Solve using substitution. y = 1
3x − 7y = 8

Solve Using Substitution. Y = 1 3x 7y = 8

Answers

Answer 1

Answer:

(5, 1)

Step-by-step explanation:

Substitute:

[tex]3x - 7*1 = 8\\3x - 7 = 8\\3x = 15\\x = 5[/tex]

so the solution is (5, 1)


Related Questions

Can someone help me with this? Please n thank u

Answers

Answer:

1. 15°

2.64°

3. 50°

4.38°

Step-by-step explanation:

A bike is on sale for 45% off of the regular price. If the sale price is $299.75, what was the original price?

Answers

666.11
299.75/.45=666.11

since you’re looking for original price instead of the price on sale, you would do the opposite which is to divide.

Answer:

the original price is 545$

Step-by-step explanation:

299.75$ : 55$ = x : 100

55x = 299.75 x 100

55x : 29975

divide 29975 by 55 =

545

The camp cook made 5 5/8 pints of baked beans. Each serving of beans is 5/8 of a pint. How many servings of beans did the cook make?

Answers

5⅝ = 45/8
45/8 pints * (1 serving)/(⅝ pint) = 9 servings

Why do the points ( 3 , 2 ) , ( 5 , 4 ) and ( 7 , 6 ) not form a triangle ?

~Thanks in advance ! ​ツ

Answers

Answer:

Because it doesn't form a triangle, it doesn't even form a shape in general, it only forms a linear line.

Step-by-step explanation:

Here is a picture down below so you can see what I mean. No triangle just a line

What is the slope of a line perpendicular to the line whose equation is 2x-10y=100

Answers

Answer:

-5

Step-by-step explanation:

To find the perpendicular line, first rearrange this into slope intercept form.

y= mx + b

2x - 10y = 100

-10y = -2x +100

y = 1/5x - 10

The slope of a perpendicular line has a slope that is the receipt I’ll of and opposite of this line. The slope here is 1/5 so flip it and you have 5/1. It will also be negative since that slope was positive.

1/5 —> 5/1 —> -5

please help like right now​

Answers

Answer:

y-interceptSloperise over runnegativepositiveUndefinedZeroSlopey-intercept

Step-by-step explanation:

I'm not sure about what the answer is for the last two questions. If somebody else does know please right it in the comment section. :)

The value of y varies directly with x. If x = 5 when y = 12, what is the value of x when y = 30?

Answers

Answer:

12

Step-by-step explanation:

12/5 = 2.4

2.4(x)

if x = 5 then,

2.4(5) = 12

Answer:

12.5 or 25/2

Step-by-step explanation:

you do 30/12 get 2.5 then do 2.5 times 5 to get 12.5 or 25/2

A grocery store sells 6 bottles of water for $4 and 18 bottles for $10. Is the cost of the water proportional to the number sold?

Proportional

Nonproportional​

Answers

Answer:

Non Proportional​

Step-by-step explanation:

Make a proportion:

For example say you want to test out how many bottles of water you can buy for $10

Proportion:

4 - 6

10 - ?

Solve: 10×6÷4=15

So technically, you could only get 15 bottles for $10. Therefore, this is a non proportional problem.

The answers too them

Answers

Answer:

$324.37

Step-by-step explanation:

First question already answered in other post.

Second Question:

Original price before discount and tax: $354

Discount: 15%

100% - 15% = 85% = 0.85

0.85 * $354 = $300.90

Tax: 7.8%

100% + 7.8% = 107.8% = 1.078

1.078 * $300.90 = $323.37

Answer: $324.37

Help plssss! What is the volume of this composite solid?

Answers

Answer:

B.

(づ ̄ ³ ̄)づHave A nice day Cute Sir

Answer:

Step-by-step explanation:

160

4 1/5 x 5/14 in its simplest form

Answers

Answer:

1.5 as fraction it is  3/2 in simplest form

Step-by-step explanation:

The simplest form of the expression given is 3/2

What is an expression?

A mathematical statement containing variables, numbers and connected by a mathematical operator is called an expression.

