2 years ago

All of the following are useful in scientific investigations EXCEPT:

Mathematics

1 answer:

katrin2010 [14]2 years ago

8 0

Answer:

Assumptions and bias

Step-by-step explanation:

Creativity and imagination is also not, but assumptions and bias ruin your investigation.

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Complete the statement. Is 2.09 greater than or less than 2.1

AveGali [126]

Answer:

2.09 is less than 2.1

Step-by-step explanation:

2.1 is the same as 2.10

so 2.10 is greater than 2.09.

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3 years ago

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If B is the midpoint of AC and AB = 4x + 14 and BC = x + 20, determine how long AC is.

Serhud [2]

Answer:

44 units

Step-by-step explanation:

Since B is the mid-point of AC

AB=BC

or,4x+14=x+20

or, 4x-x=20-14

or 3x=6

or,x=6/3=2

AC=AB+BC

= 4x+14+x+20

= 4(2) + 14 +2 +20

= 8+14+22

=44 units

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3 years ago

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Please and thank you

KatRina [158]

Answer:

$\huge\boxed{\sf x = 4}$

Step-by-step explanation:

If the given polygon is a regular polygon, its sides are equal.

This means:

$x^2+4=x^2+x$

Subtract $x^2$ to both sides

4 = x

x = 4

$\rule[225]{225}{2}$

Hope this helped!

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2 years ago

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You're a 7th grade math teacher and you want to create an experiment for your class with red, yellow and purple marbles in the b

andreyandreev [35.5K]

630 red marbles

420 yellow marbles

210 purple marbles

because 1260 x 1/2 = 630, 1260 x 1/3 = 420, 1260 x 1/6 = 210

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3 years ago

A student builds a model of a race car. The scale is 1:15 in the scale model,the car is 8cm tall. How tall is the actual car?

ycow [4]

Answer: 120cm

Step-by-step explanation i took the test

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2 years ago