Can 9 40 41 make a triangle​

Answer:

We need more info, take a picture of the qustion

Step-by-step explanation:

Answer:

x = ± 5

Step-by-step explanation:

for the figure to be an isosceles trapezoid

then the lower base angles must be congruent , that is

3x² - 4 = 2x² + 21 ( subtract 2x² from both sides )

x² - 4 = 21 ( add 4 to both sides )

x² = 25 ( take square root of both sides )

x = ± [tex]\sqrt{25}[/tex] = ± 5

Answer:

x=5

Step-by-step explanation:

Here,

→[tex]2x^{2} +21=3x^{2} -4\\\\[/tex]

→[tex]21+4=3x^{2} -2x^{2} \\[/tex]

→[tex]x^{2} =25[/tex]

→[tex]x=\sqrt{25}[/tex]

→[tex]x=5[/tex]

Let's check whether they are equal or not by putting the value of x.

→[tex]2x^{2} +21[/tex]

→[tex](2*5^{2}) +21[/tex]

→[tex]50+21[/tex]

→[tex]71[/tex]

→[tex]3x^{2} -4[/tex]

→[tex](3*5^{2} )-4[/tex]

→[tex]75-4[/tex]

→71

Hence they are equal.

The margin of error for the population mean for the 90% confidence level is 1.10.

The margin of error is a statistic that expresses how much random sampling error there is in a survey's results. The wider the margin of error, the less confident one should be that a poll result reflects the outcome of a population-wide survey.

It is given by the formula:

[tex]\text{MOE}_{\gamma}=z_{\gamma} \times \sqrt{\frac{\sigma^{2}}{n}}[/tex]

As the mean is given to us is 71 beats and the standard deviation is 6 beats, therefore, the margin of error for 90% confidence level can be written as,

[tex]\text{MOE}_{\gamma}=z_{\gamma} \times \sqrt{\frac{\sigma^{2}}{n}}\\\\\text{MOE}_{\gamma}=1.645 \times \sqrt{\dfrac{6^{2}}{80}}\\\\\text{MOE}_{\gamma}=1.645 \times \sqrt{\dfrac{36}{80}}\\\\\text{MOE}_{\gamma}=1.1034\approx 1.10[/tex]

Hence, the margin of error for the population mean for the 90% confidence level is 1.10.

Learn more about the Margin of error:

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Answer:

B on edge

Step-by-step explanation:

Step-by-step explanation:

Domain tells us all the possible x values or inputs of a function.

Here the input is n.

The domain here is defined on the interval [-1,3) so the domain can be notated in 3 ways.

Interval Notation: [-1,3]

Words: All inputs that is between -1 and 3, exclusively.

Sign Notation:

[tex] - 1 \leqslant x \leqslant 3[/tex]

The Range of a function is possible y values or outputs of a function.

For the range, plug in x values to find the y values.

Since the range in this problem, is only defined for -1 to 3. Plug in -1 for n in the function.

[tex]2( - 1) - 1 = - 3[/tex]

[tex]2(3) - 1 = 5[/tex]

So the range of is

[-3,5]

Or could be stated

All outputs between -3 and 5 exclusively

[tex] - 3 \leqslant x \leqslant 5[/tex]

Here's a graph. Look Above

The correlation coefficient for the data in the given table is 0.28.

Correlation coefficients are used to measure how strong a relationship is between two variables.

Number of flowers X   Total cost(in$) Y

          8                          12

          12                        40

          6                          15

         20                        20

       ∑X=46                  ∑X=87

The image of the correlation coefficient formula has been attached.

X mean = 11.5

Y mean = 21.75

Using the attached formula

Correlation coefficient r = 0.28

Therefore, the correlation coefficient for the data in the given table is 0.28.

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Answer:

2 9/10

Step-by-step explanation:

subtract the 1 mile from the 3 9/10 mile. kinda like 3-1 but then you put the other stuff on the end (9/10)

I'm pretty sure this is the correct answer

Answer:

2; 3; 10

Step-by-step explanation:

1.) There are 4 halves (1/2) in 2; 4/2 = 2

2.) There are 15 1 fifths (1/5) in 3; 15/5 = 3

3.) There are 10 1 eights (1/8) in 1 and 1 fourth; 1.25/0.125 = 10

For WXYZ to be a parallelogram, the value of x must be 3.

