This is 8th grade math.

This Is 8th Grade Math.

Answers

Answer 1
x = 1 , y = - 2


Hope this helped
Answer 2

Answer:

x = 1 , y = - 2

Step-by-step explanation:


Related Questions

Can somebody solve this real fast

Answers

i’m pretty sure the answer to that is b
I think the answer is 38, it can’t be bigger than 90°

3 (n - 4) = 36
please show work if you can

Answers

Answer:

n=16

Step-by-step explanation:

3 (n-4) = 36

3n -12=36

add twelve to both sides. because -12 + 12 is 0. and once you are at zero, you can cancel it out.

3n=48

divide by 3 on both sides

n=16

Factor Completely 14bx^2-7x^3-4b+2x

Answers

Answer:

=14bx2−7x3−4b+2x

Step-by-step explanation:

The picture is the answer

8n+16.2=1.6



Plzzz

Help ,

Answers

Answer:

8n+16.2=1.6

n=-1.825

Step-by-step explanation: Subtract 16.2 from both sides 8n+16.2-16.2=1.6-16.2

Simplify 8n=-14.6/8

n=-1.825

Answer:

-1.825

Step-by-step explanation:

8n  +  16.2  =  1.6

(step1)      

8n  +  16.2  =  1.6

        - 16.2     -16.2

                       

8n      =      -14.6

(step2)

8n =  -14.6

----    ------

 8      8

(step3)

-1.825

1. subtract 16.2 from both sides, you have to get rid of the number that is being add/subtracted to get the n and result alone

2. divide by the number next to the variable since you have to get the variable alone in order to find out what it is. you divide because you have to do the opposite of what the variable IS doing.

3. get the result lol

please help due at 11 !! thank you so much

Answers

Answer:

13cm

Step-by-step explanation:

The pythagorean theorem states that, for right triangles, [tex]a^{2} +b^{2} =c^{2}[/tex]. Using this equation, we can solve for the hypotenuse.

a = 12cm

b = 5cm

c = hypotenuse

[tex]12^{2} +5^{2} =c^{2}[/tex]

[tex]144+25=c^{2}[/tex]

[tex]\sqrt{169} =c[/tex]

13 = c

Answer:

13

Step-by-step explanation:

a^2+b^2=c^2

12^2+5^2=c^2

144+25=c^2

169

square root of 169=13

13=c

solve for r, A=P(1+mr)

Answers

r = A 1
— - —
Pm m



:)

the ratio 20 minuets to 1 hour can be written in the form 1:n
find the value of n

Answers

i think n = 3 because 1hr = 60 mins and 60 divided by 20 = 3

the answer is 1:3 since there are 60 minutes in on hour you divide 60 by 20 and get 3 so you have 3 sets of twenty minutes to one hour. so n is 3

Solve the equations 4× + 4 = 20. Write the problem on the sketch pad then solve the problem algebraically. I need shown work.

Answers

Answer:

x = 4

Step-by-step explanation:

I don't know what you mean by sketch pad but here is the working out

4x + 4 = 20

-4            -4

4x = 16

÷4           ÷4

x = 4

Hope this helps :)

i need help with both 9 and 10

Answers

I'll answer problem 9 to get you started

Answer: Choice (2) 3x-1 = 2x+3

===============================================

Explanation:

We will plug x = 7 into each equation or inequality given to us. Then we determine if we get a true statement or not.

----------------

Let's start with choice (1)

x + 3 > 6

7 + 3 > 6 .... x is replaced with 7

10 > 6

Since 10 is larger than 6, this makes the last inequality true. Therefore, the first inequality is true when x = 7. So we can rule out choice (1) since we are looking for a false statement.

----------------

Move onto choice (2)

3x-1 = 2x+3

3*7-1 = 2*7+3 ... replace every x with 7

21-1 = 14+3

20 = 17

This is false since we don't get the same number on each side. Therefore, choice (2) is the final answer.

----------------

Since we found the answer, we can stop here. But let's keep going to check the others.

choice (3)

2(x+1) = x+9

2*(7+1) = 7+9 ... plug in x = 7

2*(8) = 16

16 = 16

We get the same thing on both sides, so the equation is true. We can rule out choice (3).

-----------------

Now onto choice (4)

[tex]-2x + 10 \le 0\\\\-2*7 + 10 \le 0\\\\-14 + 10 \le 0\\\\-4 \le 0\\\\[/tex]

This is true since -4 is to the left of 0 on the number line, which makes -4 smaller than 0. We can rule out choice (4).

What type of slope does the following equation have y = -6?

A. Positive
B. Negative
C. Zero
D. Undefined

Answers

Answer:

C. Zero

Step-by-step explanation:

This is because if you graph it, it is in a straight line horizontally, it doesn't go up or down.

