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Otrada [13]
3 years ago
13

Evaluate the expression r3 + 4r2 s for r = – 3 and s = 2.

Mathematics
1 answer:
denpristay [2]3 years ago
6 0

Answer:

Sorry if I did wrong..I tried my best

Step-by-step explanation:

-3×3+4×-3×2

-9-12×2

-21×2

-42 ans

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10) Solve using any method<br> 10x+2y=42<br> 5x+y=20
KIM [24]

Answer:

no solutions

Step-by-step explanation:

10x+2y=42

5x+y=20

Multiply the second equation by -2 to use elimination

-2(5x+y)=20*-2

-10x -2y = -40

Add this to the first equation

10x+2y=42

-10x -2y = -40

--------------------------

0 = 2

This is never true.  This means there are no solutions

3 0
3 years ago
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Andrew is flying a kite held by 175 meters of string that makes an angle of elevation with the ground of 40. Emma is standing di
Alja [10]

Answer:

x=134.05m

Step-by-step explanation:

From the question we are told that:

Slant Height of Kite h_s=175

Angle \theta=40 \textdegree

Since Emma,The Kite and Andrew forms a right angle triangle

Generally the equation for distance between Andrew from Emma is mathematically given by

 x=h_scos\theta

 x=175cos40

 x=134.05m

8 0
3 years ago
GEOMETRY!! I will give brainliest
Nadusha1986 [10]
No. AB is not perpendicular to AC
7 0
3 years ago
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What is the expression for "the sum of 8 times a number and two"?
LiRa [457]

Answer:

8 N + 2

Step-by-step explanation:

==> 8 N + 2

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8 0
2 years ago
Match the mean median mode and range for the data set below 16 9 20 10 12 6 8 15
blsea [12.9K]

Answer:

12 is mean     11 is median     range is 14

Step-by-step explanation:

For the Mean

Add all the numbers up

16 + 9 + 20 + 10 =55

12 + 6 + 8 + 15 = 41

55 + 41 = 96

There are 8 numbers so we divide by 8

96/8 = 12

Range is Smallest number minus biggest so 20 - 6 = 14

6 0
4 years ago
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