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3 years ago

A density curve for all the possible temperatures between 0°F and 20°F is a

Mathematics

1 answer:

Mama L [17]3 years ago

8 0

The answer is A. Hope this helps

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PLS, I NEED HELP DUE IN 3 HOURS! 25 POINTS

Bad White [126]

Answer:

Step-by-step explanation:

y = 6x + 3 Step-by-step explanation:Givenx = {5, 6, 7, 8, 9}

7 0

3 years ago

a rectangle has a length of (x+3) centimeters and a width of 1/2x centimeters. If the perimeter is 24 centimeters, what is the l

bogdanovich [222]

Answer:

The length of the rectangle is 9 cm

Step-by-step explanation:

Given: The length of rectangle(l) = (x+3) cm and a width of rectangle (w) = $\frac{1}{2} x$ cm a

Also, perimeter of rectangle is 24 cm.

Perimeter of rectangle is to add the lengths of all the four sides.

Perimeter of rectangle (P) is given by;

P=2(l+w)

Substituting the value of P = 24 cm , l = (x+3) cm and w = $\frac{1}{2} x$

then,

$24 = 2 (x+3+\frac{1}{2} x)$

Divide by 2 both sides of an equation;

$12 = x+3+\frac{1}{2}x$

Combine like terms;

$12 =\frac{3x}{2} +3$

Subtract 3 from both the sides we get;

$12-3 = \frac{3x}{2} +3-3$

Simplify:

$9 =\frac{3x}{2}$

Multiply both sides by $\frac{2}{3}$ we get

$x = 9 \times \frac{2}{3} = 3 \times 2 = 6$

Therefore, length of rectangle(l) = (x+3) = 6+3 = 9 cm

6 0

3 years ago

Twenty percent of all undergraduates at a university are chemistry majors. In a random sample of six students, find the probabi

tamaranim1 [39]

The probability that 4 are chem majors would be 5%

6 0

3 years ago

Dr. Steve is working with a new radioactive substance in his lab. He currently has 64 grams of the substance and knows that it d

4vir4ik [10]

Remember that the general decay equation is:
$y=A(1-r)^{x}$
where
$y$ is the amount after a time $x$
$A$ is the initial amount
$r$ is the the decay percent in decimal form

The first ting we are going to do is find $r$ by dividing our <span>decay rate of 25% by 100%: </span> $r= \frac{25}{100} =0.25$ .
We also know from our problem that $y=64$ . Lets replace $y$ and $r$ in our formula:
$64=A(1-0.25)^{x}$
$64=A(0.75)^{x}$
We know now that our decay rate is 0.75, and since 0.75<1, we can conclude that this situation represents exponential decay.

Now, to find the initial amount, we are going to solve our equation for $A$ :
$64=A(0.75)^{x}$
$A= \frac{64}{0.75 ^{x} }$
Notice that $A$ will depend on the number of ours $x$ . <span />

4 0

3 years ago

Read 2 more answers

A cube has a side length of 6 cm. What is the volume of the cube, in cubic centimeters

Lady_Fox [76]

Answer:

V=216cm³

Step-by-step explanation:

V=216cm³

3 0

3 years ago