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3 years ago

Help!! Due Tomorrow!!

Mathematics

1 answer:

Gekata [30.6K]3 years ago

8 0

7.)9.68
8.)600
9.)7
10.) cant read
11.) 32
12.) 8
13.) 14
14.) -50
16.) 36
17.) -34, -27, -13, 12, 36, 63

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PLEASE HELPP ILL MARK BRAINLIEST<br> 50 POINTS!! PLEASE

Nutka1998 [239]

Answer:

Step-by-step explanation:

12) Decrease in miles = 22,250 - 14,500 = 7750 miles

$Percent \ decrease = \dfrac{7750}{22250}*100$

= 34.83%

13) Decrease in speed = 40 - 25 = 15 mph

$Percent \ decrease = \dfrac{15}{40}*100$

= 37.5%

6 0

3 years ago

What is the distance between Point A: (-4, -3) and Point B (1, 4) ?

Sholpan [36]

Answer:

sq rt 74 which is approx 8.6

Step-by-step explanation:

use distance formula

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2 years ago

Someone pls help it’s for my exams

Anna35 [415]

Answer:

Step-by-step explanation:

you know that both angles=180

6x+20+2x+4=180

8x+24=180

8x=180-24

8x=156

x=19.5

angle TQS=19.5*60+20=137

angle SQR=2*19.5+4=43

6 0

2 years ago

How do you solve to get y?

dmitriy555 [2]

Answer:

y = 64

Step-by-step explanation:

Using the rule of logarithms

• $log_{b}$ x = n ⇔ x = $b^{n}$

Given

$log_{y}$ 4 = $\frac{1}3}$ , then

4 = $y^{\frac{1}{3} }$

Cube both sides

4³ = ( $y^{\frac{1}{3} }$ )³, hence

y = 64

3 0

3 years ago

In a random sample of 45 newborn babies, what is the probability that 40% or fewer of the sample are boys. (Use 3 decimal places

erastova [34]

Answer:

$z= \frac{p- \mu_p}{\sigma_p}$

And the z score for 0.4 is

$z = \frac{0.4-0.4}{\sigma_p} = 0$

And then the probability desired would be:

$P(p$

Step-by-step explanation:

The normal approximation for this case is satisfied since the value for p is near to 0.5 and the sample size is large enough, and we have:

$np = 45*0.4= 18 >10$

$n(1-p) = 45*0.6= 27 >10$

For this case we can assume that the population proportion have the following distribution

$p \sim N(p,\sqrt{\frac{p(1-p)}{n}})$

Where:

$\mu_{p}= \hat p = 0.4$

$\sigma_p = \sqrt{\frac{p(1-p)}(n} =\sqrt{\frac{0.4(1-0.4)}(45}= 0.0703$

And we want to find this probability:

$P(p$

And we can use the z score formula given by:

$z= \frac{p- \mu_p}{\sigma_p}$

And the z score for 0.4 is

$z = \frac{0.4-0.4}{\sigma_p} = 0$

And then the probability desired would be:

$P(p$

7 0

3 years ago

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