Mathematics High School

substitution method
a=-b+5
2b+a=11

Answers

Answer 1

Answer:

a = -1

b = 6

Step-by-step explanation:

a = -b + 5

2b + a = 11

2b + a = 11

2b + (-b + 5) = 11

2b - b + 5 = 11

b + 5 = 11

b = 11 - 5

b = 6

2b + a = 11

2(6) + a = 11

12 + a = 11

a = 11 - 12

a = -1

Related Questions

Wilma saves $12,000 at the end of every six months for 10 years. Assume 10% compounded semiannually and find the present value.
$149,546.52
$137,547.52
$73,734.84
$195,589.79

Answers

$195,589.79 hope this helos

what is 3.33333333333 as a whole number?​

Answers

3.33333333 as a whole number is 3

(-7 - 2n)(-0.6) simplify equation

Answers

Answer:

4.2  +  1.2 n

hope this helps!

what is 21 1/2 -15 7/10?

Answers

Answer:

5.8 lemme know if im wrong :)

Step-by-step explanation:

Answer:

5 4/5. ( decimal 5.8)

Step-by-step explanation:

21 1/2 -15 7/10

= 43/2 - 15 17/10

=43/2 - 157/10

=29/5

= 5 4/5

The length of the lunch area is 6 1/2 times it's width. If the width of the area is 10 6/13 feet, what is the length in simplest form?

Answers

Answer:the length of the Lunch area= 68 feet

Step-by-step explanation:

Since width of lunch area is given = 10 6/13 feet

and Length  of the lunch area is 6 1/2 times it's width.= 6 1/2  x Width

Length =   6 1/2 x 10 6/13

changing to improper fraction foe easy solving

13/2 x 136/13

13 cancels out 13, we are left with

136/2 =68 feet

Write a linear equation to represent the line shown on the graph.

Answers

Answer:

x=1

Step-by-step explanation:

x=1

Answer:

Hello did have actual quiz it looks like i have the same quiz could yopu send that quiz to me thanks

Step-by-step explanation:

The figure below is composed of two quarter circles and one right triangle
Which measurement is closest to the area of the figure

Answers

Step-by-step explanation:

it's probably A i guess.

Find the length of an altitude of an equilateral triangle with sides of 4 cm.

Answers

Answer:

c.

Step-by-step explanation:

Altitude of Equilateral Triangle h = (1/2) * √3 * a. Angles of Equilateral Triangle: A = B = C = 60° Sides of Equilateral Triangle: a = b = c.

Find the measure of <BAC​

Answers

Answer:

56 degrees

Step-by-step explanation:

solve for p 9p - 3p 05 = 19

Answers

Answer:

p = 4

Step-by-step explanation:

9p - 3p - 5 = 19

First you subtract like terms which gives you

6p - 5 = 19

Then you move the constant to the right and change its sign which gives you

6p= 19 + 5

Then calculate your answer which gives you

6p=24

Then divide both sides by 6 which gives you

p=4

a. Y = x + 7
-5y + 3x = -13
systems of equations

Answers

x = -11; y = -4; (-11, -4)

I’ll love u forever if u can help me with this ASAP PLZZZZ ;)

Answers

Answer:

the answer is A

Step-by-step explanation:

Because

Multiply the first equation by 2  

6x-y=18

Both side multiply 2

12x-2y=36

And then subtract the second equation form the result,

12x-2y=36

4x+2y=26

16x=62

x=3.8

Of the seeds Quincey planted in his tomato garden, 75% grew into mature plants. If Quincey has 39 tomato plants in his garden, how many seeds did he plant?

PLEASE HELP WORTH 70 POINTS

Answers

Answer:

52 seeds.

Step-by-step explanation:

So, 3/4 of his plants have grown. SO, 3/4 = 39 plants, and if we divide by 3, we get 1/4 of the plants are 13 plants. SO, if we want to find 4/4, we can multiply 13*4=52 seeds.

Quincey planted 52 seeds in total.

What is Percentage?

To determine the quantity or percentage of something in terms of 100, use the percentage formula. Per cent simply means one in a hundred. Using the percentage formula, a number between 0 and 1 can be expressed. A number that is expressed as a fraction of 100 is what it is. It is mostly used to compare and determine ratios and is represented by the symbol %.

Given:

75% grew into mature plants.

If Quincey has 39 tomato plants in his garden.

let x number of seed he planted.

So, 75% of x= 39

75x/100= 39

75x = 3900

x = 52

Hence, He planted 52 seeds.

