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2 years ago

I need help on this math question before I go to bed

Mathematics

1 answer:

Ymorist [56]2 years ago

7 0

Answer:

divide 8 by 4

multiply 8 and 34

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Does secondhand smoke increase the risk of a low weight birth? A baby is “low birth weight” if it weighs less than 5.5 pounds at

11111nata11111 [884]

Answer:

H0: p = 0.078

Ha: p ≠ 0.078

Step-by-step explanation:

The researchers say that the rate is about 7.8%, or 0.078 as a decimal. That makes that the null hypothesis because using "is" in math is the same as saying "equals" and the null hypothesis always has the statement of equality in it. The reason there is a not equals to sign in the alternate is for this reason as well. The researchers say it is about that amount, not more or less than that amount. So it makes this a 2 tailed test. If the amount is significantly higher or lower, then we might have to reject the null hypothesis depending on the outcome of the test.

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3 years ago

Of 500 new electronic products, 280 were intended for people over the age of 16, and 320 used a rechargeable battery. Of those p

skad [1K]

Answer:

450/500 = 0.9sorry if it's wrong

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers

Find the volume of a cylinder with a radius of 3 meters and a height of 13 meters. Use 3.14 The volume of the cylinder is Type a

zvonat [6]

<h2><u>Question</u>:-</h2>

Find the volume of a cylinder with a radius of 3 meters and a height of 13 meters.

<h2><u>Answer</u>:-</h2>

<h3>Given:-</h3>

$\bullet$ Radius (r) of a cylinder = 3 meters.

$\bullet$ Height (h) of a cylinder = 13 meters.

The volume of a cylinder.

<h2>Solution:-</h2>

We know,

Formula of Volume of a cylinder is πr²h.

So, Volume of a cylinder = 3.14 × (3)² × 13

Volume of a cylinder = 3.14 × 3 × 3 × 13

Volume of a cylinder = 367.38 cubic meters.

<h3>The volume of a cylinder is <u>3</u><u>6</u><u>7</u><u>.</u><u>3</u><u>8</u><u> </u><u>cubic </u><u>meters</u>. [Answer]</h3>

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2 years ago

What part of students like lemonade

Sphinxa [80]

Probably 23 not sure

7 0

3 years ago

Can someone help with this math problem

katrin [286]

Answer:

20 ft long; 12 ft wide

Step-by-step explanation:

Let w = the width of the garden

Then l = w + 8

A = lw

A = (w + 8)w

=====

The sidewalk is 4 ft wide, so, for the big rectangle consisting of garden plus sidewalk:

Width = w +8

Length = w + 16

Area = (w + 8)(w + 16)

=====

The <em>difference</em> between the two areas is the area of the sidewalk (320 ft²).

(w + 8)(w + 16) - (w + 8)w = 320 Factor out w + 8

(w+ 8)(w + 16 – w) = 320 Combine like terms

(w+ 8) × 16 = 320 Divide each side by 16

w + 8 = 20 Subtract 8 from each side

w = 12 ft

l = 12 + 8

l = 20 ft

The garden is 20 ft long by 12 ft wide.

4 0

2 years ago