Mathematics High School

Solve the following equation using the quadratic formula.
2x² + 5x – 42 = 0
Select all solutions that apply.
x = 1.5
x= -4
OX= 3.5
x = -6

Answers

Answer 1
X is Equal to 3.5 :))

Related Questions

Perform the following multiplication

a) 9xy ( x²y – xy²)

b) 7 p?q? (9 pq - 9 p²q²)​

Answers

Answer:

a: (9x^3y^2)-(9x^2y^3)

Step-by-step explanation:

Find the value of f(-8).

Answers

9514 1404 393

Answer:

  8

Step-by-step explanation:

F(-8) is found by locating x = -8 on the x-axis, then determining the y-coordinate the graph has at that point.

  f(-8) = 8

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Henry deposits $7500 in an account earning 2.75% interest compounded monthly. What is the balance in his account after 4 years?

A.$27,579.67
B.$20,160
C.$10,420.49
D.$8371.03

Answers

Answer:

Answer is D

Step-by-step explanation:

Tom drives 200 miles in 4 hours.
He drives the first 32 miles at an average speed of 64 mph
Work out his average speed for the rest of the journey, in mph.
Please help??

Answers

His average speed for the rest of the journey was of 48mph.

if tom is driving 200 miles in 4 hours... and drives the first 32 miles in half an hour... his speed for the rest of the trip would most likely be 48 mph because 3.5 hours are left and 168 miles are left and when you divide that it comes out to 48.

3. Is this data linear or nonlinear? Explain how you know.*

Answers

Answer:

Non-linear

Step-by-step explanation:

Not consistently increasing

find the mean of the given data. 147 141 120 124 128

Answers

147 + 141 + 120 + 124 + 128=660
660/4 =132
hope that helps xo
(147+141+120+124+128) / 5 = 132 :^)

I divided by 5 because there are 5 items in the set of data.

Hope this helped!!

(50Pts) When using the vertical method to multiply polynomials, your like terms must be lined up in ____________.

descending order
ascending order
columns
rows

Answers

I think you line them up in columns

Answer:

C. Columns

Step-by-step explanation:

It's correct, I took the test and got it right.

If a = 12 in and b = 25 in, what is the area of the pencil? A. 372 in2 B. 169 in2 C. 322 in2 D. 444 in2

Answers

Answer:

1169 in^2 Approx

Step-by-step explanation:

Given data

We know that the shape of the pencil is cylindrical

Hence the dimension is

Diameter= 12in

Radius= 12/2= 6in

Height= 25in

The surface area of a cylinder is given as

T.S.A.=2πrh+2πr^2

Substitute

T.S.A.=2*3.142*6*25+2*3.142*6^2

T.S.A.=942.6+226.224

T.S.A=1168.824

Hence the area is 1169 in^2 Approx

Which expression is equivalent to 46 - 2x)?

A) 24-8x

B) 24-6x

C) 10-8x

D) 10-6x

Answers

Answer:

24-8x

Step-by-step explanation:

Answer:jghgghfgfhgfhghfj

Step-by-step explanation:

Milan raises dairy cow he has 165cows.Each cow produced2 gallons of milk every day.How many gallons did the cows produce per day,show solution using grid method

Answers

Answer:

Cows produce milk per day = 330 gallons

Step-by-step explanation:

Given - Milan raises dairy cow he has 165 cows. Each cow produced

             2 gallons of milk every day.

To find - How many gallons did the cows produce per day ?

              Show solution using grid method.

Proof -

Given that,

Total cows Milan raises = 165

Now,

Given,

1 cow produce milk = 2 gallon

⇒ 165 cows produce milk = 165 × 2 gallons

Now,

By using grid method , we have

165 × 2

X                       100                        60                         5

2                        200                       120                        10

⇒ 165 × 2 = 200 + 120 + 10 = 330 gallons

∴ we get

Cows produce milk per day = 330 gallons

5+5 also i like people

Answers

Answer:

5+5=10 :D

Step-by-step explanation:

Answer:

huh

Step-by-step explanation:

I WILL GIVE BRAINLIEST!!

Answers

Answer:

[tex]\text{D. The terms may be combined.}[/tex]

Step-by-step explanation:

Recall that [tex]\sqrt{a\cdot b}=\sqrt{a}\cdot\sqrt{b}[/tex]. Using this, we can simplify and combine the two terms:

[tex]6\sqrt{32}-12\sqrt{72},\\=6\cdot \sqrt{4}\cdot \sqrt{8}-12\cdot \sqrt{9}\cdot \sqrt{8},\\=6\cdot 2\cdot \sqrt{8}-12\cdot 3\cdot \sqrt{8},\\=12\sqrt{8}-36\sqrt{8},\\=-24\sqrt{8}=-24\cdot\sqrt{4}\cdot\sqrt{2}=\boxed{-48\sqrt{2}}[/tex]. Therefore, the terms may be combined.

A refrigerator has a marked price of $5000. Mr. Jones bought it on hire purchase for $7500. What is the extra cost Mr. Jones paid as a percentage of the cash price? *

A) 66.6%
B) 33.3%
C) 50%
D) 75%​

Answers

The answer is C. 50% because 50% of 5,000 is 2,500 and 2,500+5,000= 7,500
50% because the 50% of 5000 is 2500 and 5000+2500=7500

PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ HELP
Translate the sentence into an inequality.

