2 years ago

Evaluate 42 – a² + ab for a = 6 and b = 5.

Mathematics

2 answers:

Reika [66]2 years ago

7 0

Answer:

42-a²+ab

42-6²+6×5

42-36+30

6+30

36.

rodikova [14]2 years ago

3 0

42-(6x6)+(6x5)
42-36+30
6+30
Answer: 36

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3a + b/a + 4a<br> if a= 4 and b= -12

Feliz [49]

Replace a with 4 and b with -12

3(4) + -12/4 + 4(4) = 16+-12/4+4*4 = 29

7 0

3 years ago

The Paralyzed Veterans of America is a philanthropic organization that relies on contributions. They send free mailing labels an

lions [1.4K]

Answer:

Confidence interval: (0.04649,0.04913)

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 100,000

Number of people who donated, x = 4781

$\hat{p} = \dfrac{x}{n} = \dfrac{4781}{100000} = 0.04781
$

95% Confidence interval:

$\hat{p}\pm z_{stat}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

Putting the values, we get:

$0.04781
\pm 1.96(\sqrt{\dfrac{0.04781
(1-0.04781
)}{100000}})\\\\=0.04781
\pm 0.00132\\\\=(0.04649,0.04913)$

is the required 95% confidence interval for the true proportion of their entire mailing list who may donate.

3 0

3 years ago

If u=6 feet, v=7 feet, w=4 feet, x=6 feet, y=12, and z=3 feet, what is the area of this object?

eimsori [14]

Answer:

D. 62 square feet

Step-by-step explanation:

uz + wx + (v+z)(y-u-w)

6*3 + 4*6 + (7+3)(12-6-4)

18 + 24 + 20 = 62

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3 years ago

What is the scientific notation of 112,050?

kirill [66]

The Answer Will Be 1.1205 x 10 To The 5th Power.

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3 years ago

Any help please and thank you

tatyana61 [14]

Answer:

n=6

j=15

u=7.6

Step-by-step explanation:

Given TACBRD=MYPXEF

we find that the ratio is 1 : 2.5 and we solve from here

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3 years ago