3 years ago

Can you guys help please

Mathematics

1 answer:

BabaBlast [244]3 years ago

3 0

30+10 =40
Divide it by 2 (you always divide a number by 2 if you want to find the average), 40/2 = 20. So 20mph

You might be interested in

The CBS’ television show 60 Minutes has been successful for many years. That show recently had a share of 20, which means that a

xxMikexx [17]

Given:
p = 20% = 0.2, sample proportion
n = 5000, sample size.
Confidence level = 95%

The confidence interval is
(p - 1.96k, p + 1.96k)
where
$k=\sqrt{ \frac{p(1-p)}{n} }=\sqrt{ \frac{0.2*0.8}{5000}} =0.00566$

Therefore the 95% confidence interval is
(0.1943, 0.2057) = (19.4%, 20.6%)

Answer: The 95% confidence interval is (19.4%, 20.6%)

6 0

4 years ago

Round the mixed number to the nearest 1/2. 4 2/3 A.4 B.4 1/2 C.5

IceJOKER [234]

2/3 is 0.6. 1/2 is 0.5.

so 0.6 is less than 0.75 and it will round up to 0.5, not to 1.

so 4 2/3 will round to 4 1/2.

6 0

4 years ago

Read 2 more answers

A coin is tossed 7 times . Which of the following represents the probability of the coin landing on tails all 7 times

Studentka2010 [4]

Answer:

○ C. $\frac{1}{64}$

Step-by-step explanation:

Using the formula $\frac{1}{2^{n}}$ , where n represents the number of tosses, substitute 7 in for n to get this:

$\frac{1}{64} = \frac{1}{2^{7}}$

I am joyous to assist you anytime.

5 0

3 years ago

Solve using elimination. 8x + 10y = -18 3x + 5y = -18

Y_Kistochka [10]

Answer: The answer is (9, -9)

6 0

3 years ago

What are the three of Earth's spheres in which energy is transferred by convection?

cricket20 [7]

When the Sun's energy moves through space, it reaches Earth's atmosphere and finally the surface. This radiant solar energy warms the atmosphere and becomes heat energy. This heatenergy is transferred throughout the planet's systems in three ways: by radiation, conduction, and convection.

3 0

3 years ago