Mathematics High School

x2+9x+20 plz help with it​

Answers

Answer 1

Answer:

11x + 20

Step-by-step explanation:

x2 + 9x + 20

2x + 9x + 20

11x + 20

Hope this helped!

Answer 2

Answer:

(x + 5)(x + 4)

Step-by-step explanation:

Assuming you require the expression to be factored

Given

x² + 9x + 20

Consider the factors of the constant term (+ 20) which sum to give the coefficient of the x- term (+ 9)

The factors are + 5 and + 4, since

5 × 4 = + 20 and 5 + 4 = + 9 , thus

x² + 9x + 20 = (x + 5)(x + 4) ← in factored form

Related Questions

Find the 7th term of the arithmetic sequence given a12=29 and
a16=53
a7=___

Answers

Answer:

Thus: a7=-1

Step-by-step explanation:

Arithmetic Sequences

The arithmetic sequences are identified because each term is obtained by adding or subtracting a fixed number to the previous term.

The equation to calculate the nth term of an arithmetic sequence is:

[tex]a_n=a_1+(n-1)r[/tex]

We know: a12=29, a16=53, thus

[tex]a_1+(12-1)r=29[/tex]

[tex]a_1+(16-1)r=53[/tex]

Simplifying:

[tex]a_1+11r=29[/tex]

[tex]a_1+15r=53[/tex]

Subtracting both equations:

[tex]4r=53-29=24[/tex]

Solving:

[tex]r=24/4[/tex]

r=6

The 7th term can be found as 5 terms before the 12nd:

[tex]a_7=a_{12}-5r[/tex]

[tex]a_7=29-5*6=29-30=-1[/tex]

Thus: a7=-1

rolex worked 40 hours last week. he had $74 deducted from his earnings for taxes. if he had $286 left after deduction, how much does rolex earn per hour?

Answers

He earned $9 per hour

If -11 + N = -11, then N is the

Answers

Answer:

additive identity

Step-by-step explanation:

-11+N=-11     N=0

ADD 11 TO BOTH SIDES

-11+N+11   =-11 +11

(-11 AND 11 CANCEL EACH OTHER OUT ) THEREFORE

N=0

*Additive Identity Property states The sum of any number and 0 is that number.  

Here goes another question

Answers

Answer:

y = x - 8

Step-by-step explanation:

In order to solve this, we need to use point-slope form.:

y - y1 = m(x - x1)

Substitute the numbers into the equation:

y - (-8) = 1(x - 0)

y + 8 = x

y = x - 8

the answer would be y=x-8 ...!

Multiply (12-5i)(-3+4i)

Answers

Answer:

−16 + 63i

Step-by-step explanation:

Multiply using the FOIL method, then combine the real and imaginary parts of the expression.

Hope this helps! :D

Somebody help please?

Answers

Answer:

x=13

Step-by-step explanation:

vertical opposite angles are equal.

Answer:

13

Step-by-step explanation:

THERE THE SAME

NEED ANSWER ASAP!
How much time will Alex need to walk to his school, which is 2 1 4 miles away from his house, if he would walk with the speed of 3 mph?
I WILL MARK BRANIEST

Answers

Answer:

t=0.57h

Step-by-step explanation:

Match the following to the correct solution

Answers

Answer:

a/c/z

Step-by-step explanation:

The table (below) shows the amount of fuel left in your RV while driving. What type of function can you use to model the data? Estimate the amount of fuel left in your tank after driving for 90 minutes.

Im a lil confused someone help explain the problem please :)

Answers

Answer:

the answer is 4

Step-by-step explanation:

hope this helps

Cristian made an ankle bracelet using 6 red beads, 10 green beads, 4 purple beads, and 5 yellow beads. He wants to make a necklace that has the same ratio of color beads as the ankle bracelet. If the necklace has 15 yellow beads, how many purple beads will it have?

Answers

Answer:

20 is the answer

Step-by-step explanation:

MARK BRANIEST


Encuentra el Minimo común múltiplo (m.c.m.) de los sieguentes numeros 12y 15​

Answers

Answer:

is this question in Spanish ?

