Solve. Use the discount equation
S = R − rR, where S is the sale price, R is the regular price, and r is the discount rate.

An exercise bike is on sale for $320, having been marked down 20% off the regular price. Find the regular price.

Answer:

since it says 2 trays can be bake in the same amount of time as one tray that gives us a clue that she bakes 2 trays each 16 minutes with is 32 minutes for 4 trays instead of 2 trays.

each 16 minutes is 2 trays and 32 minutes is 4 trays of cookies.

Answer:

a x a x a x a x a x a x a

Step-by-step explanation:

a^3 is three a's being multiplied by each other. a^4 is four a's being multiplied by each other

Answer: Yes maybe for about 3-4 days then they will fall off

Step-by-step explanation: my little sis did it

Answer:

translation of 8 units to the left

Step-by-step explanation:

the x coordinate change by -8 so that is 8 units to the left

The volume of the igloo given its dimensions to the nearest tenth is  134.10 m³.

An hemiphere is the half of a sphere. A sphere is the 3-dimensional equivalent of a ciricle.

Volume of a hemisphere = (2/3) x (π) x (r³)

2/3 x 4³ x 22/7 = 134.10 m³

To learn more about the volume of a hemisphere, please check: https://brainly.com/question/268403

Answer:

Step-by-step explanation:

\text{Volume of hemisphere}=

Volume of hemisphere=

\,\,\frac{1}{2}\cdot \frac{4}{3}\pi r^3

2

1

​

⋅

3

4

​

πr

3

hemisphere = half of a sphere

=

=

\,\,\frac{2}{3}\pi r^3

3

2

​

πr

3

Simplify by multiplying

=

=

\,\,\frac{2}{3}\cdot \pi \cdot (6.4)^3

3

2

​

⋅π⋅(6.4)

3

Substitute

=

=

\,\,549.033109...

549.033109...

Evaluate in calculator

\approx

≈

\,\,549.0\text{ m}^3

549.0 m

3

Answer:

Step-by-step explanation:

First, you have to find the degress for m<A.

m<A+ 90+37=180

m<A+ 127=180

then you subtract 127 from both sides.

So, m<A= 53 degress, We already know that m<B is 90,

So let's solve for m<C.

m<C + 53+ 90= 180

m<C+ 143=180

m<C= 37 degress.

Since the triangles are both the same and has the same length and are congruent polygons

m<X=53 degress, m<Y= 90 degress, and m<Z= 37 degress

The prediction of a roll of 12 is the expected value of rolling a 12

Jenny can predict 15 as the number of times she will roll a 12

The dice is a 12-sided dice.

This means that the dice has 12 sides.

So, the probability of obtaining a 12 is:

P(12) = 1/12

In a roll of 180 times, the number of times a 12 is expected to show is:

E(x) = np

This gives

E(x) = 180 * 1/12

Evaluate the product

E(x) = 15

Hence, Jenny can predict 15 as the number of times she will roll a 12

Read more about expected values at:

https://brainly.com/question/15858152

Answer:

25/58

Step-by-step explanation: Ok, your step one should be to add all the previous customer values together to see what the total pool of values is. 13+50+53=116, this becomes your denominator. Then, you see that out of these 116 customers in the past week, 50 used a debit card. So based on this data, we can assume that 50 out of every 116 customers will use a debit card. The fraction is thus 50/116. Then it needs to be simplified. Divide the numerator and denominator by 2, and BAM 25/58 is your final answer.

Probability that next customer will pay with debit card is (25 / 58) (simplest fraction form).

" Probability is defined as the ratio of number of favourable outcomes to the total number of outcomes for a given event."

Formula used

Probability = [tex]\frac{Number of favourable outcomes}{Total number of outcomes}[/tex]

According to the question,

Given,

Number of customers paid through cash = 13

Number of customers paid through debit card = 50

Number of customers paid through credit card = 53

Total number of customers = 13 + 50 + 53

                                             = 116

Substitute the value in the formula we get,

Required probability =  (50 / 116)

                                   = (25 / 58) (simplest fraction form)

Hence, probability that next customer will pay with debit card is (25 / 58) (simplest fraction form).

