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erastovalidia [21]
3 years ago
14

Change 61.5 km into metres.

Mathematics
2 answers:
Alinara [238K]3 years ago
6 0

Answer:

61500m

Step-by-step explanation:

To convert km into m, multiply by 1000

Westkost [7]3 years ago
5 0

Answer:

61500metres.

hope it helps.

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Compute the value of the discriminant and give the number of real solutions of the quadratic equation. -4x^2+3x+1=0
Oksanka [162]
<span>-4x^2+3x+1=0
D = b</span>² - 4ac = 3² - 4 * (-4) * 1 = 9 + 16 = 25
D>0  ⇒ <span>this equation has two solutions.</span>
5 0
3 years ago
80 is 5% of what number?​
nikklg [1K]

Answer:

1600

Step-by-step explanation:

1600 x 0.05 = 80

or

80 / .05 = 1600

3 0
2 years ago
Read 2 more answers
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inn [45]

Answer:

229?

Step-by-step explanation:

7 0
2 years ago
How many terms are in the arithmetic sequence shown below?<br>15, 7, -1, -9...,-225
NemiM [27]
We know that

We can write an Arithmetic Sequence as a rule:

<span>an = a1 + d(n−1)</span>

where

<span>a1 = the first term
<span>d =the "common difference" between terms

in this problem
a1=15  a2=7  a3=-1  a4=-9  .....    an=-225
d=a2-a1  
d=7-15-----> d=-8

</span></span>an = a1 + d(n−1)
for
an=-225
d=-8
a1=15
find n
-225=15+(-8)*(n-1)--> (n-1)=[-225-15]/-8----> n-1=30---> n=30+1---> n=31

the answer is
31

3 0
3 years ago
What is the number three and eight tenths as a decimal.
natali 33 [55]

Answer:

3.8

Step-by-step explanation:

3 8/10 can be written as 3.xx because all we have to do is 8 divided by 10 which equals .8 so 3+.8=3.8

7 0
2 years ago
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