Chose all the shapes that have opposite sides the same length

Answer:

35

Step-by-step explanation:

let x be the number of students in the class

then number of girls = 0.4x , so

x = 21 + 0.4x ( subtract 0.4x from both sides )

0.6x = 21 ( divide both sides by 0.6 )

x = 35

the total number of students is 35

Answer:

6

Step-by-step explanation:

STATISTICS" is the 10 letters word in which "S" appears 3 times, "T" appears 3 times, "A" appears 1 time, "I" appears 2 times and "C" appears 1 times. To arrange this word letter "T" must be first letter so there is only one way to choose first place. Since vowel can not be the last letter there are 6 choices...

Answer:

The answer is in Step-by-step explanation

Step-by-step explanation:

x,y,z (-3, 3/2, 2

Hope this helps!!

Answer:

Step-by-step explanation:

[tex]\frac{14}{7} =\frac{n}{21}[/tex]

Let us divide by 14 by 7 which is 2, so the equation is:

[tex]2 = \frac{n}{21}[/tex]

Let us multiple 21 over the other side since 21 is in the denominator of the equation, so we get

[tex]n = 21*2 = 42[/tex]

So the answer is 42.

Answer:

1..75c

Step-by-step explanation:

Answer:

  1/4 cup

Step-by-step explanation:

To make half a recipe, each of the quantities in the recipe must be multiplied by 1/2. Alvin will need ...

  (1/2) × (1/2 cup) = 1/4 cup

of bread crumbs.

Answer:

No becasue she only has 22 yard and the total she needs is more than 23 yards

Answer:

I believe it is 5 < √32 < 6.

Step-by-step explanation:

√25 = 5 and √36 = 6 so therefore, the answer is 5 < √32 <  6. I hope I helped! ^-^

Answer:

-2/5 , -7/13 , 7/11 , 5/84

1. The answer would be "-15" since integers are composed of whole numbers and negatives.

2. The statement "Every real number is a rational number." is false, since real numbers are composed of both rational and irrational numbers.

3. The number "8.52624 . . ." because this is the only non-terminating number, which makes it the only irrational number on the list.

4. "Irrational numbers cannot be classified as rational numbers." is the only correct statement. No irrational numbers can be rational numbers, and the opposite is also true.

5. Only the statement "Every irrational number is a real number." is true.

i hope this work for you

Answer:

Most likely wrong but i thinkkk C

Step-by-step explanation:

The sum of the sequence is 300

Given the sum of sequence;

∑n=(5n−7)

We are to get the sum of the sequence from n = 1 to n = 24

The formula for calculating the sum of the sequence is expressed as:

Sn = n/2(a+l)

Given the following parameters

a = 1

l = 24

n = 24

S24 = 24/2(1 + 24)

S24 = 12(25)
S24 = 300

Hence the sum of the sequence is 300

Learn more on sum of sequence here: https://brainly.com/question/18494472

Answer:

1332

Step-by-step explanation:

Answer:

c)

6.1 x 5 = 30.5

6.1 + 12.9 = 19

19/2 = 9.5

9.5 x 10= 95

95 + 30.5 = 125.5 cm squared

d) 4.1 x 4.7 = 19.27

2.05 squared x pi = 13.5

13.5 /2 = 6.6

19.27 + 6.6 = 25.87 cm squared

e) 16 x 22 = 352

352/2= 176

pi x 11 squared = 95.03

95.03+176 = 271.03 cm squared

f) 8 x 8 =64

pi x 4 squared= 50.27

50.27 x 3 = 150.81

150.81 + 64 = 214.81cm squared

Answer:

500$

Step-by-step explanation:

Answer:

Slope: -1/3

Y-int: 1

Answer:

im pretty sure its distributive property

Step-by-step explanation:

Answer:

highest umber is correct answer

Answer:

1.24.24

2.=579.67

3.72.5

4.808.95

5.104

6.433.14

Step-by-step explanation:

Answer:

Figure 1 does not have perimeter 8x +8

Step-by-step explanation:

Perimeter of  shape is the sum of all the sides.

Perimeter of figure 1 = 2x +2 + x + 2x + 2 +x

                                  = 2x + 2x + x + x + 2 + 2   {Combine like terms}

                                  =6x + 4

Answer:

1 / 3 (one third)

Step-by-step explanation:

Divide the number of chickens by the number of people:

1 / 3

Answer:

the slope is 3

Step-by-step explanation:

soo we just have to use the equation y2 - y1/ x2 - x1 to find the slope

-4 - 2/ -1 - 1

-6 / -2

3

Using the normal distribution, it is found that:

a) The cutoff time for the fastest 5% of athletes in the men's group is of 3448.58.

b) The cutoff time for the slowest 10% of athletes in the women's group is of 6298.72.

