Answer now will give brainless

Answer:

= 8.06

Step-by-step explanation:

4^2 + 7^2
16 + 49
= ∫65
= 8.06

Answer:

90

40

45%

Step-by-step explanation:

the way I go 40 was by looking around the blank space, and i see that the 2 totals are 110 and 88. 110-70=40 and 88-48=40 so that is the answer for that one

and for the frequency i took 90 and divided it by 200 gettin 0.45 and then i moved the decimal 2 places to the right giving me my percentage

The hydroxide ion concentration in a solution of nh3 with a poh of 4.65 is 2.2387×10⁻⁵ M.

The pH scale, which originally stood for "potential of hydrogen," is used to describe the acidity or basicity of aqueous solutions. The pH of acidic solutions is lower than that of basic or alkaline solutions.

Hydronium ions concentration of the solution with a pH value of 4.65.

[tex]pH = -\rm log[H_3O^+]\\\\4.65 = -log[H_3O^+]\\\\\text{Taking Antilog}\\\\10^{-4.65}=[H_3O^+]\\[/tex]

[tex][H_3O^+] = 2.2387 \times 10^{-5} M[/tex]

Now, we know that the Hydroxide ions concentration of the solution with pOH value of 4.65. Therefore,

[tex]pOH = -\rm log[OH^-]\\\\4.65 = -log[OH^-]\\\\\text{Taking Antilog}\\\\10^{-4.65}=[OH^-][/tex]

[tex][OH^-]=2.2387 \times 10^{-5}\ M[/tex]

Hence, the hydroxide ion concentration in a solution of nh3 with a poh of 4.65 is 2.2387×10⁻⁵ M.

Learn more about pH value:

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Answer:

first one is 2.24 then -5

2nd one is 2.24 then -5

i just did it

The numbers of large bowl sold at the fair is 20

Data;

To solve this problem, we need to write system of equations for this.

Let x represent the numbers of small ceramic bowl

let y represent the numbers of large ceramic bowl

[tex]x+y=32...eq (i)\\18x + 35y = 916 ...eq(ii)[/tex]

From equation (i), let's make x the subject of formula

[tex]x + y = 32\\x = 32 - y...eq(iii)[/tex]

Let's substitute equation (iii) into equation (ii)

[tex]18x+35y = 916\\x = 32 - y\\18(32 -y) + 35y = 916\\576- 18y + 35y = 916\\17y = 916 - 576\\17y = 340\\\frac{17y}{17} = \frac{340}{17}\\ y = 20[/tex]

The numbers of large bowl sold at the fair is 20

Learn more on system of equations here;

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Z-score of given data comes to be 4.84.

It is given that:

Mean price of a prom dress μ= $195

Standard deviation σ= 12

Mean of price spent on prom dress out of 20 people X= $208

Sample size n= 20

A Z-score is a numerical measurement that describes a value's relationship to the mean of a group of values.

Z-score = (X-μ)/(σ/√n)

Where, X = observed value

μ= mean

σ = standard deviation

n =sample size

Z-score of above data = (208-195)/(12/√20)

Z-score = 4.84

Therefore, the Z-score of the given data comes to be 4.84.

To get more about Z-score visit:

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Answer:

B

Step-by-step explanation:

on edge

Answer:

24.6%

Step-by-step explanation:

243-195=48

48/195=x/100

48 × 100

4800/195= 24.6%

Answer: the value of y is - 2

Step-by-step explanation:

Step-by-step explanation:

[tex] \sqrt{28 - 6x} = x - 6 \\ ({ \sqrt{28 - 6x}) }^{2} = {(x - 6)}^{2} \\ + - (28 - 6x) = {x}^{2} - 12x + 36 \\ 0 = {x}^{2} - 6x + 8 \\ 0 = (x - 2)(x - 4) \\ x - 2 = 0 \\ x - 4 = 0 \\ x = 2 \\ x = 4 \\ we \: must \: check \: the \: answer \: \\ \sqrt{28 - 6(2)} = 2 - 6 \\ \sqrt{16} = - 4 \\ 4 = - 4 \\ it \: is \: wrong. \: \\ \sqrt{28 - 6(4)} = 4 - 6 \\ \sqrt{4} = - 2 \\ 2 = - 2 \\ it \: is \: wrong \: too.[/tex]

-( 28 - 6x ) = x² - 12x + 36

x² - 18x + 64 = 0

√∆ = √( 324 -256)= √68 = 2√17

x = (18 ± 2√17)/2 = 9 ± √17 → 9+√17 ✓

9-√17 is not acceptable because the radical answer can not be negative.

