3 years ago

Write a number pattern for 8 starfish if each had 5 arms?

Mathematics

1 answer:

Musya8 [376]3 years ago

6 0

That will be 40 because the problem is making you multiple

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Use the exponential regression equation that best fits the data (10,4). (12,20), (13,35), and (16,300) to estimate y when x = 15

Aleonysh [2.5K]

Answer:

tbh idc

Step-by-step explanation:

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3 years ago

What is the simplest form of 5(x-30-3/9(2x+4)

Alex17521 [72]

Answer:

10x^2 -276.67x - 593.34

Step-by-step explanation:

is it like that ?

5(x-30-3/9)(2x+4)

(5x- 148.335)(2x+4)

10x^2 -296.67x +20x -593.34

10x^2 -276.67x - 593.34

3 0

3 years ago

Please help

RoseWind [281]

Substitute.
r – 2s ⇒ 8.2- 2* -3.7
$8.2-2*-3.7 \\ use -pemdas \\ 8.2-(-7.4) \\ 15.6 \\ Answer- D.15.6$

8 0

3 years ago

In a sample of 77 children , the mean age as at which they first began to combine words was 16.51 months

astraxan [27]

Answer:

Mean age = 1271.27

Step-by-step explanation:

No of children = 77

The age at which children first began to combine words = 16.51 months

Mean age = No of children × age at which children first began to combine words

= 77 × 16.51

= 1271.27

Mean age = 1271.27

7 0

3 years ago

Grace and Zoe like to jump rope grades jump 66 times a minute Zoe jumps 56 times a minute they both Count Their jumps today and

san4es73 [151]

Answer:

Grace jumps for 9 minutes.

Zoe jumps for 12 minutes.

Step-by-step explanation:

Let the time for which Grace jumps the rope = $x$ minutes

Let the time for which Zoe jumps the rope = $y$ minutes

As per question statement:

$x+y=21 ..... (1)$

Number of times Grace jumps in one minute = 66

Number of times Zoe jumps in one minute = 56

Number of times Grace jumps in $x$ minutes = 66

Number of times Zoe jumps in $y$ minutes = 56

As per question statement:

$66x+56y=1266 ...... (2)$

Multiplying equation (1) with 66 and subtracting equation (2) from it:

$10y = 1386 - 1266\\\Rightarrow 10y=120\\\Rightarrow y =\bold{12\ min}$

By equation (1):

$x=21-12=\bold{9\ min}$

Therefore, the answer is:

Grace jumps for 9 minutes.

Zoe jumps for 12 minutes.

5 0

3 years ago