Mathematics High School

PLEASE HELP. WILL GIVE BRAINLIEST AND WORTH 60 POINTS.

Solve each equation using substitution. Answers are on the right and questions are on the left.

PLEASE HELP. WILL GIVE BRAINLIEST AND WORTH 60 POINTS. Solve Each Equation Using Substitution. Answers

Answers

Answer 1

Answer:

Q1. No solutionQ2. (5, 6)Q3. Infinitely many solutionsQ4. No solutionQ5. (2, 3)

Step-by-step explanation:

Q1.

y = -1/3x - 1x + 3y = -12

Solution

x + 3(-1/3x - 1) = -12x - x - 3 = -12-3 = -12

No solution

Q2

y = 2x - 4y = x + 1

Solution

2x - 4 = x + 1x = 5y = 6

(5, 6)

Q3

y = -3x + 36x + 2y = 6

Solution

6x + 2(-3x + 3) = 66x - 6x + 6 = 66 = 6

Infinitely many solutions

Q4

- 5x + y = 1- 10x + 2y = -2 ⇒ -5x + y = -1

Solution

1 = -1

No solution

Q5

y = 1/2x + 2y = x + 1

Solution

1/2x + 2 = x + 11/2x = 1x = 2y = 3

(2, 3)

Related Questions

Samantha buys a shirt that costs $28.50. She uses a
30% coupon. What will Samantha pay for the shirt?

Answers

Samantha buys a shirt that costs $28.50. She uses a
30% coupon. What will Samantha pay for the shirt?
ANSWER IS 8.55

Somebody help ya plz

Answers

Answer:

9

Step-by-step explanation:

They're vertical angles, so they are equal:

5x + 4 = 49

subtract 4 from both sidese

5x = 45

divide both sides by 5

x = 9

Answer: x=9

Step-by-step explanation: First of all, the two shown inner angles are equivalent. This allows you to set up an equation like: (5x+4)=49

Then simply use algebra to solve...

(5x+4)=49

-4 -4 (subtract "4" from each side)

5x=45

5x/5=45/5 (divide each term in the equation by "5")

x=9

Hope this helps!

f(x)=-x^2-14 find f(9)
Evaluate the function

Answers

f(x)=x2−14 is the answer

Solve |5x+15|=10x. Identify the solution and an extraneous solution.

Answers

|5x+15|=10x

5x+15=10x 5x+15=-10x
-5x -5x -5x -5x
15=5x 15=-15x
divide by 5 divide by -15
3=x -1=x

please help and please explain how you got the answer, thank you!!

Answers

Answer:

327

Step-by-step explanation:

[tex]\frac{(3+9)8}{2} (2)+9(11)+8(11)+3(11)+10(11)=96+88+33+110\\ = 327[/tex]

Answer:

60

Step-by-step explanation:

So we have all four side lengths: 8, 3, 10, and 9. Since there's one diagonal side, the best way to solve this is to split the shape in two. So the area of the first shape would be 24 because 8 x 3 is 24. The other one would be different. The side length is 8, so we multiply 9 by 8 and get 72. But since it's a triangle, we have to divide that by 2. Then we get 36. If you add 36 and 24, you get 60. That would be your area.

which of the following systems of equations would have infinitely many solutions?

y=4x-1 and 4x+5
y=x and y=0
y=2x-1 and y=2x-1
y=3x-2 and y=2x-3​

Answers

9514 1404 393

Answer:

  (c)  y = 2x-1 and y = 2x-1

Step-by-step explanation:

A system of equations in which both equations describe the same line will have infinitely many solutions (all points on that line).

The same line is (obviously) described by the (identical) equations ...

  y = 2x-1 and y = 2x-1

Taylor has dd dimes and qq quarters. She has a maximum of $4 worth of coins altogether. Write this situation as an inequality.

Answers

Answer: .10d+.25q<_ 4

Step-by-step explanation:

d= dimes and q = quarters

dimes are worth .10 and quarters are worth .25

The inequality for the given situation is

0.1d + 0.251 ≤ 4

What is inequality?

It shows a relationship between two numbers or two expressions.

There are commonly used four inequalities:

Less than = <

Greater than = >

Less than and equal = ≤

Greater than and equal = ≥

We have,

10 dimes = 1 dollar

1 dime = 0.1 dollar

4 quarters = 1 dollar

1 quarter = 0.25 dollar

Now,

The maximum amount is $4.

So,

0.1d + 0.251 ≤ 4

Thus,

The inequality is 0.1d + 0.251 ≤ 4.

Learn more about inequalities here:

https://brainly.com/question/20383699

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Walter invested some money at 5% simple interest for 3 years and earned $300. What was the amount he invested?

Answers

the young lad invested 6000$

Answer:2000

Step-by-step explanation:

Please help!!
Will mark brainliest

Answers

Answer:

y=+2

Step-by-step explanation:

Every advancement in boxes, gives 2 to the next box. the rate of change would be 2/1

Y-multiplied by 2 because each time it doubles for example, -2*2=-4. Also -1*2=-2, 0*2=0 and so on

Using the number 4236, how many numbers up to 20 does it divide without a reminder?
Is there a pattern?
What can you say about these numbers?
Please answer ASAP​

Answers

Answer:

6 numbers it can be divided without a reminder. They are also even numbers.

If the sin 30° is one half, then the cos ________° = ________.

60°; one half
30°; square root 2 over 2
60°; square root 3 over 2
30°; 1

Answers

Step-by-step explanation:

[tex]sin(a) = cos(90 - a)[/tex]

60°= one half

Answer:

The answer and most correct out of the options given is answer "A."

Step-by-step explanation:

Took the test, the person above is right I can confirm. I know a lot of people want confirmation for these answers.

