Mathematics High School

Q1. 2x^2+3x+8 when x=4
Q2. 6x2−4x−7 when x=2

Answers

Answer 1

Answer:

Q1.ans=52

Q2.ans=9

Step-by-step explanation:

substitute the value of x in the equations and open the bracket before adding and subtracting

Related Questions

For which equation(s) is -2 a solution?
А
23 +6 = 2
B
2 (2 - 4) = 63
1 1
32 + = -x + 6
2 4
с
D
7 - 3x = 52 +11
E
3x + 15 = 2x + 9

Answers

Answer:

b

lazy life

Step-by-step explanation:

what is 3 ( x+2) using distributuve propert​

Answers


3(x+2)

Distribute and multiply
3 to x and 2 to get 3x+6
The answer is 3x+6

Answer:

3x+6

Step-by-step explanation:

just multiply 3*x=3x and 3*2=6 so  3x+6

Hewo helppT-T pwease :3

2/5+____= 11/15

Answers

Answer:

1/3 is the answer

Step-by-step explanation:

Answer:

hi! so first you make 2/5 into 6/15 and the answer would be 5/15 (or 1/3 if you simplify it) because 6/15+5/15=11/15

Help please ASAP thank you

Answers

Answer:

150 by 18 or 20

Step-by-step explanation:

NEED HELP ASAP ILL GIVE BRAINLIST

What is the area of the circle below?


A
5.64 square meters

B
7.85 square meters

C
15.7 square meters

D
19.625 square meters

Answers

Answer:

I think it is C

Step-by-step explanation:

I am thinking of a number i multiply by 11 and add 22 i get the same answer if i miltiply by 4 and add 113 whats my number

Answers

Answer: 13

Step-by-step explanation:

Let the number that in thinking of be represented by x.

I multiply by 11 and add 22 will give the same answer as multiplying by 4 and adding 113. This.csn be firmed into an equation as:

(11 × x) + 22 = (4 × x) + 113

11x + 22 = 4x + 113

Collect like terms

11x - 4x = 113 - 22

7x = 91

x = 91/7

x = 13.

The number is 13

Which fraction, when written as a decimal, gives repeating decimals? a. 4 1/8 b. 1 1/4 c. 6/13 d. None of these PLSSS HELP ME OUT!

Answers

Answer:

d. None of these

Step-by-step explanation:

A perfect example of a fraction, when written as a decimal gives repeating decimals, is 1/3.

Robert deposits $ 3000 in State Bank of India for 3 year which earn him an interest of 8%. How much money does have in TOTAL after 3 years with interest? Show your steps to support your answer.

Answers

Answer:

$3779.14

Step-by-step explanation:

I'm going to assume that the interest is compounding annually

We have the following equation

PV(1+i)ⁿ

Plug in our numbers and we have

3000(1+.08)³

3000(1.259712)=3779.136 which rounds to 3779.14

ill mark u brainliest if u get it right​

Answers

560 + 20x = 700 so the blue one
Answer:
700 = 576 + 20x
Blue one

у = 3х + 1
у = 3х - 8
Solve by substation
Find y and x

Answers

Solve for the first variable in one of the equations, then substitute the result into the other equation.
No solution

i need help i'm really stuck

Answers

Answer:

8

Step-by-step explanation:

If the area is 32 and the formula for area of a triangle is base * height / 2, and you have base = 8 and height = x and area = 32, this would be:

8 * x / 2 = 32

Now, solve:

[tex]8x/2=32\\4x=32\\x=8[/tex]

Answer:

x=8

Step-by-step explanation:

Area is equal to half of the base times the height. We are told that the area is 32and the base is 8, so we can write this equation:

32=1/2(8)h

Multiply 1/2 by 8:

32=4h

Divide both sides by 4:

h=8

So now we know that x (the height) equals 8.

HTH :)

Monica would like to earn at least $150 a week, and her parents have told her she cannot work
more than 20 hr. each week. What is the least hourly rate should she look for in order to meet her?

