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Lisa [10]
3 years ago
6

I need help plz help me

Mathematics
1 answer:
Marta_Voda [28]3 years ago
7 0

Answer:

3000g

hope this helps

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5x = –25 + 5y <br><br> 10y = 42 + 2x
Novay_Z [31]
To solve this equation there are many ways you can do to solve. One way is to simply substitute one variable for another.

5x = 5y - 25
X = y - 5

10y = 42 + 2x
10y = 42 + 2(y - 5)
10 y = 42 + 2y - 10
8y = 32
Y = 4.

X = y - 5
X = 4 - 5
X = -1.

P(X,y) = P(-1,4). This would be the solution or the point where they would intersect.
3 0
3 years ago
L'shanda rode her bike 2.5 miles. Shaman rode her bike 3 miles. How many more feet did shanay rode her bike than l'shanda
9966 [12]
3 - 2.5 = 0.5

shanay rode 1/2 a mile more

hope this helps :)
6 0
3 years ago
Read 2 more answers
Barry needs to find the area of a rectangular room with a length that is 2 feet longer than the width. Write an expression for t
babunello [35]

Answer:

try asking a master, ok?

Step-by-step explanation:

5 0
3 years ago
Independent random samples of vehicles traveling past a given point on an interstate highway have been observed on monday versus
quester [9]
Hi! 

To compare this two sets of data, you need to use a t-student test:

You have the following data:

-Monday n1=16; <span>x̄1=59,4 mph; s1=3,7 mph

-Wednesday n2=20;  </span>x̄2=56,3 mph; s2=4,4 mph

You need to calculate the statistical t, and compare it with the value from tables. If the value you obtained is bigger than the tabulated one, there is a statistically significant difference between the two samples.

t= \frac{X1-X2}{ \sqrt{ \frac{(n1-1)* s1^{2}+(n2-1)* s2^{2} }{n1+n2-2}} * \sqrt{ \frac{1}{n1}+ \frac{1}{n2}} } =2,2510

To calculate the degrees of freedom you need to use the following equation:

df= \frac{ (\frac{ s1^{2}}{n1} + \frac{ s2^{2}}{n2})^{2}}{ \frac{(s1^{2}/n1)^{2}}{n1-1}+ \frac{(s2^{2}/n2)^{2}}{n2-1}}=33,89≈34

The tabulated value at 0,05 level (using two-tails, as the distribution is normal) is 2,03. https://www.danielsoper.com/statcalc/calculator.aspx?id=10

So, as the calculated value is higher than the critical tabulated one, we can conclude that the average speed for all vehicles was higher on Monday than on Wednesday.



5 0
3 years ago
X-5 over (3x+9)(x-4)
STatiana [176]

Answer:

Simplified equation: \frac{x-5}{3(x+3) (x-4)}

<em>Brainliest Pls</em>

6 0
3 years ago
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