Alex took 5 exams in class. His scores on the first four exams were 75%, 68%,
92%, and 100%. What does Alex need to score on the fifth exam to have an
average of 85%?
90
086
94
82

Answers

He needs to score a 94 on the test to average 85% on all tests.
75+68+92+100+94=429 429/5=85.8

Simplify 2x + 8x + 3 + 9 by combining like terms

Answers

Answer:

10x+12

Step-by-step explanation:

Answer:

10x+12

Step-by-step explanation:

I combined the like terms

i would really appreciate if someone could explain the process to solve it

Answers

Answer:

x = 12°

Detailed explanation down below.

Step-by-step explanation:

Ill be delighted to help

8° + 6x is an exterior angle. The measure of an exterior angle of a triangle is equal to the sum of the measures of the two non-adjacent interior angles.

In this situation, those two angles are 30° and 4x+2°

So lets put this in an equation

30° + 4x + 2° = 8° + 6x

4x + 32° = 6x + °8

Now lets subtract 8° from both sides to make it simpler

New equation =

4x + 24° = 6x

Lets evaluate X=

6x - 4x = 24°

2x = 24°

x= 24/2

x= 12°

Is 21/2 simplified ?

Answers

Answer: 21/2 can not be simplified anymore!!

Step-by-step explanation:


Which table matches 4x+7y=19?

Answers

Answer:

c

Step-by-step explanation:

The table which matches 4x + 7y = 19 is table (d).

What are Linear Equations?

Linear equations are equation involving one or more expressions including variables and constants and the variables are having no exponents or the exponent of the variable is 1.

Given is a linear equation,

4x + 7y = 19

(a) When x = -18,

7y = 19 - (4 × -18) = 91 ⇒ y = 13

When x = 1,

7y = 15 ⇒ y = 2.14

So the table (a) is not the one.

(b) When x = -9, 7y = 55, y = 7.857

Table (b) is also not the one.

(c) When x = 0, y = 2.7

Hence (c) is also not an option.

(d) When x = -18, y = 13

When x = -11, 7y = 63, y = 9

When x = -4, 7y = 35, y = 5

So the correct option is table (d).

Hence the correct option is table (d).

Learn more about Linear Equations here :

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As an estimation we are told 5 miles is 8km. Convert 44km to miles

Answers

Answer:

27.5 miles.

Step-by-step explanation:

44km ÷ 8km = 5.5

5.5 x 5 = 27.5

Answer:

27.5 miles

Step-by-step explanation:

i think that's the method I know and I believe that's the answer hope it helps you have a great day.

Find the distance between the two points. Round to the nearest tenth if necessary.

(–6, 12), (–3, –7)


A.
19.2


B.
16


C.
5.8


D.
21

Answers

Answer:

A. 19.2

Step-by-step explanation:

Use the distance formula to determine the distance between two points.

Exact Form:

√

370

Decimal Form:

19.23538406

…

Help pleaseeeee I will try and give brainliest

Answers

Answer:

the answers B c=35h+50

Step-by-step explanation:

Answer:

the answer is D. c= 85h

Step-by-step explanation:

i think this is the answer if it is correct plz give brainliest.

A $1,400 loan has a simple annual interest rate of 4%. How much simple
interest is paid on the loan for 1 year?
A
$56.00
B
$67.20
C $560.00
D $672.00

Answers

Answer:

the answer is c

Step-by-step explanation:

Pls help I’ll make u brainly

Answers

Answer:

3x-2 = 4 or x = ²/3

Step-by-step explanation:

we have full bars of X's so that represents 3 because we have 3 of them and we subtract the 2 (-1)'s we also have and since it is an equation it is supposed to equal something so in this case it equals 4 (1)'s .

If you solve the equation you get x =²/3

If you minus a positive number from a negative number is the diffirance a positive number, or a negative number? For example: 5 - ( -2 ) would this problem be positive negative. Also would you add or subtract because there is an negative number?

Answers

Answer:

positive + positive is negative

negative+ positive = negative ii think

Step-by-step explanation:

Alice has 8 acres of orchards.
Alice grows apple trees in 4 acres of the orchards
She grows pear trees in the rest.
How many acres of pear trees does Alice have?

Answers

Answer:

4

Step-by-step explanation:

8-4=4

difference in acres

Write the equation in standard form:
y + 5 = - (x + 3)

Answers

Answer:

x + y = -8

Step-by-step explanation:

find the HCF of the following numbers by prime factorization method 324 & 432​

Answers

Answer:

108

Step-by-step explanation:

324 = 2 * 2 * 3 * 3 * 3 * 3

432 = 2 * 2 * 2 * 2 * 3 * 3 * 3

The HCF is 2 * 2 * 3 * 3 * 3 = 108

find the missing side length

Answers

D.10 because if you divide 16/8 you get 2 and if you multiply 5 by 2 you get 10

Your friend thinks that the equation k-3.5=21, is he correct? explain.

Answers

Answer:

This could be correct in the case and only if k would equal 24.5 so only in that case

Step-by-step explanation:

Which pair of variables would most likely have approximately zero correlation

Answers

Answer:

I’m not sure but it’s b

Step-by-step explanation:

Are the triangles similar? Explain how you know.

Answers

Can’t see the numbers

Answer: Yes,these triangles are similar because they are both obtuse, scalene, and they both have three sides

How many times can you fit 8 hours and 24 hours?

Answers

Answer:

in what? if you meant 8 hours in 24 hours than 3 times

Step-by-step explanation:

Answer:

The answer is 3 times.

Step-by-step explanation:

[tex]since \: 8 \times 3 =24

then \: you \: can \: fit \: 8 \: hours \: 3 \: times \: in \: 24 \: hours.[/tex]

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