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
Eddi Din [679]
3 years ago
13

Sonia has 120 blocks. She decides to stack up all the blocks so that each row

Mathematics
1 answer:
Darina [25.2K]3 years ago
4 0

Answer:

15

Step-by-step explanation:

You might be interested in
In the right triangle shown m angle y=30° and xy=6 how long is yz?
NemiM [27]

Answer:

hypotenuse=0.869...

Step-by-step explanation:

soh cah toa

xy is the adjacent side

we are looking for the hypotenuse, which is yz

cos30=6/hypotenuse

0.866=6/hypotenuse

hypotenuse=0.869...

7 0
3 years ago
Read 2 more answers
Solve the system of linear equations by graphing. Check your solution.
Phantasy [73]
Without the graph the answer is (2,-1)
8 0
3 years ago
Giving brainliest 10 points if you answer correctly !!!!
inn [45]

Answer:

(2,4) I hope this helps :))

3 0
2 years ago
Automobile racing, high-performance driving schools, and driver education programs run by automobile clubs continue to grow in p
yuradex [85]

Answer:

Step-by-step explanation:

Hello!

Given the variables

X₁: Weight of a safety helmet for racers

X₂: Price of a safety helmet for racers

Note, there is n= 17 observed values for each variable so for all calculations I'll use this number and disregard the 18 mentioned in the text.

a) Scatterplot in attachment.

b) If you look at the diagram it seems that there is a negative linear regression between the price and the weight of the helmets, meaning, the higher the helmet weights, the less it costs.

c) The estimated regression equation is ^Yi= a + bXi

n= 17; ∑Y= 6466; ∑Y²= 3063392; ∑X= 1008; ∑X²= 60294; ∑XY= 367536

Y[bar]= 380.35; X[bar]= 59.29

b= \frac{sumXY-\frac{(sumX)(sumY)}{n} }{sumX^2-\frac{(sumX)^2}{n} } = \frac{367536-\frac{1008*6466}{17} }{60294-\frac{(1008)^2}{17} } = -30.18

a= Y[bar]- bX[bar]= 380.35-(-30.18)*59.29= 2169.77

The estimated regression equation for the price of the helmets as a function of their weight is:

^Yi= 2169.77 -30.18Xi

I hope it helps!

8 0
3 years ago
The side of the base of a square prism is decreasing at a rate of 7 kilometers per minute and the height of the prism is increas
Ber [7]

Answer:

dV = - 5.73*10⁹ m³/s

Step-by-step explanation:

Question: What is the rate of change of the volume of the prism at that instant (in cubic meters per second) ?

A function can be dependent on one or more variables. The change in the function due to a change in one o its variables is given by the functions derivative with respect to that variable. For functions that are composed of products of its variables, we may use the product rule to determine its derivative.

The volume of a square prism with base a and height h is given by

V = a²h

When the base and height are changing, we have

dV = 2ah(da/dt) +  a²(dh/dt)

Given

a = 4 Km

h = 9 Km

da/dt = - 7 Km/min

dh/dt = 10 Km/min

we have

dV = 2(4 Km)(9 Km)(- 7 Km/min) +  (4 Km)²(10 Km/min)

⇒   dV = - 504 Km³/min + 160 Km³/min = - 344 Km³/min

⇒   dV = - 5.73*10⁹ m³/s

8 0
3 years ago
Other questions:
  • On the way home from their trip, the Boden family also decided to use the odometer to keep track of the family’s progress. After
    11·1 answer
  • If a garden has an area of 100 square feet how much fencing is needed to enclose the garden
    11·2 answers
  • Tell whether the sequence , , , . . . is arithmetic, geometric, or neither. Find the next three terms of the sequence. A. neithe
    6·1 answer
  • What is the perimeter of the room?<br>5 yd<br>. What is the area of the room?<br>4 yd​
    9·1 answer
  • I need a subtracting word problem please
    6·2 answers
  • How many times larger is the volume of a cylinder if the height is doubled?
    9·1 answer
  • Write an equivalent expression.<br> 15 3a +<br> 3
    8·1 answer
  • Does anyone know this answer??<br> Choices- 333.50, 63.50, 153.50, 166.75
    15·2 answers
  • Rewrite the equation by completing the square.
    7·1 answer
  • Pls help I can't even under stand it
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!