3 years ago

Subtract -3n^2 from -7n^2

1 answer:

5 0

Answer: 4n^2

Step-by-step explanation: -3n^2 - (-7n^2) = -3n^2 + 7n^2= 4n^2. When adding and subtracting the exponents stay the same only the coefficients are subtracted or added

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Volume=<br> A) 91 2/3 pie cubic units <br> B) 275 pie cubic units <br> C) 36 2/3 pie cubic units

MrMuchimi

the volume is 1/3 * height *area of the base (the circle) in cubic units

the area of the circle is pi*r²

wich gives us

1/3 * 11 * pi * 5²

rearrange

= 5² * 11 * 1/3 * pi

= 25*11*1/3*pi

= 275*1/3*pi

= 275/3 *pi

= (91 2/3)*pi

in cubic units

so your answer is the first option

6 0

3 years ago

Calculate s26 for the arithmetic sequence in which a14=4.1 and the common difference is d=1.7

sweet-ann [11.9K]

Answer:

The value of $s_{26}=84.5$

Step-by-step explanation:

We have given $a_{14}=4.1$

d=1.7

We have to find $s_{26}$

So, $a_{14}=a+13d$ from the formula

$a_n=a+(n-1)d$

When n=14

$a_{14}=a+(14-1)(1.7)=a+13(1.7)$

$4.1=a+22.1$

$-18=a$

$a=-18$

Using the formula:

$s_n=\frac{n}{2}[2a+(n-1)d$

When n=26

$s_{26}=\frac{26}{2}[2(-18)+(26-1)(1.7)]$

On simplification we get:

$s_{26}=84.5$

8 0

3 years ago

I need to know what the answer to this because I’m failing

Dafna1 [17]

Answer:

Step-by-step explanation: 12:3=4, 4 x 2= 8

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3 years ago

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lidiya [134]

Answer: Yes

Step-by-step explanation:

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3 years ago

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Choose the graph which represents the solution to the inequality:<br> 3x + 8 ≥ 11

Ede4ka [16]

Answer:

X>=1 is the answer

Step-by-step explanation:

then

The graphic is A) or whom is be more or equal to one in the graphic. Right side of the graphic.

Best regards

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3 years ago

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