Carol sold twice as many magazine subscriptions as Jennifer. If Carol and Jennifer sold 90 subscriptions in all, how many subscriptions did Carol sell?

Answers

Answer 1

Answer: carol would have sold 60 magazine subscriptions while Jennifer had sold 30 magazine subscriptions

Related Questions

A photocopy was made of julie's watercolor painting. the photocopy resized the painting so that it measured 4 inches wide by 7 inches long. if the actual painting is 16 inches wide, what is the length A.28 inches B.9.14 inches C.38 inches D.64 inches
What can multiply to get -36 and add to get -40
which statement could be used to explain why f(x) = 2x – 3 has an inverse relation that is a function? a. the graph of f(x) passes the vertical line test. b. f(x) is a one-to-one function. c. the graph of the inverse of f(x) passes the horizontal line test. d. f(x) is not a function.
Factorise 15x + 35y - 40 z
A runner has a track lap of one minute while at a run, five minutes while at a jog, 7 minutes while at a walk. If 2/5 of the lap is paced at a run, 1/2 at a jog and 1/10 at a walk what is the total track lap time of the runner. Write the solution as a mixed number or a fraction in lowest terms

A grocer stacks oranges in a four-sided pyramid that is 7 layers high. How many oranges are in the pile? A.504 B.840 C.140 D.120

Answers

Answer:

Option C. 140

Step-by-step explanation:

Base of a pyramid which has four triangular sides is four sided.

If pyramid contains seven layers of oranges then the layer at the bottom will have 7 oranges.

Since base is a square then other side of the square base will have the same number of oranges = 7.

Therefore number of oranges at the first layer will be = 7×7

Similarly other layers above this layer will have the same sequence

6×6, 5×5, 4×4, 3×3, 2×2, 1×1

Therefore total number of oranges = 7×7 + 6×6 + 5×5 + 4×4 + 3×3 + 2×2 + 1×1 = 49 + 36 + 25 + 16 + 9 + 4 + 1 = 140

Option C. 140 is the answer.

A grocer stacks oranges in a four-sided pyramid that is 7 layers high. Many oranges are in the pile are C.140

Further explanation

The orange is the fruit of the citrus species Citrus and sinensis in the family Rutaceae, native to China. Orange is also called sweet orange, to distinguish it from the related Citrus and aurantium, referred to as bitter orange.

The proper name of four-sided pyramid is a "tetrahedron". The tetrahedron has the extra interesting property of having all four triangular sides congruent

1st Layer: The 1st layer contains only 1 orange so it has only 1 orange

2nd layer: The 2nd layer has total 4 oranges. Calculation: $2*2=4$

3rd layer: The 3rd layer has total 9 oranges. Calculation: $3 * 3 = 9$

4th Layer: The 4th layer has total 16 oranges. Calculation: $4 * 4 = 16$ .

5th layer: The 5th layer has total 25 oranges. Calculation: $5 * 5 = 25$

6th layer: The 6th layer has total 36 oranges. Calculation: $6 * 6 = 36$

7th layer: The 7th layer has total 49 oranges. Calculation: $7 * 7 = 49$ .

Sum of all layers:

$1+4+9+16+25+36+49 = 140$

Learn more

Learn more about oranges brainly.com/question/10744522
Learn more about pyramid brainly.com/question/10262815
Learn more about pile brainly.com/question/9094265

Answer details

Grade: 9

Subject: mathematics

Chapter: pyramid

Keywords: oranges, pyramid, four-sided, layers, pile

Solve the system of equations.5x + y = 9
3x + 2y = 4

A) (-2, 5)
B) (1, 4)
C) (2, -1)
D) (4, -4)

Answers

Answer:

Step-by-step explanation:

The given system of equations is :

$5x+y=9$ (1)

and $3x+2y=4$ (2)

Multiply equation (1) with 2 and then subtract equation (2) from it, we get

⇒ $10x+2y-3x-2y=18-4$

⇒ $7x=14$

⇒ $x=2$

Substitute the value of x=2 in equation (1), we get

⇒ $5(2)+y=9$

⇒ $10+y=9$

⇒ $y=-1$

Therefore, x=2 and y=-1. that is (2,-1).

you can find replcing x and y by the coordinates of the points
A : 5.-2 + 5 ≠9 not solution
B : 5.1 + 4 = 9 so 3.1 + 2.4 = 11 ≠4 not solution
C: 5.2 + = 9 so 3.2 + 2.-1 = 4 both are right then C is solution
D: 5.4 - 4 = 16 ≠ 9 not solution

Mr. and Mrs. Romero are expecting triplets. Suppose the chance of each child being a boy is 50% and of being a girl is 50%. Find the probability of each event. P(at least one boy anf one girl)

P(two boys and one girl)

P(at least two girls)

I don't care if you cab only answer one, I would very much appreciate it if you still answered that one instead of nothing.