Learn more about probability here

https://brainly.com/question/11234923

#SPJ2

Answer: 2

Step-by-step explanation:

8 - 4 = 4

5 - 3 = 2

4/2 = 2

Answer:

Step-by-step explanation:

the rate of change or slope from the given two points is rise over run.

(3, 4) (5, 8)

slope = (y2 - y1) / (x2 - x1)

         = (8 - 4) / (5 - 3)

         = 4 / 2

         = 2

Answer:

Answer

4.0/5

7

author link

babitakumarishk1612

Expert

82 answers

25.8K people helped

Answer:

0.45 x 60 = 27

35% x 60 = 21

27-21 = 6 more students prefer math

However, a further 12 students didn't specify whether they prefer maths or science, so you could argue that the answer is 6 +/- 12

Answer:

2x+3y=11. x=4 and y=1.

10x+5y=20. x=1 and y=2.

Answer and Step-by-step explanation:

Solution:

Develop hypothesis:

H₀ : µ ≥ 1056

H₁ < 1056

Given:

n = 400

ẋ = 910

∂ = 1600

a = 0.05

The sampling distribution of sample means µ and standard deviation ∂ / √n.

Z = ẋ-µ /∂ / √n.

  = 910 – 1056 / 1600 /√400.

 = - 1.83

Probability: p = p(z< -1.83) = 0.033

At a = 0.05

If p value is smaller than significance level a, then hypothesis is rejected.

P < 0.05 its means H0 rejected.

Hypothesis test using critical value:

The critical value corresponding to probability of 0.05:

Z = -1.645

The rejection region, then contains all values smaller than -1.645.

If value of test statistics is within the rejection region, then null hypothesis rejected.

-1.83 < -1.645

Rejected H

56,51,52,53,55,59,57

Step-by-step explanation:

[tex]v = ypu \\ v = y \times p \times u \\ dividing \: both \: sides \: by \: p \times u \\ we \: get \\ \frac{v}{p \times u} = \frac{y \times p \times u}{p \times u} \\ by \: simpliphying \\ \frac{v}{pu} = y \\ hence \\ y = \frac{v}{pu} [/tex]

Answer:

No

Step-by-step explanation:

No because if you have 38 on the bottom, 20 and 16 do not add up to 39 or more.

Answer and Step-by-step explanation:

To solve for x, we need to look at 2 deciding factors that allows us to be able to find x.

We are given 2 parallel lines, denoted by the arrow pointing right on the end of both of them, and a transversal line that cuts through the two lines. Because the lines are parallel, the angles that are formed by the transversal like will be equal or correspondent to each other in a few ways.

For the angles we are given, the angles are on the same side of the transversal line, and on the top of their respective parallel lines. Because of this, the angles are equal to each other.

To solve, set the two angles equal to each other.

4x + 20 = 2x + 60

Subtract the 2x from both sides of the equation.

2x + 20 = 60

Subtract the 20 from both sides of the equation.

2x = 40

Divide both sides by 2.

x = 20

x is equal to 20.

#teamtrees #PAW (Plant And Water)

I hope this helps!

Given -

two parallel lines with a transversal.

To find -

to find the value for x.

Concept applied -

Here in the figure, these two angles let's say 1 = 4x + 20° and 2 = 2x + 60° are corresponding angles. And we know that corresponding angles are equal. As all these angles that have the same position in leu the parallel lines and the transversal are corresponding pairs. Therefore, 1 = 2

Solution -

➙ 4x + 20° = 2x + 60°

➙ 4x - 2x = 60° - 20°

➙ 2x = 40°

➙ x = 40°/2

➙ x = 20°

Henceforth, the value of x = 20°.

Answer:

Step-by-step explanation: 37/56

Answer:

54

Step-by-step explanation:

First we multiply 6 x 9 to get 54 so that's all.

