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alexgriva [62]
3 years ago
8

Please answer this fast I have been a month try to answer it thank you. ​

Mathematics
1 answer:
Korvikt [17]3 years ago
8 0

Answer:

(a) 3x -5 =25

(b) x^2 + y = 18

(c) 6x/5 =4+x

(d) 1•5x + x =2(x-4)

Step-by-step explanation:

You might be interested in
-4x-2y=-12 <br>4x+8y=-24​
sweet [91]

Answer:

x = 6

y = -6

Step-by-step explanation:

By adding both equations :-

=》-4x -2y + 4x + 8y = -12 + (-24)

=》-4x + 4x + 8y - 2y = -12 - 24

=》6y = -36

=》y = -36 ÷ 6

=》y = -6

putting the value of y in equation 2

=》4x + 8y = -24

=》4x + (8 × -6) = -24

=》4x - 48= -24

=》4x = 48 - 24

=》x = 24 / 4

=》x = 6

6 0
3 years ago
Read 2 more answers
Need help with this math lesson
ki77a [65]

Rational numbers are numbers that can be turned into fractions. So A, C, D, E, F, G, H, and I are rational numbers

3 0
4 years ago
In order to determine an interval for the mean of a population with unknown standard deviation, a sample of 24 items is selected
nikitadnepr [17]

If the sample size of population is 24 then the number of degrees of freedom for reading the t  value is 23 which is option c.

Given sample size of 24,mean 23.

We have to determine the number of degrees of freedom which will be used to find the critical values of t.

Degree of freedom is the number of values in the final calculation of a statistic that are free to vary means that can change their values in the formula of calculating t.

t=(X-μ)/s/\sqrt{n}

where X is sample mean ,

μ is hypothsised population mean

s is sample standard deviation

n is sample size.

Degree of freedom=n-1

In this question n is 24 so the degree of freedom =24-1=23.

Hence the number of degrees of freedom for reading the t value is 23.

Learn more about degree of freedom at brainly.com/question/17305237

#SPJ4

5 0
2 years ago
What is i + 6i? You have to simplify
marissa [1.9K]

i=1i\\\\i+6i=1i+6i=(1+6)i=\boxed{7i}

3 0
4 years ago
Combine like terms and write an equivalent expression with fewer terms: 4 - 2x + 5x
borishaifa [10]

Answer:

4 - 3x

Step-by-step explanation:

negative 2x plus 5x equals 3x

8 0
3 years ago
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