Mathematics High School

Solve a quadratic equation by factoring j2–30j=0

Answers

Answer 1

Answer:

j = 0  or j = 30

Step-by-step explanation:

j² - 30j = 0

Factorise j out of both terms on the left side.

j (j-30) = 0

Apply zero product rule.

j = 0  or j-30 = 0

Find the value of j.

j = 0  or j = 30

Related Questions

x = (blank) degrees and adding letters so i can ask the question

Answers

x = 47 degrees

It’s part of a supplementary angle. 180-133 = 47.

Answer:

x = 47°

Step-by-step explanation:

Since CPD is a straight line, then

133 and x are adjacent angles and supplementary, sum to 180° , then

x + 133° = 180° ( subtract 133° from both sides )

x = 47°

If the sum of 37 and 12 x is 286, what is the value of x?

Answers

Answer:

x = 20.75

Step-by-step explanation:

37 + 12x = 286    <-- Subtract 37

12x = 249     <-- Divide by 12

x = 20.75

how do i put it on the line?pls help meee

Answers

The pic is blank on my end repost it.

Question 1 (1 point)
What value of n makes the equation
0.2(n + 4) = 4.7n - 2.8 true?
A n = 0.8
B n = 1.25
Cn=-0.48
Dn=0.96
А
B
C
D

Answers

Answer:

a     n=0.8

Step-by-step explanation:

what is the slope of the equation y=2/3x-4

Answers

Answer:

2/3

Step-by-step explanation:

y=mx+b

y=2/3x-4

m=slope

b=y intercept

14, 28, 56, 112
 what is the common ratio

Answers

Answer:

2

Step-by-step explanation:

You can find the common ratio by dividing each number in the sequence from the number before it so,

28/14= 2

56/28= 2

112/56= 2

Therefore, the common ratio is 2

The expression on the left side of an equation is shown below.

3 x + 9 = box

If the equation has no solution, which expression can be written in the box on the other side of the equation?

Answers

I got no clue how to do this bruvvvvvvvvv

0.0000056 rewritten as a single digit
times a power of ten becomes:

Answers

Answer:

5.6× 10^ -6

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

Stephen ate 1/3 of a bag of jelly beans and Jon ate 1/4 of the bag. What fraction of the jelly beans were left?

Answers

Answer:

5/12

Step-by-step explanation:

1/3+1/4

=7/12

12/12-7/12

=5/12

5/12 is the answer hope you have a great day

A rectangle is 60 cm long and 20 cm wide. Find, to the nearest tenth of a degree, the acute angle formed at the intersection of the diagonals.

Answers

Answer:

36.9°

Step-by-step explanation:

As shown in the diagram attached,

θ is the acute angle formed at the intersection of the diagonals of the rectangle.

From the diagram,

tan(θ/2) = 10/30

tan(θ/2) = 1/3

θ/2 = tan⁻¹(1/3)

θ/2 = 18.43

Therefore,

θ = 18.43×2

θ = 36.87

θ = 36.9°

Hence the acute angle formed is 36.9°

Help, and can you show your work?

Answers

Step-by-step explanation:

answer A is correct

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

Answer:

c

Step-by-step explanation:

[tex]sin = \frac{opposite}{hypotenuse}[/tex]

it wants us to find sin a

the opposite of a is 24 and the hypotenuse is 26

so sin A = 24/26

[tex]cos = \frac{adjacent}{hypotenuse}[/tex]

it wants us to find cos a

the adjacent of a is 10 and the hypotenuse is 26

so cos A = 10/26

have a great day :D

¿Cuál es el valor absoluto de 9?

Answers

Por lo que, el valor absoluto de -9 es 9. El valor absoluto de 9 es el número de unidades que está 9 del cero. Nueve está a nueve unidades de cero.

Find the lateral surface area of the triangular prism.
A) 360 cm2
B) 380 cm2
C) 400 cm2
D) 420 cm2

Answers

Answer:

is it A?

Step-by-step explanation:

I think it's A because no one has answered!

Hiiiooos! Can someone please help me with this!!!❤️❤️❤️❤️:)

Answers

Answer:

a

Step-by-step explanation:

hopes this helps

Answer: My best guess is 10 (sqrt of 2)

Step-by-step explanation:

Mrs. Harbrook can choose from two rectangular pool sizes. The pool manufacturer provides her with the area of the pool, but she needs to find the dimensions in order to determine if the pool will fit in her yard.




If the area of the pool is x2−17x+72, what are possible expressions to represent the length L and the width W ?

