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
Alex Ar [27]
3 years ago
5

Veronica has $2.80, which consists of only quarters and nickels. If the number of quarters is half the number of nickels, how ma

ny coins does she have in total?
Mathematics
1 answer:
Natasha_Volkova [10]3 years ago
7 0

x = 0.5y \\ 0.25x + 0.05y = 2.80
Substitute x into
0.25(0.5y) + 0.05y = 2.80 \\ 0.175y = 2.80 \\ y = 16
x = 0.5(16) \\ x = 8
Total coins = 8 + 16 = 24

Hope this helps. - M
You might be interested in
The diameter of a small gear is 16 cm. This is a 2.5 cm more than 1/4 of the diameter of a large gear. What is the diameter of t
eimsori [14]
The large gear has a diameter of 54 CM.
6 0
3 years ago
Read 2 more answers
Find the area each sector. Do Not round. Part 1. NO LINKS!!<br><br>​
sladkih [1.3K]

Answer:

\textsf{Area of a sector (angle in degrees)}=\dfrac{\theta}{360 \textdegree}\pi r^2

\textsf{Area of a sector (angle in radians)}=\dfrac12r^2\theta

17)  Given:

  • \theta = 240°
  • r = 16 ft

\textsf{Area of a sector}=\dfrac{240}{360}\pi \cdot 16^2=\dfrac{512}{3}\pi \textsf{ ft}^2

19)  Given:

  • \theta=\dfrac{3 \pi}{2}
  • r = 14 cm

\textsf{Area of a sector}=\dfrac12\cdot14^2 \cdot \dfrac{3\pi}{2}=147 \pi \textsf{ cm}^2

21)  Given:

  • \theta=\dfrac{ \pi}{2}
  • r = 10 mi

\textsf{Area of a sector}=\dfrac12\cdot10^2 \cdot \dfrac{\pi}{2}=25 \pi \textsf{ mi}^2

23)  Given:

  • \theta = 60°
  • r = 7 km

\textsf{Area of a sector}=\dfrac{60}{360}\pi \cdot 7^2=\dfrac{49}{6}\pi \textsf{ km}^2

3 0
2 years ago
Use the net to find the surface area of the regular pyramid. 
valina [46]
Area=(1/2)bh
given
b=10
h=9
aera=(1/2)9*10=45
3 triangles+base=
45*3+43.3=
135+43.3=
178.3 mm^2
6 0
3 years ago
What is 3(x+2)=15?????​
Nitella [24]

Answer:

3

Step-by-step explanation:

7 0
3 years ago
Please help with this question! Thank you :)
UkoKoshka [18]

Answer:

D. 116

Step-by-step explanation:

V=(\frac{1}{3})\pi r^{2}h

V = (1/3)π(4)²(6.9)

V = 36.8π

V ≈ 115.55

<em>Note: You will NEVER use slant height to calculate the area, only to calculate the normal height if unknown. In this problem, we did not use it at all so try not to get confused!</em>

<em />

<h2>BRAINLIEST please if this helped!</h2>

5 0
2 years ago
Other questions:
  • Please Help!!
    15·2 answers
  • Question 1 (1 point)
    13·1 answer
  • The total cost of four pens and seven mechanical pencils is $9.73. The cost of each mechanical pencil is 0.75 cents. Which repre
    7·1 answer
  • A certain magical substance that is used to make solid magical spheres costs $800 per cubic foot. The power of a magical sphere
    11·1 answer
  • Can some please help and how to do it with the work shown.
    7·1 answer
  • -3 |x-3|+3=6<br> Please hell!
    10·1 answer
  • Identify the terms. Then identify the coefficients of the variable terms of the expression. (Enter your answers as a comma-separ
    15·2 answers
  • If the black cloth absorbs heat energy, why was the ice cube at room temperature covered with the black cloth the slowest to mel
    6·1 answer
  • A wire is bent to form a square of side 22 cm. If the wire is re bent to form a circle, its radius is with steps
    14·2 answers
  • The radius of a cylinder is $5/6$ its height. find the total surface area of the cylinder if its volume is $150\pi.$
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!