Mathematics High School

Select all of the equations where x = 3 is a solution.
3x = 1
3x = 33
7x – 2 = 19
2x = 5
5x = 15
5x + 6 = 21

Answers

Answer 1

Answer:

7x-2=19

5x=15

5x+6=21

................

Answer 2

Step-by-step explanation:

Here x = 3

3x = 1 (False)

3* 3 ≠1

3x = 33 (False)

3 *3 ≠ 33

7x - 2 =19 (True)

7 *3 - 2 = 19

21 - 2 = 19

19 = 19

2x = 5 (False)

2 *3 ≠ 5

5x = 15 (True)

5 * 3 = 15

15 = 15

5x + 6 = 21 (True)

5 * 3 + 6 = 21

15 + 6 = 21

21 = 21

Hope it will help :)❤

Related Questions

What is an
equation of the line that passes through the points (-3,-2) and (3,6)?

Answers

Answer:

y = 4/3x + 2

Step-by-step explanation:

y2 - y1/ x2 - x1

6 - (-2)/ 3 - (-3)

= 8 / 6

= 4/3

y = 4/3x + b

6 = 4/3(3) + b

6 = 4 + b

2 = b

How many 1/5s are in 4

Answers

Answer:

20

Step-by-step explanation:

You have to divide to find the answer so

4/1 * 5/1

Which will get you to 20.

there is 20 in 4 hope you find your anwser

Help needed with some geometry

Answers

Answer:

hope this helps you. look it once.

That's Question 8 attached

#9

Angles that are distinct

<A and <B<C and <D

Angles less than 180°

<B and <D

2 different measures

I need help to get the answer,

Answers

Answer:

4.25 hours

Step-by-step explanation:

A fully charged phone would be at 100%, so we'll set y equal to 100 and solve for x:

100=20x+15

85=20x

4.25=x

So Sammi's phone will be fully charged in 4.25 hours.

Answer:

4.25 hours

Step-by-step explanation:

"Fully charged" means the percentage should be 100%.

Substitute 100 for y then solve for x.

[tex]100=20x+15\\85=20x\\x=\frac{85}{20}\\x=4.25 \text{ hours}[/tex]

Use the following function rule to find f(3).

f(x) =
8
x

+ 9

f(3) =

Answers

Answer:

33

Step-by-step explanation:

f(3) = 8(3) + 9 = 24 + 9 = 33

Answer:

33 is the answer.

Step-by-step explanation:

# CarryOnLearning

help please!! i’m confused

Answers

Answer:

3. B. AD = AO

Step-by-step explanation:

Hope it helps

#CarryOnLearning

answer this question for brainilest and 30 points

Answers

The answer is V is less than 200 cubic inches

Translate the sentence into an inequality. Ten times the sum of a number and 21 is at most 16. Use the variable y for the unknown number.​

Answers

Answer:

10y+ 21 ≥ 16

Step-by-step explanation:

Given that x = 5.4 m and 0 = 26°, work out BC rounded to 3 SF.
B
O
ou
A
x
С
The diagram is not drawn accurately.
W
BC=
m​

Answers

Answer:

BC ≈ 4.85 m

Step-by-step explanation:

Using the cosine ratio in the right triangle

cos26° = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{BC}{AC}[/tex] = [tex]\frac{BC}{5.4}[/tex] ( cross- multiply )

5.4 × cos26° = BC , then

BC ≈ 4.85 m ( to 3 s f )

plz help have posted this question 3times and no one has helped me​

Answers

Answer:

25

Step-by-step explanation:

Find the total by summing the heights of the bars, that is

total = 2 + 5 + 6 + 8 + 3 + 1 = 25

Find the volume of the composite figure.
16 ft
21 ft
13 ft
18 ft
the volume is
cubed ft.

Answers

the volume is 21 cubed ft.

Find the circumference of a circle that has a diameter of 10in

Answers

Answer:

62.83

Step-by-step explanation:

10 times 3.14 times 2

PLEASE ANSWER CORRECTLY I WILL GIVE U M

Answers

Answer:

the answer should be 360° n

ima use this so i can ask something lol ..

Evaluate:

12×2.4×2.4×7=

Answers

Answer:

483.84

Step-by-step explanation:

Answer:

483.84

Step-by-step explanation:

How do I do this I need help please?

Answers

Answer:

34.8 to 1 dp

Step-by-step explanation:

18/2 = 9

Area of rectangle 18 X 9 = 162 cm^2

diameter of each circle 9

radius = 4.5

Area of a circle = πr^2

π X 4.5^2 = 63.6172512

63.6172512 X 2 (there are 2 circles) = 127.234502

162 - 127.234502 = 34.7654975

34.8 to 1dp

Hiii, I would love it if you can help me with these! I tried my best but it's really hard and I don't understand.

