Mathematics High School

Simplify 7x^2 + 3 - 5(x^2-4)

Answers

Answer 1

Answer:

2x^2 + 23

Step-by-step explanation:

For this problem, we will simply combine like terms after using the distributive property:

7x^2 + 3 - 5(x^2 - 4)

= 7x^2 + 3 - 5x^2 + 20

= 7x^2 - 5x^2 + 3 + 20

= 2x^2 + 23

Cheers.

Answer 2

Answer:

2x^2 + 23

Step-by-step explanation:

The third option

Related Questions

Evaluate ab - 0.50 when a = 1 and b = 5

Answers

Answer: 4.5

Step-by-step explanation:

To evaluate ab - 0.50, we want to plug in the given values for a and b and then solve.

(1)(5)-0.5                       [multiply]

5-0.5                             [subtract]

4.5

After plugging in the values of a and b, we found that the solution is 4.5.

Find 7% sales tax on an item that costs 5.95 ​

Answers

Answer:

I got $0.42

Step-by-step explanation:

helpppppppp me please:(

Answers

333333e33eeeeeebjkbb

the anwers is c

A scientist records the number of deer observed in three areas of a forest. The table shows her observations. Area A 18 miles 162 deer. Area B 17 miles 153 deer. Area C 26 miles 234 deer. How many deer per square mile did the scientist observe in the forest?

Answers

9 deer per square mile

There are 9 deer per square mile because once you add all of the miles together it equals 61. Then you add all of the deer seen together equaling 549. You then divide 549 by 61 equaling 9.

A) A plane takes off at 50 feet below sea level and climbs 1,542 feet. At what altitude is the plant currently flying?
B) How much higher does the plane have to climb to reach 3,400 feet?
Make sure you answer both parts of the question and label each part of the question.

Answers

Answer:

A) 1,492

B) 1,908

Step-by-step explanation:

A) The equation set up for this part is 1,542-50=1,492 We know that we're subtracting 50 from 1,542 because it say that the plane starts below sea level.

B) The equation set up for this part is 3,400-1,492=1,908 We know that we're subtracting the answer from part A from 3,400 because the plane will need to climb the difference in order to reach 3,400.

I need help ASAP please and thank you!!:)

Answers

Answer: The mean of the data will decrease.

The median of the data will not change.

The range of the data will decrease.

Answer:

Mean original, (14.3)

Median original, (14.5)

Range original, (25)

After removing 35

Mean: 13.1

Median: 14.5

Range: 7

Step-by-step explanation:

mean- add all numbers together and divide by the amount of numbers there.

median- the middle number.

range- the largest minus the smallest number.

Find the midpoint of A(5,8) and B(-9,-6)

Answers

The midpoint is (-2,1)

Nate withdraws $40 from his checking account each dayWrite and solve a multiplication equation to find how long it will take him to withdraw $680

Answers

x = # of days

$40x = $680

Divide each side by $40

x = 17 days

40x=680 680/40=17 so x=17

5) Adam bought 5 DVDs that cost $12.95
each. How much did Adam spend
before taxes?

Answers

Answer:

  $64.75

Step-by-step explanation:

You can add $12.95 five times:

  $12.95 +12.95 +12.95 +12.95 +12.95 = spending

but it is probably easier to use multiplication:

  5 × $12.95 = spending = $64.75

Adam spent $64.75.

Answer:

64.75

Step-by-step explanation:

So you have 5 DVDs bought and 12.95 for each.

12.95 x 5

12.95 + 12.95 = 25.90

25.90 + 12.95 = 38.85

38.85 + 12.95 = 51.80

51.80 + 12.95 = 64.75

So your answer is $64.75

find the value of (27/8)-2/3

Answers

The value of (27/8)-2/3 is..

Exact Form: 65/24

Decimal Form: 2.7083...…

Mixed Number Form: 2 17/24

Answer: 65/24 decimal form: 2.7

Step-by-step explanation: (27/8)-2/3

(3^3/2^3)-2/3

3(3^)+8(-2)/2^3.3

find the product (-4)(-2) , find the product (-8)(-3) which product is greater

DIFFERENT ANWSER BTW
next Some friends played a board game. During the​ game, one unlucky player had to move back 8 spaces 5 turns in a row. Find a number to represent that​ player's movements for those 5 turns. AND YES I HAVE A TEST DUE TONIGHT

Answers

Answer: 8, 24, and 24 is greater

Step-by-step explanation:

(-4)(-2) = 8

(-8)(-3) = 24

8 < 24

21x-13= 10x+31


Find uv if the value x=4

Answers

21(4)-13=10(4)+31
84-13=40+31
71=71

dare to solve it so easy ☺️​

Answers

Answer: 1.23×10¹⁶

Step-by-step explanation:

For this problem, we want to use order of operations to solve.

Parenthesis

Exponent

Multiply

Divide

Add

Subtract

Let's first solve the parenthesis.

[tex](9*\frac{999999999}{9+9+9+9+9+9+9+9+9} )^2[/tex]                [add denominator]

[tex](9*\frac{999999999}{81} )^2[/tex]                                  [cross multiply]

[tex](\frac{999999999}{9} )^2[/tex]                                       [divide]

[tex](111111111)^2[/tex]                                     [exponent]

1.23×10¹⁶

The ending result is way too large. Therefore, we use scientific notation and get 1.23×10¹⁶.

Simplify 4 to the 2nd power ⋅ 4 to the 8th power.

Answers

Use exponent rule: x^y * x^z = x^y+z

4^2 * 4^8

4^2+8

4^10

1,048,576

Best of Luck!

Brooklyn bought 9 chicken wings for $12. What was the cost of the wings in wings per dollar?

