8a+3b=7 solve for b I dont know it.

Answers

Answer 1

Answer:

[tex] b = \dfrac{7 - 8a}{3} [/tex]

Step-by-step explanation:

[tex] 8a + 3b = 7 [/tex]

[tex] 3b = 7 - 8a [/tex]

[tex] b = \dfrac{7 - 8a}{3} [/tex]

Answer 2

Answer:

b = [tex]\frac{7-8a}{3}[/tex]

Step-by-step explanation:

8a + 3b = 7 ( subtract 8a from both sides )

3b = 7 - 8a ( isolate b by dividing both sides by 3 )

b = [tex]\frac{7-8a}{3}[/tex]


Related Questions

The water jug for a basketball team was 7/8 full of water after the game the 8 players poured out 3/5 of the water in the jug. How much water is still there

Answers

The water left in the jug after the players poured out some water is 11/40

How to subtract fraction

Quantity of water in the jug = 7/8Water poured out of the jug = 3/5

Water remaining = Quantity of water in the jug - Water poured out of the jug

= 7/8 - 3/5

= (35-24) / 40

= 11/40

Therefore, the water still left in the jug us 11/40

Learn more about fraction:

https://brainly.com/question/11562149

Alex saved x dollars.
Ethan saved 1/3 more than that.
Write an equation for the amount of money Ethan saved. Be sure to use decimals in your
equation.

Answers

Answer:
Ethan = 1.(3x)

Step-by-step explanation:
Let's split "Ethan saved 1/3 more than that"
That = x
So, Ethan saved 1/3 more than x
Meaning that Ethan = x + 1/3x
Combine like terms
Ethan = 1 1/3x
which equals to
Ethan = 1.(3x)

Hope this helps :)
Have a great day


The expression 2 x – 5 is Select...
1. monomial

2. binomial

3. not a polynomial

4. trinomial

Answers

the answer is the second one bruv if its 2 terms it’s bionomial

WILL GIVE BRAINLEST!!! What is the meaning of (5-2) in the coordinate plane? Select from the drop-down menus to correctly complete the statement. The point (5,-2) is Choose units Choose... and Choose units Choose the origin. ​

Answers

Answer:

1. 5

2. right

3. 2

4. down/below

Answer:

positive 5 negative 2

Step-by-step explanation:

5 is on the y axis and 2 is in the x axis

Please help i struggle with algebra

Answers

Answer:

17

Step-by-step explanation:

multiply both sides of the equation by 8

k + 31 = 48

move the constant to the right-hand side and change its sign

k = 48 - 31

subtract the numbers

k = 17

Which of these tables represents a linear function?

Answers

Answer:

B

Step-by-step explanation:

A linear function is when it is ADDING or SUBTRACTING by the same amount every time. B is the only answer that follows this rule

12 (4 + 1) - 100 divided by 2

Answers

Answer:

-20

Step-by-step explanation:

12 times 5 - 100 divided by 2

Answer:

-68

Step-by-step explanation:

12(4+1)-100/2 = 12(4)+12(1)-100/2

48-12=36-100/2

36-100= -136/2

-136/2 = -68

Help me. (Brainly don't delete my questions)​

Answers

The answer is 63

Hope that helps! :)

Helppppppppppppp please and show work thank you

Answers

Perimeter is (L+W)x2 so 9+13 is 22 multiplied by 2 it’s 44. So your perimeter is 44.

Area is L x W so 9 x 13 which is 117.

Evaluate the equation below.
p + 333 = 350

Answers

Answer:

17

Step-by-step explanation:

350-333 = 17

p = 17

Or...

Subtract 3 from both sides of the equation

p+333=350

+333−333=350−333

p = 17

Answer:

p=17

Step-by-step explanation:

p+333 = 350 (subtract 333 on both sides)

350-333 = 17

p = 17

Urgent! Please help

Answers

Answer:

No

Step-by-step explanation:

It has a proportional relationship until x is 8 because in the other parts of the equation it is 1×2.5 for each equation while at 8=18 it does not follow the same pattern as the previous equations. also sorry if I don't use the right words im just trying to explain what I mean.


Q1 An athlete can run 100 m in 11 seconds.
Calculate the athlete's speed in:
a) m/s
b) km/h.