A parallelogram is a quadrilateral in which opposite sides are parallel and equal to each other. Opposite angles are also equal to each other. In a parallelogram, diagonals bisect each other when they intersect each other.

In a parallelogram when diagonals intersect, they bisect each other.

So, WC and CY will be equal to each other

i.e. WC = CY

i.e. [tex]2x+5 = 3x+2[/tex]

[tex]2x-3x = 2-5[/tex]

[tex]-x=-3[/tex]

[tex]x=3[/tex]

Therefore, For WXYZ to be a parallelogram, the value of x must be 3.

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Answer:

x=3

Step-by-step explanation:

E2020

Answer:

The first graph

Step-by-step explanation:

*View attached graph*

Hope this helps!

Answer: I am not sure exactly what you need as there is no context

-> See attached for graph

-> They intersect at point (2, -1)

Step-by-step explanation:

     To answer your question of "I mainly need help with knowing what to do with y=-1​" you will graph it as you do with y = - [tex]\frac{5}{2}[/tex]x + 4.

     Any y = something equation will be a horizontal line. There is no slope, the "mx" chunk, so the line stays straight. You will put a dot at (0, -1) and draw a line straight from that point.

     For y = - [tex]\frac{5}{2}[/tex]x + 4, place a dot at (0, 4) and then count down 5 units and 2 units to the right to place another dot. Then draw a line through these two dots and extend it beyond to create the line.

Step-by-step explanation:

Hope this is helpful

y=-1 is nothing but it's the y value by using that we have to find the x value

Answer:

Step-by-step explanation:

Answer:

0.7

Step-by-step explanation:

4/10 + 3/10 = 7/10

7/10 as a decimal is 0.7

Answer: 0.7

The z-score of the considered newborn having 4,000 g weight is [tex]\dfrac{4000 - \mu}{\sigma}[/tex]

If we've got a normal distribution, then we can convert it to standard normal distribution and its values will give us the z score.

If we have

[tex]X \sim N(\mu, \sigma)[/tex]

(X is following normal distribution with mean [tex]\mu[/tex] and standard deviation  [tex]\sigma[/tex])

then it can be converted to standard normal distribution as

[tex]Z = \dfrac{X - \mu}{\sigma}, \\\\Z \sim N(0,1)[/tex]

(Know the fact that in continuous distribution, probability of a single point is 0, so we can write

[tex]P(Z \leq z) = P(Z < z) )[/tex]

Also, know that if we look for Z = z in z tables, the p value we get is

[tex]P(Z \leq z) = \rm p \: value[/tex]

For the considered case, the statement in the problem is missing the mean weight of the newborn and standard deviation of the data set of weights of newborn.

Thus, for them, we can consider variables in place of their actual values.

Let we have:

Then, the z-score for X = 4000 is

[tex]z = \dfrac{x - \mu}{\sigma} = \dfrac{4000 - \mu}{\sigma}[/tex]

Thus, the z-score of the considered newborn having 4,000 g weight is [tex]\dfrac{4000 - \mu}{\sigma}[/tex]

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Answer:

The answer would be 1!

Step-by-step explanation:

I did the assignment.

edge 2022

Answer:

A ✓5 is the irrational number.

Step-by-step explanation:

Have a good day. :)

Hello.

A rational number can be expressed as a fraction.

Let's check if we can express the given numbers as fractions.

The first number is √5.

Can we express √5 as a fraction? No.

Why? Because √5=2.236...

We cannot express this number as a fraction.

Thus, √5 is irrational.

Let's check the other 3 numbers.

The second number is -2.

Can we express -2 as a fraction? Sure!

[tex]\displaystyle-\frac{2}{1}[/tex]

Thus, -2 is rational.

What about the third number?

Well, it's already a fraction.

Seems like Option A is the right option, huh? Well, let's check the last one as well.

The last one is √9.

9 does have a square root, unlike 5.

It equals 3:

√9=3

Let's express 3 as a fraction:

[tex]\displaystyle\frac{3}{1}[/tex]

Therefore, Option A is the right option ;)

I hope it helps.

Have a great day.

