey code on each ticket sold to gather information about satisfaction with exhibits.
A veterinarian collects information from his or her clients about dog food brand preferences.

Answers

Answer:

A restaurant surveys all its breakfast customers about meal quality.

A company that produces natural food flavorings conducts taste tests with all its employees.

A veterinarian collects information from his or her clients about dog food brand preferences.

Step-by-step explanation:

Answer:

A C F

Step-by-step explanation:

please help efiwhaiuhfihofheryfheauyshuyqyyha

Answers

Answer:

Y= -7 (again)

Step-by-step explanation:

I guess this same just refer to my previous instructions

Answer:

-7

Step-by-step explanation:

4=8(y+4)-4y

4= 8y+32-4y

4= 4y+32

-28=4y

-7=y

The bike store marks up the wholesale cost of all bikes they sell by 30%. The wholesale price of the bike is $96.00. What would we pay for the retail price?

Answers

The answer would be $124.80. The answer would be 124.80 because 96.00x.30 equals 28.8 You then add that to the 96.00 which equals $124.80. Hope this helps!

Help please thank you !

Answers

Answer:

"the product of n and 4 plus 7" would be the middle box

"the sum of 4 and the product of 7 and n" would be the third box

"the product of 7 and the sum of n and 4" would be the first box

Step-by-step explanation:

In a standard deck of cards, what is the probability of drawing an even numbered card?

Answer (round) to the hundredth place value.

Answers

Answer: .39

Step-by-step explanation:

The average of drawing and even number card is 20/51. Which is .39

An ice cream shop offers a choice of three types of cones and 31 flavors of ice cream a customer gets to choose a cone and a type of ice cream how many events are described

Answers

Answer:

2 events are described.

Step-by-step explanation:

Because only three types of cones and 31 flavours of ice cream.

50 points and brainiest if correct.
(Write the answer as an inequality solved for c)

Answers

$20 5*4=20
multiply it

PLEASE HELP ASAP THIS IS TIMED

Answers

Answer:

AB = 73mm

Step-by-step explanation:

If BC is 61 and AC is 54

61+54= 115mm so 188-115=73mm

The mean of 3.5,5.5,4.6,5.1,4.8,3.9,5.3 show work

Answers

Answer:

4.6714285

Step-by-step explanation:

Mean is calculated by adding all the numbers and dividing the total by how many numbers are there.

So, add all the numbers to recieve one total.

[tex]3.5 + 5.5 + 4.6 + 5.1 + 4.8 + 3.9 + 5.3 = 32.7\\\frac{32.7}{7} = 4.6714285[/tex]

Answer:

4.67143 or 4.67

Step-by-step explanation:

add up all the numbers, then divide by how many numbers there are. In other words it is the sum divided by the count.

3.5+5.5+4.6+5.1+4.8+3.9+5.3= 32.7

divide by the number of numbers

there are 7 number in total

32.7/7= 4.67143

state the slope and the y-intercept for the graph

y= -3/7x - 1/7

Answers

Answer:

Slope: -3/7

Y-intercept: -1/7

Step-by-step explanation:

In the form y = mx+b, m is the slope and b is the y-intercept.

Karen bought a 40-pound bag of dog food at the beginning of the week. Her dogs ate f pounds of dog food during the week. Which expression can be used to find the amount of dog food that is left? 40 + f 40 - f F - 40 40/f

Answers

Answer:

40 - f

Step-by-step explanation:

Total pounds of food bought= 40 pounds

Total pounds of food eaten by the dog = f pounds

Total pounds of dog food left = Total pounds of food bought - Total pounds of food eaten by the dog

= 40 - f

Expression that can be used to find the amount of dog food that is left = 40 - f

The next model of a sports car will cost 5.9% more than the current model. The current model costs $33.000. How much will the price increase in dollars? What will be the price of the next model?

Answers

Answer:

Price increase $1,947

Price of the next model $34,947

Step-by-step explanation:

Since the next model of a sport car will cost 5.9% more than the current model, and the cost of current model is $33,000

The price increase in dollars would be;

= 5.9% × $33,000

= $1,947

The price of the next model would be;

= Cost of current model + Price increase

= $33,000 + $1,947

= $34,947

an 18 foot long ramp is placed at a loading dock that is 5feet above ground. how far is the bottom of the ramp from the dock?