In a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

Item a:

For men, we have that [tex]\mu = 4378, \sigma = 565[/tex].

The cutoff for the fastest 5% of the athletes is the 5th percentile, which is X when Z has a p-value of 0.05, that is, X when Z = -1.645.

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]-1.645 = \frac{X - 4378}{565}[/tex]

[tex]X - 4378 = -1.645(565)[/tex]

[tex]X = 3448.58[/tex]

The cutoff time for the fastest 5% of athletes in the men's group is of 3448.58.

Item b:

For women, we have that [tex]\mu = 5212, \sigma = 849[/tex].

The cutoff is the 90th percentile, which is X when Z = 1.28, hence:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]1.28 = \frac{X - 5212}{849}[/tex]

[tex]X - 5212 = 1.28(849)[/tex]

[tex]X = 6298.72[/tex]

The cutoff time for the slowest 10% of athletes in the women's group is of 6298.72.

More can be learned about the normal distribution at https://brainly.com/question/24663213

Answer:

(a) dp/dx = 90/(x+2)

(b) $2.25

(c) approx = $2.25

    exact = $2.22

Step-by-step explanation:

[tex]p = 20 + 90 \ln(2x + 4)[/tex]

(a) To find the rate of change, differentiate [tex]p[/tex] with respect to [tex]x[/tex] :

[tex]\implies \frac{d}{dx}(p) = \frac{d}{dx}(20) + \frac{d}{dx}(90 \ln(2x + 4))[/tex]

[tex]\implies \frac{dp}{dx}=0+90\times\dfrac{1}{2x+4}\times2[/tex]

[tex]\implies \frac{dp}{dx}=\dfrac{180}{2x+4}[/tex]

[tex]\implies \frac{dp}{dx}=\dfrac{90}{x+2}[/tex]

(b)  Find  [tex]\frac{dp}{dx}[/tex]  when [tex]x=38[/tex] :

[tex]\implies \frac{dp}{dx}=\dfrac{90}{38+2}[/tex]

[tex]\implies \frac{dp}{dx}=\dfrac{90}{40}[/tex]

[tex]\implies \frac{dp}{dx}=2.25[/tex]

(c)  Approximate price increase associated with the number of units supplied changing from 38 to 39 is  [tex]\frac{dp}{dx}[/tex]  when [tex]x=38[/tex]

[tex]\implies \$2.25[/tex]

Exact price increase:

[tex]\implies \left. p \right_{x=39}-\left. p \right_{x=38}\\\\\implies [20 + 90 \ln(2 \times 39 + 4)]-[20 + 90 \ln(2\times38 + 4)]\\\\\implies 416.6047323...-414.3823972...\\\\\implies 2.222335133...\\\\\implies \$2.22[/tex]

Answer:

The answer is 10.25

Step-by-step explanation:

They want the approximate average ring size between the men, the lowest being 9 and the highest 12.

The average between those two numbers would be 10.5

But the said 'the best approximation'

So it's 10.25

Answer:

10 cups of flour

Step-by-step explanation:

Ratios tell you how much of one thing there are compared to another.

It is stated that the ratio of water to flour is 1:4.

This means for every 1 cup of water, there are 4 cups of flour.

If there are 2.5 cups of water, we do 2.5 x 4 = 10 cups of flour.

Answer:

[tex]x=10[/tex]

Step-by-step explanation:

[tex]1\div4=2.5\divx[/tex] ÷ [tex]x[/tex]

a. Find the domain

[tex]\frac{1}{4}=\frac{2.5}{x}[/tex]

If the fraction is defined, the denominator cannot equal 0.

[tex]x\neq 0[/tex]

Append the inequality as the domain

[tex]x\neq 0[/tex]

b. Solve the equation

[tex]\frac{1}{4}=\frac{2.5}{x}[/tex]

Cross multiply

[tex]x=2.5\times4[/tex]

Calculate the product or quotient

[tex]x=10[/tex]

c. Find the intersection

[tex]x=10[/tex]

I hope this helps you

:)

Answer:

6.2ft

Step-by-step explanation:

2+1+3+2.2=6.2