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4 years ago

Answer the photo please

Mathematics

1 answer:

alexandr402 [8]4 years ago

7 0

Answer:

66.666666666667% error

Step-by-step explanation:

Percent Error = Vobserved - Vtrue / Vtrue

= 9 - 27 / 27

= -18/27

= -66.666666666667%

= 66.666666666667% error

I hope this helps!

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Sandra runs A new personal best in the hundred meter dash her average speed is 7.4 m/s how long to the nearest hundredth does it

ozzi

Answer:

$13.51\ \text{s}$

Step-by-step explanation:

$s$ = Average speed of Sandra = $7.4\ \text{m/s}$

$d$ = Distance Sandra ran = $100\ \text{m}$

Time is given by

$t=\dfrac{d}{s}$

$\Rightarrow t=\dfrac{100}{7.4}$

$\Rightarrow t=13.51\ \text{s}$

The time it takes Sandra to run the given distance is $13.51\ \text{s}$ .

6 0

3 years ago

Origami is the Japanese art of paper folding. The diagram below represents an unfolded paper kabuto, a samurai warrior's helmet.

Fed [463]

Option (B) FR and NR, option (C) NO and NM, and option (D) RC and RO are correct.

<h3>What is congruence in geometry?</h3>

The measurements of the sides and angles of two or more geometrical figures determine their congruence. For example triangle's size is determined by its three sides, and its shape is determined by its three angles.

We have:

The diagram represents an unfolded paper kabuto, a samurai warrior's helmet.

Unfolded paper can be seen in the provided figure. The sheet is square.

The diagonals, in this case, are FN and AK, and the midline is CM and OI. At point R, all of these lines converge.

FR ≅ NR

AO ≅ ON

RC ≅ RO

NO ≅ NM

DV ≅ HV

Thus, option (B) FR and NR, option (C) NO and NM, and option (D) RC and RO are correct.

Learn more about the congruence here:

brainly.com/question/20521780

#SPJ1

4 0

2 years ago

Why do the kindergartener take her books to the zoo?

SpyIntel [72]

Probably because their teacher asked them or if they did something bad they would probably have to sit and read.

5 0

3 years ago

Extremely Easy Math!!! 50 Points!!! BRAINLIEST!!!

N76 [4]

Answer:

x = 40

Step-by-step explanation:

If you add the total of 3 angles in a STRAIGHT line, you have to get 180 in total.

So, x = 180 - ( 80 + 60 )

= 180 - 140

= 40

4 0

3 years ago

The patient recovery time from a particular surgical procedure is normally distributed with a mean of 5.9 days and a standard de

FrozenT [24]

The 70th percentile is the same as the cutoff recovery time $t$ such that every point above this time falls in the longest 30%, i.e.

$\mathbb P(X>t)=0.30$

Transform to the standard normal distribution:

$\mathbb P\left(\dfrac{X-5.9}{2.5}>\dfrac{t-5.9}{2.5}\right)=\mathbb P(Z>t^*)$

where $t^*$ is the z-score corresponding to the cutoff time $t$ , which is approximately $t^*\approx0.5244$ . Solve for $t$ :

$t^*\approx0.5244=\dfrac{t-5.9}{2.5}\implies t\approx7.21\text{ days}$

6 0

4 years ago