Mathematics High School

2x^2 + 9x + 4 = 0
PLEASE HELP! I WILL MARK AS BRAINLIEST

Answers

Answer 1

(2x+1)(x+4)

calculator

Answer 2

Answer:

Step-by-step explanation:

Multiply co efficient of the x^2 and the constant; which will be 8

What can you multiply together that will give you 8 and add that give the co efficient of x, 9

1*8 ✓

(2x^2 +8x) + (1x + 4) = 0

Factorise

2x(x+4) +1(x+4) = 0

2x+1= 0

x+4=0

x = -1/2 or -4

Related Questions

(pythagoras theorem | year 9)

Answers

Answer:

In this case, to prove what is required, we must use the Pythagorean theorem to find the diagonal of the square.

If the diagonal of the square is smaller than the diameter of the circle, then the square will fit perfectly in the circle without touching it.

Diagonal = Root ((7 ^ 2) + (7 ^ 2)) = 9.89 cm.

we observed that

9.89cm <11cm.

Therefore we show that:

the square will fit inside the circle without touching the edge of the circle

or

c^2 = a^2 + b^2 c^2 = 7^2 + 7^2 = 49 +49 c^2 = 98 c = sqrt 98 c = 9.8 cm c = diagonal of square (9.8 cm) and is less than the diameter of the circle (11 cm), so the square will fit inside the circle without touching the edge of the circle.

I hope this helps a little bit.

If a duck have speed of 6 m/s in 10 s. What is the duck's distance?

Answers

Answer:

60 meters

Step-by-step explanation:

hope this helps

Hannah is n years old.
Her aunt Emily is three times older than Hannah.
Emily is 48 years old.
(a) Write down an equation for this information.
(b) Solve your equation to find how old Hannah is.

Answers

Answer:

(this is easy)

n x 3 = 48

48/3 = n

n= 16

Hannah is 16 years old.

Step-by-step explanation:

PLease help me. YOu'll get 10 points.\

Answers

Answer:

Option D is your answer . If I'm right so,

Please mark me as brainliest. thanks!!!

help me solve this please

Answers

Answer:

2) 62°

Step-by-step explanation:

since there is a straight line (can also be called as a semi-circle), that gives us an idea that it is a 180 degree, because a whole circle is 360 degrees.

180-118 = 62°

Answer:

59° and 62°

Step-by-step explanation:

here's your solution

=> in the first picture , we know that sum of all angle on a straight line is 180°

=> so, angle ( ? + 121 ) = 180°

=> ? = 180° - 121°

=> ? = 59°

now , in second picture

=> ( x + 118° ) = 180°

=> x = 180° - 118°

=> x = 62°

hope it helps

help i’ll give brainliest

Answers

Answer:

The 3rd one

Step-by-step explanation:

It's a translation. The rest are reflections.

it’s the first one bc process of elimination

What is the volume of a right circular cone with a radius of 3 units and a height of 6 units?​ pleas help asap

Answers

Answer:

18 units

Step-by-step explanation:

Answer:

18 units

Step-by-step explanation:

Write an equation of a line in slope intercept form that passes through
(8,-1) and is perpendicular to y =-4x-7 *

Answers

Answer:

Step-by-step explanation:

Compare 6*10^5 and 3*10^4

Answers

Answer: 6*10^5 > 3*10^4

Step-by-step explanation:

6*10^5 = 600000

3*10^4 = 30000

d is all real number and teacher already say c was wrong so plz help

Answers

Answer:

I think ur teacher need to learn this problem before making the right choice

Step-by-step explanation:

Range: the possible y values
It cannot be all real numbers since there is a limit to what y can be.

Look at your graph:
Lowest value for y: -3
Highest value for y: 3
It would be between these values

Solution: B

Can someone help me pls

Answers

Answer:

Where's the answer?

Step-by-step explanation:

29,58,116,... find the 71st term

Answers

Answer:

sorry it doesn't make sense to me either but here is a link to another one of the 71st things hopefully it helps :)

Step-by-step explanation:

https://brainly.com/question/15779922

please help me asap.

Answers

Answer:

21

Step-by-step explanation:

Yes I am here to help

Solve the equation for a.

3a+13.61=−9.43

What is the value of a that correctly solves the equation?

Enter your answer as a number with two decimal places, like this: 4.25

Do not round your answer.

Answers

Answer:

a=-7.68

Step-by-step explanation:

3a+13.61=-9.43

               -13.61

_____________

               -23.04

3a=-23.04

-23.04/3= -7.68

find the area of the composite figure 12 yd height 10 yd base​

Answers

Answer:

120 yd^2

Step-by-step explanation:

1. 12x10= 120

2. 120 yd ^2

Ryan has a 28 foot board. He needs to cut it into 24 equal length parts. How long should each section of the board be?