Answers

Answer:8 or 9 ft

Step-by-step explanation:

Given

The area of the pool is  [tex]A=x^2-17x+72[/tex]

The area is in the form of a quadratic equation

So, the roots of the equation will give the length and width of the pool

[tex]\Rightarrow x^2-17x+72=0\\\Rightarrow x^2-8x-9x+72=0\\\Rightarrow x(x-8)-9(x-8)=\\\Rightarrow (x-8)(x-9)=0\\\Rightarrow x=8\ or\ 9[/tex]

Therefore length and width can either be [tex]\text{8 or 9 ft}[/tex].

[tex]\Rightarrow L=8\ ft,W=9\ ft\ \text{or}\ L=9\ ft,W=8\ ft[/tex]


Divide both the numerator and the denominator of 25/30 by 5 to write an equivalent fraction,

Answers

Answer: 5/6  

Step-by-step explanation:

25/30(5/5)

5/6(1/1)

(5/1)(6/1)

=5/6

if you are smart I will give brainliest

2 + 2enty = ???

Answers

Answer:

2enty 2

Step-by-step explanation:

I think it’s 40, have a great day!!!

PLEASE HELP ILL GIVE BRAINLY

Answers

Answer:

40.2

Step-by-step explanation:

Please help meh with this question if you get it correct I'll give tah brinleist!! Tyy!! °^°

Answers

Answer:

area

Step-by-step explanation:

Answer:

area area area area rea (minimum character limit)

72 in.= ______ yd.
yd.=yards
in.=inches
HOW MANY YARDS ARE IN 72 INCHES? HOW DO I SHOW MY WORK FOR THAT???!!!!!
correct=brainliest

Answers

Answer:

72 inches equals 2 yards to get the answer you divide 72 by 36 which equals 2 .

Step-by-step explanation:

Please helpppppp!!!!!!!!

Answers

Answer:

a, cube

Step-by-step explanation:

Help Me please i need some help :)

Answers

A=45
Explanation:
A= a+b/2*h

please help it’s urgent

Answers

Answer:

1) 12/18

2) 15/25

3) 32/40

4) 6/14

5)  8/15

6) 16/24

7. 12/27

Step-by-step explanation:

What is the mean of the following data set 5,9,5,2,,10

Answers

Answer:

6.2

Step-by-step explanation:

Answer:

6.2

Step-by-step explanation:

mean is equal to all the numbers in the data set added together divided by the number of numbers in the data set

Common factors of 27 and 54

Answers

Answer:

4

Step-by-step explanation:

4

Answer:

Step-by-step explanation:

Factors for 27: 1, 3, 9, and 27 Factors for 54: 1, 2, 3, 6, 9, 18, 27, and 54

so common factors are 1, 3,9 and 27

8. A rectangular prism measures 5 cm by
9.5 cm by 17.2 cm. What is the volume of the
prism?
10.
pyra
руга
the P
A. 31.7 cm3
B. 272.3cm
C. 296.9 cm3
D. 817 cm3
A. 4
B. 5
C. 1
D. 1

Answers

your answer is 817 cm3.
Anwser would be 185 or 183 due to the ryethem

TIMED TEST. HELP

The standard form of an absolute value function is fx) = a |x-h| + k. Which of the following represents the vertex?
O (-k, h)
0 (-h, k)
O (k, h)
O (h, k)

Answers

I believe it is B, k is always y, meaning -h would have to be x
The answer Is B!! Hope this helps

Someone plz help but instead of sending a link because I can’t open then can you please just tell me, thanks!

Answers

Answer:

Options A and C and F are correct.

Step-by-step explanation:

5(2+4)

5*2+5*4

5*6

Have a great day! :)

and can I please have brainliest?

Thanks!

Answer: Your answers would be 5(2+4), 5x2+5x4, and 5x6

Hope this helps you!

In parallelogram ABCD, if ED = 7x - 13 and BD = 16x - 38, find BD.

Answers

Answer:

58

Step-by-step explanation:

The length of BD is 58  units.

What are properties of parallelogram?

The two diagonals cut across one another. The parallelogram is divided into two congruent triangles by each diagonal. A parallelogram's total square sum and total square sum of its diagonals are equivalent. Additionally known as the parallelogram law.

Given:

ED = 7x - 13 and BD = 16x - 38

So, the Diagonals of parallelogram bisect each other

BD = ED+ EB

16x - 38 = 2 ED   { ED= EB}

16x - 38 = 2 (7x- 13)

16x - 38 = 14x - 26

2x = 12

x= 6

So, length of BD = 16(6) - 38 = 96- 38 = 58 units

Learn more about properties of parallelogram here:

https://brainly.com/question/26651476

#SPJ2

I give up math is hard

Answers

Answer:

3, 4, 6 and 8 are true.

Step-by-step explanation:

Check out the rules in below picture.

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