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Margaret [11]
3 years ago
15

Use the Associative Property to generate an expression equivalent to 23 + (7 + 18)

Mathematics
1 answer:
PSYCHO15rus [73]3 years ago
6 0

Answer:

(23+7)+18

Step-by-step explanation:

............

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Given f(x) = 2x2+3 fins f(-3)
artcher [175]

I'm assuming that you are given the equation f(x) = 2x^2 + 3 and the value f(-3).

To find this, all you need to do is plug in the value of -3 in f(x) for all x values. It would look like:

f(x) = 2(-3)^{2}  + 3

All you need to do is simplify:

f(x) = 2(9) + 3

f(x) = 18 + 3

f(x) = 21

Your final answer is f(x) = 21.

6 0
3 years ago
A cylindrical metal pipe has external diameter of 6cm and internal diameter of 4cm. Calculate the volume of metal in a pipe of l
ArbitrLikvidat [17]

Answer:

volume is 1570 cm³

mass is 12560 g

Step-by-step explanation:

1m = 100 cm

the volume is :

1/4 x \pi x 6² x 100 - 1/4 x \pi x 4² x 100

= 900 \pi - 400 \pi              { v = 1/4 \pi d²h }

= 500 \pi

= 500 x 3.14

= 1570 cm³

the mass of the pipe is:

1570 x 8 = 12560 grams

5 0
2 years ago
Use the diagram what can be said about angle 7 and 12?
balandron [24]
They are congruent angles
3 0
3 years ago
How do I do this?? 7-11
mihalych1998 [28]

Answer: slope intercept is y=mx+b form s b= the y intercept and x will just be x and the m is usually a fraction which tells you the slope so what you need to do is mark these points on a line graph draw a line from one to the other and every where it crosses over a point is where you can find the slope and the y intercept giving you the answer



7 0
4 years ago
Find the unit rate 6 and 2/5 revolutions in 2 and 2/3 in seconds
Makovka662 [10]

<u>Step 1</u>

Convert mixed fractions into fractions

6 2/5 = (6*5)+2) / 5 = 32/5

2 2/3 = (2*3)+2) / 3 = 8/3

<u>Step 2</u>

32/5 ÷ 8 / 3 ; where 32/5 is the 1st fraction and 8/3 is the 2nd fraction

<u>Step 2 (A)</u>

Get the reciprocal of the 2nd fraction:

From 8/3 to 3/8

<u>Step 2 (B)</u>

Multiply 1st fraction to the reciprocal of the 2nd fraction

32/5 * 3/8 = (32*3) / (5*8) = 96/40

<u>Step 2 (C)</u>

Simplify the fraction

96/40 divide by 4 will become 24/10

24/10 divide 2 will become 12/5. The simplest fraction of 96/40

The unit rate is 12/5 = 2 2/5 revolutions per second

3 0
3 years ago
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