I need help 8th grade math​

I Need Help 8th Grade Math

Answers

Answer 1

Answer:

error made in step 2, should be 3x² + 15x - 18 = 0

3(x+6)(x-1) = 0

x = -6 and x = 1

Step-by-step explanation:


Related Questions

Can somebody plz help answer these correclty (only if done this before) like show the answer /how I’m suppose to write it thx :3

WILL MARK BRAINLIEST WHOEVER ANSWERS THESE FIRST :DDD!!!

Answers

Answer:

1) 3x = 39  ; x = 39/3 = 13

2) x + 7 = 15 ; x = 15-7 = 8

3) 6x = 18  ; x = 18/6 = 3

4) x-4 = 11  ; x = 11 + 4 = 15

5) 1/7 x = 3   ;  x = 3 *7 = 21

6) 13+x = 21  ;  x = 21 - 13 = 8

I hope im right!!!

PLEASE HELP IM STRUGGLING IN MATH!! THANK YOU!!!!❤️

Answers

Answer:

$5193.77

Step-by-step explanation:

You want to figure out what x is.

Since x is the number of years after 1996, you can do 2005 - 1996 = 9 years.

Then, plug x = 9 into the equation:

y = 11,000(0.92)^9

Plug this into a calculator and you get: y = $5193.77

Find the angle of x (view picture)

Answers

Answer:

i dont understand this qustion\

Step-by-step explanation:

Answer:

60

The 2 angles in the triangle add up to 120, there are 180 degrees so the last one is 60. 60 is equal to x because of co-interior angles

can soemone hlep me pls i give brainlist and points

Answers

Answer:

532+50pi

or exact: 689.08

Step-by-step explanation:

Over 5 days, Rashid jogged 6.5 miles, 5 miles, 2 miles, 2 miles, and 4.5 miles. Find the mean distance that Rashid jogged

Answers

Answer:

4miles

Step-by-step explanation:

mean = (6.5+5+2+2+4.5)/5 = 20/5 = 4

Which of the following statements provides the correct freezing and boiling points of water on the Celsius and Fahrenheit temperature scales

Answers

B provides the correct freezing and boiling points of water

please help, i’ll give brainliest!!!

Answers

I’m pretty sure its b
Don’t give me brain- whatever it is it’s most likely wrong

HELP PLEASEE Consider the line and triangles in the diagram, which of the following statements explains the relationship between the slope of the line and features of the triangles? (brainliest) (help!)

Answers

Answer: b

Step-by-step explanation:

add them then divide

Which expressions are equivalent to 5^12 ⋅ 5^8
Choose 2 answers:

A
25^20
B
(25^5)^4
C
(5^3 ⋅ 5^2)^4
D
(5^5)^4

Answers

Answer:

It’s C and D

Step-by-step explanation:

How many one-third
cup servings are in 6
cups of chocolate
chips?

Answers

Answer:

18

Step-by-step explanation:

for every one cup there are 3 one third servings so all you have to do is simply multiply 3 by 6.

Answer:

i think 18 because if it was 2 cups it will be 6 , cheack if 18 in ur choices

Step-by-step explanation:

Help ASAP for 20 points I will mark brainless

Answers

Answer:

Step-by-step explanation:

-x + 10 = 40

-x = 40 - 10

-x = 30

x = - 30

-3x + 4 = 10

-3x = 10 - 4

-3x = 6

x = 6/-3

x = - 2

Answer:

x=-30 for A

Step-by-step explanation

subtract both sides by 10 which means 40-10=30

then add the negative sign

fee clo 3. DeShawn's Bikes rents bikes for $11 plus $5 per hour. Maria paid $51 to rent a bike. For how many hours did she rent the bike? (Please all I need is the equation!!)​

Answers

Answer:

She rented the bike for 8 hours.

Step-by-step explanation:

51-11=40

40/5=8

How many feet did Marcus travel? ( 1 mile=5280 feet)

Answers

Answer:

5280

Step-by-step explanation:

Graph the function.
F(x)=3/8(x-1)(x-9)

Answers

Graphing functions is the process of drawing a curve on the reference system that represents a function, and its calculation can be defined as follows:

Graph function:

Every point on a curve (graph) that represents a function fulfills a function formula.The function is a domain-range connection whereby each domain value corresponds to only one range value. This criterion is violated by non-functional relations. These have at least a single domain value that matches two or more ranges.

[tex]\to F(x)=\frac{3}{8} (x-1)(x-9)[/tex]

solving the above given function:

[tex]\to F(x)=\frac{3}{8} (x^2 -9x-x+9)\\\\\to F(x)=\frac{3}{8} (x^2 -10x+9)\\\\\to F(x)=\frac{3}{8} \times x^2 - \frac{3}{8} \times 10x+ \frac{3}{8} \times 9\\\\\to F(x)=\frac{3}{8} \times x^2 - \frac{3}{4} \times 5x+ \frac{3}{8} \times 9\\\\[/tex]

Please find the graph function in the attached file.

