Solve the following quadratic equation by factorising: 15x^2 + 2x - 8 = 0​

Answers

Answer 1
x=-4/5 and x=2/3 that should be the right answer

Related Questions

If ΔABC ≅ ΔEDF where the coordinates of A(−1, 1), B(2, 4), and C(3, 1), what is the measure of EF?

3
3.2
4
4.6

Answers

Answer:

4 is the correct answer.

Step-by-step explanation:

If you're taking FLVS math then this is the right answer, I got it correct on my test.

The required measure of EF is 4. Option c is correct.

ΔABC ≅ ΔEDF
A(−1, 1), B(2, 4), and C(3, 1).

What are congruent geometry?

In congruent geometry, the shapes that are so identical. Can be coincide to themselves.

Here,
ΔABC ≅ ΔEDF
SO, AC = EF
EF = [tex]\sqrt{(3+1)^2+(1-1)^2 }[/tex]
EF = 4

Thus, the required measure of EF is 4.

Learn more about congruent geometry here. https://brainly.com/question/12413243

#SPJ2


Linear combination of matrices .

Answers

Multiplying a matrix by a scalar is equivalent to multiplying each entry in the matrix by that scalar:

[tex]A=\begin{bmatrix}0&-3\\-5&5\end{bmatrix}\implies3A=\begin{bmatrix}0&-9\\-15&15\end{bmatrix}[/tex]

[tex]B=\begin{bmatrix}-2&-6\\2&5\end{bmatrix}\implies-6B=\begin{bmatrix}12&36\\-12&-30\end{bmatrix}[/tex]

Now combine them:

[tex]3A-6B=3A+(-6B)=\begin{bmatrix}0+12&-9+36\\-15+(-12)&15+(-30)\end{bmatrix}=\begin{bmatrix}12&27\\-27&-15\end{bmatrix}[/tex]

find the measure of angle J .will mark brainiest​

Answers

Answer:

<J=51°

Step-by-step explanation:

3x-2+4x-9+3x-9=180

10x-20=180

10x=200

x=20

<J=3x-9=3(20)-9=60-9=51°

Answer: Angle J = 51°

Step-by-step explanation: All angles add up to 180° in a triangle, so add every angle and set it equal to 180°.

(3x - 2) + (3x - 9) + (4x - 9) = 180

Add like terms:

10x - 20 = 180

Add 20 to both sides:

10x = 200

Divide both sides by 10:

x = 20

Now, plug x into angle J:

3(20) - 9

60 - 9

51

Angle J = 51°

Hope this helps!

Suppose you invested 2000 in a compound interest account earning 10% per month. How much would you have in your account at the end of 5 months?​

Answers

Answer:

she ate my. s aa a awwosewrtfgfdswertyu

Step-by-step explanation:

wwwwojwojwowj

Answer:

$3,221.02

Step-by-step explanation:

Month 1: $2000 x 1.10 = $2,200

Month 2 = $2,200 x 1.10 = $2,420

Month 3 = $2,420 x 1.10 = $2,662

Month 4 = $2,662 x 1.10 = $2,928.2

Month 5 = $2,928.2 x 1.10 = $3,221.02

1) _______ is caused by the weight of air above an area. *
atmospheric pressure
high pressure
low pressure
2) _________ creates less pressure on the barometer *
high pressure
low pressure
3) _______ creates greater pressure on the barometer. *
high pressure
low pressure
4) Read the following statement and determine if it describes high pressure or low pressure. As air cools, it becomes more dense and sinks toward the Earth's surface spinning clockwise. *
high pressure
low pressure

Answers

1: atmospheric
2:low pressure
3:high pressure

Evaluate : (r - 3)³ + r² if r = -3 and s = -4. Show all the steps of working for this question.
I have a math test please give me the right answer!!

Answers

Answer:

-207

Step-by-step explanation:

Using r= -3, we can substitute r in the whole equation as (-3) which gives you: ((-3)-3)^3 +(-3)^2. Now you can calculate these values in a step by step manner. (-6)^3 +9 then to -216 +9 which brings you to the answer of -207.

Answer:

225

Step-by-step explanation:

(r - 3)³ + r² if r = -3 and s = -4

(-3 - 3)^3 + (-3)^2

(-6)^3 + (9)

(-6 x -6 x -6) + 9

-216 + 9

-207

In the diagram, c | d . Identify three numbered angles that have a measure of 124°.
2.
34
5
124°
d
7
8
<2. < 7 and <1
<2. <4 and <1
<3. <7, and <4
<2. <3 and <7

Answers

Answer:

Option (4)

Step-by-step explanation:

From the figure attached,

Lines 'c' and 'd' are the parallel lines a transversal line is intersecting these lines.

m∠2 = 124° [Corresponding angles]

m∠7 = 124° [Vertically opposite angles]

m∠2 = m∠3 = 124° [Vertically opposite angles]

Therefore, angles ∠2, ∠7 and ∠3 measure 124°.

