All categories

3 years ago

Write the following number in standard form: 3.471 × 10^−5

Mathematics

1 answer:

muminat3 years ago

4 0

0.00003471 is the correct answer I believe

You might be interested in

Given: △ABC, AB=5 sqrt 2 m∠A=45°, m∠C=30° Find: BC and AC will give brainliest!!! By the way the answer is not 5 and 3.66

Makovka662 [10]

Answer:

Therefore,

$BC=a=10\ units\\\\AC=b=13.66\ units$

Step-by-step explanation:

Consider a Δ ABC with

m∠ A = 45°

m∠ C = 30°

AB = c = 5√2

To Find:

BC = a = ?

AC = c = ?

Solution:

Triangle sum property:

In a Triangle sum of the measures of all the angles of a triangle is 180°.

$\angle A+\angle B+\angle C=180\\\\45+30+\angle B=180\\\ttherefore m\angle B =180-75=105\°$

We know in a Triangle Sine Rule Says that,

In Δ ABC,

$\frac{a}{\sin A}= \frac{b}{\sin B}= \frac{c}{\sin C}$

substituting the given values we get

$\frac{a}{\sin 45}= \frac{b}{\sin 105}= \frac{5\sqrt{2} }{\sin 30}$

∴ $\frac{a}{\sin 45}= \frac{5\sqrt{2} }{\sin 30}\\\\a=\sin 45\times \frac{5\sqrt{2} }{\sin 30}\\\\a=\frac{1}{\sqrt{2} }\times \frac{5\sqrt{2} }{0.5} \\\\\\a=\frac{5}{0.5} =10\\\therefore BC = a = 10\ units$

Similarly for 'b',

$\frac{b}{\sin 105}= \frac{5\sqrt{2} }{\sin 30}\\\frac{b}{0.9659}= \frac{5\sqrt{2} }{0.5}\\\\b=0.9659\times \frac{5\sqrt{2} }{0.5}\\\\b=\frac{6.8301}{0.5} \\\\b=13.66\\\therefore AC = b =13.66\ units\\$

Therefore,

$BC=a=10\ units\\\\AC=b=13.66\ units$

8 0

3 years ago

The table shows the grades that science students earned on the last test. a:17 b:25 c:24 d:12 f:2 What percent of students recei

Molodets [167]

Answer:

0.525 %

Step-by-step explanation:

there is a total of 80 students and 42 received a A or B so 42/80 = 0.525

Hope this helps!

8 0

4 years ago

Ms jiang cut a string into 16 equal pieces if the lenght of each piece was exactly 7.3 inches long what was the original lenght

Klio2033 [76]

let X equal initial string length

X / 16 = 7.3

X = 7.3 * 16

X = 116.8

3 0

4 years ago

What is 12.1167 rounded to the nearest hundredth?

Anastaziya [24]

12.12 <span> </span>

4 0

3 years ago

VerZion sells the iPhone X for $899. If the monthly plan for service is $65 per month what is the linear equation for the cost o

geniusboy [140]

899$ is the y intercept because that is your starting value. Then, 65 is your slope. (Rise 65, run 1). After 24 months, the total cost will be 2459$. This is because 24 • 65 = 1560. This is your total cost of phone service. Then, you need to add the phone. 1560 + 899 = 2459. So you total cost is 2459.

5 0

3 years ago