3 years ago

1 5⁄7 ÷ 4 2⁄7 i need the anser im stuck

2 answers:

6 0

The answer is 2/5. You need to make each fraction a improper fraction, and then flip the fraction on the right in order to multiply it.

1 5/7 ÷ 4 2/7
12/7 ÷ 30/7
12/7 × 7/30
12/30
2/5

leonid [27]3 years ago

4 0

15/7 divides by 42/7 equals 357/1000 or .357

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If a circle has a circumference of 38cm what is it’s radius to 0.1cm?

ira [324]

Answer:6.05cm

Step-by-step explanation:

Circumference=2×π×r

38=2×22/7×r

38×7=2×22×r

266=44r

r=266/44

r=6.05cm

8 0

3 years ago

Standard deviation of 300, 785, 670, 187, 760, 724

White raven [17]

STEP 1

Mean = $\frac{300+785+670+187+760+724}{6} = \frac{3426}{6}=571$

STEP 2

Subtract the mean from each data value then square the answer
$300-571=-271$ ⇒ $(-271)^{2} =73441$
$785-571=214$ ⇒ $(214)^{2}=45796$
$670-571=99$ ⇒ $(99)^{2}=9801$
$187-571=-384$ ⇒ $(-384)^{2} =147456$
$760-571=189$ ⇒ $189^{2}=35721$
$724-571=153$ ⇒ $153^{2} =23409$

STEP 3

Add the squared answers in STEP 2 then find the mean

$\frac{73441+45796+9801+147456+35721+23409}{6}= \frac{335624}{6}=55937.3$

STEP 4

Square root the answer in STEP 3
$\sqrt{55937.3} =236.5$

Standard deviation is 236.5

7 0

3 years ago

3 divided by the sum of x and 9

Leto [7]

Answer:3/9

Step-by-step explanation:

5 0

3 years ago

What is the surface area of the rectangular prism formed from this net?

Reika [66]

E is the answer to this question

6 0

3 years ago

Need help please

zlopas [31]

Answer:

Step-by-step explanation:

6x5=30

30x2/3=20

8 0

1 year ago