Please help with this brother and sisters

Answer:

[tex]2x^2 - 50 = 0 \\\\2(x^2 - 25) = 0\\\\(x^2 -5^2 ) = 0\\\\(x-5)(x+5) = 0\\\\x = 5, -5[/tex]

Answer: (3, 8)

Hope it helps :)

The point graphed on the coordinate plane is either (3,8) or (8,8), depending on whether the horizontal axis is labeled from left to right or right to left.

A graph is a visual representation of data or a mathematical equation. It is used to show the relationship between two or more variables, usually depicted on the horizontal and vertical axes of the graph.

The given points are of the form (x,y), where x is the horizontal axis coordinate (also known as the x-axis) and y is the vertical axis coordinate (also called the y-axis).

Each point in the given options is represented by its (x,y) coordinates. Based on the options provided, we must determine which point is graphed on the coordinate plane.

So, to accomplish this, we simply compare the (x,y) coordinates of each option to the coordinates on the graph and select the option that matches.

Thus, (3,8) or (8,8) can be the coordinate plane.

For more details regarding graph, visit:

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Answer:

3.88

Step-by-step explanation:

$57 multiplied by 7%

Answer:

d is correct

Step-by-step explanation:

Answer:

Français is a new digital currency developed by Stanford PhDs and the other is the first team accept a girl for playing with the bear who heart

Answer:

How many centimeters of lace are use to decorate its side of handkerchief.

22 cm long, 20 cm wide

Multiplication

22 x 20 = N

22 cm x 20 cm = 440 square centimeters

440 square cm

Answer:

6?

Step-by-step explanation:

Answer:

a. 0.87

b. The margin of error is of 0.0124.

c. The 90% confidence interval for the population proportion of adults who think the future health of Social Security is a major economic concern is (0.8576, 0.8824).

d. The 95% confidence interval for this population proportion is (0.8553, 0.8847).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of [tex]\pi[/tex], and a confidence level of [tex]1-\alpha[/tex], we have the following confidence interval of proportions.

[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

In which

z is the z-score that has a p-value of [tex]1 - \frac{\alpha}{2}[/tex].

The margin of error is of:

[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

The confidence interval is:

[tex]\pi \pm M[/tex]

a. What is the point estimate of the population proportion of adults who think the future health of Social Security is a major economic concern.

The sample proportion, that is, 1740 out of n = 2000. So

[tex]\pi = \frac{1740}{2000} = 0.87[/tex]

0.87 is the point estimate.

b. At 90% confidence, what is the margin of error?

90% confidence level

So [tex]\alpha = 0.1[/tex], z is the value of Z that has a p-value of [tex]1 - \frac{0.1}{2} = 0.95[/tex], so [tex]Z = 1.645[/tex].

Then the margin of error is of:

[tex]M =  z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

[tex]M =  1.645\sqrt{\frac{0.87*0.13}{2000}}[/tex]

[tex]M = 0.0124[/tex]

The margin of error is of 0.0124.

c. Develop a 90% confidence interval for the population proportion of adults who think the future health of Social Security is a major economic concern

[tex]\pi - M = 0.87 - 0.0124 = 0.8576[/tex]

[tex]\pi + M = 0.87 + 0.0124 = 0.8824[/tex]

The 90% confidence interval for the population proportion of adults who think the future health of Social Security is a major economic concern is (0.8576, 0.8824).

d.

95% confidence level

So [tex]\alpha = 0.05[/tex], z is the value of Z that has a p-value of [tex]1 - \frac{0.05}{2} = 0.975[/tex], so [tex]Z = 1.96[/tex].

Then the margin of error is of:

[tex]M =  z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

[tex]M =  1.96\sqrt{\frac{0.87*0.13}{2000}}[/tex]

[tex]M = 0.0147[/tex]

The confidence interval will be of:

[tex]\pi - M = 0.87 - 0.0147 = 0.8553[/tex]

[tex]\pi + M = 0.87 + 0.0147 = 0.8847[/tex]

The 95% confidence interval for this population proportion is (0.8553, 0.8847).

Answer:

2.6

Step-by-step explanation:

Answer:

[tex]0.8^2+1.4^2[/tex] equals 2.6

Step-by-step explanation:

  [tex]0.8^2+1.4^2[/tex]

= [tex]0.64+1.96[/tex]

= [tex]2.6[/tex]

Answer:

3 pints = 6 cups

Step-by-step explanation:

Formula: multiply the volume value by 2

Answer:

6 cups

Step-by-step explanation:

1 pint = 2 cups

3 pints = 3x2 cups

3 pints = 6 cups

If this helps please mark as brainliest

Answer:

[tex]f(x)=\sqrt{x}+5[/tex]

Step-by-step explanation:

The parent function of the graph is clearly [tex]f(x)=\sqrt{x}[/tex]. However, at [tex]x=0[/tex], y is equal to 5. Therefore, the function translated up 5 units. Thus, the equation of the function is [tex]f(x)=\sqrt{x}+5[/tex].