Answers

Answer:

1) $\text{P(at least one boy and one girl)}=(3)/(4)$

2) $\text{P(at least one boy and one girl)}=(3)/(8)$

3) $\text{P(at least two girls)}=(1)/(2)$

Step-by-step explanation:

Given : Mr. and Mrs. Romero are expecting triplets. Suppose the chance of each child being a boy is 50% and of being a girl is 50%.

To Find : The probability of each event.

1) P(at least one boy and one girl)

2) P(two boys and one girl)

3) P(at least two girls)

Solution :

Let's represent a boy with B and a girl with G

Mr. and Mrs. Romero are expecting triplets.

The possibility of having triplet is

BBB, BBG, BGB, BGG, GBB, GBG, GGB, GGG

Total outcome = 8

$\text{Probability}=\frac{\text{Favorable outcome}}{\text{Total number of outcome}}$

1) P(at least one boy and one girl)

Favorable outcome = BBG, BGB, BGG, GBB, GBG, GGB=6

$\text{P(at least one boy and one girl)}=(6)/(8)$

$\text{P(at least one boy and one girl)}=(3)/(4)$

2) P(at least one boy and one girl)

Favorable outcome = BBG, BGB, GBB=3

$\text{P(at least one boy and one girl)}=(3)/(8)$

3) P(at least two girls)

Favorable outcome = BGG, GBG, GGB, GGG=4

$\text{P(at least two girls)}=(4)/(8)$

$\text{P(at least two girls)}=(1)/(2)$

Let's represent a boy with B and a girl with G

For example BBB is three boys and BGB is two boys and one girl.

These are all the possibilities

1) BBB

2) BBG

3) BGB

4) BGG

5) GBB

6) GBG

7) GGB

8) GGG

There is in total 8 different possibilities.

Now let's analyze the conditions

p (at least one boy and one girl)

That excludes only BBB and GGG so they are 6 possibilities out of 8

p = 6/8 = 3/4

p (two boys and one girl).

Those are 3 out of 8

p = 3/8

p (at least two girls)

Those are 3 (two girls) + 1(three girls) = 4

P = 4/8 = 1/2

Please, let me know if this was satisfactory for you.

What is the value of x?

Answers

Answer:

Step-by-step explanation:

X+y=X so the answers x

The value of x using the two rectangles is 8.

We have,

A rectangle is a 2-D shape with length and width.

The length and width are different.

If the length and width are not different then it is a square.

The area of a rectangle is given as:

Area = Length x width

Rectangle A:

Area

= length x width

= 6 x 4

=24 cm²

Rectangle B:

Area

= length x width

= 3x cm²

Now,

The area of both triangles is the same.

This means,

Area of first rectangle = Area of the second rectangle

24 = 3x

x = 24/3

x = 8

Thus,

The value of x using the two rectangles is 8.

Learn more about rectangles here:

brainly.com/question/15019502

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Five times a number is the same as 30 more than 8 times the number. Find the number.If n is "the number," which equation could be used to solve for the number?

3n = 30
5n + 8n = 30
5n = 8n + 30

Answers

Answer: the correct option is

(C) $5n=8n+30.$

Step-by-step explanation: Given that five times a number is the same as 30 more than 8 times the number.

We are to find the number.

Also, if the number is denoted by n, then we are to select the equation that could be used to solve for the number.

Since n is the given number, so five times the number is written as

$5* n=5n.$

Also, 30 more than eight times the number is written as

$8* n+30=8n+30.$

Since both the expressions are same, so we get

$5n=8n+30\n\n\Rightarrow 8n-5n=-30\n\n\Rightarrow 3n=-30\n\n\Rightarrow n=-(30)/(3)\n\n\Rightarrow n=-10.$

Thus, the required number is -10 and the the equation that is used to solve for the number is $5n=8n+30.$

Option (C) is CORRECT.

Its the last one .. 5n=8n + 30

In a survey, 15 high school students said they could drive and 15 said they could not. Out of 60 college students surveyed, 30 said they could drive. Micah concluded that if someone is in college, that means the person is more likely to drive. Is Micah’s conclusion correct? Explain

Answers

No, Micah is not correct. Since there are equal numbers of people in each group who drive and who do not drive, the relative frequency for each is 50%. Because the relative frequencies are the same, there is no association between the variables.

Based on the survey figures by Micah of the college students who could drive, we can infer that Michah's conclusion is not correct.

Why is Michah not correct?

Out of 60 college students surveyed, only 30 said they could drive. This means that only 50% could drive:

= 30 / 60

= 50%

A 50% relative frequency is not good enough to make the conclusion that one is more likely to drive in college. Rather it means that they are equally likely to drive or not to drive.

Find out more on relative frequency at brainly.com/question/3857836.

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