Answers

Answer:

First one i think is C and the second one is A it was easy

Step-by-step explanation:

find the distance of line segment AB between the points at (8,0) and (5,9)

Answers

Answer:

Approximately 3.605 units

Step-by-step explanation:

AB= B -A = [tex]\left[\begin{array}{ccc}5\\9\end{array}\right][/tex] - [tex]\left[\begin{array}{ccc}8\\0\end{array}\right][/tex] = [tex]\left[\begin{array}{ccc}-3\\9\end{array}\right][/tex]

|AB| = √x²+y² = √(-3)²+2² = √9+4 =√13 = 3.605 units

Plsss help ASAP


200 extra point and brainliest

Answers

Answer:

A, B, D

Step-by-step explanation:

Answer:

A, B, D, E

Step-by-step explanation:

1. 100 = 100%, so seeing that there are 55 boys and 45 girls, we can go ahead and turn those into percentages, making this answer correct.

2. Once again, 100 = 100%, so 17 = 17%

3. "10/55 of those" isn't implying this is the boys only, but rather everyone, so this statement is not correct.

4. 10/35 of the students who chose math are girls. We can see that on the graph.

5. 8 + 8 = 16. Those are both the same number and half and half of the boys and girls...

Hope this helped!

PLEASE HELP! I AM BEHIND ON SCHOOL WORK AND I NEED THIS! PLEASE SHOW WORK!

Answers

if ur question is to find the missing side length, it would be 7cm because the 8.2cm are right across from each other and are the same value. so the missing side across from 7cm would be 7cm too

HELP ME PLEASE!!!
Find the area of the triangle shown below.

Answers

You use the formula A= 1/2(B)(H)
So the area would be: (1/2)(6)(6)
= 18

5. The circle graph below shows 500 tickets
sold at a school concert.
17%
Adults
24%
Students
Children Under 12
Seniors
55%
How many tickets were sold to students?
A 55 tickets
B 120 tickets
C 225 tickets
D 275 tickets

Answers

D. Because 500 x 0.55= 275

Write the inequality that represents the number line

Answers

Answer:

C)

Step-by-step explanation:

You, your cousin, and a friend each take the same number of free throws at the basketball hoop. Who made the most free throws?

Player Shots Made
You 17/20
Cousin 0.8
Friend 87.5%

Answers

Answer:

the friend made more free throws

Step-by-step explanation:

17/20 = 85%

0.8 = 80

87.5% = 87.5

the friend has a bigger percentage. meaning she mad more free throws

PLEASE ANswer iLL TRY AND MARK BRAINLIEST

Answers

the best option is option number c because the line both marks on the 2 in the negative and positive side

In the current year Aveeno reported net income of $50,400which was a 12% increase over prior year net income Compute prior year net income

Answers

Answer:

$45000

Step-by-step explanation:

Given data

Net income =$50,400

Let the prior year income be x

12/100*x +x= 50400

0.12x+x= 50400

1.12x= 50400

x= 50400/1.12

x= $45000

Hence the prior year income is $45000

This dot plot shows the number of runs scored by the yellow jackets in their last 12 games. How could you describe the graft?

Answers

Answer:

Symmetric

Step-by-step explanation:

The dot plot provided is almost symmetric :

Obtaining the median value :

2, 3, 5, 5, 6, 6, 6, 6, 7, 7, 7, 9

1/2 ( n + 1)

n = 12

1/2 (13) = 6.5

(6 + 6) /2

12 /2

= 6

Counting the number of points to the left and to the right of the median vlaue in the plot, we'll see that the difference in values aren't entirely different, and as such folding along the median value won't leave too much on one side than the other. Hence, the plot is symmetric.

Write an equation to match each graph

Answers

Answer:

y=lxl

Step-by-step explanation:

Answer:

y=|x|

Step-by-step explanation:

The first graph is V shaped graph centered at origin, (0,0) and the graph is not shifted or translated. So, the equation of first graph is,

I rly need help with #2-4 and #8-9 PLZZ

Answers

Answer:

2. sin=12\15 cos=9/15 tg=12/9

3. sin=3/v13 cos=2/v13 tg=3/2

4. sin=v15/4 cos=7/4 tg=v15/7

Please help.
Is algebra.
PLEASE HELP NO LINKS OR FILES.
I don't want links.

Answers

the answer is c




hope that helps :)))

What is the slope of the line that passes through the points: (5, -3) and
(-1,6)

Answers

Answer:

-1/2

Step-by-step explanation:

https://www.calculator.net/slope-calculator.html

That website has the best explanation ^^^^^

Answer:

[tex]-\frac{3}{2}[/tex]

Step-by-step explanation:

[tex]m=\frac{\text{rise}}{\text{run}}=\frac{y_2-y_1}{x_2-x_1}[/tex]

We are given the points (5, -3) (-1, 6).

[tex]\frac{6-(-3)}{-1-5}=\frac{9}{-6} =-\frac{9}{6}=\boxed{-\frac{3}{2}}[/tex]

Hope this helps you!

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