Answer:

her pay increases by 30$ each hour she work

Step-by-step explanation:

hope it helps

Answer:

2m²-6m

Step-by-step explanation:

First simplify the numerator.

Then cancel the common factor of m+3 and use distributive property.

Multiply m by m and lastly multiply -3 by 2.

Answer :

⠀

Explanation :

⠀

To Find :

⠀

Solution :

⠀

We know,

[tex]{ \longrightarrow\qquad \bf\pi {r}^{2}h = \bf{Volume_{(cylinder) } }}[/tex]

⠀

Where,

⠀

Now, Substituting the values :

[tex]{ \longrightarrow\qquad \sf\pi \times {(2.5)}^{2} \times h = {50 \pi } }[/tex]

[tex]{ \longrightarrow\qquad \sf\pi \times 6.25 \times h = {50 \pi } }[/tex]

⠀

Cancelling π from both sides :

[tex]{ \longrightarrow\qquad \sf \cancel\pi \times 6.25 \times h = {50 \: \cancel \pi } }[/tex]

[tex]{ \longrightarrow\qquad \sf 6.25 \times h = {50 } }[/tex]

[tex]{ \longrightarrow\qquad \sf h = { \dfrac{50}{6.25} } }[/tex]

[tex]{ \longrightarrow\qquad {\pmb {\bf{h = {8 } }}}}[/tex]

⠀

Therefore,

Answer:

  see attached

Step-by-step explanation:

Each grid is divided into units by the dark vertical lines, and into fractions of the last unit by the lighter vertical lines. The left-side figure, for example, shows 3 units, the last of which is divided into fourths (1/4s).

The lighter horizontal lines divide the vertical space into fractions. The left side figure has horizontal lines dividing the vertical space into tenths (1/10s).

Overall, each grid represents multiplication of a mixed number by a fraction.

__

The left-side figure has coloring horizontally covering two full units and 3/4 of the last unit. The coloring vertically occupies 3 of the 10 spaces, Overall, the figure represents multiplication of 2 3/4 by 3/10. That matches the solution required for the question about July rainfall (bottom word problem).

__

The top right figure has coloring horizontally that covers two full units and 2/3 of the last unit. The coloring vertically occupies 2 of the 3 spaces. Overall, the figure represents multiplication of 2 2/3 by 2/3. That matches the solution required for the question about mat area (top word problem).

__

The bottom right figure has coloring horizontally that covers three full units and 1/5 of the last unit. The coloring vertically occupies 1 of the 4 spaces. Overall, the figure represents multiplication of 3 1/5 by 1/4. That matches the solution required for the question about the weight of carrots (middle word problem).

_____

Additional comment

Perhaps the confusing part is that the answer to the question, as represented by the shaded area, is not easy to determine from the figure.

The left-side figure, for example, has a blue shaded area that totals 6/10, and an orange shaded area that totals 9/40. The answer to the question posed is then 6/10 +9/40. The diagram offers no help in figuring the value of that sum, hence the answer to the question.

Answer:

C

Step-by-step explanation:

One side;

7 x 8 = 56, the side parallel to it is also 56 as well, so 56(2).

Second(bottom) side;

8 x 4 = 32, the side parallel to it(the side above) is also 32 as well, so 32(2).

Third(front) side;

4 x 7 = 28, the side parallel to it(backside) is also 28 as well, so 28(2).

You add all those products to get the surface area:

56(2) + 32(2) + 28(2)

Answer:

The radius is approx. 7.5

Let me know if it helps or if I got anything wrong!

Step-by-step explanation:

To find the circumference, you need to multiply the diameter by pi (3.14)

And for vice versa, just divide.

Since we don't know the diameter nor radius, we need to divide the Circumference (C) by pi (3.14)

47/3.14=14.968

Which is rounded up to 15.

We have now found the diameter.

We also know that the radius is half of the diameter

15/2=7.5

Answer:

its B hope that helps have a great day

Answer:17

Step-by-step explanation:

I just did it and got it write 15/8=17

Answer:

B

Step-by-step explanation:

Answer:

1. -2/1

2. -1.5

3. 25

4. -0.025

Step-by-step explanation:

divide by the coefficient on both sides of then equation.

Answer:

a)

[tex]y=-\dfrac17x^2+2x+10[/tex]

[tex]y=2x+3[/tex]

b)  Equate the equations and solve for x:

[tex]-\dfrac17x^2+2x+10=2x+3[/tex]

[tex]\implies -\dfrac17x^2+2x-2x=3-10[/tex]

[tex]\implies -\dfrac17x^2=-7[/tex]

[tex]\implies x^2=49[/tex]

[tex]\implies x=\pm\sqrt{49}[/tex]

[tex]\implies x=7[/tex] (as time is positive)

The same number of people were rock climbing and zip-lining on day 7.

c) Substitute [tex]x = 7[/tex] into [tex]y = 2x + 3[/tex] and solve for y:

[tex]\implies 2(7)+3=17[/tex]

Therefore, 17 people were participating in each activity on day 7.

