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
sergey [27]
3 years ago
9

Mary and her brother John collect foreign coins. Mary has three times the number of coins that John has. Together they have 180

foreign coins. Find how many coins Mary has.
45 coins

126 coins

135 coins

17 coins
Mathematics
2 answers:
irina [24]3 years ago
7 0
Mary has 135 coins and John has 45 coins.
jarptica [38.1K]3 years ago
4 0
She has 135 coins. John has 45 coins
You might be interested in
The function shown models the depth d (in inches) of snow on the ground during the first 9 hours of a snowstorm, where t is the
kondaur [170]

<em>Complete Question:</em>

<em>The function shown models the depth d (in inches) of snow on the ground during the first 9 hours of a snowstorm, where t is the time (in hours) after the snowstorm begins. </em>

<em> The -intercept means that there were[  ]inch(es) of snow on the ground at the start of the storm and the slope means that[  ]inch(es) of snow falls every hour during the storm. </em>

<em>Function: d(t)= 1/2t+6</em>

Answer:

b = 6

m = \frac{1}{2}

Step-by-step explanation:

Given

d(t)= \frac{1}{2}t+6

Required

Determine the y intercept and the slope

y-intercept:

d(t)= \frac{1}{2}t+6

A function has a format of:

d(t) = mt + b

Where b represent the y intercept:

By comparison of d(t) = mt + b and d(t)= \frac{1}{2}t+6

b = 6

Slope:

A function has a format of:

d(t) = mt + b

Where m represent the slope

By comparison of d(t) = mt + b and d(t)= \frac{1}{2}t+6

m = \frac{1}{2}

4 0
3 years ago
-3x^8/7x^4*-6x/2x^2 please help
photoshop1234 [79]

Answer:

= 9x^15/7

Step-by-step explanation:

4 0
3 years ago
Can you help me with this it’s so confusing plz help me with both is this
mars1129 [50]

Answer:

First picture: -4,913

Second picture: 20.25

Step-by-step explanation:

-17^5/-17^2 = -17^3

-17 × -17 × -17 = -4913

4.5^5/4.5^3 = 4.5^2

4.5 × 4.5 = 20.25

Do you see how I had the same whole number on the top and bottom? (17 was on top and 17 was on bottom)

The exponents were those tiny numbers you saw.

Whenever you are dividing by the same whole number (-17/-17), you can subtract exponents.

When you multiply the same whole number, you can add the exponents.

Hope this helps! Best of luck :)

5 0
3 years ago
Một khối kim loại có thể tích 3,2cm3 và cân nặng 22,4g. Hỏi một khối kim loại cùng chất có thể tích là 4,5cm3 cân nặng bao nhiêu
Ymorist [56]

Answer:

Một cm3 của khối kim loại đó cân nặng số gam là:

22,4:3,2=7(g)

Một khối kim loại cùng chất có thể tích là 4,5cm3 cân nặng số gam là:

7x4,5=31,5(g)

Step-by-step explanation:

6 0
2 years ago
Find the work done by gas?
salantis [7]

The work done by the gas when the gas expands will be 567.65 ft-lb.

<h3>What is the work done for an isothermal process?</h3>

The Pressure is inversely proportional to the volume.

Let the initial pressure and initial volume be P₁ and V₁, and the final volume be V₂.

Then the work done by the gas will be

WD = P₁ V₁ ln (V₂ / V₁)

A quantity of the gas with an initial volume of 2 cubic feet and an initial pressure of 700 pounds per square foot.

The gas expands to a volume of 3 cubic feet.

Then the work done by the gas will be

WD = 700 x 2 x ln (3/2)

WD = 1400 x 0.405

WD = 567.65 ft-lb

The work done by the gas when the gas expands will be 567.65 ft-lb.

More about the work done for isothermal process link is given below.

brainly.com/question/4218306

#SPJ1

7 0
2 years ago
Other questions:
  • Evaluate −3x+5y when x=16 and y=14. Write your answer as a fraction in simplest form.
    15·1 answer
  • Please help me on 18 - 20
    7·1 answer
  • A grocery store sells Swiss cheese for $5.90 a pound. To the nearest cent what is the cost oer ounce if Swiss cheese? round you
    6·2 answers
  • 3434 is 60% of what number?
    6·2 answers
  • What is the name of the guy who invented the multiplication tables?
    7·1 answer
  • A pair of linear equations is shown below:
    9·2 answers
  • Alex is thinking of a number.
    5·1 answer
  • PLZ HELP ITS DUE AT 4PM
    11·1 answer
  • What is equivalent to 3/8<br><br> 1. 2/7 2. 8/3<br> 3. 9/24 4. 5/10
    12·1 answer
  • Who can help me with this ?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!