Answers

Answer:

A.) 9.09

B.) 1.1

Step-by-step explanation:

The velocity in meters per second is equal to the distance in meters divided by time in seconds.

100 meters/ 11 seconds

100 meters is .1 kilometers

.1 kilometers x11 seconds =1.1

What is the value of x? Then determine the measure of each angle.

Answers

Answer:

x = 14°   ||       each angle has 108°

explanation:

first we need to find the total interior angle of this shape:

formula: ( n - 2 ) * 180  ..............where n is the number of sides

( 5 -2 ) * 180

540°

if all sides in the shape are equal, they must have same angle of 9x -18

5 ( 9x -18 ) = 540°

9x -18° = 108°

9x = 108° + 18°

9x = 126°

x = 14°

So each angle has: 9x - 18

                                9(14) - 18

                                108°

What is 2.58333333333 as a fraction?

Answers

Answer:

2 583/1000

Step-by-step explanation:

Answer

To write 2.58333333333 as a fraction you have to write 2.58333333333 as numerator and put 1 as the denominator. Now you multiply numerator and denominator by 10 as long as you get in numerator the whole number.

2.58333333333 = 2.58333333333/1 = 25.8333333333/10 = 258.333333333/100 = 2583.33333333/1000 = 25833.3333333/10000 = 258333.333333/100000 = 2583333.33333/1000000 = 25833333.3333/10000000 = 258333333.333/100000000 = 2583333333.33/1000000000 = 25833333333.3/10000000000 = 258333333333/100000000000

And finally we have:

2.58333333333 as a fraction equals 258333333333/100000000000

If it costs $1.40 per square foot to install the garden, what is the cost for plan A?

Answers

Answer:

$9.80 bro for plan A i hope i help you

Please help with this ASAP.

Answers

Answer: Choice D

Explanation:

I'll use the point-slope form to get the following

[tex]y - y_1 = m(x - x_1)\\\\y - 1 = \frac{3}{4}(x - (-4))\\\\y - 1 = \frac{3}{4}(x + 4)\\\\y - 1 = \frac{3}{4}x + \frac{3}{4}*4\\\\y - 1 = \frac{3}{4}x + 3\\\\y = \frac{3}{4}x + 3 + 1\\\\y = \frac{3}{4}x + 4 \ \ \text{... matches with choice D}\\\\[/tex]

You should find that plugging x = -4 into equation D will lead to y = 1 as a way to confirm the answer.

Answer:

D

Step-by-step explanation:

m = 3/4

point: (-4, 1)

We can use the slope-intercept form. We know one point, so we can use its coordinates for x and y. We also know the slope, so we use the slope for m. Then we solve for b.

y = mx + b

Substitute m with the slope.

y = (3/4)x + b

Use the x-coordinate of the given point for x and the y-coordinate of the given point for y.

1 = (3/4)(-4) + b

Solve for b.

1 = -3 + b

b = 4

Now that we know the value of b, we can write the equation of the line.

y = mx + b; m = 3/4; b = 4

y = 3/4 x + 4

Answer: D

​A person overcharges his bank account by spending the same amount of money each day. After five days of overcharging his bank account, he is $100.00 dollars in debt. Therefore, each day, his account balance changed by how much?

Answers

Answer:

20

Step-by-step explanation:

Why? because 100$ in 5 days is he spent the same much each day then it's 20 because 20 x 5=100

20 x 1=20

20 x 2=40

20 x 3=60

20 x 4=80

20 x 5=100

Can someone plzzz tell me if #14. b. is right plzz

Answers

Answer:

14b.) RS = 60; ST = 36; RT = 96

Step-by-step explanation:

Since you have correctly solved for y = 7, all you need to do for b is to plug in y.

RS = 8(7) + 4 = 60

ST = 4(7) + 8 = 46

(You can add RS and ST or plug in for y for RT)

RT = 15(7) - 9 = 96

Which of the following equations has infinitely many real solutions?
A.
5(x − 8) = 5x − 40
B.
5x + 1 = x − 1
C.
5x + 1 = 5x − 1
D.
5(x − 8) = 5x + 40

Answers

Answer:

Answer: B. 5x + 1 = x - 1

Step-by-step explanation:

[tex]{ \tt{5x + 1 = x - 1}} \\ { \tt{5x - x = - 1 - 1}} \\ { \tt{4x = - 2}} \\ { \tt{x = - \frac{1}{2} }}[/tex]

Find the missing sides and angles for the triangle.