What is the product: (х + 5)(х + 12) =

Aх2 + 12х + 52

Bх2 + 17

Cх2 - 60

Dx^2 + 17x + 60

E60x72

Answers

Answer:

The product is [tex]x^{2}+17x+ 60[/tex]

Solve (-5/2)x ‐ 5 = -55

Answers

Answer: 5

Step-by-step explanation: add 5 on each side and you get -50 then divide -5/2 with -50 and get 5

find the intercepts of given line 6x+5y=30​

Answers

I can’t really be much of a help right now but if you download the photo math app you’d I’m sure you’d be able to find both the y and x intercepts. Good luck

Answer:

x-intercept

Put y=0

x=5

y-intercept

putx=0

y=6

Step-by-step explanation:

Please help me I'm dying D: I'll mark brainliest :>

Answers

Answer:

6 2/3

Paul made $205

2/3+3 3/4 = 4 5/12

240 students in sixth grade

15 oz for $1.29

Step-by-step explanation:

5/(3/4) = 5/1x4/3 = 20/3 = 6 2/3

proof:

6 2/3 x 3/4 = 20/3 x 3/4 =60/12 = 5

please help me asap, i wi give brainliest!! <3​

Answers

Answer:

the answer would be 132

Step-by-step explanation:

180-48=132

can u please help me? i’ll give brainliest

Answers

it’s B because you put 12 in each of the equations
The answers are
A
B
Hope this helps

What is the domain of the function graphed?

Answers

Answer:

C lets look at were this line starts which is in between 7 and 8 right in the middle making it 7.5 it is negative because the point is on the negative side of our graph. Where the line ends in on positive 2 on the x-axis. -Your friend, Bill Cipher

Step-by-step explanation:

The average distance from the Sun to Mars is 22,793, 910,000,000 centimeters.

The conversion factors between centimeters and four other units of measure are shown below.

9.46. 10^17 cm = 1 light-year
1.50.10^13 cm = 1 astronomical
1 . 10^5 cm = 1 kilometer
1. 10^2 = 1 meter

For the distance to be expressed as x units of measure, where 1 < x < 10, which unit of measure must be used?

A Light-years
B) Astronomical units
C)Kilometers
D) Meters​

Answers

D would be the correct answer

Given f (x) = 9x– 15, find f (3).

Answers

X=2
F(3)=9x-15+15
+15
18/9 x=2

Answer:

f(3)=12 should be the answer

Step-by-step explanation:

replace x with 3 and solve

class 7th maths chapter 13 Exponents of Power This is Test question​

Answers

Answer:

-11/7

Step-by-step explanation:

For the function {(0,1), (1,-3), (2,-4), (-4,1)}, write the domain and range.Immersive Reader
(1.5 Points)
A )D: {1, -3, -4,}-R: {0, 1, 2, -4}
B) D:{0, 1, 2, 3, 4}- R:{1, -3, -4}
C) D:{0, 1, 2, -4}- R:{1, -3, -4}
D) None of the above

Answers

Answer:

C. D:{0, 1, 2, -4}- R:{1, -3, -4}

Step-by-step explanation:

HELP ME PLEASE I DONT UNDERSTAND

Answers

(Ignore Lol) hdhdjdhdh D. 27/4! (:
The answer is a. You plug in the values for the variables and solve. I hope this helps.

Solve for x.
(13x + 12)

Answers

Answer:

=13x+12

Step-by-step explanation:

A major storm has winds speeds that are at least 110 miles per hour.Write and solve an inequality that describes how much greater these wind speeds are than the slowest hurricane

Answers

Answer:

x ≥ 36 miles per hour

Step-by-step explanation:

The speed of a major storm is at least 110 miles per hour while the speed of the slowest hurricane is at least 74 miles per hour.

Let x represent how much greater these wind speeds are than the slowest hurricane. Therefore:

x ≥ 110 miles per hour - 74 miles per hour

x ≥ 36 miles per hour

This means that the winds speed must be 36 miles per hour greater than the slowest hurricane.

7. Find the slope. Make sure to reduce.

Answers

Answer:

The slope is zero

Step-by-step explanation:

.........

Answer: Zero

Why? When the line is flat right horizontal with not increase or decrease it is considered a zero slope. (NOT UNDEFINED, it is defined, it’s defined as zero)

Simplify 8x + 4xy - 2y + 5xy - 3x + 7xy

Answers

1 6 x y - 2 y - 3 x

The height of a mountain is 26,400 feet. What is the height of the mountain in miles?

Answers

Step-by-step explanation:

Height of Mountain in feet = 26400 feet

Height of Mountain in Miles = 5 miles

Hope it will help :)

Answer:

5 miles

follow me

Look at triangles TUV and T'U'V'.Which best explains the transformation of triangle TUV to form triangle T'U'V'?​

Answers

Answer:

The answer is D or Triangle TUV is dilated by a scale factor of 9 and then translated 2 units right and 1 unit down to form triangle T"U"V" . I just took the test and I hope I helped : )

Step-by-step explanation:

A fence is being built in the shape of a right triangle. Each leg is 30 feet
long. What is the measure of the longest side of the triangle?

Answers

Answer:

42.42641

Step-by-step explanation:

PLS HELP !!

A total of 78 seats for a local concert are sold, producing a total revenue of $483.
If seats cost either $2.50 or $10.50, how many of the $2.50 seats were sold?
seats.


Part B
How many of the $10.50 seats were sold?
seats

Answers

Answer:

add them then multiply

Step-by-step explanation:

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