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3 years ago

Plz helplplpp this is due NOWWW

Mathematics

2 answers:

frez [133]3 years ago

8 0

Answer:

Option 2

Step-by-step explanation:

1/4 is equal to .25 or 25/100

Alex17521 [72]3 years ago

4 0

Answer:
Option 2

Explanation:
1/4 =0.25
0.25 x 5 = 1.25
1/4 x 5 = 1 1/4

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If a+b+c =0 show that a³+b³+c³= 3abc

slega [8]

Answer:

Step-by-step explanation:

a+b+c=0, a+b=-c,a+c=-b, b+c=-a

(a+b+c)^3=(a+b+c)^2*(a+b+c)=(a^2+b^2+c^2+2ab+2ac+2bc)*(a+b+c)=

a^3+ab^2+ac^2+2a^2b+2a^2c+2abc+a^2b+b^3+bc^2+2ab^2+2abc+2b^2c+a^2c+b^2c+c^3+2abc+2ac^2+2bc^2=a^3+b^3+c^3+3a^2b+3a^2c+3ac^2+3ab^2+3bc^2+3b^2c+6abc=

a^3+b^3+c^3+3a^2*(b+c)+3c^2(a+b)+3b^2(a+c)+6abc=

a^3+b^3+c^3+3a^2*(-a)+3c^2*(-c)+3b^2*(-b)+6abc=

a^3+b^3+c^3-3a^3-3c^3-3b^3+6abc=

6abc-2a^3-2b^3-2c^3=2(3abc-a^3-b^3-c^3)=

2*[3abc-(a^3+b^3+c^3)]=0

so 3abc-(a^3+b^3+c^3)=0

so a^3+b^3+c^3=3abc

7 0

3 years ago

Consider the integral 8 (x2+1) dx 0 (a) Estimate the area under the curve using a left-hand sum with n = 4. 250 Is this sum an o

Leya [2.2K]

Answer:

(a) 120 square units (underestimate)

(b) 248 square units

Step-by-step explanation:

(a) left sum

See the attachment for a diagram of the areas being summed (in orange). This is the sum of the first 4 table values for f(x), each multiplied by 2 (the width of the rectangle). Quite clearly, the curve is above the rectangle for the entire interval, so the rectangle area underestimates the area under the curve.

left sum = 2(1 + 5 + 17 + 37) = 2(60) = 120 . . . . square units

(b) right sum

The right sum is the sum of the last 4 table values for f(x), each multiplied by 2 (the width of the rectangle). This sum is ...

right sum = 2(5 +17 + 37 +65) = 2(124) = 248 . . . . square units

3 0

3 years ago

Is MNO similar to PQO

Oksana_A [137]

Answer:

Yes MNO is similar to PQO

7 0

2 years ago

John kept track of how many baskets were made in a basketball game. After 4 minutes, 5 baskets were made.

ivann1987 [24]

1 basket is between 9 and 10 minutes .

Step-by-step explanation:

Here we have , John kept track of how many baskets were made in a basketball game. After 4 minutes, 5 baskets were made. We need to find How many baskets were made between 9 and 10 minutes . Let's find out:

In order to calculate baskets between 9 min and 10 min we will find baskets at 10 min and at at 9 min , will subtract than !

Baskets at 10 min :

At 4 min we have 5 baskets so , in 10 min

⇒ $(10)\frac{5}{4}$

⇒ $1.25(10)$

⇒ $12.5$

Baskets at 9 min :

At 4 min we have 5 baskets so , in 9 min

⇒ $(9)\frac{5}{4}$

⇒ $1.25(9)$

⇒ $11.25$

So , Baskets between 10 & 9 min is $12.5-11.25=1.25$ , which on rounding off gives 1 . Therefore , 1 basket is between 9 and 10 minutes .

3 0

3 years ago

Violet was carrying around the steps to solve Square root of 3x plus 1 =

Artyom0805 [142]

$\sqrt{3x+1} = 4$
First, square both sides (d.) leaving 3x + 1 = 16
Second, subtract 1 from both sides (a.) leaving 3x = 15
Third, divide by 3 from both sides (e.) leaving x = 5
Answer: First D, then A, then E

7 0

3 years ago