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2 years ago

Can you help me please I need help :,)

Mathematics

2 answers:

Naddik [55]2 years ago

8 0

Answer:

24v+8

Step-by-step explanation:

Calculations

omeli [17]2 years ago

4 0

Answer:

24v+8

Step-by-step explanation:

-8(-1 - 3v)

-8(-3v -1)

distribute

24v+8

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A coach travels 300 miles at an average speed of 40mph.

Over [174]

Answer:

so first u would take away 300 form 40 and u would get six the u convert that 260 min to hour then u will get four hours so 4 hrs is ur answers hope this helps

4 0

3 years ago

A simple random sample from a population with a normal distribution of 102 body temperatures has x overbarequals98.40degrees Upp

Oliga [24]

Answer:

It is 80% statistically safe to conclude that the population standard deviation is less than 1.8°F

Step-by-step explanation:

The given information are;

The sample size, n = 102

The sample mean = 98.4°F

The sample standard deviation = 0.66°F

$\sqrt{\dfrac{\left (n-1 \right )s^{2}}{\chi _{\alpha /2}^{}}}< \sigma < \sqrt{\dfrac{\left (n-1 \right )s^{2}}{\chi _{1-\alpha /2}^{}}}$

α = 0.2, ∴ α/2 = 0.1

$\chi _{1-\alpha /2}$ = $\chi _{0.9, 101}$ = 83.267

$\chi _{\alpha /2}$ = $\chi _{0.1, 101}$ = 119.589,

Which gives;

$\sqrt{\dfrac{\left (102-1 \right )0.66^{2}}{119.589}^{}}}< \sigma < \sqrt{\dfrac{\left (102-1 \right )0.66^{2}}{83.267}^{}}}$

0.607 < σ <0.727

Therefore, it is 80% statistically safe to conclude that the population standard deviation is less than 1.8°F.

5 0

3 years ago

Convert for 2/3 to a fraction greater than one

Salsk061 [2.6K]

Answer: 14/3

You need to multiply 3 x 4 then add the 2

4 0

3 years ago

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Together, teammates Pedro and Ricky got 2861 base hits last season. Pedro had 277 more hits than Ricky. How many hits did each p

PtichkaEL [24]

Answer:

Ricky 1292 Pedro 1569

6 0

3 years ago

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What is the value of −9/4 + |−8/5| − 2 1/2 ?

mariarad [96]

Answer:

$-2\frac{3}{4}$

Step-by-step explanation:

Given: −9/4 + |−8/5| − 2 1/2

Rewriting: $-\frac{9}{4} + |-\frac{8}{5} |-2\frac{1}{2}$

Absolute value: $-\frac{9}{4} + \frac{8}{5} -2\frac{1}{2}$

Improper fractions: $-\frac{9}{4} + \frac{8}{5} -\frac{5}{2}$

Common denominators: $-\frac{45}{20} + \frac{40}{20} -\frac{50}{20}$

Solving from left to right: $-\frac{5}{20} -\frac{50}{20}$

Solving from left to right part two: $-\frac{55}{20}$

Simplifying: $-\frac{55}{20}= -\frac{11}{4} =-2\frac{3}{4}$

Answer: $-2\frac{3}{4}$

Hope this is correct and helps, have a nice day! :D

5 0

2 years ago

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