Solve using substitution.

–10x − 8y = –18
x = 9

Answers

Answer 1

Answer:

y=-9

Step-by-step explanation:

-10(9)-8y=-18

solving for y.


Related Questions

A cone has volume 12pie cubic inches. Its height is 4 inches. What is its radius?
A.) 6 inches
B.) 4 inches
C.) 12 inches
D.) 3 inches​

Answers

Answer:

r = 3

Step-by-step explanation:

The formula of a volume of a cone

V= 1/3 pie r^2 H

r - radius

H - height

We have V = 12π in³ and H = 4 in. Substitute:

The radius of the cone is 3 inches

Volume of a conev = 1 / 3 πr²h

where

h = height

r = radius

Therefore,

v = 12π

h = 4

12π = 1 / 3 × π × r² × 4

12 = 4  /3  r²

36 = 4r²

r² = 36 / 4

r = √9

r = 3 inches

learn more on cone here:https://brainly.com/question/9837241

PLEASE HELP MEH!! I NEED THIS BY TODAY!!
1. Scarlett has a loyalty card good for a discount at her local pharmacy. The item she wants to buy is priced at $26, before discount and tax. After the discount, and before tax, the price is $22.62. Find the percent discount.

Answers

Answer:

13% off

Step-by-step explanation:

22.62/26= 87

100-87=13

please help asap also brainly

Answers

It’s number 1 I know because I took the quiz

What is the best estimate of the area of the figure in square inches?

Answers

Answer:

100.26 squared inches

Step-by-step explanation:

(πr²)/2 + lb + (bh)/2

= 28.26 + 60 + 12

2.72603 in two decimal place

Answers

Answer :2.73
Always look at the third decimal place and if it’s 5 or above then make the second digit bigger by 1

Zack gets paid $8 an hour to babysit. The amount of money he earns depends on the number of hours he babysits.
Which is the dependent variable, and which is the independent variable

Answers

Answer:

$8 is the independent variable.  The amount he earns is the dependent variable.

Step-by-step explanation:

No matter what he is making $8 an hour is a constant.  While how much he makes is dependent on how much he works.

14. Cookies call for 2.25 cups of flour for every .75 cups of brown sugar. How much sugar would be needed for a batch using 5 cups of flour?

Answers

Answer:

i think it would be 12.4 sugar needed for a batch

Answer What is the value of p in the linear equation

−4
−2
2
4

Answers

More information please


The marked price of an article is Rs 2,800 which is 40 % above the cost price. If it
is sold by allowing 20 % discount, what will be the profit percent?

Answers

Answer:

mp=2800

mp=cp+40%ofcp=cp+40/100×cp=1.4cp

2800=1.4çp

cp=2800/1.4=2000

discount=20%

profit%=?

Step-by-step explanation:

sp=mp-discount%of mp=2800-20/100×2800=2240

profit=sp-cp=2240-2000=240

profit%=profit/cp×100%=240/2000×100%=12%

Help please! i have gymnastics soon

Answers

Answer:

A)

Step-by-step explanation:

The answer is A for sure

hello! I need a bit of help here ​

Answers

because it doesn’t go on for 15 hours only for 9

lead has a density of 11.35g/cm'3. a lead ball weighs about 2kg. what is the radius of this ball

Answers

Answer:

The radius of the ball is 3.48 cm

Step-by-step explanation:

Density

The density of a substance is the mass per unit volume. The density varies with temperature and pressure.

The formula to calculate the density of a substance of mass (m) and volume (V) is:

[tex]\displaystyle \rho=\frac{m}{V}[/tex]

The density of lead is \rho=11.35\ g/cm^3 and the mass of a ball of lead is m=2 kg=2,000 g. We can calculate the volume by solving for V:

[tex]\displaystyle V=\frac{m}{\rho}[/tex]

[tex]\displaystyle V=\frac{2000\ g}{11.35\ g/cm^3}[/tex]

[tex]V=176.2115\ cm^3[/tex]

Since the shape of the object is a sphere, and the volume of a sphere of radius r is:

[tex]\displaystyle V=\frac{4}{3}\cdot \pi\cdot r^3[/tex]

We can solve for r and obtain:

[tex]\displaystyle r=\sqrt[3]{\frac{3V}{4\pi}}[/tex]

Substituting:

[tex]\displaystyle r=\sqrt[3]{\frac{3*176.2115}{4\pi}}[/tex]

[tex]\displaystyle r=\sqrt[3]{42.0674}[/tex]

[tex]\boxed{r=3.48\ cm}[/tex]

The radius of the ball is 3.48 cm

Can someone help me with these problems 5-8 I would appreciate it

Answers

Answer:

5. C

6. sry I dont know!

7. sry i cant help

8. dont know ths one either! so sry!

Step-by-step explanation:

Order of Operations Question
P
E
M
D
A
S

Answers

Answer:

c.

Step-by-step explanation:

Answer:

C

Step-by-step explanation:


Help help help help help

Answers

Answer:

The equation of the line is:

y = 3x

Step-by-step explanation:

Given the table

x             y

0            0

1             3

2            6

3            9

4            12

The slope-intercept form of the line equation

[tex]y = mx+b[/tex]

where

m is the slopeb is the y-intercept

Taking the two points from the table

(1, 3)(2, 6)

Determining the slope between (1, 3) and (2, 6)

(x₁, y₁) = (1, 3)

(x₂, y₂) = (2, 6)

Using the formula

Slope = m =  [y₂ - y₁] /  [x₂ - x₁]

               =  [6 - 3] / [2 - 1]

               = 3 / 1  

               = 3

Thus, the slope of the line = m = 3

We know that the value of the y-intercept can be determined by setting x = 0 and determining the corresponding value of y.