Answer:

See below.

Step-by-step explanation:

(6/4)2

6/4=1.5

1.5*2=3

-hope it helps

Answer:

3

Step-by-step explanation:

Divide 6 by 4

The answer is 1 R 5, because ↓

4 goes into 6 one time.

However, the 5 comes from a different level of diverse multiplication. We will skip past that concept for now.

If there is a number outside parentheses without a symbol, that usually means multiply.

[tex]1.5 * 2 = 3[/tex]

Therefore, the answer is 3.

Answer: $6

Step-by-step explanation: I'm assuming that Joe bought the pizza and drink with his own money since it doesn't say that they divided the price. Since his drink was $3, that means that the pizza must have been $6.

• State whether the figure appears to have line symmetry. Write yes or no. If so, draw all lines of symmetry and state their number.

•State whether the figure has rotational symmetry. Write yes or no. If so, locate the center of symmetry, and state the order and magnitude of symmetry.

Line 2 presents the error for the solution presented because the square of numbers: 14 and 8 was calculated incorrectly.

This law can be applied when two sides of the triangle and the angle formed for these sides are known. Therefore, from the law of cosines, it is possible to write the relation between sides and their respective cosines. See below:

                           [tex]c^2=a^2+b^2-2*a*b*cos(C)[/tex]

For solving this question, you should apply the Law Cosines and after that compare your solution with this exercise. From the comparison, you should identify the mistake for the solution presented in this problem.

                 [tex]c^2=a^2+b^2-2*a*b*cos(C)\\ \\ c^2=14^2+8^2-2*14*8*cos(80)\\ \\ c^2=196+64-224*0.1736\\ \\ c^2=196+64-38.8864\\ \\ c^2=221.1136\\ \\ c=\sqrt{221.1136}=14.9[/tex]

He made the error in line 2. Instead of calculating the square of 14 and 8, he multiplied these numbers by 2. This was the error.

Read more about the law cosines here:

https://brainly.com/question/7872492

Answer:

l don't understand your question

Step-by-step explanation:

you should have measured the lengths of the sides and added that information here to the picture.

because we here cannot measure this from a picture that is inclined and has no size scale.

I can give you a hint how to get the angles, when you have all 3 sides :

start with the extended Pythagoras for non right-angled triangles:

c² = a² + b² - 2ab×cos(C)

with c being the side opposite of the angle you are aiming for.

then

2ab×cos(C) = a² + b² - c²

cos(C) = (a² + b² - c²)/(2ab)

for example, to get the angle at T, its opposite side is SE.

cos(T) = (ST² + ET² - SE²)/(2×ST×ET)

you can do the same thing for all 3 angles (you need to always pay attention to what sides you have to use in what combination for the angle).

or you can switch after getting the first angle to the laser of sine :

a/sin(A) = b/sin(B) = c/sin(C)

where the sides and the disposing angles are always opposite of each other.

for your triangle that looks like

ET/sin(S) = ST/sin(E) = SE/sin(T)

from there (once you have one angle via the Pythagoras approach) you get all other angles.

Explanation:

We cannot have zero in the denominator. If x = 0, then the denominator 6x becomes 6x = 6*0 = 0. So we must exclude this from the domain to avoid a division by zero error.

One could argue that the 'x's cancel out when we divide. Yes that's true and [tex]\frac{5x}{6x} = \frac{5}{6}[/tex], but as far as the calculator is concerned, it will not try to simplify the expression (unless it's a specific type of calculator). Instead, the calculator would likely follow the order of operations PEMDAS to try to compute directly. The calculator would hit the stumbling block of dividing by zero and produce "undefined" or "not a number".

Step-by-step explanation:

given f(x) = 2/x and g(x) = 2/x

f(g(x)) = 2/(g(x)) = 2/2/x = x/2 × 2 = x

g(f(x)) = 2/(f(x)) = 2/2/x = x/2 × 2 = x

therefore they are inverses

since f(g(x)) = g(f(x)) = x.