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me speak english

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Which values of a, b, and c correctly complete the division? One-fourth divided by StartFraction 5 Over 6 EndFraction = StartFraction 1 Over a EndFraction times StartFraction b Over c EndFraction a = 4, b = 5, c = 6 a = 1, b = 6, c = 5 a = 1, b = 5, c = 6 a = 4, b = 6, c = 5

Answers

Answer:

a = 4, b = 6 and c = 5

Step-by-step explanation:

It is given that,

[tex]\dfrac{\dfrac{1}{4}}{\dfrac{5}{6}}=\dfrac{1}{a}\times \dfrac{b}{c}[/tex]

We know that,

[tex]\dfrac{\dfrac{a}{b}}{\dfrac{c}{d}}=\dfrac{a}{b}\times \dfrac{d}{c}[/tex]

So,

[tex]\dfrac{1}{4}\times \dfrac{6}{5}=\dfrac{1}{a}\times \dfrac{b}{c}[/tex]

If we compare both sides of the equation we get,

a = 4, b = 6 and c = 5

Hence, these are the values of a,b and c.

Answer:

The simple and easy answer is D

Step-by-step explanation:

A rectangle is drawn on a coordinate grid. The equation for one side of the rectangle is 2x – 5y = 9. Which could be the equation of another side of the rectangle?
y = 5x + 9
y = 2x – 9
y = -2/5x + 9
y = 2/5x - 9

Answers

Answer:

D

Step-by-step explanation:

it just is

Sturdy the diagram
Value of

Answers

Step-by-step explanation:

5x + 2 = 50 - x (vertically opp angle)

5x + x = 50 - 2

6x = 48

x = 8

if you wanna check it,

5x + 2 = 50 - x

5(8) + 2 = 50 - 8

40 + 2 = 42

42 = 42

I NEED HELP ON THIS PLEASE!!

Below are the test scores for Ms. Brown's 1st and 2nd period math classes. Analyze the data and choose EACH correct statement:

1st period (Class A): 10, 15, 20, 25, 30, 35, 40

2nd period (Class B): 7, 12, 17, 25, 33, 38, 43

The standard deviation for Class A is 10

The standard deviation for Class B is 12.615

These are the options:

- The mean (average) score for each class is the SAME.

-The mean (average) score for each class is DIFFERENT.

- The variance for Class A is 125.

- The variance for Class B is 159.14.

- Class A has a greater spread.

- Class B has a greater spread.

- Based on the data, a score of 8 is more likely in Class B than Class A.

- If graphed, Class B would look more like the red graph below and Class A would look more like the blue one.

Answers

Answer:

hope that helps

Step-by-step explanation:

- If graphed, Class B would look more like the red graph below and Class A would look more like the blue one.

- Based on the data, a score of 8 is more likely in Class B than Class A.

- Class A has a greater spread.

Find the slope and the y-intercept of the line.
y = 5/4x+3 ​

Answers

The slope is 5/4 and the y intercept is 0,3

Any help with this plz!!! <33

Answers

Answer:

A = 37°B = 63°C = 16°

Step-by-step explanation:

The tangent function relates an angle to the measures of its adjacent and opposite sides. The inverse tangent (arctan) function can be used to find the angle from its tangent value.

  Tan = Opposite/Adjacent

   angle = arctan(opposite/adjacent)

A = arctan(3/4) ≈ 37°

B = arctan(2/1) ≈ 63°

C = arctan(2/7) ≈ 16°

BRAINLIEST ANSWER! I NEED HELP ASAP!!

Answers

Answer:

The answer is in the picture. I believe it is correct :)

Answer:

yep i checked it too its right

2. Let z represent the unknown number. Write expressions for:
a. A third of the unknown number plus three
b. Four times the unknown number less twice the number
C. The sum of the unknown number and its square
d. The fraction obtained when double the unknown number is divided by the sum of the unknown number and four​

Answers

Answer:

a. z+3

b. 2z - 4z

c. z + z^2

d. 2z/(z+4)

Hope it helped.

the sum of 4 consecutive integers is -62 write an equation to determine the smallest of the integers ​

Answers

Answer:

x + (x+1) + (x+2) + (x+3) = -62

x = -17

Step-by-step explanation:

x = smallest

x + (x+1) + (x+2) + (x+3) = -62

4x +6 = -62

4x = -68

x = -17

What fraction of an hour is 8 minutes?
Give your answer in its simplest form.