Answers

17.29 feet, using the Pythagorean theorem.

the circumference of a circle is 88cm. Calculate the radius of a circle ​

Answers

The answer is

14.01 cm ;D

A quadrilateral is translated 9 units down and 4 units left,

Answers

Answer: what’s the whole question

Step-by-step explanation:

Numbers that come one after the other are called consecutive numbers.
For example, 2, 3, 4 or 113, 114, 115 are consecutive numbers. Six consecutive numbers starting from 33 are multiplied.
Which of these digits will be in the ONES place in the resulting number?

a. 0
b. 2
c. 5
d. 6

Answers

Answer:

A

Step-by-step explanation:

Here, we want to get the number that will be in the units place

Six consecutive numbers from 33 are;

33 , 34 , 35 , 36 , 37 , 38 ,

Product of 5 and any of the even numbers will yield 0

That means the number on the unit place is 0

Which function is graphed on the coordinate plane below?

A.) f(x) = 2x - 6
B.) f(x) = 2x + 6
C.) f(x) = -2x + 6
D.)f(x) = -2x - 6

Answers

Answer:last answer for 50 points brother wh

Step-by-step explanation: yes ok

Answer:

Option A is the correct answer

Step-by-step explanation:

because you have a y-intercept of -6 and then your slope it's going up 2 and to the right 1 which is 2/1=2

I need help with this problem

Answers

i’m not sure imma look stuff up and get back to you tho

Solve.


−0.65p − 4 = 0.35p


The solution is p =

Answers

Answer:

Step-by-step explanation:

Solution,

p=-4

If you found my answer useful then please mark me brainliest.

Write an inequality that represents the statement, "Two times a number x, less 15, is greater than or equal to 4 times the number y"?

Answers

Answer:

4y≤2x<15

Please mark me brainliest :))

what is the perimeter of a 12 cm and 4cm

Answers

Answer:

what is the perimeter of a 12 cm and 4cm is16cm

Answer:

32 cm

Step-by-step explanation:

Assuming that the shape is a rectangle with the given two measures:

P = 2(l + w)

P = 2(12 + 4)

P = 2(16)

P = 32 cm

Hope this helps,

Nine more than the product of -8 and a number is -7

Answers

Answer:

-9

Step-by-step explanation:

Answer:

-9

Step-by-step explanation:

I dont know how to explain it but good luck

Anybody know the answer?

Answers

Medicine B. is the most effective because the graph shows a steady downward line which depicts less and less patients with the disease

Wendy’s cell phone bill costs $76.54 each month. This month she has an extra charge of $12.78 added to her bill. How much is her cell phone bill this month?

Answers

Answer:

this month Wendy's cell phone costs $89.32

Step-by-step explanation:

7654

1278

______

8 9 3 2

89,32

⚠️⚠️NEED HELP WILL GIVE 10 BRAINLY ⚠️⚠️

⚠️⚠️PLEASE HURRY ⚠️⚠️

⚠️⚠️DO 29,30⚠️⚠️

Answers

Answer:

Step-by-step explanation:

29 a no

b

30a 64

b yes

Karen owns a seafood restaurant. She orders trout from an online retailer.

Each pound of trout costs $32, and the company charges a $4 fee for

shipping the order. However, if Karen orders 10 or more pounds, the trout

costs only $25 per pound, but the shipping fee is $9.

Which piecewise function models the cost of x pounds of trout?

Answers

Answer:

F (x) = {32x+4, 0 < x < 10

25x + 9, x _> 10

Step-by-step explanation:

sorry if I’m wrong!

Write the slope-intercept form of the equation of the line through the given point with the given slope.
Through: (4,-3), slope= -1/6

Answers

Answer:

dont know .

Step-by-step explanation:

Help I need to answer this in less than 20 minsss!!!!

Answers

The last answer is correct, Solved it.

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