[tex]\boxed{imperturbability}[/tex]

I assume you're just solving for x. Factorize the left side as

3 sin²(x) - 3 sin⁴(x) = 3 sin²(x) (1 - sin²(x)) = 0

Recall that

sin²(x) + cos²(x) = 1

so that the equation further reduces to

3 sin²(x) cos²(x) = 0

Also recall the double angle identity,

sin(2x) = 2 sin(x) cos(x)

which lets us rewrite the equation as

3/2² (2 sin(x) cos(x))² = 3/4 sin²(2x) = 0

Solve for x :

3/4 sin²(2x) = 0

sin²(2x) = 0

sin(2x) = 0

2x = arcsin(0) + 2nπ   or   2x = π - arcsin(0) + 2nπ

(where n is any integer)

2x = 2nπ   or   2x = (2n + 1) π

x = nπ   or   x = (2n + 1)/2 π

Notice that this means the solution set is

{…, -2π, -3π/2, -π, -π/2, 0, π/2, π, 3π/2, 3π, …}

so we can condense the solution further to

x = nπ/2

with any integer n.

Answer:

50.24 cm^2

Step-by-step explanation:

r=4, so the answer is 16π. replacing π with 3.14 to get 50.24 cm^2

Answer:

See below

Step-by-step explanation:

The condition that calls be made between 8am and 4pm will exclude anyone who leaves home for work or school during those hours, which are the most common work periods of the day.  The sampling will consist primarily of home-keepers, babysitters, or students skipping class or doing homework, with an occasional worker who works the night shift and is upset with the call since it woke that person from sleep.

[tex]tan(30) = (\frac{x}{7} )\\x = 7*tan(30)[/tex]

After this step, find the button on your calculator that says 'tan' and type n 30 degrees, then press enter or the equal sign or whatever button you press to calculate.

You should get that tan(30) = 0.5774

Now plug that back into the equation

     [tex]x = 7 * 0.5774 = 4.0415[/tex] (approximated)

Hope that helps!

Step-by-step explanation:

rewrite the equation as x/7 = tan (30).

x/7= tan (30)

multiply both sides of the equation by 7 .

7•x/7=7• tan (30)

simplify both sides of equation x=7π3/3

the result can be shown in multiple forms exact forms x=7π3/3

decimal form x=404145188...

TAN (30) =X/7

The amount of medicine in the bloodstream decreases by 25% each hour.

The standard exponential equation is expressed as:

y = ab^x

a is the initial amount

b is the rate

If b < 1, hence there is a declince

Given the expoenentia equation A(h)=600(0.75)^h,

b = 1 - r = 0.75

r = 1 - 0.75

r = 0.25

This shows that the amount of medicine in the bloodstream decreases by 25% each hour.

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Answer:

[tex]x = -1[/tex], [tex]y = 4[/tex]

Step-by-step explanation:

[tex]2x + 3y = 10[/tex]

[tex]3x + 5y = 17[/tex]

By using substitution:

[tex]2x + 3y = 10[/tex]

[tex]2x = -3y + 10[/tex]

[tex]x = -\frac{3}{2} y + 5[/tex]

[tex]3x + 5y = 17[/tex]

[tex]3 (-\frac{3}{2}y + 5) + 5y = 17[/tex]

[tex]\frac{1}{2} y + 15 = 17[/tex]

[tex]\frac{1}{2} y = 2[/tex]

[tex]y = 4[/tex]

[tex]x = -\frac{3}{2}y + 5[/tex]

[tex]x = -\frac{3}{2} (4) + 5[/tex]

[tex]x = -1[/tex]

Answer:

overestimate

Step-by-step explanation:

The actual numbers are 4.5 and 11.91.

She used 5, which is greater than 4.5 and 12 which is grater than 11.91, so her estimate is an overestimate.

Answer: overestimate

Answer:

y = 500(1.10)^4

Step-by-step explanation:

We put the 1 in 1.10 instead of 0.10, because we're trying to find 10% of $500, added to the $500 itself. 1 is the same as 100%. 100% here is $500. So by doing 1.10, we're finding 110% or $500 + 10% of $500.