Find out more about the Graph function here:

brainly.com/question/9834848

What are the angles measures of triangle ABC?​

Answers

Answer:

∠A = 90°

∠B = 60°

∠C = 30°

PLEASE HRLP EAsY 10 pOiNtS

Answers

it would be y = -4x-5

HELP ME JUST ANSWER PLZ IM SUFFERING I WILL GIVE YOU BRAINLYEST OR WHATEVER

Answers

Answer:

534.07in squared is what I got for the surface area

Step-by-step explanation:

I WILL NAME YOU BRAINLIEST AND GIVE YOU ALL MY POINTS IF YOU SOLVE THIS!!!!! In the diagram, each shape has a value and the sums of the shapes in each of the first three rows is given. Find the sum of the shapes in the fourth row.

Answers

Answer:

...

Step-by-step explanation:

...

Answer:

Can you put up the diagram so I can solve it?

Step-by-step explanation:

What is the value of x?

Answers

Answer:

square root of 72

or 3 to the square root of 8

Step-by-step explanation:

HELP MEEEEEEEEEEEEE!!!!!!!!!!!!!!!!

Answers

Answer:

linear or Quadratic

i hope it works

answer: quadratic

you know it’s a quadratic when the second difference is the same number
so

the first difference is:
0 to -3 is -3
-3 to -4 is -1
-4 to -3 is +1
-3 to 0 is + 3

the second difference is:
-3 to -1 is +2
-1 to 1 is +2
1 to 3 is +2

since the second difference is always +2
the function is QUADRATIC

Sheet 3
Functions - Ordered Pairs
A) State whether each set of ordered pairs represents a function.
1) {(0, 2), (15,-2), (3,7), (2,5),(-2,-4), (1,7), (-11,7)}
2) {(-11, -2), (20, 15),(-12,0), (19,-13)}
I
3) ((16,-4), (9,-1), (3,-2), (8, -1), (13,0), (-17, 16)}
4) {(-8, -13), (-7,3), (5, -9), (-7, 18), (4,3), (0, -10)}

Answers

Answer:

1) Yes

2) Yes

3) Yes

4) No

Step-by-step explanation:

A function has to have points that do not share a domain (x-coordinate). All of the options meet this requirement other then option 4.

Hope it helps!

HELP PLEASE CHECK MY ANSWER!!!

Answers

Answer:

its almost correct but its just a little bit off

Step-by-step explanation:

1. on the left its on the two bring it closer to the 4 than the 2 so its gonna be right before the four ill insert a picture so u can see as well.

2. on the left side its going to be right before -2.

3. on the bottom its going to be moved down to -18 and a little bit out going to the right.

the picture is right there hope it helped

Pease answer number 9 for me.

Answers

Answer:

a. 33 degrees

b. 90 degrees

c. 57 degrees

Plss heeeeeeeeeeeeeeeelp

Answers

Answer:

1. Yes

2. No

2. Yes

4. Yes

5. Yes

Step-by-step explanation:

The angles in the first pair are congruent and 40° each (XYZ and XYW are complementary)

Segment FG is 4 cm while segment DE is 6 cm so they are not congruent

As shown on the figure both segment OR and segment OS is 2 in. long

Angle 2 and angle 4 are congruent

Angle ROQ and angle ROP are congruent because all angles shown on the figure has a measure of 90°

What is the answer to this question it is urgent

Answers

the answer is D scnagntwhwth

Keelin’s hourly rate went from $9.50 per hour to $10.26 per hour. What is the percent increase?

Answers

Answer:

8%

Step-by-step explanation:

PLEASE HELP!!!!
Find the length of the missing side. The triangle is not drawn to scale.
100
10
48

Answers

Answer:

10

Step-by-step explanation:

pythagorean theorem

take the sum of the square of each leg and set it equal to the square of the hypotenuse

8² + 6² = x²

64 + 36 = x²

x² = 100

x = [tex]\sqrt{100}[/tex] or 10

Answer:

B.10 units

Step-by-step explanation:

Since this is a right triangle, we can use the Pythagorean theorem which states that a^2+b^2=c^2

Plug in what we know....

8^2+6^2=c^2

64+36=c^2

c=sqrt(100)

c=10 units or B

find the value of A
75°,110°,90°

Answers

Answer:

I think it is 90° because on a line it is 180 and and both add up to 360°

A is 85
Hope it helps


1. The temperature in Hawaii on Thursday was 85°F. The temperature in Colorado on Thursday was
5°F. Which expression(s) represent this situation using the absolute value of the difference

Answers

Answer: See explanation

Step-by-step explanation:

From the question, we are informed that the temperature in Hawaii on Thursday was 85°F while thee temperature in Colorado on Thursday was 5°F.

The expression(s) that represent this situation using the absolute value of the difference will be:

= 85°F - 5°F

= 80°F

Write in complete sentences telling a similarity and a difference between opposite numbers and absolute value

Answers

Answer: looks at the picture

Step-by-step explanation: hope this help :)

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