Answer:

The same number of people were rock climbing and zip-lining on day 7.

c) Substitute  into  and solve for y:

Therefore, 17 people were participating in each activity on day 7.

Step-by-step explanation:

The number that needs to be added to the equation [tex]x^{2} +4x+3[/tex] will be 1

Given equation is  [tex]x^{2} +4x+3[/tex]

Now by adding 1 to the equation  [tex]x^{2} +4x+3[/tex] we get

[tex]x^{2} +4x+3+1=x^{2} +4x+4[/tex]

[tex]x^{2} +2x+2x+4[/tex]

Now by splitting the equation

[tex]x(x+2)+2(x+2)[/tex]

[tex](x+2)(x+2)[/tex]

[tex](x+2)^{2}[/tex]

Thus the number that needs to be added to the equation [tex]x^{2} +4x+3[/tex] will be 1

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A - 1

Correct answer. Since, well you just need one more tile to add, especially noticeable in the picture shown! Enjoy folks

Answer:

2.5 inches / B (edited)

Step-by-step explanation:

1.25 inches is the radius, so 2.5 inches is the diameter, because:

The diameter's formula is [tex]2r[/tex]. :) emjoy

Answer:

The answer is D: sin 11pi/6

<3

Step-by-step explanation:

Answer:

d

Step-by-step explanation:

Answer:

The answer above is correct, I got it wrong originally! Sorry for wasting this spot! ^w^

Step-by-step explanation:

Answer:

10 is the answer

Step-by-step explanation:

thank me layer

Answer:

10

Step-by-step explanation:

The square root is the opposite of squared. 10²=10x10=100. There is no method of squarooting something. The only method would be calculator or memorizing perfect squares.

Step-by-step explanation:

Simplify 20/55;

[tex] \frac{20 \div 5}{55 \div 5} = \frac{4}{11} [/tex]

[tex] \frac{2}{5} \: is \: not \: equivalent \: to \: \frac{4}{11} [/tex]

In order for 2/5 to be equivalent with 20/55, it has to be an unsimplified form of the ratio 2/5. We can identify that 20/55 isn't.

Assuming 2:5 and 22:55 are equivalent. Then;

[tex]\implies 2:5 = 20:55[/tex]

This can be checked by using two methods. Listed below!

This method has been used in the above answer. The above answer has simplified the right-hand-side and verified that the ratios are not equivalent.

Obtained ratio:

[tex]2:5 = 20:55[/tex]

We can see that 20 and 55 are divisible by 5. Therefore, we can divide 5 to the numerator and the denominator to simplify the fraction.

[tex]2:5 = (20 \div 5):(55 \div 5)[/tex]

[tex]2:5 = (4):(11)[/tex]

Therefore, the given ratios are NOT equivalent.

To determine if the ratios are equivalent (or not);

Therefore,

[tex]\implies 2:5 = 20:55[/tex]

[tex]\implies 2 \times 55 = 5 \times 20[/tex]

Now, let's simplify both sides of the equation.

[tex]\implies 2 \times 55 = 5 \times 20[/tex]

[tex]\implies 110 = 100 \ \ \ (\text{False})[/tex]

Therefore, the given ratios are NOT equivalent, as stated in method 1.

Learn more about equivalent ratios: https://brainly.com/question/18835388

Answer:

x=

29

12

​

≈0.413793103

y=

29

20

​

≈0.689655172

Answer:

The answer is 13!

Step-by-step explanation:

Have a great day!

Answer:

x² + (y - 2)² = 41

Step-by-step explanation:

the equation of a circle in standard form is

(x - h )² + (y - k)² = r²

where (h, k ) are the coordinates of the centre and r is the radius

The distance from the centre to a point on the circle is the radius r

calculate r using the distance formula

r = [tex]\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2 }[/tex]

with (x₁, y₁ ) = (0, 2 ) and (x₂, y₂ ) = (5, - 2 )

r = [tex]\sqrt{(5-0)^2+(-2-2)^2}[/tex]

  = [tex]\sqrt{5^2+(-4)^2}[/tex]

  = [tex]\sqrt{25+16}[/tex]

  = [tex]\sqrt{41}[/tex] , then r² = ([tex]\sqrt{41}[/tex] )² = 41

then

(x - 0)² + (y - 2)² = 41 , that is

x² + (y - 2)² = 41 ← equation of circle