Answers

Answer:

3/4 wings per dollar

Step-by-step explanation:

We want to find wings per dollar

9 wings/ 12 dollars

Divide top and bottom by 3

3/4 wings per dollar

What is the domain and range

Answers

domain is x>1 and range is all real numbers

I need help...!!!!!please...

Answers

Step-by-step explanation:

sorry i am busy i will answer it tomorrow or free time

Same and Different

18+(-4)=?

-5+(-18)=?

9+(-18)=?

-18+18=

please help me with the answers!!!

thanks

Answers

Answer:

Step-by-step explanation:

18+(-4)= 18 - 4 = 14

-5 + (-18) = - 5 - 18 = - 23  

9 + (-18) = 9 - 18 = - 9  

-18 + 18 = 0

2. What are the five components of health and wellness, and how are they defined?​

Answers

Answer

1. Cardiovascular endurance

2. Muscular strength

3. Muscular endurance

4. Flexibility

5. Body composition

Step-by-step explanation:

4. A mistake was made when solving the problem below.
Line 1: 2022+6
Line 2: 204 + 6
Line 3: 80 + 6
Line 4: 86
The mistake was made in Line

Answers

Answer:

Wdym

Step-by-step explanation:

wdym

Line 1 is the mistake of the problem solving being made

A car of mass 100 kg is moving with a velocity of 10 m/s on a road when it collides with a bus weighing 150 kg which is at rest. If both the vehicles start drifting together after the collision, find the velocity with which they are moving now?

Answers

Answer: they would be moving 15m/s

Step-by-step explanation:

10m/s times 150kg= 1500divided by 100kg=15m/s

Simplify 2(x-4) +3^2

Answers

Answer:

Step-by-step explanation:

2x - 8 + 9

2x + 1

Answer:

YOUR ANSWER IS 2x+1

HOPED THAT HELPED☺

Step-by-step explanation:

2(x-4) +3^2

multiply 2 to(x-4)

solve for 3^2

2x-8+9

add -8to9

2x+1

what is 4(3x+5) i need help

Answers

Answer:

As an equation its 12x+20

Step-by-step explanation:

You would distribute 4(3x+5) by multiplying 4 by 3x and 4 by 5. That gets you 12x+20

Pls help me with this question

Answers

I believe it’s c because a negative times a negative is equal to a positive number.

bruh what is (-4×-6)-4²​

Answers

Answer:

8

Step-by-step explanation:

the anwser is you use the formal

1. Diquan bought a shirt for $20 and paid 10% in sales tax. What was total cost of
the shirt

Answers

Answer:

22 dollars

Step-by-step explanation:

20/10=2 dollars + 20= 22

what is
5(x+2)=7(4-x)
a.-9
b. 1.5
c 3.2
d. 9​

Answers

Answer:

c. 3.2

Step-by-step explanation:

5(x+2)=7(4-x)

5(x+2)=7(-x+4)

5x+5*2=-7x+7*4

Help me plzz!!!!!!!!!!!!!!!

Answers

The answer is A.

hope this helped! have a great day :)

one third of one seventh of a land is sold for RS. 30000.What is the value of land? ​

Answers

Answer:

Step-by-step explanation:

Let the value of the land = Rs . 30000

[tex]\frac{1}{3}of\frac{1}{7}of x = 30000\\\\\\\frac{1}{3}*\frac{1}{7}*x = 30000\\\\\\x = 30000*\frac{3}{1}*\frac{7}{1}\\\\\\[/tex]

x = Rs. 630000

6x+2y=12 how do I show my work

Answers

divide both sides
3x+y-6=0
move variable
6x=12-2y
divide
x=2-1/3y
solve
Final answer:
x=2
x=1 y=3

Explanation: I knew that 6+6 would equal 12, so I decided to make the 2 in the equation into a 6 by plugging in 3 to y. Then, I plugged in one to make it stay a 6. To check my work, 6(1)+2(3)=12
Other Questions
An amusement park charges $12 for admission and $1.50 per ride r. Jeremy goes to the park with $42,The equation that represents this situation is 12 + 1,50r = 42. Determine how many rides r Jeremy cango on. How do you say: We ride bikes around town in Spanish? When an exponent is a negative number, we can think of it as taking the...? Subject EconomicsPls help Part DHow will you ask a group of students for their names? (1/4)^-3/2. The topic is indices. Which of the following is not true about Darwins book On the Origin of Species?a.He worked on the manuscript for three years.b.It was successful.c.It explained his theory of evolution.d.It was based on his findings in South Africa. 13. Which is the range of the relationbelow?0 2 468Ly-2 -1012A 0, 2, 4, 6,8B-2, -1,0, 1, 2C-2, -1,0, 1, 2, 4, 6,8D 0,2 8^10 8^5 = 8^2 true false the man cut down a tree in passive what is f(7) for the rule of f(x)=-5x+10 Help me solve step by step L varies directly with the square of Z. L is 12 when Z is 2. Find the value of L when Z is 4. WHOEVER GETS IT RIGHT GETS BRAINLIEST AND 15 POINTSwhy did people stop living as nomadic hunter-gatherersA. the Neolithic Revolution takes placeB. People begin hunting and gathering foodC. Societies develop advanced potteryD. Rivers Around The world begin to floodI KNOW ITS NOT C. Explain how the Declaration of Independence was significant to the creation of the Constitution. give situations wherein positive relationships will help to build a peaceful community Convert a speed of 933 cm/s to units of inches per minute you throw a basketball straight up into the air with a speed of 24.5m/s. how long does it take to reach its highest point Can anyone help me with this please MUCH APPRECIATED Which angle pairs in the diagram are supplementary angles? Check all that apply.3 and 61 and 45 and 64 and 56 and 7