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
GarryVolchara [31]
3 years ago
11

150 pounds shared into the ratio of 4:1

Mathematics
1 answer:
V125BC [204]3 years ago
4 0

\begin{cases}x+y=150\smallskip\\\dfrac{x}{y}=\dfrac{4}{1}\end{cases}\Leftrightarrow\begin{cases}x+y=150\smallskip\\x=4y\end{cases}\Leftrightarrow\begin{cases}5y=150\smallskip\\x=4y\end{cases}\Leftrightarrow\begin{cases}y=30\smallskip\\x=120\end{cases}

150=120+30

You might be interested in
An ant crawled 12 inches in 10 seconds. A second ant crawled 24 inches in 10 seconds. Calculate the speed of each ant, then comp
Charra [1.4K]

Answer:

Step-by-step explanation:divide 12/10 and 24/10. The larger answer will tell you the slower ant... I’m pretty sure

6 0
2 years ago
A company is developing a new high-performance wax for cross country ski racing. In order to justify the price marketing wants,
andrew11 [14]

Answer:

A)Yes they should market the wax, because it melts before 55 seconds

C) Null hypothesis: mean <55 vs. Alternative hypothesis :mean =55

D) the value is 51.33 seconds

Step-by-step explanation:

The selected samples for the champion are : 57.9, 62.9, 50.6, 50.5,48.2,47.2,50.2 and 43.1

The mean is ;

Sum =57.9 + 62.9 + 50.6 + 50.5+48.2+47.2+50.2+ 43.1 =410.6

Mean= 410.6/8 =51.33= mean

Assuming Significant =0.05 thus applying this level will give you 51.28-51.38

if specifically, the mean time to finish their standard test course should be less than 55 seconds for a former Olympic champion, then the null hypothesis is correct

Then;

Null hypothesis: mean <55

Alternative hypothesis :mean =55

7 0
2 years ago
Write an equation in standard form of a line that goes through these two points (-1, 1) and (5, -3). Help, please!
MatroZZZ [7]

Step-by-step explanation:

assuming two points with coordinates :

(Xa,Ya) and (Xb,Yb)

use formula : (Xb-Xa)/ (Yb-Ya)

= 5+1/-3-1 = 6/-4

the standard form is 6/-4 × x

8 0
3 years ago
Solve the quadratic equation: 3x2 − 2x − 8 = 0
astra-53 [7]
Solutions 

Factor <span>3x</span>²<span><span>−2x−8</span><span>

</span></span>1. Multiply 3 by -8, which is -24.

2. Ask: Which two numbers add up to -2 and multiply to -24?

3. Answer: 4 and -6

4. Rewrite <span>−2x </span>as the sum of <span>4x </span>and <span>−6x</span>: 

3x^2+4x-6x-8=0<span>

</span><span>Factor out common terms in the first two terms, then in the last two terms 
</span>
x(3x+4)-2(3x+4)=0&#10;&#10; &#10; 

 Factor out the common term <span>3x+4 

</span>(3x+4)(x-2)=0 

Solve for <span>x

</span>1. Ask: When will <span>(3x+4)(x−2) </span>equal zero?

2. Answer: When <span>3x+4=0 </span>or <span>x−2=0.</span>

3. Solve each of the 2 equations above: 

x = −<span>4 / 3</span>,<span>2</span>

8 0
3 years ago
Read 2 more answers
Order least to greatest 3/40, 4/25, 1/10
Luda [366]
4. 4. 1.
25 20 10

This is the answer
7 0
3 years ago
Read 2 more answers
Other questions:
  • 2y + 12 = -3x<br><br> solve pls i have more I WILL GIVE EXTRA POINTS!!!!!!!!!!<br> 20+
    7·1 answer
  • He is 187cm tall how many metres is this
    14·1 answer
  • |5x|+5=45<br><br> can you explain this absloute value equation <br> i have a midterm
    6·2 answers
  • Lexi bulletin board is 40 centimeters wide,and her photos are 12 centimeters wide. What combinations of ribbons and photos will
    12·1 answer
  • 2÷3 is 2/3. What is 1/3 of 2?
    12·2 answers
  • Surface area... help me
    5·1 answer
  • A beach volleyball court is 9 meters wide and 17 meters long. The rope used for the boundary line costs $4.00 per meter. How muc
    13·1 answer
  • Help help help help last one
    15·2 answers
  • Will give brainliest or whatever it’s called
    10·2 answers
  • Determine the area of the following parallelogram. Show your work.<br> 10 yd<br> 9 yd<br> 7 yd
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!