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3 years ago

True or False. When flipping a penny 14 times the penny likelihood of landing on heads is 7 times.

Mathematics

1 answer:

Elenna [48]3 years ago

5 0

Answer:

True

Step-by-step explanation:

Since a penny has head and tails, each has 1/2 chance to land on heads or tales, so 14*1/2=7, so true.

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What is the measure of the complement of an angle that measures 57°?

Scorpion4ik [409]

Complementary angles add up to 90 degrees.

The complement of 57 is (90 - 57) = 33 degrees.

7 0

3 years ago

Read 2 more answers

Let t(x) = 3x-8 and s(t(x)) = x^2 + 3x - 2. Find s(1).

ratelena [41]

<h3>Answer: 16</h3>

=============================================================

Explanation:

Equate s(t(x)) and s(1) to find that t(x) = 1 must be the case.

Let's find what x must be.

t(x) = 3x-8

1 = 3x-8

1+8 = 3x

9 = 3x

3x = 9

x = 9/3

x = 3

So plugging x = 3 into t(x) gets us t(x) = 1

In other words, t(3) = 1

So that tells us s(t(3)) = s(1)

-------------

Let's plug x = 3 into the s(t(x)) equation

s(t(x)) = x^2 + 3x - 2

s(t(3)) = (3)^2 + 3(3) - 2

s(1) = 9 + 3(3) - 2

s(1) = 9 + 9 - 2

s(1) = 18 - 2

s(1) = 16

7 0

3 years ago

What is the x intercept of y= 4x+8

ankoles [38]

To find the x-intercept what you do is you plug in zero for Y:
0=4x-8
Then you would add 8 to the left side and x =2

7 0

3 years ago

PLEASE HELP ME ...........Julie was looking at the architect's blueprint of her house. The scale on blueprint was 1/4 inch = 1 f

MAVERICK [17]

Answer:

On the blueprint the dimensions are <u>48 inches by 64 inches</u>.

Step-by-step explanation:

Given:

The scale on blueprint was 1/4 inch = 1 foot.

The actual dimensions of her bedroom are 12 feet by 16 feet.

Now, to find the dimensions on the blueprint.

Let the dimensions on the blueprint be $x$ by $y.$

As, given the scale on blueprint:

$\frac{1}{4}\ inch=1\ foot$

So, $\frac{1}{4}\ inch$ is equivalent to 1 foot.

Thus, $x$ is equivalent to 12 feet.

And, $y$ is equivalent to 16 feet.

Now, solving by cross multiplication method:

$\frac{\frac{1}{4}}{1} = \frac{x}{12}$

$\frac{4}{1} =\frac{x}{12}$

<em>By cross multiplying we get:</em>

$48=x$

$x=48\ inches.$

Now, again:

$\frac{\frac{1}{4}}{1} =\frac{y}{16}$

$\frac{4}{1} =\frac{y}{16}$

<em>By cross multiplying we get:</em>

$64=y$

$y=64\ inches.$

Therefore, on the blueprint the dimensions are 48 inches by 64 inches.

6 0

3 years ago

Solve for x. x/2≥−4<br> plz i need help!

Leto [7]

Answer:

x= -8

Step-by-step explanation:

x/2 is greater than of equal to -4

hence

x/2=-4

x=-4*2= -8

7 0

3 years ago