Mathematics High School

Find the value of 3a^2+2b, If a=3 and b = 4.

An explanation would be great.

Answers

Answer 1

Answer:

=35

Step-by-step explanation:

3(3) ^2 + 2(4)

= 3(9) + 8

= 35

Where you see a, substitute with 3 and where you see b, substitute with 4

Just follow the steps above.

Answer 2

[tex]\\ \sf\Rrightarrow 3a^2+2b[/tex]

[tex]\\ \sf\Rrightarrow 3(3)^2+2(4)[/tex]

[tex]\\ \sf\Rrightarrow 3(9)+8[/tex]

[tex]\\ \sf\Rrightarrow 27+8[/tex]

[tex]\\ \sf\Rrightarrow 35[/tex]

Related Questions

How to solve for x using the equation: 12 = -4 (- 6x - 3)

Answers

I don’t know how to explain it so I am just giving the equation

12=-4(-6x-3x)
Divide both sides by 4
12/4=-4(-6x-3x)/4
3=-4(-6x-3x)/4
3=-(-6x-3x)
3=9x
9x/9 = 3/9
Divide both sides by 9
x=1/3

What is the probability of rolling an even number on a number cube and flipping a tails on a coin?

Answers

Answer:

25% or 1 in 4 chance.

Step-by-step explanation:

The chances for rolling an even number are 3/6, because there are 6 numbers total, and 3 are even.

3/6 can be re-written as 1/2.

The chances of landing tails are also 1/2, because there are 2 sides and tails is one of them.

So then, multiply 1/2 by 1/2 to get 1/4.

Translate point C(-1,-2) using (y,x) -> (x+3,y-5) and then reflect over the x-axis

Answers

Step-by-step explanation:

Plot the point.

-1+3=2 and -2-5=-7

this is your new plot, (2,-7)

move the dot an equal distance across the x-axis, which is up and down.

HELP FAST!!! MARKING BRAINLIEST!!!
Prove the following theorem:
Given 3 different lines a, b, and c. If a is parallel to b (a║b), and c intersects a (c∩a), then prove that c intersects b (c∩b).

Answers

Answer:

Well, I think this is correct:

Well, if we know that a and b are parallel, that means they have the same slope but different y-intercept.  So, if c and a intersects, then c and b are bound to intercept, because when c intersects with a, it will also cross b, since it will be going in the same route...which will make it also intersect with b. (crossing.)

Sorry if I'm wrong.

Hope this helps! :)

There were 36 people in a school play. There were three times as many students in the play as teachers. How many students were in the play? How many teachers?

Answers

Answer:108

Step-by-step explanation:

36 times 3, right??

Can somebody help me pleaseeeeee

Answers

The answer:  a° = 180° - 62° = 118°    ,     b° = 62°  ,     c° = (180° - 62°) ÷ 2 = 59°

Ok done. Thank to me :>

Help tbh I have no idea to what to do rn

Answers

4x+1=17 ,17-1= 16., 16/4=4 The answer is x=4

Evaluate the determinate:
I -6 -6 1 I
I 3 -5 -2 I
I 4 3 -3 I
Please show all work, I give Brainliest.! :)

Answers

Answer:

103

Step-by-step explanation:

detailed explanation is in the diagram above

Tutorial
At a T-shirt stand on the boardwalk, 5 of the last 15 shirts sold were gray. Considering this
data, how many of the next 12 shirts sold would you expect to be gray?
shirts

Answers

4 shirts would be gray

Catrina wants to purchase a new bag she found on sale for $68. The bag is originally priced at $80. What is the percent of change in the price of the bag?

Answers

Answer: The percent change of the bag is 15%.

Can someone please help me with this question

Answers

m11=54°

m8=117°

m7=63°

Step-by-step explanation:

a) m2=m12 (corresponding angles)

m12=126°

180=m12+m11 (supplementary angles equal 180)

180=126+m11

m11=54°

b) m14=m8. (corresponding angles)

m8=117°

C) m7=180-m8 (supplementary angles equal 180)

m7=180-117

m7=63°

Sue is still a waitress. If she worked 21 hours this week and made $70 in tips she didn't
make enough for her weekly pay to be above minimum wage. How much does her
employer have to pay to make up the difference and ensure that she makes minimum
wage for the week?

Answers

Answer:

more than 23.3 $

Step-by-step explanation:

if we say she will work minimum 4 hours in day that mean it will be 28 hours

so she left 7 hours behind

and she make 3.33$ per hour (70/21=3.33) so (7 * 3.33 = 23.3) she need more than 23.3$

Translate this phrase into an algebraic expression.
7 increased by twice Goran's savings
Use the variable g to represent Goran's savings.

Answers

Answer: 2g + 7 or 7 + 2g

Step-by-step explanation:

7 increased by twice g can be represented as 2g + 7 or 7 + 2g

(−7c+8d)0.6

khan academy pls help.

Answers

Answer:

[tex]\sf -4.2c+4.8d[/tex]

Step-by-step explanation:

[tex]\sf \left(-7c+8d\right)\cdot \:0.6[/tex]

[tex]\sf 0.6\left(-7c+8d\right)[/tex]

Apply distributive property

[tex]\sf 0.6\left(-7c\right)+0.6\times \:8d[/tex]

[tex]\sf -4.2c+4.8d[/tex]

Have a good day!

How many solutions does the following equation have? 10x-1=10x+4

Answers

Your answer is no solution.Because if we transpose 10x to the left hand side with a change in the symbol, then it will become 0.10x - 1 = 10x +4or, 10x - 10x = 4 + 5or, 0 = 9Hence, the equation has no solution.

