Write the number 31 in tens and ones

Answers

Answer 1

Answer: 10 + 10 + 10 + 1
or
1 +1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1
;)

The tens digit is 3. There are three of these which makes it to 30. Also, the ones digit of this number is equal to 1. The answer to this item are therefore 30 and 1.

Hope this helps!

Answer 2

Answer: tens is 310.000 and ones is 31.000 I think hope it helps

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Given: 44 - 2(3x + 4) = -18Prove: x = 9
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What is the slope of the line that passes through the points E(5, 1) and F(2, 7)? A) 8/3
B) 3/8
C) -3/8
D) -8/3

Answers

Answer:

I would say it's B(3/8)

Answer:

7 - 1/2 - 5 = 6/-3 = -2

Step-by-step explanation:

None of those answers are correct the answer is -2

The sum of three consecutive multiples of 4 is 444. Find these multiples.

Answers

Step-by-step explanation:

Let the first multiple of 4 be x and second multiple be (x + 4) and third multiple be (x + 8) ...[Since, the number are consecutive multiple of 4]

☯ $\underline{\boldsymbol{According\: to \:the\: Question\:now :}}\n$

$:\implies \sf x \: + \: x \: + \: 4 \: + \: x \: + \: 8 \: = \: 444 \n \n \n$

$:\implies \sf 3x \: + \: 12 \: = \: 444 \n \n \n$

$:\implies \sf 3x \: = \: 444 \: - \: 12 \n \n \n$

$:\implies \sf 3x \: = \: 432 \n \n \n$

$:\implies \sf x \: = \: (432)/(3) \n \n \n$

$:\implies\underline{ \boxed{\sf x \: = \: 144}} \n$

_________________

Therefore,

$\bullet\:\:\textsf{First multiple of 4 = x = \textbf{144}} \n$

$\bullet\:\:\textsf{Second multiple of 4 = x + 4 = 144 + 4 = \textbf{148}} \n$

$\bullet\:\:\textsf{Third multiple of 4 = x + 8 = 144 + 8 = \textbf{152}}$

First multiple of 4 is x = 144

Second multiple of 4 is x + 4 = 144 + 4 = 148

Third multiple of 4 is x + 8 = 144 + 8 = 152

Find the volume, I really need help, thank you!!

Answers

the area of the base
$(4 * 6) / 2 = 24 / 2 = 12$

the volume
$12 * 6 = 72$

the answer is 72 in^3

good luck

How does 3.71 round up to 3.7

Answers

Answer:

Step-by-step explanation:

cuz 7 is greater then 5

Which of the following expressions are equivalent to - -a/b

Answers

Answer:

B) $-(a)/(-b)$

Step-by-step explanation:

1. First, we have to know that two negatives equal positive.

2. Given the information above, $-(-a)/(b)$ can simplify to $(a)/(b)$ .

3. Let's go through each answer choice and see which one also simplifies to $(a)/(b)$ .

$(a)/(-b)$
$-(a)/(b)$

$-(a)/(-b)$
$(a)/(b)$

Therefore, the answer is B) $-(a)/(-b)$ .

The recommended dietary allowance (RDA) of iron for adult females is 18 milligrams (mg) per day. The given iron intakes (mg) were obtained for 45 random adult females. At the 10% significance level, do the data suggest that adult females are, on average, getting less than the RDA of 18 mg of iron? Assume that the population standard deviation is 4.2 mg. Preliminary data analyses indicate that applying the z-test is reasonable. (Note: x bar equals=14.65 mg.)1. State the hypotheses for the one-mean z-test.
2. Compute the value of the test statistic. z=______
3. Determine the critical value(s).
4._________ the null hypothesis. At the 10% significance level, the data____________sufficient evidence to conclude that adult females are ___________ the RDA of iron, on average.

Answers

Answer:

Step-by-step explanation:

Given that the recommended dietary allowance (RDA) of iron for adult females is 18 milligrams (mg) per day. The given iron intakes (mg) were obtained for 45 random adult females.

$n =45\n\bar x = 14.65\n\sigma = 4.2\nstd error = (4.2)/(√(45) ) \n=0.6261$

1) $H_0: \bar x =18\nH_a: \bar x <18$

(left tailed test at 10% sigl level)

Mean difference = -3.35

2) Test statistic Z = Mean difference/std error =-5.35

3) Critical values are -1.28

Since critical value is > test statistic accept H0

4) ___Fail to reject______ the null hypothesis. At the 10% significance level, the data_____shows_______sufficient evidence to conclude that adult females are ____equal to 18 mg_______ the RDA of iron, on average.

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