Mathematics High School

Evaluate and simplify the
expression when a=2 and b=4.
4a + 2b2 - 2(a – 3b) = [?]

Evaluate And Simplify Theexpression When A=2 And B=4.4a + 2b2 - 2(a 3b) = [?]

Answers

Answer 1

Answer:

92

Step-by-step explanation:

let's start off by plugging 2 for every a in the equation and 4 for every b.

4a+2b^2-2(a-3b)=?

4(2)+2(4)^2-2(2-3(4))=?

8+8^2-2(2-12)=?

8+64-2(-10)=?

8+64+20=?

?=92

Answer 2

Hello there!:)

60

is the answer!

Correct for Acellus! I know because I had it and it was correct!

4a+2b²-2(a-3b)

4a+2b^2-2a+6b

4a-2a+2b^2+6b

2a+2b^a+6b

2(2)+2(4)2+6(4)

4+32+24

60

Hope this helps!! :)

Related Questions

What is the constant of proportionality between y and x in the graph?

Answers

Answer:

y=2x

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

the answer is 2 bc if we put the y axis as how many cats in kiki's house and x axis as how many dogs were in kiki's house, we would use this equation y=kx

the k would be our unit rate and y would be our cats, x would be dogs, so we divide y to x meaning 4 divided by 2. the unit rate would be 2.

2(x - 3) =
Your answer

Answers

Step-by-step explanation:

first you have to multiply 2 and x, which is 2x

And Then you do 2x-3 which is -x

- the Question is not specific.

What is the prime factorization for 7

Answers

Answer:

2, 3, 5, 7, 11, 13, 17, 19 and 23,

Step-by-step explanation:

The first few prime numbers are: 2, 3, 5, 7, 11, 13, 17, 19 and 23,

A contractor purchases seven dozen pairs of padded work gloves for $101.64 she incorrectly calculated the unit price is $14.52 prepared for the expense report what is the correct unit price what is this error

Answers

Answer:

i got 14.52 as the unit price, Is there some sort of tax or extra expense not included with your question?

Step-by-step explanation:

What is the probability that 2 cards selected from a standard deck of 52 cards without replacement are both odd numbers?

Answers

Answer:

25/52, bcos there are 25 odd numbers from 1 to 52

Can you help me, friends, please?

Answers

Answer:

slope: -3

y-intercept: 3

y = -3x +3

Step-by-step explanation:

Hint: Use the Desmos Graphing Caculator for liner equaions!

my correlation coefficient for the linear model i created is 0.8. What does this mean?

Answers

This means that your coefficient of correlation indicates strong correlation between the Independent variable and the dependent variable

17. The distance traveled at a constant speed varies
directly with the amount of time traveled. Sara
drove 200 miles at a constant speed of 50 mi/hr.
Holly drove for the same amount of time as Sara
but at a constant speed of 65 mi/hr. Find the
distance traveled by Holly. Justify your answer.
Hurry plz

Answers

Answer:

260 miles

Step-by-step explanation:

Sara made it to her destination in four hours, while Holly made it to her destination traveling 260 miles. This can be calculated by taking Sara's 200 miles, and dividing it by 50 mph to get a total of four hours spent driving. If Holly is also driving for four hours, but instead traveling at 65 mph, you can take 65 and multiply it by four hours to get a total of 260 miles. Hope this helps!

what is 1/8^3 as a negative exponent ​

Answers

Answer:

1/8 ^ -3 = 512

Step-by-step explanation:

What is 5x+4= 14 Solve for x

Answers

Answer:

2

Step-by-step explanation:

5 x 2=10+4=14

x=2

5x+4=14
5x=14-4
5x=10
X=2

8/9 with a exponet of 0

Answers

Answer:

1

Step-by-step explanation:

this is because the number is not getting multiplied by anything.

Answer:

1

Step-by-step explanation:

(8/9) ^0

Any number( besides 0) raised to the power of 0 is 1

counterexamples in math: HELP WITH NUMBER 15,

basically write it in a sentence: "I have observed (a+b)^2 and a^2+a^2 to be false ______________"

Answers

Answer:

(4 + 3)² = 49

4² + 3² = 25

Step-by-step explanation:

Thats a counterexample for this question

What is the solution to this equation?
2x+10=28

Answers

Answer:

x=9

Step-by-step explanation:

2x+10=28

Subtract 10 from both sides

2x=18

Divide by 2 on both sides

x=9

Answer:

x = 9

Step-by-step explanation:

2x = 28 - 10

2x = 18

x = 9

what is the awnser i need to know and brainleist

Answers

Answer:

The answer would be D

Step-by-step explanation:

2.10 would be a little after 2.

Hoped this helped :)

Answer:

the answer is

Step-by-step explanation:

D

Write 2^3×2^6 as a single power of 2.​

Answers

2^9, as when multiplying two numbers with the same base “2” the exponents are added.

Answer:

The answer is 2^9

Step-by-step explanation:

You add the exponents.

Thats it.

Question options:

A.-4


B.0


C.4


D.-2

Answers

I think the answer is 0

FIRST CORRECT ANSWER GETS BRAINLIEST, 43 ISNT THE ANSWER THANKS

Answers

Step-by-step explanation:

10+2+2+7+5+3+8+8= 21+24= 45units

You forgot to add the 2 so it should be 45

The expression (3x − 4y2)(3x + 4y2) is equivalent to:

Answers

Answer:

9x-16y2

Step-by-step explanation:

Combine like terms! 3 x 3= 9   -4y2 x 4y2= -16

9x-16y2

Answer:

[tex]point \\ (a + b)(a - b) = {a}^{2} - {b}^{2} \\ so \: we \: have \: \\ ({3x})^{2} - ({4 {y}^{2} })^{2} = 9 {x}^{2} - 16 {y}^{4} [/tex]

i hope i have been useful buddy.

good luck ♥️♥️♥️♥️♥️

plz, help me with this QUICKLY PLZ :(

Answers

Answer:

7/6

360

60

Step-by-step explanation:

HELP PLS IM GOING TO CRY

Answers

Answer: y = 4/4x +  3

Write the converse of the following conditional? If you own a Prius, then you own a car made by Toyota.