Option (4) will be the answer.

Students make 82.5 ounces of liquid soap for a craft fair. They put the soap in 5.5​-ounce bottles and sell each bottle for ​$4.50. How much do the students earn if they sell all the bottles of liquid​ soap?

Answers

Answer:

$63

Step-by-step explanation:

Answer:

they made 67.5$

Step-by-step explanation:

82.5÷5.5 is 15 15×4.50 would be 67.5

HELP!!!!!
answer asap! this is due in two hours!!

Answers

Answer:

it is 56

Step-by-step explanation:

there are 4 sides and they are all 10 and if you add them they are 40 and if you do the bottom it is 16 and 40 + 16 is 56  hope it helps

What 2 numbers have a difference of 8

Answers

Step-by-step explanation:

10-2=8 has the difference of 8

The difference of two numbers is obtained using the subtraction operation ; Hence, two numbers whose difference gives a value of 8 are 16 and 8.

There are many possible values where, the value of the two numbers will give a value of 8.

They include;

10 - 2 = 816 - 8 = 812 - 4 = 813 - 5 = 89 - 1 = 8

Therefore, two numbers whose difference gives a value of 8 are 16 and 8.

Learn more : https://brainly.com/question/18106342


what is the time 5 ​

Answers

5 ? What this does not make sense

Julie has a bag of flour that holds 20 cups of flour. She needs 4 cups for each loaf of bread.
How many loaves of bread can she make? Explain.

Answers

5 because 20 divided 4 = 5.
she can make 5 breads because if they need 4 cups of flour to make bread and there’s only 20 cups you simply divide 20/5 and it give 4 so four loaf breads

6.25w= -106.25 equals what

plz hurry!

Answers

Answer: w = -17

Plzz mark brainliest:)

W= -17 hope this helped have a great day let me know if you need help on anything else and please mark me brainliest!

Solve for the missing value x 2 : 26 = 4 : x

Answers

Answer:

x=52

Step-by-step explanation:

2:26

2*2:26*2

4:52

tim has two spinners

Answers

“Tim has two spinners”
Tim has two spinners.

Could it be zero? 4(x+2)=10
2. 12-8x=3(x+4)

Answers

Answer:

1) x=0.5

2 x=0

Step-by-step explanation:

Question No. 1

4(x+2)=10

4x+8=10

4x=2

x=0.5

Question No. 2

12-8x=3(x+4)

12-8x=3x+12

8x-3x=12-12

5x=0

x=0

Chris wants to make ½ a batch of chocolate chip muffins. He has a recipe that calls for ¾ cup chocolate chips. If he only wants to make half a batch, then how many cups of chocolate chips should he put in?

Answers

Answer:

ge needs to use 6 tablespoon of chocolate chips

Can someone please help, ty!!
(Will mark brainliest)

Answers

Answer:

4 hours

Step-by-step explanation:

50+5x=15x

50=20x

x=4

I need help, quick....

Answers

Answer:

A & B

Step-by-step explanation:

Solve for x. 25 + 15x = 0

Answers

Answer:

x=−

3

5

=−1.667

Step-by-step explanation:

Answer:

[tex]\sf x=-\frac{5}{3}[/tex]

Step-by-step explanation:

[tex]\sf 25 + 15x = 0[/tex]

[tex]\sf 25+15x-25=0-25[/tex]

[tex]\sf 15x=-25[/tex]

[tex]\sf \frac{15x}{15}=\frac{-25}{15}[/tex]

[tex]\sf x=-\frac{5}{3}[/tex]

Can someone please help, ty!!
(Will mark brainliest)

Answers

it should be two hours man

Find the best buy for
a)
shampoo if 8 ounces cost $0.99 and 12 ounces cost $1.47.
b) cereal if 31 ounces cost $1.50 and 16 ounces cost $0.77.
c) soda if 3 cans cost $1.77 and 5 cans cost $1.79.

PLEASE HELPPP

Answers

Answer:

A.  12 oz. for $1.47

B. 16 oz for $0.77

C.  5 cans for 1.79

Step-by-step explanation:

A. Divide them both, cost by quantity.

 0.99/8=0.123

  1.47/12=0.1225

The second option is better since its 0.005 less than the first option.

