need help with my math checking it over just making sure its right please help it is a lot!

Your answer would be 25%.

Assuming the coin is not biased, the probability of flipping a heads or tails is 1/2 equally. This remains the same no matter how many times you flip the coin, because the outcome of one flip does not affect the outcome of another.

This means that the probability of getting a tails the first flip is 1/2, and the probability of then getting a heads is also 1/2, so to find the probability of both happening you need to multiply these probabilities together, and 1/2 × 1/2 = 1/4, and 1/4 as a percentage is 25%.

I hope this helps! Let me know if you have any questions :)

Correct answers are

<BDE

<EDF

Answer:

A(x) = 6.2 - 0.005x

Step-by-step explanation:

If you think about it, either 0.5/0.005 needs to be equal to 0.5%

0.5 is the same as 1/2 and therefore it is the same as 50%

So it must be 0.005!

Tip: I always just divide by 100 to get the decimal, it is a nice, easy and quick method

Answer:

94.2 inches.

Step-by-step explanation:

First, I just want to clarify that [tex]\pi[/tex] is actually spelled pi, not pie, like the pie you eat.

Finding the circumference is pretty easy. It is just the diameter times pi.

So if the diameter is 30 inches, and we use 3.14 for pi, then the circumference of the sign would be 94.2 inches.

Hope this helps!

Answer:

[tex] F = mt +b[/tex]

From the info given we know that m =-11 and we have a condition given:

[tex] F =90 , t =4[/tex]

Using this condition we have:

[tex] 90 = -11*4 +b[/tex]

And solving for b we got:

[tex] 90 +4*11 = 90 +44= 134[/tex]

So then the original temperatue for this case is 134 F

Step-by-step explanation:

For this case we know that after four hours the temperature was 90 f and the temperature dropped 11 f per hour.

We can use a linear model to solve the problem given by:

[tex] F = mt +b[/tex]

Where F represent the temperature, t the time in hours and m the slope and b the intercept.

From the info given we know that m =-11 and we have a condition given:

[tex] F =90 , t =4[/tex]

Using this condition we have:

[tex] 90 = -11*4 +b[/tex]

And solving for b we got:

[tex] 90 +4*11 = 90 +44= 134[/tex]

So then the original temperatue for this case is 134 F

Answer:

A ... [tex]\frac{3}{4} (\frac{4}{3})x=-6 (\frac{4}{3})[/tex]

Step-by-step explanation:

Multiplying 4/3 on both sides gets x by itself

Answer:

B

Step-by-step explanation:

B. Wendy leaves school to go home. She walks 60 yards north and then 80 yards west. She is 10 yards from the school.

got it right on edge

Answer:

5 units

Step-by-step explanation:

Using the distance formula:

[tex]AB=\sqrt{(-3-(-8))^2+(-6-(-6))^2}=\sqrt{5^2}=5[/tex]

Hope this helps!

Answer:

2.97

Step-by-step explanation:

8.8 = 4 *2.2 = 4 * 220/100

220 = 4 *55

8.8 = (4 *4*55)/100 = 16 *55/100

[tex]\sqrt{8.8} =\sqrt{(16 * 55)}/\sqrt{100\\}[/tex]

[tex]\sqrt{8.8}= \frac{4}{10}*\sqrt{55}[/tex]

≈[tex]\sqrt{8.8} = 0.4 * 7.416 = 2.9664 \\2.97[/tex]

Answer:

m∠H=66°

Step-by-step explanation:

Since Quadrilateral EFGH is inscribed in a circle, it is a Cyclic quadrilateral.

Theorem: Opposite Angles of a Cyclic Quadrilateral are Supplementary.

Angles F and H are opposite angles of a cyclic quadrilateral and by the theorem above:

m∠F+m∠H=180 degrees

114° +m∠H=180°

m∠H=180° -  114°

m∠H=66°

Answer:

28.26 square feet

Step-by-step explanation:

A=πr²

A=(3.14)(3)²=28.26 square feet

Answer:

ACB=61°, BAC=58°, AEF=65°

Step-by-step explanation:

C = 122°, 180-122=58° ACB= 122°÷2=61°

61°+61°+A=180, hence 58°

65 because of opposite angles, they are equal

Answer:

x = 21, y = 2

Step-by-step explanation:

4x- 3y = 78....(1)

2x + 3y = 48 ...(2)

Adding eqiautions (1) and (2)

4x- 3y = 78

2x + 3y = 48

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

6x + 0 = 126....(Here y has been eliminated)

6x = 126

[tex] x= \frac{126}{6}\\\\

\therefore x = 21\\[/tex]

Plugging x = 21 in equation (2) we find:

2 * 21 + 3y = 48

42 + 3y = 48

3y = 48 - 42

3y = 6

[tex] y= \frac{6}{3}\\\\

\therefore y = 2\\[/tex]

Answer:

it is -1x2

Step-by-step explanation:

by the ex variable u will get it

Answer: Elizabeth earned $7270.91.

Step-by-step explanation:

The formula given to us is the formula for compounded interest.

You can substitute the values given in the first part of the problem into the equation to find B, the final amount:

[tex]B = p*(1+r)^t\\\\B = 4530 * (1 + 0.11)^5[/tex]

Note that 11% interest is expressed as 0.11 because it is a percentage of a whole number.

Now, use a calculator to raise 1.11 to the fifth degree to get this:

[tex]B = 4530 * 1.605058\\B = 7270.912[/tex]

As such, Elizabeth earned $7270.91 in interest after 5 years.