Answer:

f(x) = 5 + √x

Step-by-step explanation:

x= 0 ==> y = 5

x= 25 ==> y = 10

this is sq root function, starting from y=5

so, f(x) = 5 + √x

Answer:

answer is 3^2

hopefully this helps someway

Answer:

can you show me the picture? I will edit my answer if you show me full picture

Step-by-step explanation:

Answer:

15mm

Step-by-step explanation

It says the perimeter is 120 pi, if pi is separate from 120, that would make 120 our radius 60. with 4 semicircles, divide 60 by 4 and boom, 15.

I think that's right, I was never good at geometry  

Answer:

Haha once again 1200 and 8.5 are the answers

Answer:

Blue = YES

Red = NO

Green = YES

Step-by-step explanation:

Given the distribution of colors on a spinner :

Blue = 4 ; Red = 6 ; Green = 2

Number of spins = 24

Total = (4 + 6 + 2) = 12

Recall:

Probability, P = required outcome / Total possible outcomes

P(red) = 6 /12 = 1/2

P(blue) = 4 / 12 = 1/3

P(green) = 2 / 12 = 1/6

On 24 spins :

Possible number of red = 1/2 * 24 = 12

Possible number of green = 1/6 * 24 = 4

Possible number of blue = 1/3 * 24 = 8

Answer:

The longest segment is approximately 19.13cm

Step-by-step explanation:

Given

[tex]l = 14cm[/tex]

[tex]w = 11cm[/tex]

[tex]h = 7cm[/tex]

Required

The length of the longest segment (d)

This is calculated using:

[tex]d = \sqrt{l^2 +w^2 + h^2[/tex]

So, we have:

[tex]d = \sqrt{14^2 +11^2 +7^2[/tex]

Using a calculator, the equation becomes

[tex]d = \sqrt{366[/tex]

Take square roots

[tex]d = 19.13cm[/tex]

Answer:

Hello! answer: 10

Step-by-step explanation:

Formula for area of squares: base × height

Formula for area of triangles: base × height ÷ 2

2 × 2 = 4

2 × 2 ÷ 2 = 2

4 × 2 ÷ 2 = 4

4 + 2 + 4 = 10 therefore the area is 10 hope that helps!

Answer: is 27 quarts

Step-by-step explanation:

Answer: 27 quarts

Step-by-step explanation:

6 gallons is 24 quarts. Add the 3 to get 27. Formula: Gx4= Q

6x4=24 Plus the 3 extra= 27 quarts Hope this Helps uwu

Answer:

B. parallelogram

Step-by-step explanation:

Given

See attachment for quadrilateral

Required

Select the type of quadrilateral

From the attached image, we have:

[tex]DE = FG[/tex] -- Opposite, Parallel and Equal

[tex]EF = GD[/tex] -- Opposite, Parallel and Equal

Since all 4 sides are not equal, then it is neither a square; nor a rhombus

Hence, the shape is a parallelogram

Answer:

C 30 in

Step-by-step explanation:

set a proportion: 36/12 = x/10 => x = 36 × 10 ÷ 12 = 30

Answer:

a Minimum

Step-by-step explanation:

Answer:

log2 10 = 3x

Step-by-step explanation:

Basic Logarithm Tenets

Answer:

log2 10=3x

Step-by-step explanation:

is the amswer

Answer:

im confused q or a??

Step-by-step explanation:

Answer:

Step-by-step explanation:

First method information:

Sample size  n₁  = 549

x₁ ( people ignoring on-line harassment )  =  412

Proportion of people ignoring on-line harassment  p₁

p₁ =  412/549   p₁  =  0,75   q₁ =  1  -  p₁    q₁ = 0,25

Second method ( people chosen to respond)

Sample size   n₂  =  368

number of people responding   x₂  = 305

Proportion of people responding

p₂ =  305/ 368    p₂ =  0,83   then  q₂  =  0,17

a) Looking for differences in the approachs

Hypothesis test:

Null Hypothesis                     H₀         p₁  =  p₂

Alternative Hypothesis         Hₐ         p₁  ≠  p₂

Alternative Hypothesis indicates that the test is a two-tail test

Choosing a confidence interval  CI = 95 % then a significance level is       α = 5%     α  = 0,05  and from z-table we get  z(c) =  1.64

To calculate z(s)

z(s)  =  (  p₁  -  p₂ ) / EED

EED = √  p₁*q₁)/n₁  +  (p₂*q₂)n₂

EED = √  (0,75*0,25)/549   +  0,83*0,17)/368

EED = √ 3,41 *10⁻⁴   +  3,83*10⁻⁴

EED =   10⁻² *√ 3,41 + 3,83

EED =   10⁻² * 2,69

EED = 0,0269

z(s)  =  (  p₁  -  p₂ )/0,0269

z(s)  = -  0,08 / 0,0269

z(s)  =  - 2,97

p-value for z(s)  is  pvalue  = 0,0015

Comparing  z(s)  and  z(c)   modules

z(s) > z(c)  therefor z(s) is in the rejection region we have to reject H₀ and claim that there is a difference between the proportions

b) How large is the difference

Answer:

grain sited

Step-by-step explanation:

Answer:

It's B

Step-by-step explanation:

Answer:

26

Step-by-step explanation:

5 × 4 = 20 (rectangle)

8-5 = 3 (triangle)

3×4÷2 = 6

20+6 = 26