Plz help I’ll give u brainliest

Answers

$150 / 20 hours = $7.5 an hour to make $150 a week

394.6 divided by 2 plssss help

Answers

Answer: 197.3 ok bye

Step-by-step explanation:

Answer:

197.3

Step-by-step explanation:

Put the following fractions in order from GREATEST TO LEAST.
1/2 7/8 3/4 2/2

PLEASE HELP

Answers

Answer:

2/2, 7/8, 3/4, 1/2

Step-by-step explanation:

First you have to change it in to fractions that all have the same denominators. 4/8, 7/8, 6/8, 1

Now you put them in order.  

1. Find the value of x.
Please I need help now

Answers

Step-by-step explanation:

since it's an Equilateral triangle

180/3=60°

6x=60

x=10°


Which right triangle's unknown leg measure is 43 units? Assume the given length are in the same unit of measure.
60
12
\/44
8
5
90
|/21
19
) Intro
Done

Answers

Answer: the fourth triangle

Step-by-step explanation:

I got it right :)

Answer:

The 4th triangle

Step-by-step explanation:

Last year at a certain high school, there were 50 boys on the honor roll and 75 girls on the honor roll. This year, the number of boys on the honor roll increased by 8% and the number of girls on the honor roll increased by 24%. By what percentage did the total number of students on the honor roll increase?

Answers

Answer:

17.6%

Step-by-step explanation:

50×8%=4

75×24%=18

4+18=22

50+75=125

22÷125=17.6%

Answer:

14.4 percent increase

Step-by-step explanation:

Add the following complex numbers: (2 + 3i) + (3 - 2i)

Answers

Answer:

5 + i

Step-by-step explanation:

Combine real part ans combine imaginary parts

2 + 3i + 3 - 2i = 2 + 3 + 3i - 2i

                      = 5 + i

Answer:

5 and 1i

Step-by-step explanation:

So you’re adding the following complex numbers: (2 + 3i) + (3 - 2i)

normally if you see a (-) in front of a number, that means it’s negative so we’re gonna think about this as -2i and positive 3.

so you’re gonna want to take the 2 regular while numbers (without the variable) and then add those together. they’re like numbers so neither of them have a variable, which means they can easily be added, but you can’t add a number like 7 to a number like 9h because there’s a variable.

Now that you’ve added the 2 and 3, you get 5 right? so now you’re gonna take the 3i and -2i, and add those together. since the number 3i is bigger than -2i, the ending number after you add those is gonna be positive, and it’s gonna be 1i.

now i’m not sure if you’re supposed to make an equation out of this but you’re answer will be 5 and 1i or 5 + 1i

also if you don’t want to put 1i, 1i is the same as just “i”. so you can put 5 + i :)

hope this helped!!

5. A number m is less than – 3 or greater than or equal to 1.
write the sentence as an inequality.

Answers

Answer:

m < -3 or m ≥ 1

Step-by-step explanation:

7. Two friends worked out on treadmills at the gym. Laura walked 7 miles in
1.75 hours. Ricki walked 12 miles in 2 hours. How much faster did Ricki
walk? *
0.25 mile per hour faster
2 miles per hour faster
They walked the same speed.
He didn't, Leo walked faster.

Answers

Answer:

Step-by-step explanation:

Laura walked 7/1.75=4 miles per hour

Ricky walked 12/2=6 miles per hour

Ricki is 2 miles per hour faster

Hep need please and thanks

Answers

the answer is the last one

(Please help asap!)

Max, James, and Karl have a total of 1020 video game achievements combined.

Karl has half the number of achievements that James has.

Max has 219 achievements.

How many achievements does James have?