From the table, it is clear

at x = 0, y = 0

Thus, the y-intercept b = 0

now substituting m = 3 and b = 0 in the slope-intercept form of the line equation

y = mx + b

y = 3x + 0

y = 3x

Therefore, the equation of the line is:

y = 3x

The graph of the line equation y = 3x is also attached.

A line graph titled Car Mileage for a Hybrid Car has number of gallons on the x-axis, and number of miles on the y-axis. 1 Gallon is 60 miles, 2 gallons is 120 miles, 3 gallons is 180 miles, and 4 gallons is 240 miles.
What is the value of y when the value of x is 1?
Free 50 pts its [60]

Answers

Answer:

60

Step-by-step explanation:

Answer:

Step-by-step explanation:

What is the value of y=10x+2 when x=4

Answers

Answer:

y = 42

Step-by-step explanation:

Given

y = 10x + 2 ← substitute x = 4

y = 10(4) + 2 = 40 + 2 = 42

Answer:

=42

Step-by-step explanation:

y=10(4)+2

10 x 4 = 40

40 + 2 = 42

y=42

What Percent of 25 is 10 ?

Answers

Answer:

40

Step-by-step explanation:

Answer:

40% (see below)

Step-by-step explanation:

First, make a ratio to simplify your situation:

Think about it like this:

If 25 is 100%, and the question is asking me for 10, which is x%, then what is x%?

Here's what I'm talking about:

10               x%

------    =    --------

25            100%

Now, just cross multiply and simplify:

1000 = 25x

   40 = x

      x = 40

To check your answer, you can multiply 25 by 0.4 (the decimal form of 40%) to see if it worked because 40% of 25 is 10:

25 (0.4)

   10

At a given high school, the probability that a student is taking a geometry class is 0.24. The probability that a student is taking a chemistry
class and a geometry class is 0.18.
If a student is taking a geometry class, what is the probability that the student is also taking a chemistry class?

Answers

Answer:

0.24

Step-by-step explanation:

plz help me do these please its hard you have to make them into decimals round to the nearest hundreth if nessesery. plz and thank you​

Answers

Answer:

3: 0.625

4: 2.2

7: 1.083

8: 4.285

11: 1.1

12: 0.08

Step-by-step explanation:

Answer:

3. 0.625

4. 0.364

7. 1.083

8. 4.286

11. 1.1

12. 0.08

Step-by-step explanation:

i did my best, sorry if its wrong :)

please help me on this will give you brainliedt

Answers

Answer:

x = 38

Step-by-step explanation:

Exterior Angle Theorem

x + 99 = 137

subtract 99 from both sides and...

x = 38!

Answer:

137-99 would equal the missing angel which is 38°

The mean of Evelyn’s scores was 138. Complete the chart to find the distances from the mean for each of Evelyn’s scores.

x =
y =
z =

Answers

Answer:

X=13

y=1

z=7

Step-by-step explanation:

Answer:

X=13

y=1

z=7

Step-by-step explanation: its right

Question 2

If MNP = 107, what is NMQ?

Answers

Answer:

73 degrees

Step-by-step explanation:

73 degrees is the answer i think

A rectangular prism has a length of 2 inches, a width of 4 1/6 inches and a height of 6 inches. What is the volume of the figure?

Answers

Answer:

K

Step-by-step explanation:

how do you find valume in a square.

Answers

Answer:

Since each side of a square is the same, it can simply be the length of one side cubed. If a square has one side of 4 inches, the volume would be 4 inches times 4 inches times 4 inches, or 64 cubic inches.

Step-by-step explanation:

Since each side of a square is the same, you can just multiply each side. For example if a square had one side of 4 inches, just multiply 4 inches 4 times

how fast does the squirrel run? if you help me ill mark you brainliest​

Answers

Answer:

The squirrel runs 11 miles per hour.

Explanation:

Speed can be found from the the slope of the graph of distance over time. From this graph the easiest point to calculate this on is the two endpoints. Slope is rise/run. In this graph Y has increases by 11 miles (rise) at the point where time has increased by one hour (run). So the speed can be found with 11 miles/ 1 hour which equals 11 miles per hour.

Answer if correct 70 points Brainly

Answers

Answer:

I am not very sure, but I think the answer is

D.

Answer:

answer is d becuase i took the test and got it right

Step-by-step explanation:

the link is visable tho

mrs moore is doing laundry and has various pieces of clothing in her laundry basket. what is the probability of selecting a top rather than a bottom ( 3 pants and 1 top)

Answers

not likely but maybe lets say their was more clothes there would still be more pants

The manager at Gabriela's Furniture Store is trying to figure out how much to charge for a book shelf that just arrived. The book shelf was bought at a wholesale price of $147.00, and Gabriela's Furniture Store marks up all furniture by 60%

Answers

The answer is 235.2 dollars

Explanation: find one percent of 147 (1.47) and multiply it by 60 then add that to 147.

17. The base of a parallelogram is 10 meters. The height is one fourth of the base. Find the area of the parallelogram.

pleaaeee help

Answers

Answer:

25m2

Step-by-step explanation:

b = 10

10 divided by 4 = 2.5

h = 2.5

2.5 times 10 = 25m2

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