Evaluate the expression when y= 7 and x = 9.
x + 4y

Answers

Answer 1

Answer:

  [1]    9x - 4y = 7

  [2]    x - 4y = -17

 [2]    x = 4y - 17

// Plug this in for variable  x  in equation [1]

  [1]    9•(4y-17) - 4y = 7

  [1]    32y = 160

// Solve equation [1] for the variable  y  

  [1]    32y = 160

  [1]    y = 5

// By now we know this much :

   x = 4y-17

   y = 5

// Use the  y  value to solve for  x  

   x = 4(5)-17 = 3

Step-by-step explanation:

Answer 2

Answer:

9+4(7)

Step-by-step explanation:

Start by replaceing y with 7

Do the same with x


Related Questions

As
MZLON = 113
mZMON = 2x +33°
M

mZLOM = 3x+ 20°
Find mZMON:
Pro

Answers

Answer:

Step-by-step explanation:

113= (2x+33)+(3x+20)

113=5x+53

60=5x

X=12

NOT DONE YET

substitute x value into MON equation to find angle measure

you get 57 degrees


Jose is planning to drive from New York City to Dallas in his car. Jose was curious and started to complete the table shown to indicate how far in mles he can travel for each gallon of gas he uses

How far did Jose travel with 10 gallons of gas?

Answers

Answer:

200 miles

Step-by-step explanation:

you travel 20 miles for 1 gallon, so 10*20=200miles

Answer:

200

Step-by-step explanation:

if you have to dive its 20 times 10 because 20 miles 10 dollars

PLS HELP CORRECT ANSWER GETS BRAINLIEST


Simplify the expression:

(5^8) \ (5^2)


Answers

The answer is 15625

I put this in a calc to check it and it is correct

Answer:

15625

Step-by-step explanation:

Solve the right triangle.​

Answers

Answer:

UW=[tex]2\sqrt{66}[/tex] (already solved for you)

UV=[tex]2\sqrt{33}[/tex]

m∠V=45°

Step-by-step explanation:

You're solving for sine because opp/hyp

sin(45°)*[tex]2\sqrt{66}[/tex]=UV

UV=[tex]2\sqrt{33}[/tex]

2) Now you need to solve for an inverse, and since you know UV, you can use inverse cosine (cos^-1) to find your answer

cos^-1([tex]\frac{11.4891}{2\sqrt{66}}[/tex])

m∠V=45°

BICONDITIONAL: A polygon is a triangle if and only if it has three sides.
INVERSE:
CONVERSE:
CONTRAPOSITIVE:

Answers

Answer:

converse

Step-by-step explanation:

if the conditional statement is “If Q then P

Pls help Asap
I mark u brainliest

Answers

the answer is B i did this before hope this helps


Given: AABC-ADEF
Determine the measure of DF

A)3 cm

B)4 cm

C)5 cm

D)6 cm

Answers

The answer is B because those triangles are congruent

What is the cost of 20 ping pong balls, 2 ping pong paddles , 3 softballs, and 1 soccer ball?

Answers

Answer:

Step-by-step explanation:

How much do the items cost

please help mee (image included)

Answers

Answer:

B

Step-by-step explanation:

It seems more reasonable

15 ounces of canned corn for 2.55$

Answers

Answer:

0.17 over 1

Step-by-step explanation:

So, first we have to find a comman factor. between 255, and 15 the GCF is 15, so 255 ÷ 15 = 17      So that is:

            255 ÷ 15 = 17                

       __________    =  17/1  or 17              15 ÷ 15 = 1

Now we move the decimal into place so its $0.17 becaue 0.17 x 15 = 2.55

CONSIDER GIVING THIS ANSWER BRAINLIEST

Square had a radius of 5 square root 2 find the apothem

Answers

Answer:

Apothem = 5 inches

(circum)radius = 5*sqrt(2) inches

Step-by-step explanation:

8(12+a) i need it done by today!!!

Answers

Answer: 8+96

Step-by-step explanation: if u r lookin for the solution that’s the answer

Answer: 96+8a

Step-by-step explanation: Apply the distributive property.