B. Again, divide both options.

   0.77/16=0.04125

    1.50/31=0.04838

     Second option because it is 0.00713 cents cheaper.

C.  1.77/3=0.59

     1.79/5= 0.36

       Second option is .23 cents cheaper than the first option.

   

which of the following is equal to (1/a+a)^2 - (1/a-a)^2 ?
A) 0
B) 4
C) 1/a^2 - a^2
D) 2/a^2 - 2a^2
E) 1/a^2 - 4-a^2

Answers

Answer:

B

Step-by-step explanation:

Answer:

I think its b

Step-by-step explanation:

I tried doing the work and got 4 so I hope its b

Find the slope (3, 7) (-2, 7)

Answers

Answer:

(-5,0)

Step-by-step explanation:

The X coordinates go down by five = -5

The Y coordinates don't change = 0

I'm pretty sure this is right :)

Hope it helped!

Answer:

Answer Below

Step-by-step explanation:

Hope this helps! <3

If you walk 100 m forward And 35 m backwards towards your starting point would what is the distance and displacement explain your answer

Answers

Answer:

imater?

Step-by-step explanation:

Which statement correctly describes the relationship between the graph of f(x) and the graph of g(x)=f(x)−4?



The graph of g(x) is the graph of​​ ​f(x)​ translated 4 units down.

The graph of g(x) is the graph of ​f(x)​ translated 4 units right.

The graph of g(x) is the graph of ​​f(x)​ translated 4 units up.

The graph of g(x) is the graph of f(x) translated 4 units left.

Answers

Answer:

The graph of g(x) is the graph of​​ ​f(x)​ translated 4 units down.

Explanation:

Given the function f(x) and g(x) = f(x)-4

This means that the function g(x) is 4 less than the function g(x) i.e the function g(x) is reduced by 4. Since the negative values on a graph are located from the origin down the negative y axis and towards the negative x axis, we can conclude that the graph g(x) translated 4 units down. of f(x). This is translated along the y axis because the function g(x) serves as the output for all values on input variable x.

The g(x) can be written as a function of y i.e we can rewrite it as y = f(x)-4.

Hence the correct option is The graph of g(x) is the graph of​​ ​f(x)​ translated 4 units down.

How do you write 1.65x10^8: 2x10^3 in scientific notation?

Answers

I'm guessing you're talking about the ratio,

(1.65 x 10⁸) / (2 x 10³)

You can cancel the lowest power of 10:

(1.65 x 10⁸) / (2 x 10³) = (1.65 x 10⁵) / 2

Divide 1.65 in half to get 0.825. So we have

(1.65 x 10⁸) / (2 x 10³) = 0.825 x 10⁵

Move the decimal point to the right, which involves multiplying by a factor of 10 which is taken from 10⁵, so we end up with

(1.65 x 10⁸) / (2 x 10³) = 8.25 x 10⁴

Solve the question on the interval [0, 2π)
sin^2 θ - cos^2 θ = -3 sin θ - 2

Answers

Answer:

[tex]\frac{7\pi }{6} ; \ \frac{3\pi }{2} ; \ \frac{11\pi }{6}.[/tex]

Step-by-step explanation:

if 1=sin²Q+cos²Q, then cos²Q=1-sin²Q, then

2sin²Q+3sinQ+1=0;

[tex]\left[\begin{array}{ccc}sinQ=-1\\sinQ=-0.5\end{array} \ => \ \left[\begin{array}{ccc}Q=3\pi/2+2\pi *n\\Q=(-1)^n*\frac{7\pi }{6}+\pi n \end{array}[/tex]

on the interval Q=3π/2 (from the 1st equation) and Q=7π/6; 11π/6 (from the 2d equation).

Go
A triangular parking lot has two sides that are of the same length and the third side is 7 m longer. If the perimeter is 70 m, find the lengths of the sides.

Answers

Answer:

two of the sides are 21 m long and one of the sides is 28 m long

A phone company charges a base fee of $12 per month plus an additional charge per minute. The monthly phone cost LaTeX: CC can be represented by this equation: LaTeX: C=12+a\cdot mC = 12 + a ⋅ m , where LaTeX: aa is the additional charge per minute, and LaTeX: mm is the number of minutes used. Which equation can be used to find the number of minutes a customer used if we know LaTeX: CC and LaTeX: aa?

Answers

Answer: M=(c-12)-a

Step-by-step explanation:

this is because your trying to find m and 12a doesn't represent that.

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