Answers

Answer:

See attachment

Step-by-step explanation:

In attachment

Pls Help 100 pts
Find

XY given A bisects XY,

XY = 5a – 3, and AY = 2a + 6.

Answers

Answer:

Hii! so are you asking for the answer to a graph? do you want the point?

If you do then I think it is (7a, -3) I might be wrong let me know if I am and I'll fix it.

Step-by-step explanation:

23.49 is 27% of what number?

Answers

Answer: 100

Step-by-step explanation: 100 divided by 27= 0.27, 23.49x0.27= 6.34.

I believe the answer is 100

-4x+3y=-4 x-2y = 1 +



this is substitution I really need help​

Answers

Answer:

x = 1

y = 0

Step-by-step explanation:

You did a great job solving one of the equations for a single variable. You solved for x. But what your paper shows is that...it jind of looks like you were going to substitute the 2y+1 into y. BUT you need to substitute it into x.

-4x + 3y = -4

x = 2y + 1

Fill in 2y + 1 into x in the first equation.

-4(2y+1) + 3y = -4

Now you have an equation in one variable. There are only y's in this equation. Next, distribute.

-8y - 4 + 3y = -4

combine like terms.

-5y - 4 = -4

add 4 to both sides.

-5y = 0

divide by -5

y = 0

It's okay that it cam out to be zero. Its fine!

y=0

Put it back in one of the original equations to find x.

x = 2y + 1

x = 2(0) + 1

x = 1

The solution is

x=1

y=0

You can write this as an ordered pair.

(1,0)

What does y = 1x - 3 and y=-x-21 - 3 have in common?

Answers

Answer:  Solve for the first variable in one of the equations, then substitute the result into the other equation.

Point Form:

(

21

2

,

27

2

)

Equation Form:

x

=

21

2

,

y

=

27

2

Step-by-step explanation:

Pls solve now pls pls pls

Answers

red

Step-by-step explanation:

i tink cus it looks like it

PLEASE HELP WITH THIS PLEASE

Answers

3 + √(-3)
= 3 + √(-1 • 3)
= 3 + √(3) • √(-1)
we know that i is √(-1)
Therefore, this whole thing is:
3 + √3 • i

and so in the form of a + bi,
a = 3,
b = √3

Hope this helps

Answer:

the 4th answer : a = 3 and b = sqrt(3)

Step-by-step explanation:

remember that i = sqrt(-1).

so, when you "take out" -1 of -3, you get 3.

sqrt(-3) = sqrt(3×-1) = sqrt(3)×sqrt(-1) = sqrt(3)i

PLEASSEEE HELPPPP ME EITH THIS!!

Answers

Answer:

PQ = 98.21

Step-by-step explanation:

PQ/23 = 47/11

PQ × 11

23 × 47

11PQ = 1081

11PQ/11 = 1081/11

PQ = 98.21

Find the area of the rectangle A

Answers

Answer:

12xy

Step-by-step explanation:

For rectangle A, the length would be (x+3x) and the width would be 3y, so 4x*3y = 12xy

please help I'm begging​

Answers

Answer:

angle x= 136

Step-by-step explanation:

angle on straight line =180

so we do 180 - 96 (angle y)=84

then:

angles in a triangle add up to 180

we do

84 (inside the triangle next to angle y) + 52 (angle z)= 136

180 (all angles in triangle) - 136 (angle y and z)=44

Now we know that the angle inside the triangle next to Angle x is 44

Angles on straight line =180

180-44= 136

angle x = 136

Answer:

Step-by-step explanation:

triangle first:

= y=96

= z=52

= so , 180-96=84

= so, angle b = 84

= the corresponding side should be equal so, angle c = 84

= so x. = 180 - 84

= x = 96

= so , x = 96

so , this is the  triangle theory yehhaaaaa

step by step to solve this expression, 4(5x + 6) = 12

Answers

The answer is X=-0.6.
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