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sineoko [7]
3 years ago
7

3.14(a2 + ab) when a = 4 and b = 2.

Mathematics
1 answer:
Debora [2.8K]3 years ago
5 0
Just replace a with 4 and b with 2 and your equation looks like
3.14 (4×2+4×2)
solve within the parenthesis first
3.14 (8+8)
3.14 (16) =50.24
You might be interested in
–4b + 8c + 12 – 8b – 2c + 6
sertanlavr [38]

Answer:

-24

Step-by-step explanation:

-4-8= -12

8-2=6

12+6=18

-12b+6c+18

Greatest common factor = 6

-12/6=-2

6/6=1

18/6=3

D 6(-2b+1c+3)

-12(2)+6(-3)+18

-24+(-18)+18

-42+18= -24

-24

7 0
3 years ago
Read 2 more answers
PLEASE ANSWER THIS ITS DUR IN 10 MINUTES!!!
Ray Of Light [21]

Answer:

It is porportional

Step-by-step explanation:

Its Porportional because it goes through zero.

4 0
3 years ago
A book club has 200 members
nikklg [1K]
So these are decmials of the accutal total so

.32=32%
what makes this question easy is that there are 200 members so to convert the percents into accutall numbers so like .32=32%=64 people (since 200 is 2 times of 100)

A. fiction of 31-40 compared to 21-30
fiction 31-40=.38=38%=76 readers
fiction 21-30=.32=32%=64 readers
76-64=12
A is FALSE

B. so we want to know how many people are 31-40 and prefer fiction
so .38=38% and 38% of 200=76
B is FALSE

C 43 members are 21-30
so we look at the total row for the 21-30 people and see that .43 or 43% or 86 people are in the 21-30 age group
C is FALSE

D. 140 members prefer fiction
look at the total column for fiction and see that .70 like fiction .70=70%=140 people
D is TRUE

so A,B,C are FALSE
D is TRUE
7 0
3 years ago
Pls help with the following:<br><img src="https://tex.z-dn.net/?f=9x%20%7B%7D%5E%7B2%7D%20%20-%204%20%3D%200" id="TexFormula1" t
mario62 [17]

Answer:

x = ± \frac{2}{3}

Step-by-step explanation:

9x² - 4 = 0 ( add 4 to both sides )

9x² = 4 ( divide both sides by 9 )

x² = \frac{4}{9} ( take the square root of both sides )

x = ± \sqrt{\frac{4}{9} } = ± \frac{\sqrt{4} }{\sqrt{9} } = ± \frac{2}{3}

7 0
2 years ago
12% of yesterday's customers purchased premium grade gasoline from Jasco. If 24 customers bought premium grade gasoline how many
weqwewe [10]

Given:

The percentage of customers who purchased gasoline is <em>g</em> = 12%.

The number of customers who purchased gasoline is <em>n</em> = 24.

The objective is to find a total number of customers altogether.

Explanation:

Consider the total number of customers altogether as <em>x.</em>

The value of <em>x</em> can be calculated as,

\begin{gathered} \frac{1\text{2 \%}}{100\text{ \%}}=\frac{24}{x} \\ x=\frac{100}{12}\times24 \\ x=200 \end{gathered}

Hence, the total number of customers altogether is 200.

8 0
1 year ago
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