Mathematics High School

Solve the system using substitution. -2x+5y=19
3x-4=y

Answers

Answer 1

Answer:

answer is x=3 and y=5.... so it is (3,5)

Step-by-step explanation:

you want to combine them so y=3x-4 so subsitute y

-2x+5(3x-4)=19

-2x+15x-20=19

            +20   +20

13x=39

---    ---

13     13

x=3

now subsitute 3 into x into any problem...

3(3)-4=y

9-4=y

and 9-4 is 5 so it is...

(3,5)

pls give me brainliest

Related Questions

proportion multiple choice​

Answers

Answer:

a) x 2

b) x 3

djsjsjkritjtj

Answer:

a is ×2. b is ÷3

Step-by-step explanation:

If you douple the multiple equation the answer will doupled by the same number

But if you triples the divide equation the valu will reduce by 3

what’s the value of x to the nearest tenth?
A. 4.5
B. 5.5
C. 25
D. 5

Answers

The value of x is D.5

Please Help! I'll give brainliest if right!!!!

Answers

Answer:

6

Step-by-step explanation:

Step 1: g(6) = 4 - 2 x 6

Step 2: g(6) = 4 - 12

Step 3: g(6) = -8

Step 4: g(9) = 4 - 2 x 9

Step 5: g(9) = 4 - 18

Step 6: g(9) = -14

(Final Step) Step 7: g(6) - g(9) = -8 - (-14) = 6

I WILL GOVE BRAINLIEST!!!

Answers

Answer:

First of all make me as branlist answer then I will surely send it

What is the monthly fee for Jessica's plan if she does not send any text messages? Show your work.

Answers

Answer:

1.42

Step-by-step explanation:

50÷35=1.42

weekly time cards help

Answers

is it 61.3???
i’m not sure about it

Please answer this question

Answers

Answer: 480

Step-by-step explanation:

What is the value of tan(60°)?
A
12
30°
B
60°
14

Answers

Answer:

the answer is 1.7320508076

A bank loans a customer $75,000 for a period of 12 years. The simple interest rate of the loan is 8.2%. What is the total (loan plus interest) amount that the customer will need to pay the bank over the 12 years?

Answers

If $1000 is invested now with simple interest of 8% per year. ... Find the total amount on deposit at the end of 4 years if the interest is: ... e) compounded monthly, n =12: A = 5000(1 + 0.06/12)(12)(4) = 5000(1.005)(48) = $6352.44 ... When a bank offers you an annual interest rate of 6% compounded continuously,

Jean has $280 in her savings account. Starting next week, she will deposit $30 in her account every week.



Complete the table to show her total savings after 1, 2, 3, and 4 weeks.

Answers

So $280 • 30x
X would be 4
So 30 • 4 + 120
Week 1 - $310
Week 2 - $340
Week 3 - $370
Week 4 - $400

Total after for weeks of saving : $400

Of the 300 television sets sold at an electronics store last month, 90 were flat screen TV's. What is the ratio of flat-screen TV's to other TV's sold last month?

I don't know how to do this. I would appreciate some help. thanks!!​

Answers

Answer:

300 television sets total

300 - 90 flat screens = 210

flat screens 90:210 other TVs

now divide each side of the ratio by a common factor to simplify. I'm going to use 30

flat screens 3:7 other TVs

this cannot be simplified any further so the ratio is

flat screens 3:7 other tvs

Factor the expression.
30x - 12xy =
(Factor completely.)

Answers

Answer:

-6x • (2y - 5)

Step-by-step explanation:

or at least that's what I think

What is the distance formula?

Answers

Answer:

Distance Formula is

Step-by-step explanation:

d=√((x_2-x_1)²+(y_2-y_1)²)

Answer:

that is the formula for you!!!

A baseball team sells tickets for two games. The ratio of sold tickets to unsold tickets for the first game was 7:3. For the second game the ratio was 13:2. There were 240 unsold tickets for the second game. How many tickets we sold the first game.

Answers

2:40, because unsold tickets were true? or no. ask yourself that


Joshua's family went out to dinner. The meals, including tax, cost $78.43. If the
family leaves an 18% tip, how much money was spent on dinner?
A
$14.12
B
$64.31
C$92.55
D
$96.43

Answers

The correct answer is A
14.12

Please help!! I am not good at this

Answers

Answer:

D

Step-by-step explanation:

Answer:

D is the answer

Step-by-step explanation:

What is the sum of the angle measures of a 35-gon ?

Answers

Answer:

The interior angles would be 5940. The exterior angles would add to 360

Step-by-step explanation:

Find the distance from A to C

Answers

Answer: 11 because the distance between A-B is 8 so because it says it on top, then add 3 to it from B to C

Example #3: Solve for a:
4a - b = c

Answers

Answer:

A = c/4 + b/4

Step-by-step explanation:

add b 2 both sides

4a=b+c

divide both side by 4

a = c/4 +b/4

The sides of a regular hexagon is 16ft. What is the area of the hexagon?

Answers

64 squared ft bc if you have one size of the hexagon that is 16 ft you times that by 4 bc you have to multiply all sides to get the area and you should get 64 sq ft if I’m wrong I’m sorry lol

Answer:

665.1

Step-by-step explanation:

The formula for an area of a hexagon is [tex]\frac{3\sqrt{3}}{2}S^{2}[/tex]

the S (side) is 16 so,

[tex]\frac{3\sqrt{3}}{2}16^{2}[/tex]

=[tex]\frac{3\sqrt{3} }{2}256[/tex]

=[tex]3\sqrt{3}[/tex] × 128

= [tex]384\sqrt{3}[/tex]

round to the nearest sq. rt. means that you have to round to the nearest tenth, or 0.1

[tex]384\sqrt{3}[/tex] is 665.10751 as a decimal

665.1 as rounded. Therefore, the area of the hexagon is 665.1 sq ft

Mrs. Merritt, has 75% of her $300 dollar goal, how much money does she have?