Answers

Answer:

2/15

Step-by-step explanaion

4/30 simplified is 2/15

Two lengths are shown below: A. 24 inches B. 2 feet. Explain why length A is
equivalent to length B. Use your knowledge of converting inches to feet in
your answer.


I need help plzzz

Answers

Answer:

ok cuz evrey 12 inch = 1 feet thank youu

1 foot is equal to 12 inches meaning that 24 inches divided by 2 is 12 inches. Since each foot is 12 inches and we got 24/2= 12 that means that both 2 feet and 24 inches are equivalent, idk if I did good but my bad if you don’t understand

Estimate the product. Then find the exact product.

7.9(10.1)
estimated product = 80, exact product = 7.97
estimated product = 80, exact product = 79.79
estimated product = 80, exact product = 797
estimated product = 80, exact product = 7,979

Answers

Answer:

79.79

Step-by-step explanation:

What do the zero exponent and negative exponents properties mean

Answers

In other words, if you raise a nonzero number to the power of
0
,
the result is
1.

Mathematicians debate the value of
0
0
.
Some say it's
1
,
and some say it's undefined.

Here are some examples of the Zero Power Rule. Notice it works for numbers and for variables.

1
0
=
1
(
153
+
x
)
0
=
1
,
if
x
≠
−
153
(
x
+
y
+
z
)
0
=
1
,
if
x
+
y
+
z
≠
0

So when
a
≠
0
,
why does
a
0
=
1
?
Why does the Zero Power Rule hold? Here's one way to think about it:
a
0
=
a
n
−
n
Then, by the quotient rule for exponents, we can write this as:
a
n
−
n
=
a
n
a
n

Then this becomes a problem about dividing fractions. Since the numerator and the denominator are both the same this becomes
1
.
a
n
a
n
=
1


A negative exponent means how many times to divided by the number

helpp ! look at the pic help me asap

Answers

y12 i guess idrk sorryyyy maybe look on google BRAINLY LET ME POST

Thanks in advance!
filler filler filler filler filler

Answers

Answer:

C

Step-by-step explanation:

The base number is 2, and it's being multiplied 7 times, so 7 is the exponent

Hope this helps!

five million, forty-three thousand, two hundred ninety-nine in numbers ​

Answers

Answer:

5,043,299

Step-by-step explanation:

five million = 5,000,000

forty-three thousand= 43,000

two hunded = 200

ninety-nine = 99

Answer:

5,043,299

Step-by-step explanation:

i thinks its that

Write 0.00000029 in scientific notation.

Answers

[tex]29 \times {10}^{ - 8} = 2.9 \times {10}^{ - 7} [/tex]

And we're done.

Thanks for watching buddy good luck.

♥️♥️♥️♥️♥️

The 7th grade class experienced a 15% decrease in enrollment.Last year,the 7th grade class had 280 students. How many how many students are enrolled in the 7th grade this year?

Answers

Answer: 238

Step-by-step explanation: 10% of 280 is 28. 1% of 280 is 2.8. Multiply 2.8 times 5 and you get 14. Add 10% and 5% (28+14) and you get 15% which is 42. Subtract 42 from 280 and you get 238.

Answer:

232 students are enrolled this year.

Step-by-step explanation:

Since 15% of the enrollment of the previous year is gone, you must take 15% of the total number of students and subtract that from the total number of students.

[tex]280*0.15=42[/tex]

This tells us that the 15% decrease means there are 42 fewer students enrolled this year. Now you would just subtract 42 from 280.

280 - 42 = 232

c) 2x(3x + 4)
expand the following:

Answers

Answer:

6x^+8x

Step-by-step explanation:

Its a monomial by a binomial, so we need to multiply the 2x with each term in the bracket, and put the sign in the brackets.

final answer: 6x^+8x

Answer:

[tex]6x^{2} +8x[/tex]

Step-by-step explanation:

Multiply 2x into the equation to get [tex]6x^{2} +8x[/tex].

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