Answers

First get rid of max 1020 -219 =801
801 now you must divide by 3 to get 267
That way you can times by 2 together to get james (534) and then karl will be at half of james at 267

So james equals 534

Good luck hope this helps brainliest would be appreciated

Trigonometry please help
50 pts

Answers

It is A









hope I helped :)

Answer:

Its A :)

Step-by-step explanation:

10 pt logs mark brain

Answers

Answer:

It's log 420

Step-by-step explanation:

If possible please explain!
​

Answers

Answer:

distributive to 4 and 2 thats all i could think of sorry

Step-by-step explanation:

Please help me geometry

Answers

Answer:

ASA

Step-by-step explanation:

ASA Congruence Theorem

What is the definition of the term CONSTANT? *

Answers

Answer:

It's an adjective. means regularly occurring, persustent; or, unchanging, in value, nature, or respect.

Which ordered pair comes from the table?
A. (2,5)
B. (1,2)
C. (2, 1)
D. (4,3)

Answers

Answer:

C

Step-by-step explanation:

Answer:

c

Step-by-step explanation:

(x,y)

(x-coordinate,y-coordinate.)

Tia earns $19.25 per hour she worked 36 hours what is her straight time pay

Answers

Answer:

$693

Step-by-step explanation:

Answer:

Tia earned $693 in straight time pay

Step-by-step explanation:

19.25×36= 693

30pts
I need help ASAP pls.❤️
A rectangular garden as an area of 10n2
17n + 7
The width of the garden is n - 1 .
Nhat is the length?

Answers

Step-by-step explanation:

1maybe you neeeda put it in calculator cause the problem easy just got to try

Other Questions
please help!!!!!!!!!!!!!!!!! Has Africa or Zimbabwe ever beat America in war? Which statement about the reflection below is true? Randy wanted to survey to determine the most preferred pet of the residents in his city. Which method of sampling BEST represents the most unbiased opinion?A) Survey 50 residents from 5 different areas B) Survey 100 residents who have pets C) Survey 100 residents who do not have pets D) Survey 50 residents in his are who but per food regularly from the supermarket Find the measureof DBC The mother determines the sex of the child approximately 50% of the timeTrue or False The price of a watch was increased by 20% to 162.What was the price before the increase? What brought an end to the Great Depression? which physical property would not be useful for finding the difference between baking soda and cornstarch? pick right answer pleaseA. densityB. massC. melting pointD. solubility 15. If R is the midpoint of OS, OR = 8x - 51 and RS = 3x - 6, find QS.15.PLEASE HELP 2. Describe two ways that mountains in Greece affected the AncientGreeks. Identify 7 physiological changes that occur in response to cardiorespiratory system at rest and during exercise. Solve 3[-x + (2 x + 1)] = x-1.X=DONE When we talk about soil depletion, which soil horizon is affected? Please help me to complete the impact on equity Please answer HELP IF YOUR ANSWER IS GOOD I WILL GIVE U BRAINIEST :))Major Arthur Godfrey Peuchen, starting to undress for the night, thought it was like a heavy wave striking the ship. Mrs J. Stuart White was sitting on the edge of her bed, just reaching to turn out the light, when the ship seemed to roll over a thousand marbles. To Lady Cosmo Duff Gordon, waking up from the jolt, it seemed as though somebody had drawn a giant finger along the side of the ship. Mrs John Jacob Astor thought it was some mishap in the kitchen. It seemed stronger to some than to others. Mrs Albert Caldwell pictured a large dog that had a baby kitten in its mouth and was shaking it. Mrs Walter B. Stephenson recalled the first ominous jolt when she was in the San Francisco earthquake then decided this wasnt that bad. Mrs E. D. Appleton felt hardly any shock at all, but she noticed an unpleasant ripping sound like someone tearing a long, long strip of calico. The jar meant more to J. Bruce Ismay, managing director of the White Star Line, who, in a festive mood, was going along for a ride on the Titanics first trip. Ismay woke up with a start in his de luxe suite on B deck he felt sure the ship had struck something, but he didnt know what.Based on what you know about the workers and passengers reactions, what is the central idea of the story? Which factor contributed most to the development of the cell theory? What are the 4 main types of transformations?translationcongruencerotationreactionreflectiondilation (aka enlargement)vertices Who appoints the county manager? Please help me solve this problem.