Answers

Answer:

She has 225 dollars

Step-by-step explanation:

75% of her $300

Change the percent to decimal form

.75 * 300

225

She has 225 dollars

I will give BRAINLIEST!!! 0.(6) equals what percent. By the way it isnt 60%

Answers

Answer:

lol

Step-by-step explanation:

PLZ HELP IGNORE THE 50 thought

Answers

Answer:

Step-by-step explanation:

4x + 2x + 6 = 90

6x + 6 = 90

6x = 90 - 6

6x = 84

x = 84/6

x = 14

line p is parallel to line Q which set of statements about the angle is true?​

Answers

Answer:

That p is parallel to Q./??

Step-by-step explanation:

14 bugs are crawling on the steps. Some of the bugs are black, and 4 are
green. Choose the number sentence that can be used to find the number
of black bugs.
14 + 4 =
4 +
= 18
4 +
= 14

Answers

Answer:

b  = 14-4

Step-by-step explanation:

Let the number of black bugs be b

Let the number of green bugs be g

If 14 bugs are crawling on the step, then;

b + g = 14 ....1

If there are 4 green bugs, then g = 4

Substitute g = 4 into the equation

b + g = 14

b + 4 = 14

b = 14 - 4

Hence the sentence that can be required to find the number of black bugs is b  = 14-4

Answer:

4 + _ = 14

Step-by-step explanation:

because there are 14 bugs in all and we already know there are 4 green bugs so we put the total at the end and the 4 in the beginning.

The box plots show the heights of trees in two random samples from two different types of trees. Ashley infers that crabapple trees are typically larger than oak trees. Do the sample data in the box plots support Ashley's inference about the population of trees of each type?


yes, because the third quartile of the sample of oak trees and crabapple trees is roughly equal

yes, because the sample median height of oak trees is smaller than the sample median height of crabapple trees

no, because the sample median height of crabapple trees is smaller than the sample median height of oak trees

no, because the sample of crabapple trees covers a larger spread than the sample of oak trees

Answers

Answer:

mira perra deja de hacer eso a mis respuestas u tonta perra miente detente-ve a chupar una polla

Step-by-step explanation:

translate

solve for a
4(2a - 1) = -10(a - 5)

Answers

Answer:

A = 3

Step-by-step explanation:

8a-4=-10a+50

8a-4+4=-10a+50+4

8a=-10a+54

8a+10a=-10a+54+10a

18a=54

54 / 18 = 3

A = 3

the answer would be a=3. to put it more clear, multiply the number outside of the parenthesis. so for example 4•2a is 8a, and 4•-1 is -4. since the -4 has no variable, it would just be 8a-4. next, the -10 times a positive a would be -10a. a positive times a negative is negative. next, do -10•-5 which is positive 50. remember, a negative times a negative is positive! after this, take the 8a-4=-10a+50 and add the constant and the variable (-10a) by the 8a. ALWAYS go right to left when subtracting or adding. you should get 18a. so 18a-4=50. take the negative four and add a positive four because you need to make the sides equal, add the four to 50, and you should get 18a=54. lastly, 54/18 is 3! so, A=3

Help pls! This is due today!

Answers

Answer:

Maybe try multiplying it 12 and 3.14

Answer:

A:113.04

Step-by-step explanation:

Formula for area of a circle is pi x r^2. So 3.14 x 6^2=113.04

please help i will mark branliest and rank up

Answers

Answer:

C 2 and 7 are interior angles

Step-by-step explanation:

Alternate Interior Angles are a pair of angles on the inner side of each of those two lines but on opposite sides of the transversal.

PLEASE ANSWER!! I WILL GIVE BRAINLIEST IF YOU TELL ME THE CORRECT ANSWER AND HOW TO SHOW MY WORK FOR IT!! (MUST SHOW WORK TO GET BRAINLIEST)

Answers

Answer:

For the first question, the answer is 32 oz.

For the second question, the answer is 16 oz.

Step-by-step explanation:

For the first one, since there are 16 ounces in a pound, we can assume that since she has 3 pounds of fudge, she would have 48 ounces. She then eats one pound of fudge, which means we subtract 16 from 48 getting us to 32 ounces.

For the second question, it states that she gives one half of her fudge to her sister. 2 times 1/2 is 1, and since there are 16 ounces in a pound, she therefore gave 16 ounces of fudge to her sister.

Answer:

1. 32 ounces

2. 16 ounces

Step-by-step explanation:

Question 1

First, you have to subtract. The equation for the subtraction is 3-1 because the student took 1 pound of fudge away from the 3 pounds she already has. And 3-1 equals 2. Now, you have to convert 2 pounds to ounces. Lastly, multiply 2 by 16 as it says in the picture (it says 16 ounces equals 1 pound). The answer to this equation can be expressed as 32 or 32 ounces.

Question 2

First, you have to take information from the previous question which is that she has 2 pounds of fudge left. Then, she gives [tex]\frac{1}{2}[/tex] of the fudge to her sister, so you have to divide 2 by [tex]\frac{1}{2}[/tex] which is 1. Now, you have to express 1 as ounces as shown in the picture. You just have to multiply 1 by 16 which is 16. Therefore the answer can be expressed as 16 or 16 ounces.

Other Questions
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