8⋅12+8a

Multiply

8 by 12.

96+8a

Which mixed number is equivalent to the improper function below? 46/10

Answers

Answer:

B. 4 and 6/10

Step-by-step explanation:

in order to find this answer i've always had a trick where i first off find an even number to divide these with and in this case that would be 4 and then the leftovers would be 6/10 and in this case your answer would be right there 4 and 6/10 but if needed to be simplified it would be 4 and 3/5

hope this helps, if it did please make sure to like and rate and give me the brainliest if possible!

have a good day!

Answer: B you multiply 4 times 10 add it to 6 which is 46/10 it’s how you convert a improper fraction to a mixed number

Step-by-step explanation:

An animal shelter has 20 cats and 25 dogs. What is the ratio of cats to dogs. (Please help)

Answers

Answer:

20:25

Step-by-step explanation:

it can go simpler than that if you want.

it can also be 4:5

Answer:

the ratio of cats to dogs is 20:25

Step-by-step explanation:

The ratio of cats to dogs is 20:25, 20/25, or 20 to 25 :)

Please giving away a lot of points​

Answers

Answer:

umm J.

Step-by-step explanation:

(didn't u select the answer?)

Answer:

the answer is j

Step-by-step explanation:

can u pls help me with this question asap​

Answers

Answer:

a

Step-by-step explanation:

HEY THERE! PLEASE ANSWER THE MATH QUESTION IN THE PHOTO! THE CORRECT ANSWER WILL BE MARKED AS BRAINLIEST ,GET POINTS AND I WILL ALSO FOLLOW YOU! THANKS!
xoxo

Answers

Answer:

(a)Yellow=10

Green=38

Relative Frequency of Blue =0.32

Relative Frequency of Red =0.2

Relative Frequency of Green =0.38

(b)50 Red balls

Step-by-step explanation:

In 100 trials, the following were recorded.

Frequency of Blue Balls = 32

Frequency of Red Balls = 20

Relative Frequency of Yellow Balls =0.1

Now, Relative Frequency =Number of Outcome of an Event ÷ Total Number of Trials in the Experiment

Total Number of Trials =100

Therefore:

Therefore, Number of Outcomes of Green balls=100-(32+20+10)

=100-62

Number of Outcomes of Green balls=38

(b)If the Number of Trials is Increased to 250

Expected Outcome of Red Balls =Relative Frequency of Red Balls X 250

She should expect 50 red balls.

Will give Brain!! Is it yes

Answers

Answer:

I would say yes

Step-by-step explanation: Hope I helped!

please help
i don't know what the steps are​

Answers

Answer:

2x+16+x = -x-5

3x+16 =-5

3x+16-16 = -5-16

3x = 21

divide both sides by 3

x = 7

HELP PLEASE!! I'm giving brainliest to the person who gives me a full correct answer! you'll get 50 points for answering and when i give you brainliest it will give you the other 50 automatically!!!! thank you so much

Answers

----------------------------------

1)

Fact :: Reason

∠DCE = 90° :: sin ∠EDC = sin 30° = 1/2 = 8/16 = CE/DE

∠ACB = 90° :: ∠DCE and ∠ACB are vertical angles

∠ABC = 60° :: 180 - ∠CAB - ∠ACB = 60°

∠CED = 60° :: 180 - ∠EDC - ∠DCE = 60°

△CDE ⁓ △ABC :: Same angles (AAA)

2)

Let's solve for AB

sin 30° = 1/2

sin 30° = BC/AB = 15/AB

1/2 = 15/AB ⇒ AB = 30

AB = 30 in

Let's solve for AC (using another way)

AC/12 = 15/8

AC = 12 * 15 / 8   = 22.5

AC = 22.5 in

------------------------------------

Hope I could help you! If there was anything you didn't understand, don't be afraid to ask in the comments below!