Learn more about Percentage here:

https://brainly.com/question/29306119

#SPJ6

What is 4 2/3 plus 1 6/9 (simplify)

Answers

Answer:

423

Step-by-step explanation:

Answer:

6 + (1/3)

Step-by-step explanation:

4 + (2/3) + 1 + (6/9)

5 + (2/3) + (2/3)

5 + (4/3)

5 + 1 + (1/3)

6 + (1/3)

Simplify the expression 6w + + 3w.

Answers

Answer:

9w

Step-by-step explanation:

they have the same terms so you can add them together. 6+3=9 and keep the term (w)

therefore 6x+3w=9w

Answer:

9w

add the numbers if he variables are the same

therefore you add 6 and 3 to get 9

Hope this helped!

Evaluate q - p when p = 8 and q = 23

Answers

Answer:

15

Step-by-step explanation:

q-p = 23 - 8

= 15

I hope this is correct

Natural logs are the inverse of the_______
function e


A. Rational

B. quadratic

C. Exponential

D. Linear

Answers

Answer:

c i think

Step-by-step explanation:

C. Exponential I believe So

An employee at a homemade wooden toy store earned $860 over the past week. The employee needs to pay 14% for Federal Income Tax and 3% for State Income Tax, both on the initial amount he earned. How much will the employee earn after paying both taxes?
$

Answers

Answer:

146.2

Step-by-step explanation:

Jared bought a package of 20 pens. If 3/4 of the pens had black ink, what is the number of black pens?

Answers

Answer:

We just figure out what 3/4 of 20 is and it is 15 so 15 pens!

Step-by-step explanation:

answer: 15
explanation: 1/4 of 20 = 5( 20 divided by four
1/4 x 3/1 =15/1
5x3 = 15

Can I please get the answer?

Answers

Answer:

24x+10y≥200

Step-by-step explanation:

Answer:

Step-by-step explanation:

[tex]24x+10y\ge 200\\ \\ 12x+5y\ge 100[/tex]

Joe borrowed $9,000 from the bank at a rate of 7% simple interest per year. How much interest did he pay in 7 years?

Answers

Answer:

4410

Step-by-step explanation:

7% simple interest per year for 7 years so 7x7=49

49 % to pay overall so type 49% x 9,000=4410

A rectangular garden is 45 ft wide and 70 ft long. In a drawing, the width is 9 in. Identify the length on the drawing.​

Answers

Answer: the length in the drawing is 1.166666...ft or 14 inches.

Step-by-step explanation:

there are 0.75 ft in 9 inches, and 45/0.75=60. So, to find x you need to divide 70 by 60. :))

If you needed to answer in inches, I found my answer by dividing 45/9 which equals 5, so x=70/5. x=14 inches.

Answer:the other answer will explain all and the answer is 14in I had a quiz on it

Step-by-step explanation:

Plz help me, anyone plz

Answers

35! hope this helps you
35 is the answer ....

Need help asap!
Find a) & b)

Answers

Answer:

- 25 and - 623

Step-by-step explanation:

Using the term to term rule with u₀ = - 3 , then

(a)

u₁ = u₀³ + 2 = (- 3)³ + 2 = - 27 + 2 = - 25

(b)

u₂ = u₁³ + 2 = (- 25)³ + 2 = - 625 + 2 = - 623

Please help I don’t fully get this

Answers

Answer:

First one is C

Second one is B

Step-by-step explanation:

Tell which number is greater.
80%,
17
9
is greater.

Answers

Answer:

80%

Step-by-step explanation:

Answer:

80% is greater.

Step-by-step explanation:

80% is also 8/10. 8/10 is greater than 7/9.

Hope it helps!

what is 3x+5=-8(x+3)

Answers

Answer:

-29/11

Step-by-step explanation:

i used a calculator lol

which similarity statement is true for the triangles shown?

- ABC = DEF
- ABC = FED

Answers

Answer:

I’m pretty sure it’s Triangle ABC is congruent to Triangle DEF.

Step-by-step explanation:

If you rotate Triangle DEF to where the 90 degree angle is on the bottom right, you can the compare the two triangles. You can divide 300/25, 240/20, and 180/15. They all result in 12 meaning they are congruent and similar in that way. (I’m only 90% this is right btw)

yeah, i need help solving this and i need help quick please.

Answers

P=18
Angle e and c are the same because they are opposite interior angles. Therefore you can set it up in an equation like: 117=5P+27 and solve.
117=5P+27 you need to subtract 27 from both sides
90=5P you need to divide both sides by 5 to get
P=18

HELP ASAP!! ILL GIVE BRAINLIEST
Lola went into walmart and spent $22.30 on groceries. She had to pay an additional 7% for taxes. What was Lola's total before taxes?
PLEASE HELP ASAPPP

Answers

Answer:

$23.86 I believe, im a bit rusty lol

Step-by-step explanation:

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