1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Solnce55 [7]
2 years ago
15

The price of 2 dozen cobs of corn (which is 24 cobs) is $7.20. Joanna want to buy just 3 cobs of corn. How much will she pay? in

unit rate
Mathematics
1 answer:
dlinn [17]2 years ago
5 0

Answer:

 

Step-by-step explanation:

You might be interested in
The two-way table given shows the results from a survey of pet owners.
astraxan [27]
There is a strong, positive association
3 0
2 years ago
Please help what are the slope and the y intercept of the linear function that is represented by the table?
miv72 [106K]

Answer:

The slope is -2, the y-intercept is 12

Step-by-step explanation:

slope (m) = \frac{y_2 - y_1}{x_2 - x_1}

Chose any two coordinates pair. Let's make use of:

(0, 12) = (x_1, y_1)

(3, 6) = (x_2, y_2)

Thus,

slope (m) = \frac{6 - 12}{3 - 0}

slope (m) = \frac{-6}{3}

slope (m) = -2

Using the slope-intercept equation, find the y-intercept, b, as follows:

y = mx + b

Use any coordinate pair as x and y, then solve for b.

Let's use (3, 6)

6 = (-2)(3) + b

6 = -6 + b

Add 6 to both sides

6 + 6 = - 6 + b + 6

12 = b

The slope (m) of the linear function that is represented by the table is -2, while the y-intercept (b), is 12.

4 0
3 years ago
Prove that this question:.​
Vikki [24]

This follows directly from the double angle identity for cosine and the Pythagorean identity:

\cos2\theta=\cos^2\theta-\sin^2\theta=\begin{cases}2\cos^2\theta-1\\1-2\sin^2\theta\end{cases}

So we have

\dfrac{1-2\sin^2\theta}{2\cos^2\theta-1}=\dfrac{\cos2\theta}{\cos2\theta}=1

8 0
3 years ago
Solve each equation. Check your solution.<br> 4t - 2 = 14
anyanavicka [17]
T = 4. first, you can add 2 to both sides of the equation. you get 4t = 16. then, you can divide both sides by 4 to isolate t.
3 0
2 years ago
Read 2 more answers
The earth has a mass of approximately 6\cdot 10^{24}6⋅10 24 6, dot, 10, start superscript, 24, end superscript kilograms (\text{
Alex_Xolod [135]

Answer:

0.02

Step-by-step explanation:

The volume of the earth's oceans is approximately 1.34\cdot 10^{9}1.34⋅10

9

1, point, 34, dot, 10, start superscript, 9, end superscript cubic kilometers (\text{km}^3)(km

3

)left parenthesis, start text, k, m, end text, cubed, right parenthesis, and ocean water has a mass of about 1.03 \cdot 10^{12}\,\dfrac{\text{kg}}{\text{km}^3}1.03⋅10

12

 

km

3

kg

​

1, point, 03, dot, 10, start superscript, 12, end superscript, start fraction, start text, k, g, end text, divided by, start text, k, m, end text, cubed, end fraction .

To simplify, we will use the product of powers property of exponents that says that x^a\cdot x^b = x^{a+b}x

a

⋅x

b

=x

a+b

x, start superscript, a, end superscript, dot, x, start superscript, b, end superscript, equals, x, start superscript, a, plus, b, end superscript.

\qquad 1.34\cdot 10^{9}\,\cancel{\text{km}^3} \cdot 1.03 \cdot 10^{12}\,\dfrac{\text{kg}}{\cancel{\text{km}^3}} = 1.3802 \cdot 10^{21}\,\text{kg}1.34⋅10

9

 

km

3

⋅1.03⋅10

12

 

km

3

kg

​

=1.3802⋅10

21

kg1, point, 34, dot, 10, start superscript, 9, end superscript, start cancel, start text, k, m, end text, cubed, end cancel, dot, 1, point, 03, dot, 10, start superscript, 12, end superscript, start fraction, start text, k, g, end text, divided by, start cancel, start text, k, m, end text, cubed, end cancel, end fraction, equals, 1, point, 3802, dot, 10, start superscript, 21, end superscript, start text, k, g, end text

Hint #2

Next we want to know what portion of the earth's mass this represents. We have:

\qquad \begin{aligned} \dfrac{\text{mass of the oceans}}{\text{total mass of the earth}} &= \dfrac{1.3802 \cdot 10^{21}\,\text{kg}}{6\cdot 10^{24}\,\text{kg}} \\\\ &= \dfrac{1.3802}{6\cdot 10^{3}} \\\\ &= \dfrac{1.3802}{6000} \\\\ &= 0.0002300\overline{3} \end{aligned}

total mass of the earth

mass of the oceans

​

​

 

=

6⋅10

24

kg

1.3802⋅10

21

kg

​

=

6⋅10

3

1.3802

​

=

6000

1.3802

​

=0.0002300

3

​

To convert this to a percent, we multiply by 100100100, so the oceans represent 0.02300\overline{3}\%0.02300

3

%0, point, 02300, start overline, 3, end overline, percent of the earth's total mass, according to these figures.

Hint #3

To the nearest hundredth of a percent, 0.020.020, point, 02 percent of the earth's mass is from oceans.

6 0
3 years ago
Other questions:
  • Mrs. Li wants to compare her students’ test scores to the school average. She created a table to help her. Mrs. Li’s Student Tes
    14·3 answers
  • I need help pls i have to be done by 2
    6·1 answer
  • Please figure out:):):):):):):)
    12·2 answers
  • ne angle in a triangle has a measure that is three times as large as the smallest angle. The measure of the third angle is 50 de
    12·1 answer
  • Write an equation of 6x with a discount of 15%
    13·1 answer
  • How many degrees are in 3pi/2 radians?
    12·1 answer
  • Can someone please help
    12·2 answers
  • Complete this equation Sin(x+y)/sin(x-y)=
    5·1 answer
  • PLEASE HELP FAST!!!!!
    12·1 answer
  • Find the unknown side of the right triangle below. Round to the nearest tenth
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!