Twice the difference of a number and 5 is at most 23.

Use the variable x for the unknown number.

Answers

Answer:

[tex] 2(x - 5)\leqslant \\23[/tex]

Step-by-step explanation:

or

[tex]2x - 10 \leqslant 23[/tex]

Erik used the Factor Theorem to find the remainder of 2x3-4x2-28x+6 divided by x+3. If he calculated the remainder to be 0, what does that tell him?

Answers

Step-by-step explanation:

x + 3 = 0

x = - 3

f(x) = 2x³ - 4x² - 28x + 6

f(- 3) = 2(- 3)³ - 4(- 3)² - 28 x (- 3) + 6

= 2 x (- 27) - (4 x 9) + 84 + 6

= - 54 - 36 + 90

= - 90 + 90

= 0

Therefore,

x + 3 is factor of 2x³ - 4x² - 28x + 6

1) d=rt
d = distance traveled by a moving object
r = rate of speed
time the object travels
t = time the object travels

Your first stop is in Bend, which is 122 miles away. How
fast do you need to travel in order to make it there in 3
hours?

Answers

Answer:

41 mph

Step-by-step explanation:

122 = 3r

r = 40 2/3 mph

It’s due tonight help please

Answers

Answer:

:)

Step-by-step explanation:

A) 4,4

B) 2,2

C) 4,3

Hope this helps

Can anyone help me choose the correct answer?!

Answers

Answer:

f(x)=9x-7

when x=-1

f(-1)=9×-1-7=-9-7=-16

when x=0

f(0)=9×0-7=-7

other are similar to this

help with this question please

Answers

Number of chores is independent, the other is dependent
Independent variable (often denoted by x ) whose variation does not depend on that of another.
Dependent variable (often denoted by y ) whose value depends on that of another.

Independent- c (number of chores)
Dependent- d (number of dollars)

Depending on how many chores you complete will determine how much money you will earn.

Calculate the PERIODIC interest rate for a $10,000 loan
compounded semi-annually at a rate of 14%.

Answers

That would be 90% of the compound semi

PLZ PLZ PLZ PLZ PLZ PLZ HELP I NEED HELP PLZZZZZZZZZ NO ONE HAS HELPED ME FOR AN HOUR 25 POINTS
The expression 2(4+v)+9v is simplified in several steps below.

For each step, choose the reason that best justifies it.

8+2v+9v

commutative property of addition

associative property of addition

distributive property of addition

combining like terms

8+11v

commutative property of addition

associative property of addition

distributive property of addition

combining like terms

11v+8

commutative property of addition

associative property of addition

distributive property of addition

combining like terms

Answers

Answer:

C, D, A

Step-by-step explanation:

Distributive property

Combining like terms

Communitive property

work out: 0.03 x 0.6

Answers

0.03 x 0.6

= (3 x 6) / 1000

= 18 / 1000

0.018

Plz I need help ASAP

Answers

Answer:

22

Step-by-step explanation:

5.50p=5.50x4=22

I hope this is the answer you're looking for! :)

I just edited it.

two times the sum of a number and 18 is at least -21

Answers

Answer:

2x + 18 ≥ 21

x ≥ 2/3

Step-by-step explanation:

Let sum be X

2 times the sum means 2x

the sum of a number and 18 means x + 18

at least -21 means ≥ 21

put them together, and you get, 2x + 18 ≥ 21

If solving for x,

2x + 18 ≥ 21

2x ≥ 3

x ≥ 2/3

5x + 13 + (2y-7)i = -2 + i please please help

Answers

hope this helps !!!!

The original perimeter of a rectangle is 30cm, if we enlarge it by a scale factor of 4
what is the new perimeter?
120
1920
480

Answers

The original perimeter of a rectangle is 30cm,if we enlarged it by scale factor of 4

What is the new perimeter ?
The new perimeter is 120

Help me please!!! Whats the length for w?

Answers

Answer:

(The second option) sin40° = w / 28

Step-by-step explanation:

sin40° = opposite / hypotenuse

sin40° = w / 28

Son=40 hope this helps

Identify the vertex for the graph of y = -2x2 - 12x +1. (1 point)
O (-3, 19)
0 (-3,55)
(3, -53)
(3, -47)

Answers

Answer:

(-3, 19)

Step-by-step explanation:

A rectangle has sides measuring (2x + 5) units and (3x + 12) units.
Part A: What is the expression that represents the area of the rectangle? Show your work to receive full credit. (6 points)
Part B: What is the degree of your answer from part A? What is the classification of your answer obtained in Part A ( monomial, binomial, trinomial, polynomial)? (4 points)

Answers

Answer:

Step-by-step explanation:

Area = (2x+5)( 3x+12) square units

= 6x² + 39x + 60 square units

Trinomial

What is a No solution? What is a infinite solution?

Answers

No is a solid answer and infinite solution well that just means anything

Answer:

No solution would mean that there is no answer to the equation. ... Infinite solutions would mean that any value for the variable would make the equation true?

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