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Advocard [28]
3 years ago
13

Can someone PLEASE help me with these and I will mark brainliest!

Mathematics
1 answer:
Ber [7]3 years ago
7 0

Answer:

1) = 32.02

2) = 18

Step-by-step explanation:

1) 20^2 + 25^2 = 1025

sq rt 1025 = 32.02

2) 30^2 - 24^2 = 324

sq rt 324 = 18

You might be interested in
Write a linear equation that represents the area and a linear equation that represents the perimeter of the rectangle.
solong [7]

Answer:

Area of rectangle = xy square units

Perimeter of rectangle = (2x + 2y) units

Step-by-step explanation:

We are given the following information in the question:

A rectangle with length x unit and breadth y units.

We have to write the equations for area and perimeter of rectangle.

Area of rectangle =

=\text{Lenght}\times \text{Breadth}\\= x\times y\\=xy\text{ square units}

Perimeter of rectangle =

=2\times(\text{Length + Breadth})\\=2\times (x+y)\\=(2x + 2y)\text{ units}

8 0
3 years ago
HELPPPPPPPPPPPPPP!!!!!!!!!!!!!!!!!
sashaice [31]
The answer I got is 8

7 0
3 years ago
Read 2 more answers
Simplify the given equation.<br> 17x - 6 + 3x - 5 = x + 11 + 4x
Step2247 [10]

Answer:

x = 22/15

Step-by-step explanation:

17x - 6 + 3x - 5 = x + 11 + 4x

= (17x + 3x) (-6 - 5) = x + 11 + 4x

= 20x - 11 = x + 11 + 4x

= 20x - 11 = (x + 4x) + 11

= 20x - 11 = 5x + 11

= 20x - 5x = 11 + 11

= 15x = 22

Exact form: 22/15

decimal: 1.4666666...

mixed number: 1 7/15

6 0
3 years ago
A campaign strategist wants to determine whether demographic shifts have caused a drop in allegiance to the Uniformian Party in
Bas_tet [7]

Answer:

d. There is not enough evidence to support the hypothesis that the proportion of Uniformian voters has decreased.

Step-by-step explanation:

This is a hypothesis test for a proportion.

The claim is that there is a significant drop in allegiance to the Uniformian Party in Bowie County.

Then, the null and alternative hypothesis are:

H_0: \pi=0.62\\\\H_a:\pi

The significance level is 0.05.

The sample has a size n=196.

The sample proportion is p=0.57.

The standard error of the proportion is:

\sigma_p=\sqrt{\dfrac{\pi(1-\pi)}{n}}=\sqrt{\dfrac{0.62*0.38}{196}}\\\\\\ \sigma_p=\sqrt{0.001202}=0.035

Then, we can calculate the z-statistic as:

z=\dfrac{p-\pi+0.5/n}{\sigma_p}=\dfrac{0.57-0.62+0.5/196}{0.035}=\dfrac{-0.047}{0.035}=-1.369

This test is a left-tailed test, so the P-value for this test is calculated as:

\text{P-value}=P(z

As the P-value (0.0855) is greater than the significance level (0.05), the effect is  not significant.

The null hypothesis failed to be rejected.

There is not enough evidence to support the claim that there is a significant drop in allegiance to the Uniformian Party in Bowie County.

6 0
3 years ago
Help me please it’s due today
pentagon [3]

Answer:

<em>1. </em><em>B. $20</em>

<em>2.</em><em>C. 19%</em>

<em>3. </em>D. not here

Step-by-step explanation:

1.  info we know

25+45+10+25+15+10 = 130

we need 20 more dollars

2.  25/130   x/100

cross multiply

2500/ 130x

divide

19 = x

3.  same steps as last time

35/130 x/100

3500/130x

29%

5 0
3 years ago
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