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Anna11 [10]
2 years ago
12

Which of the following is equivalent to 0.000001?

Mathematics
1 answer:
Sergio039 [100]2 years ago
7 0
You didn’t post the options but that is also equal to 1.0 x 10^-6
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Heike runs 800 meters every day. After 9 days, how many kilometers have Heike run?<br> please help.
Nina [5.8K]

Answer:

7.2 Kilometers

Step-by-step explanation:

800 meters = 0.8 kilometers

<u>Therefore, do 0.8 x 9</u>

0.8 x 9 = 7.2 kilometers

8 0
2 years ago
In the diagram below angle AED=(4n-20)° and angle BEC=(2n-16)°. What is the measure of angle CED in degrees
Pavlova-9 [17]

Check the picture below.

so, bearing in mind that vertical angles are equal, thus ∡AED = ∡BEC, and we know that ∡BEC = 52 = ∡AED, so those two angles added up are 104°.

now, a circle has a total of 360°, if we take away those 104° from the red angles, what's leftover is just 256°, well, the green angles there are also vertical angles and thus twins, so each one will take half of 256°.

∡BEA = 128° = ∡CED.

3 0
3 years ago
How do I find angle a?
vfiekz [6]
The slope of the line is 2/3, so the angle is arctan(2/3) ≈ 33.69°.
8 0
3 years ago
Tripp and Rico are two dogs. Tripp weighs exactly 35 pounds more than Rico. Together, they weigh exactly 49 pounds. How much doe
babymother [125]
Call the weights of the two dogs t and r.

We know that Tripp weights 35lbs more than Rico, or:
t=r+35

We also know that the total weight of both dogs is 49lbs.:
t+r=49

Now, by substitution:
(r+35)+r=49
2r+35=49
2r+35-35=49-35
2r=14
r=\frac{14}{2}
r=7
Rico weighs 7lbs.

Then:
t=r+35
t=7+35
t=42
Tripp weighs 42lbs.

To check our work:
t+r=49
42+7=49
49=49  CHECK!
5 0
3 years ago
A can do a piece of work in 4 hours and B can do it in 6 hours. How much time would they take working together to finish the wor
Kipish [7]

Answer:

2.4 hours

Step-by-step explanation:

Let total work = X

Rate of work done = X ÷ time

Rate of A = X/4

Rate of B = X/6

If they work together, rate is the sum of their individual rates, i.e.

X/4 + X/6

= (3X + 2X)/12 (taking LCM)

=5X/12

Rate = X/time

5X/12 = X/time

time = X÷(5X/12)

time = X × 12/(5X)

time = 2.4 hours

Shortcut:

Product of individual times/sum of individual times

= (4×6)/(4+6)

=24/10

=2.4 hours

8 0
3 years ago
Read 2 more answers
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