Given that, an expression  [tex]4\frac{1}{5}[/tex]  × [tex]\frac{5}{14}[/tex]

We are asked to simplify them,

[tex]4\frac{1}{5}[/tex]  × [tex]\frac{5}{14}[/tex]

= 21 / 5 × 5 / 14

= 21 / 14

= 3/2

Hence, the simplest form of the expression given is 3/2

Learn more about expressions, click;

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*PLEASE ANSWER!!! QUICK*
Which equation has 12 as the solution?

a.) 4x + 2 = 2x + 10

b.) -5 + 2x = 4x - 13

c.) 6x – 7 + 3 = 32 + 3x

Answers

Answer: C

Step-by-step explanation:

6x-7+3 = 32+3x> 6x - 4 = 32+ 3x > 3x = 36 > x = 12

20% of what number is 36?
Provide an exact fraction answer. (Mixed fraction) please show how you got your answer ;) Thank you in advance

Answers

Answer:

180

Step-by-step explanation:

180 * .2 = 36

20% is the same thing as 1/5 of something, so read the question again,

"36 is 1/5 of what number?"

Multiply 36 by 5 to get 180

Double check yourself by finding 20% of 180

180 * .2 = 36

Hope this helped, queen!

Caterer A charges $15 per person and $100 to set up tables. Caterer B charges $20 per person and $50 to set up tables.

For what number of guests will the cost of Caterer A be the same as the cost of Caterer B? number or guest

Answers

Answer:

Number of guests = 10

Step-by-step explanation:

Given that:

Caterer A charges $15 per person and $100 to set up tables. Caterer B charges $20 per person and $50 to set up tables.

Let,

x be the number of guests.

A(x) = 15x + 100

B(x) = 20x + 50

For the cost to be equal;

A(x) = B(x)

15x + 100 = 20x + 50

100 - 50 = 20x - 15x

50 = 5x

Dividing both sides by 5

[tex]\frac{5x}{5}=\frac{50}{5}\\x=10[/tex]

Hence,

Number of guests = 10

what is the measure of <A in the triangle below​

Answers

Answer:

∠A = 62°

Step-by-step explanation:

∠ACB = 180 - 116 = 64°

∠A + ∠B + ∠C = 180°

(3x - 13) + (2x + 4) + 64 = 180°

3x + 2x - 13 + 4 + 64 = 180°

5x + 55 = 180°

5x = 180 - 55

5x = 125

x = 125/5

x = 25

∠A = 3x - 13

∠A = 3(25) - 13

∠A = 75 - 13

∠A = 62°

PLS help quickest and accurate answer gets brainliest Mrs. Meadows wants to tile a wall to serve as a splashguard above a basin in the basement. She plans ot use equal-sized tiles to cover an area that measures 48 inches by 36 inches. What is the area of the maximum-size square tile Mrs. Meadows can use and not have to cut any of the tiles? Write your answer as inches squared.

Answers

Answer

1729 in^2

Step-by-step explanation:

48 in x 36 in= 1728 in^2. A=LxW

Given: in a right triangle, cot0 = 28/45
1. what is csc0
2. what is sec0

Answers

Answer:

i)    [tex]cosec0 = \frac{hypotenuse}{opposite side} = \frac{53}{45}[/tex]

ii)   [tex]sec0 = \frac{hypotenuse}{adjacent side} = \frac{53}{28}[/tex]

Step-by-step explanation:

Step(i):-

Given that    

                 [tex]cot 0 = \frac{28}{45} = \frac{adjacentside}{opposite side}[/tex]

Hypotenuse AC² = AB²+BC²

    ⇒             AC² = 45²+28² = 2809

   ⇒             AC = √2809

 ⇒              AC = 53

Hypotenuse  AC =53

Step(ii):-

i)    [tex]cosec0 = \frac{hypotenuse}{opposite side} = \frac{53}{45}[/tex]

ii)   [tex]sec0 = \frac{hypotenuse}{adjacent side} = \frac{53}{28}[/tex]

A grocery store sells a bag of 3 oranges for $2.61. What is the cost of oranges, in
Ullars
per orange?

Answers

Answer:

.45

Step-by-step explanation:

Convert decimals to fractions

.37

2.4

.33

Please help

Answers

Answer:

1. 37/100

2. 2 2/5 or 12/5

3. 33/100

Step-by-step explanation:

Answer: 37/100.

2 2/5.

33/100

Step-by-step explanation:

I recommend using symbolab.com for further steps and calculator

What is the slope of y = 1 + 5?

Answers

Answer:

1

Step-by-step explanation:

I'm guessing it's 1x, but the first number is always the slope.

(hope this helps!)