Have a good day! (●'◡'●)

Ben earns $10 per hour and $6 for each delivery he makes. He wants to earn more than $155 in an 8-hour workday. What is the least number of deliveries he must make to reach his goal? a) Write an inequality to model the situation. Use d to represent the number of deliveries

Answers

Answer:

the number of deliveries would be 13

And, the equation is d ≥ 12.50

Step-by-step explanation:

The inequality function is given below:

Let us assume the d be the number of deliveries

10 × 8 + 6 × d ≥ 155

80 + 6d ≥ 155

6d ≥ 155 - 80

6d ≥ 75

d ≥ 75 ÷ 6

d ≥ 12.50

hence, the number of deliveries would be 13

And, the equation is d ≥ 12.50

Jennifer is walking along a giant size number line where each number is a step away. She starts at -19 and then moves to 9. From there she walks to -15, turns around and walks to 16. Here she stops to count her number of steps so far. If she wants to have a total of 100 steps, on what number might she land on this number line?

Answers

-1 or 33

-19 to 9 is 28 steps
9 to -15 is 24 steps
-15 to 16 is 31 steps

28+24+31=83 steps taken

100-83 leaves 17 steps left

Currently on 16 so add or subtract 17

To get -1 or 33

Jennifer might be landed on 33 of the number line.

What is Number system?

A number system is defined as a system of writing to express numbers.

She starts at -19 and then moves to 9

-19 to 9 is 28 steps

19+9=28 steps

From 9 she walks to -15, turns around and walks to 16.

9+15=24 steps

From -15 to 16 she walks

15+16=31 steps

The total number of steps

28+24+31=83 steps

she wants to have a total of 100 steps,

100-83 leaves 17 steps left

Currently on 16 so add or subtract 17

16+17=33 and 16-17=-1

Hence Jennifer might be landed on 33 of the number line.

To learn more on Number system click:

https://brainly.com/question/22046046

#SPJ2

Carolina leaves her house and walks 6 blocks she turns and heads east 8 blocks until she reaches matties house what is the shortest distance between Carolinas house and matties house

Answers

Answer:

10 blocks

Step-by-step explanation:

Given

[tex]First = 6\ blocks[/tex]

[tex]Second = 8\ blocks[/tex] east

Required

Determine the shortest possible distance

To better explain my solution, I've added an attachment that illustrates her movement.

Using the attachment as a point of reference, the shortest distance is calculated by calculating the length of the hypotenuse using Pythagoras theorem.

So, we have:

[tex]x^2 = 6^2 + 8^2[/tex]

[tex]x^2 = 36 + 64[/tex]

[tex]x^2 =100[/tex]

Take positive square root of both sides

[tex]x = \sqrt{ 100[/tex]

[tex]x = 10[/tex]

Pls help Asap 15 points!

Given that 7 x − 7 y = 18
Find x when y = − 6
Give your answer as an improper fraction in its simplest form.

Answers

Answer:

Your answer is x = -24

Hope that this is helpful. Vote and like it

You can invest $200 at 8% for 3 years. Find the simple interest.

Answers

Answer:

$48

Step-by-step explanation:

First, converting R percent to r a decimal

r = R/100 = 8%/100 = 0.08 per year,

then, solving our equation

I = 200 × 0.08 × 3 = 48

I = $ 48.00

The simple interest accumulated

on a principal of $ 200.00

at a rate of 8% per year

for 3 years is $ 48.00.

(2ax² + bx^2) – (2ay2 + by^2)

Answers

Simplified is 2ax^2 + bx^2 - 2ay^2 - by^2

What is the value of c?

Answers

the answer is c=8

hope that helps lolol

Answer: c=8

Step-by-step explanation: All three angles in a triangle add up to 180 degrees so 9c+66+42=180. First add 66 and 42 which is 108, so now you have 9c+108=180. Then subtract 108 from both sides to get 9c=72. Finally, divide each side by 9 to isolate c and you get c=8

aaron walks from his sisters house to his cousins house, a distance of 4 miles, in 80 minutes. what's the equation

Answers

Answer:

4 miles=80 min?

Step-by-step explanation:

Question is confusin bruv

The population of a city has been increasing 3.6% each year. The population in 2005 was 80,000.

Answers

What’s the question?

I have a rectangle house. it is ten feet wide and 20 feet long ​

Answers

Answer:

200 in all

Step-by-step explanation:

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