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2 years ago

6

Decide wether or not if these are functions

1 answer:

lesantik [10]2 years ago

3 0

Answer:

Relation 1: Not a Function

Relation 2: Not a Function

Relation 3: Function

Relation 4: Not a Function

Explanation:

There can only be one output (what you get out of it) for each input (what you put into the function) in a function.

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A scientist measures a substance to be 0.6 grams. Calculate the percent of error in the measurement. Show all work for full cred

Anni [7]

A measurement of 0.6 grams means that the 'true' answer lies between
<span>0.55 and 0.65 </span>

In general, the uncertainty in a single measurement from a single instrument is half the least precise decimal given for the instrument.
The precision for this measurement is in the tenths place.
so we take 0.1 /2 = 0.05, and divide by the measurement

<span>0.05 / 0.6 = 0.08333 = 8.3 %</span>

6 0

3 years ago

Area between two shapes. Pls help geometry IXL !

fenix001 [56]

Step-by-step explanation:

Area of shaded region = area of exterior rectangle - area of interior rectangle

$37 \times 28 - 11 \times 20 \\ \\ = 1,036 - 220 \\ \\ = 816 \: {yards}^{2} \\$

4 0

2 years ago

Read 2 more answers

The Johnson twins were born nine years after their older sister. This year, the product of the three siblings ages is exactly 18

KATRIN_1 [288]

Answer: The age of the twins is 10 years.

Step-by-step explanation:

Suppose the age of older sister be x

Let the age of twins sister be x-9, as they are born after 9 years.

Product of their ages be

$x(x-9)(x-9)\\\\=x(x^2-18x+81)\\\\=x^3-18x^2+81x$

Sum of their ages will be

$x+x-9+x-9\\\\=3x-18$

According to question,

$1861+3x-18=x^3-18x^2+81x\\\\x^3-18x^2+81x-3x+18-1861=0\\\\x^3-18x^2+78x-1843=0\\\\x=19$

So, Age of older sister will be 19 years.

Age of the twins will be

$19-9=10\ years$

Hence, the age of the twins is 10 years.

3 0

3 years ago

Figure ABCD is a parallelogram. What is the value of n?

Zigmanuir [339]

Answer

Find out the what is the value of n.

To prove

By using the parallelogram property .

In parallelogram opposite angels are congruent .

As shown in the figure .

∠B = ∠ D

As given

∠B = (2n + 32)°

∠D = (4n - 2)°

(2n + 32) = (4n - 2)

solving the above

4n -2n = 32 +2

2n = 34

$n = \frac{34}{2}$

n = 17

Therefore the value of n is 17 .

5 0

2 years ago

Read 2 more answers

Please help asap, shehhrhd

Dovator [93]

Answer:

55°

Step-by-step explanation:

y+x=180°

25°+30°+x=180°

25°+30°=y

y=55°

*Exterior Angle Theorem*

<u><em>Sorry for the lack of explanation. It's midnight, so I didn't have much time.</em></u>

7 0

2 years ago