Solve and check
y = 3x - 10
y = 2x - 5

Answers

Answer:

This is the subtraction method

Y -3X = -10

(-Y -2x = -5)  -Y + 2X = 5

Y -3X = -10

-Y + 2X = 5

      -X = -5

X = 5  Now fill in the 5 for X and Y =  5

Answer:

x = 5, y = 5

or

(5, 5)

Step-by-step explanation:

they both equal y so they also equal each other.

3x - 10 = 2x - 5

3x - 2x = -5 + 10

x = 5

substitute x for 5

y = 3x - 10

y = 15 - 10

y = 5

edit, whops forgot to check

just plug the variables in with their values and see if it makes sense:

y = 2x - 5

5 = 2*5 - 5

5 = 10 - 5

5 = 5

since 5 does equal 5, the solution is correct.

a) Solve 3(x – 5) = 18

Answers

the answer is x=11
step by step explanation:

Answer:

x = 11

Step-by-step explanation:

3(x-5) = 18

Step one: Distrubute 3 to the numbers in the parenthesis.

3x - 15 = 18

Step two: Add 15 on both sides

3x = 33

Step three: Divide by 3 on both sides

x = 11

Consider the 4th roots of 16[cos(π) + i sin(π)].

The roots are located on a circle with center at the origin and radius of ....
The arguments of two successive roots differ by.... π units along the circumference of a circle.

Answers

Answer:

2          1/2  

Step-by-step explanation:

The roots are located on a circle with a center at the origin and a radius of 4. The arguments of two successive roots differ by (1/2)π units along the circumference of a circle.

What is the Circumference of a circle?

The circumference of a circle is defined as the product of the diameter of the circle and pi.

The 4th roots of 16[cos(π) + i sin(π)] are the 4th roots of -16i. These roots are located on a circle with a center at the origin and a radius of 4 because the 4th roots of a complex number are equally spaced on a circle with a radius equal to the absolute value of the complex number.

The arguments of two successive roots differ by π/2 units along the circumference of a circle. This is because there are 4 roots and the circle has a circumference of 2π, so each root is spaced 2π/4 = π/2 units apart along the circumference of the circle.

For example, the first root is located at (4, 0) on the complex plane, which corresponds to an argument of 0.

The second root is located at (0, 4) on the complex plane, which corresponds to an argument of π/2.

The third root is located at (-4, 0) on the complex plane, which corresponds to an argument of π.

The fourth root is located at (0, -4) on the complex plane, which corresponds to an argument of 3π/2.

Thus, you can see that the arguments of the roots differ by π/2 units.

To learn more about the roots of complex numbers click here:

https://brainly.com/question/28182680

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Write an equation of the line with the given slope and y-intercept.


slope: −3

y-intercept: 5

y=

Answers

Answer:

Y=-3X+5

Step-by-step explanation:

answer is : - 3x+5 , have a good day .

Find the measure of angle B

Answers

Answer:

15 - 86

16 - 115

17 - 60

18 - 74

Step-by-step explanation:

Dax is buying coffee for 5 people in his office. He also leaves a $2.00 tip for the barista.

If his total, with tip, is $18.25, how much is each cup of coffee, not including the tip?

Answers

16.25 should be your answer

Answer:

3.25

Step-by-step explanation:

Factor: y = x^7 + 65x^4 + 64x​

Answers

Answer:

y=x^7+65x^4+64xu200b

Step-by-step explanation:

300g of bananas cost £1.80. how much does 1kg cost?

Answers

Maybe try dividing by 300 and timesing by 1000?

Answer:

£6

Step-by-step explanation:

300 g = .3 kg

We can use ratios to solve

.3 kg             1 kg

------------- = -----------

1.8                     x

Using cross products

.3x = 1 * 1.8

.3x = 1.8

Divide each side by .3

.3x/.3 = 1.8/.3

x =6

HELP!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

3

Step-by-step explanation: set the two equations equal to each other. 5-2x=-4x+9 and you'd get x=2. insert 2 into the expression, and you'd get 1. to find the perimeter, a triangle has 3 sides. 1+1+1 =3

The dimensions of a rectangle are given in terms of S as shown below or above.

Q. Which expression represents the perimeter of the rectangle? Mark all that apply.

Answers

Answer:

A and D

Step-by-step explanation:

It should be Sx2 + 2(S+ 1/2)

Which is equal to 4s+1

and 2(2s + 1/2) is equal to 4s+1 as well

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