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ElenaW [278]
2 years ago
7

1 tenth + 2 tenths Write the sum in standard form ​

Mathematics
2 answers:
sweet [91]2 years ago
6 0

Answer:

3/10 is equal to 0.3. Write the number without the decimal, which would be 3. Write “x 10^-1” following the 3, because the decimal is one position to the left of the 3. The full answer would appear as “3 x 10^-1.”

Step-by-step explanation:

Im the guy from ear;ier please give me brainliest i need 1 pleaseeeeeeeeeeeeeeeeeeeeeeee

cluponka [151]2 years ago
4 0

Answer:

3 Tenths / 0.3

Step-by-step explanation:

you add 1+2 and get 3 then to put it in standard from you put the 3 in your tenths place in your decimal and a 0 in front of your point

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How do you write this quadratic equation using substitution
Arlecino [84]

Answer:

u^2 +7u -8=0  where u = 3x+2

Step-by-step explanation:

(3x+2)^2 + 7(3x+2) - 8=0

Let 3x+2 = u

u^2 +7u -8=0

7 0
2 years ago
Read 2 more answers
When a particular mass-spring system is started by stretching the spring 3 cm, one complete oscillation takes 4 seconds.
11Alexandr11 [23.1K]

Answer:

A. 5.16 s.

B. 5.66 s.

Step-by-step explanation:

A.

For a simple harmonic motion,

T = 2pi (sqrt * (l/g))

Given:

L1 = 3 cm

T1 = 4 s

L2 = 5 cm

T2 = ?

4 = 2pi*sqrt(3/g)

g = 7.4

At, L2,

T2 = 2pi*sqrt(5/7.4)

= 5.16 s.

B.

M1 = M1

M2 = 2*M1

For a simple harmonic motion,

T = 2pi (sqrt * (m/k))

4 = 2pi (sqrt * (M1/k))

M1/k = 0.405

Inputting the above values,

T2 = 2pi (sqrt * (2*M1/k))

= 2pi (sqrt * (2 * 0.405))

= 5.66 s.

4 0
2 years ago
(2a)3 = _____<br><br> This expression without exponents is?
Natalka [10]
<span>(2a)^3 =8a^3

hope it helps</span>
4 0
3 years ago
Read 2 more answers
The arithmetic sequence a_ia
topjm [15]

Answer:

492,800

Step-by-step explanation:

Given ith term of an arithmetic sequence as shown:

ai = a(i-1)+2

and a1 = 5

When i = 2

a2 = a(2-1)+2

a2 = a1+2

a2 = 5+2

a2 = 7

When i = 3

a3 = a(3-1)+2

a3 = a2+2

a3 = 7+2

a3 = 9

It can be seen that a1, a2 and a3 forms an arithmetic progression

5,7,9...

Given first term a1 = 5

Common difference d = 7-5= 9-7 = 2

To calculate the sum of the first 700 of the sequence, we will use the formula for finding the sum of an arithmetic sequence.

Sn = n/2{2a1+(n-1)d}

Given n = 700

S700 = 700/2{2(5)+(700-1)2}

S700 = 350{10+699(2)}

S700 = 350{10+1398}

S700 = 350×1408

S700 = 492,800

Therefore, the sum of the first 700 terms in the sequence is 492,800

3 0
3 years ago
|-1.43| - 7.1 + |-1.21| answer please
stellarik [79]

Hello.

Numbers with | | around them are the absolute value, meaning it is always positive.

|-1.43| and |-1.21| become 1.43 and 1.21

The equation is now 1.43 - 7.1 + 1.21

Solve.

1.43 - 7.1 + 1.21

-5.67 + 1.21

-4.46

-4.46 is the final answer.

8 0
3 years ago
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