Answer:

x = 6 or x = -7

Step-by-step explanation:

Solve for x over the real numbers:

x^2 + x - 42 = 0

The left hand side factors into a product with two terms:

(x - 6) (x + 7) = 0

Split into two equations:

x - 6 = 0 or x + 7 = 0

Add 6 to both sides:

x = 6 or x + 7 = 0

Subtract 7 from both sides:

Answer: x = 6 or x = -7

Answer:

150 miles

Step-by-step explanation:

8/2 = 4

4x37.5 = 150

Answer:

Correct answer is D. ASA

Step-by-step explanation:

Let us first define ASA congruence rule:

2 triangles are called congruent according to ASA congruence rule if 2 angles of the triangle and the corresponding side between these two angles are equal to each other.

In the question figure, we can figure out following conclusions from Triangles [tex]\triangle SRT\text{ and }\triangle WXY[/tex] respectively:

As per the definition of option d) ASA congruence, the triangles are congruent.

Answer:

Step-by-step explanation:

Answer:

x-intercept (-7,0)

y-intercept (0,2)

Step-by-step explanation:

Answer:

x-intercept (-7 , 0)

y-intercept (2 , 0)

x intercept is where on the x - aces a point is sitting on on the line

--------------------------     <--- this one is x

y intercept is where on the y- aces a point is sitting on the line

║    <---- this one is y

Answer:

After 3 months, Simon will be able to pay off his loan with the money he holds at his savings account.

Step-by-step explanation:

ending loan's principal balance = beginning loan's principal balance - number of months x $300

or we can simplify it:           l₁ = l₀ - 300x ⇒ l₁ = 3,300 - 300x

l₁ = ending loan's principal balance

x = number of months

ending savings account balance = beginning savings account balance + number of months x $600

or we can simplify it:         s₁ = s₀ + 600x ⇒  s₁ = 1,000 + 600x

s₁ = ending savings account balance

x = number of months

account balances for months

                                    month 1        month 2         month 3         month 4

boat loan                     $3.000         $2,700          $2,400           $2,100

savings account          $1,600         $2,200          $2,800           $3,400

Answer:

y equals 300x plus 3300

Step-by-step explanation:

Answer:

Speed of boat in still water = 28 miles/hr

Speed of current = 4 miles/hr

Step-by-step explanation:

Speed upstream, u = 96/4 = 24 miles/hr

Speed downstream, v = 96/3 = 32 miles/hr

Speed of boat in still water = ½(v+u)

= ½ (24 + 32) = 28 miles/hr

Speed of the current = ½ ( v - u)

= ½ (32 - 24) = 4 miles/hr

Answer:

2/3 < 1 3/4

Step-by-step explanation:

2/3 is less than 1 3/4

2/3 as a decimal is 0.6666667

1 3/4 as a decimal is 1.75

So, 1.75 is more than 0.6666667

Answer:

B. $175,200

Step-by-step explanation:

Monthly payment

Number of payments

Total cost of the loan is:

Correct answer choice is: B

Answer:

Hello, the total cost of the loan is $175,200 i have the same question on my previous exam and did the work to double check

Answer:

the volume of sand is [tex]50 ft^{3}[/tex]

Step-by-step explanation:

This problem bothers on the mensuration of solid shapes, rectangular prism.

Given data

[tex]Length l= 4 ft Width w= 5ft\\Height h = 3ft[/tex]

if the sandbox is filled with sand of [tex]2\frac{1}{2 } ft[/tex] deep the volume of the sand in the box will be calculated based on the the depth of the sand

converting the depth of sand from mixed fraction to proper fraction we have [tex]2\frac{1}{2} = \frac{5}{2}[/tex]

the expression for the volume of a rectangular prism is

[tex]volume of sand = length * width* height[/tex]

substituting our data into the expression we have

[tex]volume of sand= 5*4 * \frac{5}{2} \\volume of sand = \frac{100}{2} \\volume of sand = 50 ft^{3}[/tex]

Answer:

the closest i got is [tex]\frac{43-24x}{2x-5}[/tex]

Step-by-step explanation:

Answer:

1st option.

[tex]\sum_{k=1}^{6} \frac{1}{2k-1}[/tex]

Step-by-step explanation:

The given sequence is as follows:

[tex]1 + \dfrac{1}{3}+ \dfrac{1}{5}+ \dfrac{1}{7}+ \dfrac{1}{9}+ \dfrac{1}{11}[/tex]

Here, we can see that the denominator is in AP and the sequence is:

1, 3, 7, 9, 11

first term, a  = 1

Common difference, d = 2

We know that nth term for an AP:

[tex]a_n = a+(n-1)d[/tex]

where a is the first term and

d is the common difference.

So, nth term for above AP:

[tex]a_n = 1+(n-1)\times 2\\\Rightarrow 2n-1[/tex]

Here, we have 'k' in place of 'n':

[tex]a_k = 2k-1[/tex]

And as per the given sequence in the question, the kth term is simply the reciprocal:

i.e. [tex]\dfrac{1}{2k-1}[/tex]

and sum is to be done up to k = 6 from k = 1.

Hence, the summation notation for the sequence

[tex]1 + \dfrac{1}{3}+ \dfrac{1}{5}+ \dfrac{1}{7}+ \dfrac{1}{9}+ \dfrac{1}{11}[/tex]

is:

[tex]\sum_{k=1}^{6} \frac{1}{2k-1}[/tex]

Answer:

∠A ≈ 71.57

Step-by-step explanation:

You use inverse tangent since it gives you the opposite and adjacent sides: [tex]tan^-1[/tex]

[tex]tan^-1(9/3)[/tex]

≈ 71.565

Round to nearest hundredth:

≈ 71.57

Answer:

They are already in standard form.

Step-by-step explanation:

Answer:

I think that you need to add obvoiusly.

12351 Thats what I got. But Im not sure if its correct. I hope his helps

Step-by-step explanation:

Answer:

16383

Step-by-step explanation:

12288+3072+767+192+48+12+3 =