Answers

Answer:

1.17 feet

Step-by-step explanation:

28 ÷ 24 = 1.16666666667

round that and you get 1.17

1.17 feet I would think is the answer

Help Me Plz 24=6a Plz

Answers

Answer:

a = 4

Step-by-step explanation:

just divide 24 by 6

a = 4

Hope this helped! Have a nice day! Plz mark as brainliest!!! :D

-XxDeathshotxX

Answer:

If your solving for A, A=4

Step-by-step explanation:

Divide 6 on both sides

2. Given that set M = {Even numbers between 20 and 35), find n(m)​

Answers

Step-by-step explanation:

Set M = {20,22,24,26,28,30,32,34}

n(M) = no. of elements in set M

i.e.

n(M) = 8

Answer:

7

Step-by-step explanation:

Even numbers between 20 and 35 are 22, 24, 26, 28, 30, 32, 34.

M = { 22, 24, 26, 28, 30, 32, 34}

There are 7 elements in the set M.

Thus, n(M) = 7

Please help!!!
I will mark you brainliest for the correct answer.
Please!!!!

Answers

Answer:

60°

Step-by-step explanation:

A straight line is 180°

<5 is 120°

180°-120°=60°

the answer is 60 degrees

what's the answer??
​

Answers

C. 116°

Step-by-step explanation:

X=Z add X & Z then subtract the answers from 180°

chose the correct equation type for each system WILL MARK BRAINLIEST!!!!!!!!!

Answers

graph? heidgdisdvhdhdhdvd

plz help me on this one its really hard :(

Answers

Answer:

It will be 63.9

Step-by-step explanation:

Trust me, I got it right

Answer:

63.6mm² (the last option)

Explanation:

the formula for calculating the area of a circle is πr², where r is the length of the radius.

in this case, we know that 9mm is the length of the diameter of the circle, so we can divide that by 2 to get 4.5mm for the length of the radius.

the question has instructed us to use 3.14 for π (pi), so we can substitute these values into the formula:

πr² = 3.14 × 4.5² = 63.585mm²

we can now round this to the nearest tenth to get 63.6mm², which would be the last option.

i hope this helps! :D

Lin and Kal's ages add up to 41 Lin is 5 years older than Kal. Use the equation from the to find their ages.​

Answers

Kal is 18 Lin is 23 divide then subtract

A tabletop in the shape of a trapezoid has an area of 5,550 square centimeters. Its longer base measures 115 centimeters, and the shorter base is 85 centimeters . What is the height?

Answers

Answer:

55.5 cm

Step-by-step explanation:

[tex]h=2*\frac{A}{a+b} \\\\h=2*\frac{5550}{115+85} \\\\h=2*\frac{5550}{200} \\\\h=2*\frac{111}{4} \\\\h=55.5[/tex]

Question 6
Which expression is equivalent to the expression shown?
2
7147²
712
17
716
77

Answers

Answer:

7^12

Step-by-step explanation:

if you are dividing the base numbers then you are subtracting the exponents

Identify the area of the composite shape.
71 cm squared
98 cm squared
34 cm squared
56 cm squared
please answer correctly and help me not being rude

Answers

Step-by-step explanation:

[tex]2(14 \times 2) + ((7 - 4) \times (14 - 9)) = \\ = 28 \times 2 + (3 \times 5) = \\ = 56 + 15 = \\ = 71[/tex]


I need help with this question can someone help me please?

Answers

Answer:

The correct answer is option D

Hope this helped you! If it did help please consider giving brainliest!

Please do not forget to give a thanks and leave a rating!

Answer:

the answer is D Have a great day

PLZ HELP I WILL GIVE BRAINIEST TO BEST ANSWERS!!!!

Answers

Answer:

Answers are all in pictures.

Divide top by bottom to see them in fractions

Okay brain block alert what is 3 1/3 divided by 4 3/4

Answers

Answer:

31/3÷43/4

=31×4/43×3

=124/129

Answer:

40/57

Step-by-step explanation:

keep change flip.

change the mixed fractions to improper by multiplying the integer by the denominator and then add the numerator.

should give you an answer of 10/3 and 19/4

which when put into the fraction-division rule equals 40/57

In a right triangle, the measures of the two smaller angles are (3x+6) and (2x - 1)º. Find the measure of the smallest
angle in the triangle.
A. 170
B. 33°
C. 570
D. 90°

Answers

Answer:

B is the answer

Step-by-step explanation:

Since there is already a 90 degree angle in the right triangle, the other two angles must add up to 90.

[tex]3x + 6 + 2x - 1 = 90[/tex]

[tex]5x + 5 = 90[/tex]

[tex]5x = 85[/tex]

[tex]x = 17[/tex]

Plug 17 into both to find the smaller angle

[tex]3(17) + 6 = 57[/tex]

[tex]2(17) - 1 = 33[/tex]

[tex]33 < 57[/tex]

So 33 is the answer or B

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