Hope you could get an idea from here.

Doubt clarification - use comment section.

Answer:

10x-1=10x+4

10x-10x=4+1

x=5

The cost to rent a car from Rent a Wreck is $15 a day plus a $30 deposit. The cost to
rent a car from Barely Running is $20 a day. How many days would you have to rent the
car for the cost of both companies to be the same?

Answers

Answer:

Step-by-step explanation:

Someone helppppppp. I swear I will cry for the rest of my life ;-;

Answers

3

Pentagon PQRST is 1/2 the size of ABCDE therefore, x = 3

Answer: there is no x so i can't answer it

Step-by-step explanation:

Leo wants his bowling mean to be at least 150. His scores are shown. 138, 157, 146, 129, 151

What is the lowest score for Leo’s mean to be 150.0?
(1 point)
121
146
154
179

Answers

The lowest score for Leo’s mean to be 150.0 is 179.

Mean can be described as the average of a set of numbers.

Mean = sum of number / total numbers

In order to determine the lowest score Leo can have so his mean can be at least 150, the sum of his current scores has to be determined.

Sum of scores = 138 + 157 + 146 + 129 + 151 = 721

The second step is to determine the sum of scores when his mean is 150

Sum of scores when mean is 150 = 150 x 6 = 900

Least score = 900 - 721 = 179

To learn more about mean, please check: https://brainly.com/question/12528427

Answer:

179

Step-by-step explanation:

One it says he wants his score to be at least 150, and then it shows what his scores are which is;  138, 157, 146, 129, 151, then it gives the options of

121

146

154

an 179

then it says what is the lowest score for Leo's mean to be 150.0

and the lowest that it can be is the answer which is 179

Hope this helped, if yes pls put thanks :D

pls answer quickly

the spring scan shows mass in kilograms what is the mass shown here?

A) 2.5kg

B) 7.5kg

C) 12.5kg

D) 17.5​

Answers

7.5 kg
Hope this helps!

Answer:

B) 7.5kg

Step-by-step explanation:

It is between 5kg and 10kg, so it would be 7.5kg.

The average number of students in ten 5th grade classes is 27. Which of the following can be extrapolated from this information?
A
The average weight gain of a kitten on a newly developed brand of kitten food is also 0.3 lbs. a month.
B
The average weight gain of an adult dog on a newly developed brand of adult dog food is also 0.3 lbs. a month.
C
The average weight loss of a puppy on a newly developed brand of puppy food is 0.3 lbs. per month.
D
none of the above

Answers

D Extending the application of (a method or conclusion, especially one based on statistics) to an unknown circumstance by assuming that existing trends will continue or that similar procedures will be applicable

The product of w and 2 is greater than or equal to 19.

Answers

Equation Form:

w x 2 [tex]\geq[/tex] 19

Divide both sides by 2:

w [tex]\geq[/tex] 9.5

So, w must be equal to or greater than 9.5 for this equation to work.

Which expression are equivalent to 3/5x + 3

2/5x + 1/5x

4/5x - 1/5x + 3

2/5x + 3 3/5x -1

1 + 3/5x + 2

1 +x/5 + 2

1 + 2/5x +3

Answers

Answer:

1 + 3/5x + 2

the first expression = eighteen and 1 + 3/5x + 2 is the only other expression that = eighteen. Hope this helps and good luck!!

Step-by-step explanation:

the answer is 1+3/5x+2



Which choice is similar to the figure shown?

Answers

First choice in the upper left corner.


It is the same shape with same proportions, just dilated.
2/5 = 0.4
8/20 = 0.4

Help??
Trying to find g
1/3(g-3)=3

Answers

Answer:

g = 12

Step-by-step explanation:

[tex]\frac{1}{3}[/tex] (g - 3) = 3 ← multiply both sides by 3 to clear the fraction

g - 3 = 9 ( add 3 to both sides )

g = 12

1/100 = ?/? x 1/1000

Answers

Answer:

10 or 10/1

Step-by-step explanation:

1/1000 * 10= 0.01 = 1/100

PLS HELP round to the nearest hundredth

Answers

answer is 3.40 hope this helps

A coffee pot holds 3 quarts of coffee. How much is this in cups?

Answers

Answer:12 cups

Step-by-step explanation:

because 1 quart is equal to 4 cups multiply by 3

PLEASE I AM IN DESPERATE NEED OF HELP

Answers

Answer:

third one

Step-by-step explanation:

a number is less than 3 1/2

Solve with elimination:
-2x - 4y = 8
-6x +24 = 12y

Answers

Ohh, Elimination Im doing that XD So its

Anwser - No Solution

Help i need help IM SO CONFUSED

Answers

Answer:

1. 3/8 are female

2. 1/6 ton

3. 1 and 31/40 kg

Step-by-step explanation:

1. 5/8-male, 8/8 - 5/8 = 3/8

2. 2/15 + 3/15 = 5/15, 5/15 = 1/3, 1/3 = 10/30, (1/2 = 15/30) 15 - 10 = 5, 5/30 = 1/6

3. 7/8 + 9/10 = 71/40

Answer:

Step-by-step explanation:

1) 5/8 of the staff is male, 5/12 of the staff works part time

the question askes what fraction of the workforce is female

if 5/8ths is male than the other 3/8ths are female

3/8 of the staff is female

2) how much food was fed at night

2/15 + (2/15 + 1/15) + x = 1/2

2/15 + (3/15) + x = 1/2

5/15 + x = 1/2

1/3 + x = 1/2

x = 1/6

1/6th of a ton was fed at night

3)

just add them

7/8 + 9/10 = 71/40 or 1 31/40

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