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
grin007 [14]
2 years ago
5

Im solving variables -4y + 7 = -10y+37

Mathematics
2 answers:
Ulleksa [173]2 years ago
8 0

Answer:

5

Step-by-step explanation:

move the terms

collect like terms

calculate

divide both side

qwelly [4]2 years ago
4 0

Answer: y = 5

Step-by-step explanation:

(step 1) -4y + 7+ 10y = -10y + 37 + 10y

6y + 7 = 37

(step 2) 6y + 7 - 7= 37 - 7

6y = 30

(step 3) Divided both sides by 6.

6y/6 = 30/6

so the answer is y = 5

You might be interested in
Please please answer this correctly. Please take a pic of the same screenshot of put the right plots correctly
sergeinik [125]

Answer:

Picture

Step-by-step explanation:

I graphed them

4 0
3 years ago
How can you tell if a equation is extraneous
geniusboy [140]
Do you mean an extraneous solution? I will tell you what I think. To tell if a solution is extraneous you need to go back to the original problem and check if there actually is a solution or if the solution is actually right. If not then it is extraneous.
6 0
3 years ago
A study of the number of business lunches that executives in the insurance and banking industries claim as deductible expenses p
gizmo_the_mogwai [7]

Answer:

t=\frac{9.1-8}{\sqrt{\frac{(1.9)^2}{40}+\frac{(2.1)^2}{50}}}}=2.604  

p_v =2*P(t_{(88)}>2.604)=0.0108

So the p value is a very low value and using any significance level for given \alpha=0.05 always p_v so we can conclude that we have enough evidence to reject the null hypothesis, and there is enough evidence to conclude that the two means are significantly different at 5%

Step-by-step explanation:

Data given and notation

\bar X_{1}=9.1 represent the mean for the sample 1

\bar X_{2}=8 represent the mean for the sample 2

s_{1}=1.9 represent the sample standard deviation for the sample 1

s_{2}=2.1 represent the sample standard deviation for the sample 2

n_{1}=40 sample size for the group 1

n_{2}=50 sample size for the group 2

t would represent the statistic (variable of interest)

Concepts and formulas to use

We need to conduct a hypothesis in order to check if the mean are different , the system of hypothesis would be:

Null hypothesis:\mu_{1} = \mu_{2}

Alternative hypothesis:\mu_{1} \neq \mu_{2}

If we analyze the size for the samples both are higher than 30 and the population deviations are not given, so for this case is better apply a t test to compare means, and the statistic is given by:

t=\frac{\bar X_{1}-\bar X_{2}}{\sqrt{\frac{s^2_{1}}{n_{1}}+\frac{s^2_{2}}{n_{2}}}} (1)

t-test: Is used to compare group means. Is one of the most common tests and is used to determine whether the means of two groups are equal to each other.

Calculate the statistic

We can replace in formula (1) the results obtained like this:

t=\frac{9.1-8}{\sqrt{\frac{(1.9)^2}{40}+\frac{(2.1)^2}{50}}}}=2.604  

Statistical decision

The first step is calculate the degrees of freedom, on this case:

df=n_{1}+n_{2}-2=40+50-2=88

Since is a bilateral test the p value would be:

p_v =2*P(t_{(88)}>2.604)=0.0108

So the p value is a very low value and using any significance level for given \alpha=0.05 always p_v so we can conclude that we have enough evidence to reject the null hypothesis, and there is enough evidence to conclude that the two means are significantly different at 5%

3 0
2 years ago
Which expressions will help you find the surface area of this net? Select all that apply.
Ierofanga [76]
<h3>9 × 6</h3>

Because the surface area is rectangle and the area of rectangle is length × width

length = 9

width = 6.

so 9×6

8 0
3 years ago
Experimental and Theoretical Probability are always the same. Question 4 options: True False
tiny-mole [99]
Correct answer is false. i hope this helps if it does i hope i earn brainliest answer and have a fantastic day:)
3 0
3 years ago
Other questions:
  • Four interior angles of a pentagon measure 156 degrees 72 degrees 98 degrees and 87 degrees. What is the measure of the final in
    5·1 answer
  • the number of painted turtles in a pond is one less than half of the number of bullfrogs. Let f represent the number of bullfrog
    13·1 answer
  • When constructing an inscribed square, how many lines will be drawn in the circle? (6 points) A. 2 B. 3 C .5 D. 7
    14·1 answer
  • Which of the following is a true statement?
    11·1 answer
  • Please solve this -10+1/3y&gt;2/3
    12·1 answer
  • Find the sum of the squares of the roots of 3x^2 + 4x + 12 = 0.
    13·2 answers
  • You want to know the opinions of American school teachers about establishing a national test for high school graduation. You obt
    9·1 answer
  • 2x+7y =3<br> x= -4y <br><br> x=<br> y=
    5·2 answers
  • The function f is defined by f(x)=x^2+3x-10
    12·1 answer
  • Help me pleaseee!!!!!
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!