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2 years ago

If a = 7, b=5 and c=3, what is the value of 3b2 (3b squared)

Mathematics

2 answers:

lorasvet [3.4K]2 years ago

5 0

Answer:

Step-by-step explanation:

3×(5) squared becomes 3× 25=75

ser-zykov [4K]2 years ago

3 0

Answer:

225

Step-by-step explanation:

You are only paying attention to B in this.

3b also means 3 multiplied by b or in this case 3 multiplied by 5, which is 15

Then you would have 15 with an exponent of 2

For exponents you multiply the original number by itself for the number of exponents (2= n multiplied by itself)

This would mean that you would have to do 15 by 15 getting your answer of 225

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What is the average rate of change from x = −1 to x = 1? −4 −2 2 4

UkoKoshka [18]

The answer of average rate o change is 2. Hope it help!

5 0

3 years ago

6000 - 25p = 4000 what does p equal?

tresset_1 [31]

Answer:

Step-by-step explanation:

25x80=2000

6000-2000=4000

5 0

2 years ago

Read 2 more answers

A real estate sales agent receives a salary of $250 per week plus a commission of 2% of sales.Write an equation that gives the w

lisabon 2012 [21]

The equation y=0.02x+250 gives the weekly income y in terms of sales x.

Step-by-step explanation:

Given,

Weekly salary of real estate agent = $250

Commission rate = 2%

Let,

x be the sales per week.

y be the total weekly income.

Amount of commission = 2% of sales per week

Amount of commission = $\frac{2}{100}*x$

Amount of commission = 0.02x

Total weekly income = Amount of commission + Weekly salary

$y=0.02x+250$

The equation y=0.02x+250 gives the weekly income y in terms of sales x.

Keywords: equation, percentage

Learn more about percentages at:

#LearnwithBrainly

3 0

3 years ago

QUESTION 20

Elodia [21]

Answer:

B. -55

Step-by-step explanation:

La resta entre ambas funciones consiste en la sustracción de términos semejantes como demostraremos a continuación:

1) $f(x) =-2\cdot x ^{2}-6$ Dado

2) $g(x) = x+4$ Dado

3) $(f-g)(x) = (-2\cdot x^{2}-6)-(x+4)$ Definición de resta de funciones.

4) $(f-g)(x) = (-2\cdot x^{2}-6)+(-1) \cdot (x+4)$ $(-1)\cdot a = -a$

5) $(f-g)(x) = (-2\cdot x^{2}-6) + (-x-4)$ Propiedad distributiva/ $(-1)\cdot a = -a$

6) $(f-g)(x) = -2\cdot x^{2}-x+(-6-4)$ Propiedad conmutativa

7) $(f-g) (x) = -2\cdot x^{2}-x-10$ Sustracción de términos semejantes/Resultados.

A continuación, evaluamos la función resultante en $x = -5$ :

$(f-g)(-5) = -2\cdot (-5)^{2}-(-5)-10$

$(f-g)(-5) =-55$

Por ende, la respuesta correcta es B.

8 0

2 years ago

Mary has some trading cards. Julie has 3 times as many trading cards as Mary. They have 36 trading cards in all. Which of these

riadik2000 [5.3K]

Answer:

C. X+3x=36

Step-by-step explanation:

1. If you add the x's to get: 4x=36

2. Do division to get 9.

3. if you plug in 9 in the original,and multiply: 9+27=36

4. There's your answer..... and i ran out of steps.

3 0

3 years ago