Hope this makes sense :))

We need to find value of x from the equation, so let write the equation first;

[tex]{:\implies \quad \sf \dfrac{7x+14}{3}-\dfrac{17-3x}{5}=6x-\dfrac{4x+2}{3}-5}[/tex]

Taking LCM both sides ;

[tex]{:\implies \quad \sf \dfrac{35x+70-(51-9x)}{15}=\dfrac{18x-(4x+2)-15}{3}}[/tex]

Multiplying both sides by 15 and simplifying ;

[tex]{:\implies \quad \sf 35x+70-51+9x=5(18x-4x-2-15)}[/tex]

[tex]{:\implies \quad \sf 44x+19=5(14x-17)}[/tex]

[tex]{:\implies \quad \sf 44x+19=70x-85}[/tex]

[tex]{:\implies \quad \sf 70x-44x=19+85}[/tex]

[tex]{:\implies \quad \sf 26x=104}[/tex]

[tex]{:\implies \quad \sf x=\dfrac{104}{26}=\boxed{\bf 4}}[/tex]

Hence, The required answer is 4

Given: {(7x + 14)/3} - {(17 - 3x)/5} = 6x - {(4x + 2)/3} - 5

Asked: Find the value of x = ?

Explanation: Given equation is {(7x + 14)/3} - {(17 - 3x)/5} = 6x - {(4x + 2)/3} - 5

⇛{(7x + 14)/3} - {(17 - 3x)/5} = {(6x)/1} - {(4x + 2)/3} - (5/1)

⇛{(7x*5 + 14*5 - 17*3 + 3x*3)/15} = {(6x*3 - 4x*1 - 2*1 - 5*3)/3}

⇛{(35x + 70 - 51 + 9x)/15} = {(18x - 4x - 2 - 15)/3}

⇛{(35x + 9x + 70 - 51)/15} = {(18x - 4x - 2 - 15)/3}

⇛{(44x + 19)/15} = {(14x - 17)/3}

⇛[{1/15}(44x + 19)] = [{1/3}(14x - 17)}]

⇛{(44x + 19)/15} = {(14x - 17)/3}

Since (a/b) = (c/d) ⇛a(d) = b(c) ⇛ad = bc

Where, a = 44x + 19, b = 15

c = 14x - 17 and d = 3

On applying cross multiplication then

⇛3(44x + 19) = 15(14x - 17)

Multiply the numbers outside of the bracket with numbers in the bracket.

⇛132x + 57 = 210x - 255

Shift the variable value on LHS and constant value on RHS.

⇛132x - 210x = -255 - 57

Subtract the values on LHS and RHS.

⇛(-78x) = (-312)

Shift the number (-78) from LHS to RHS.

⇛x = {(-312)/(-78)

Simplify the RHS fraction to get the final value of x.

⇛x = 4/1

Therefore, x = 4

Answer: Hence, the value of x for the given problem is 4.

EXPLORE MORE:

Verification:

Check whether the value of x for the given problem is true or false.

If x = 4 then LHS of the equation is

{(7x + 14)/3} - {(17 - 3x)/5}

= [{7(4) + 14}/3] - [{17 - 3(4)}/5]

= {(7*4 + 14)/3} - {(17 - 3*4)/5}

= {(28 + 14))3} - {(17 - 12)/5}

= (42/3) - (5/5)

= (42/3) - 1

= (42/3) - (1/1)

= {(42 - 1*3)/3

= {(42 - 3)/3}

= (39/3)

= 13/1

= 13

And RHS = 6x - {(4x + 2)/3} - 5

= 6(4) - [{4(4) + 2}/3] - 5

= 24 - {(16 + 2)/3} - 5

= 24 - (18/3) - 5

= 24 - (6/1) - 5

= (24/1) - (6/1) - (5/1)

= (24*1 - 6*1 - 5*1)/1

= (24 - 6 - 5)/1

= (24 -11)/1

= 13/1

= 13

On comparing with both the sides, we notice that LHS = RHS is true for x = 4

Hence, verified.

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Distribute the 34 to both the x and -1, and once you do that, your answer is 34x - 34

Answer:

34x - 34

Step-by-step explanation:

34(x - 1) ← multiply each term in the parenthesis by 34

= 34x - 34

Answer:

an=33n-13

Step-by-step explanation:

86-53=33

53-20=33

That's where 33n comes from

-13 comes from

20-33=-13

Hope this helps! :)