Answers

Answer:

You own a car made by Toyota if you own a Prius.

Step-by-step explanation:

If the conditional is p->q then the converse would be q->p. So basically to get the converse switch the order of the statements.

i need to know the answer to this, im not sure if i know it.

Answers

Answer:

Put a Greater than symbol >

Step-by-step explanation: That question is showing absolute value which is basically the amount it takes to get there from zero.

-5 with absolute value becomes a regular 5

Answer:

its >

Step-by-step explanation:

please help need asap

Answers

Answer:

b and e.

Step-by-step explanation:

You will find this by solving each equation for 15b (get 15b by itself)

A pool gained 10 gallons of water on Friday due to rain. How could the owner of the pool bring the water level back to its previous level? Select three that apply. A Let 10 gallons of water evaporate. B Add 10 gallons of water with a hose. C Drain 10 gallons of water from the pool. D Increase the amount of water by 10 gallons due to rain. E Let her kids play in the pool and splash out 10 gallons of water. F Fill 10 old milk gallons with water and dump them into the pool.

Answers

Answer:

A, C, and E

Step-by-step explanation:

we want to eliminate 10 gallons of water, not add 10 gallons

Graph the Linear Function h(x) = -2x - 4

Answers

Hope this helps!


h(x)= -2x -4

Given F(h)=9h+8 , find : f(3)

Answers

Answer: f(x) = x9h(x)

h(-1) = 2

h'(-1) = 5

We need to find h(x) first. Once we have h(x), we can find the derivative of f(x). Then evaluate the derivate when x = -1.

We know that derivative is the slope of the tangent line. In this case, the slope of the line tangent to h(x) at x=-1 is 5.

h(-1) = 2 has a coordinate point of (-1, 2).

2 = 5(-1) + b

2 = -5 + b

7 = b

h(x) = 5x + 7 -----> equation of the tangent line

f(x) = x9(5x + 7)

f(x) = 5x10 + 7x9

Take the derivative of f(x).

f'(x) = 50x9 + 63x8

f'(-1) = 50(-1)9 + 63(-1)8

f'(-1) = -50 + 63

f'(-1) = 13

Step-by-step explanation:

Answer:

f(3) = 35

Step-by-step explanation:

Since we are given f(3), that means h = 3

f(3) = 9(3) + 8

f(3) = 27 + 8

f(3) = 35

Best of Luck!

The swimming pool is open when the high temperature is higher than 20°C. Laney tried to swim on Monday and Thursday the pool was open on Monday but it was closed on Thursday the high temperature it was 30°C on Monday but decreased at a constant rate in the next three days. What is an any quality to determine the rate of temperature decrease in degrees Celsius per day from monday to thursday

Answers

Answer:

30 - 3t ≤ 20

Step-by-step explanation:

Given that :

Pool is open when high temperature is higher than 20°C

From 30°C ; temperature decreased at a constant rate in the next three days ; that is the daily fall in temperature for 3 days is the same.

Let the fall or decrease in temperature = t

Constant decrease for 3 days = 3t

Change in temperature over 3 days :

Initial temperature - constant decrease

30°C - 3t

Hence, inequality to determine rate of temperature decrease :

30 - 3t ≤ 20

Find the distance between the two points in simplest radical form.
(8, – 7) and (1, -1)

Answers

Answer:

The distance between the two points is [tex]\sqrt{85}[/tex] units

Step-by-step explanation:

Let us revise the rule of the distance between two point [tex](x_{1},y_{1})[/tex] and  [tex](x_{2},y_{2})[/tex]

[tex]d=\sqrt{(x_{2}-x_{1})^{2}+(y_{2}-y_{1})^{2}}[/tex]

∵ We need to find the distance between the two points (8, -7) and (1, -1)

→ Let [tex]x_{1}[/tex] = 8 and [tex]x_{2}[/tex] = 1

→ Let [tex]y_{1}[/tex] = -7 and [tex]y_{2}[/tex] = -1

→ Substitute their values in the rule above

∴ [tex]d=\sqrt{(1-8)^{2}+(-1--7)^{2}}[/tex]

∴ [tex]d=\sqrt{(-7)^{2}+(-1+7)^{2}}[/tex]

∴ [tex]d=\sqrt{49+36}[/tex]

∴ [tex]d=\sqrt{85}[/tex]

→ Simplify the radical

∵ 85 = 5 × 17

→ Both of them are prime numbers

∴ The simplest form of [tex]\sqrt{85}[/tex] is [tex]\sqrt{85}[/tex]

∴ The distance between the two points is [tex]\sqrt{85}[/tex] units

0.35 rational or irrational

Answers

Answer:

Irrational

Step-by-step explanation:

Answer:

Rational

Step-by-step explanation:

The number 35 is a rational number if 35 can be expressed as a ratio, as in RATIOnal. A quotient is the result you get when you divide one number by another number. For 35 to be a rational number, the quotient of two integers must equal 35

help please it would be very much appreciated

Answers

Answer:

54 degrees

Step-by-step explanation:

4y-7=2y+11

2y=18

y=9

4(9)-7=25

2(9)+11=29

25+29=54

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