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Fofino [41]
3 years ago
6

Please help!! I'll mark BRAINLIEST ​

Mathematics
2 answers:
tigry1 [53]3 years ago
7 0

Answer:

<h2>2(n+5)</h2>

Step-by-step explanation:

For finding we go from

Back to front that is,

<em>First</em><em>,</em>

Sum of a number and 5 that is = n + 5

<em>Then</em><em>,</em>

Twice of their sum that is = 2(n+5)

<em><u>Hence</u></em><em><u>,</u></em>

<em><u>Option</u></em><em><u> </u></em><em><u>C</u></em><em><u> </u></em><em><u>that</u></em><em><u> </u></em><em><u>is</u></em><em><u> </u></em><em><u>2</u></em><em><u>(</u></em><em><u>n</u></em><em><u>+</u></em><em><u>5</u></em><em><u>)</u></em><em><u> </u></em><em><u>(</u></em><em><u>Ans</u></em><em><u>)</u></em>

mixas84 [53]3 years ago
3 0

Answer: C: 2(n+5)

Step-by-step explanation:

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HELPPPP URGNT!!!!!!!
Vesna [10]
The answer is x:8

Solution

Kite formula : 1/2(d1 x d2)

D1=15
D2=x

60=1/2 x15 x x
X=60x2/15
X= 4 x2
X=8

Do you have any doubt?
7 0
3 years ago
What is 4(5n-7)=10n+2?variables on both sides
forsale [732]

Example:

About "Solving equations with variables on both sides"

Solving equations with variables on both sides :

To solve equations with variables on both sides, we have to bring the variables to the left side of equal sign and the numbers which or not having the variables, that is constants to the right side of equal sign.

Solving Equations with Variables on Both Sides - Steps

Step 1 :

Use the Distributive Property to remove the grouping symbols.

Step 2 :

Simplify the expressions on each side of the equals sign.

Step 3 :

Use the Addition and/or Subtraction Properties of Equality to get the variables on one side of the equals sign and the numbers without variables on the other side of the equals sign.

Step 4 :

Simplify the expressions on each side of the equals sign.

Step 5 :

Use the Multiplication or Division Property of Equality to solve.

If the solution results in a false statement, there is no solution of the equation.

If the solution results in an identity, the solution is all numbers.

Solving Equations with Variables on Both Sides -Examples

Example 1 :

Solve the following equation. Then check the solution.

5t - 9  =  -3t + 7

Solution :

5t - 9  =  -3t + 7

In order to get rid of -3t, we have to add 3t on both sides.

5t + 3t - 9  =  -3t + 3t + 7

8t - 9  =  7

In order to get rid of -9, add 9 on both sides

8t - 9 + 9  =  7 + 9

8t  =  16

Divide by 8 on both sides

8t/8  =  16/8

t  =  2

Hope this helps you understand better!

(It is not the answer but it is an example so hope this helps and please give me Brainliest)

3 0
4 years ago
Please help me! the correct answer will get brainliest
Ksivusya [100]
The answer is a it’s pretty easy
5 0
4 years ago
Factor 147a^2b-675b^3
Tju [1.3M]

Answer:Factor the polynomial

3(a−4b)2

8 0
3 years ago
A researcher wants to estimate the mean number of hours per day that elementary aged school children spend watching TV in order
Mashutka [201]

Answer:

a)  The confidence interval (1.93, 4.25) means that there is 95% confidence that the population mean for the number of hours per day spent watching TV is within 1.93 and 4.25.

b) H0: μ=2.5. The null hypothesis failed to be rejected.

H0: μ=1.2. The null hypothesis is rejected.

Step-by-step explanation:

a)  The confidence interval (1.93, 4.25) means that there is 95% confidence that the population mean for the number of hours per day spent watching TV is within 1.93 and 4.25.

b) If a two-sided hypthesis test is performed at a significance level of 0.05 with a null hypothesis H0: μ=2.5, the result would be that the null hypothesis failed to be rejected.

This is because we have the information of the 95% confidence level, that has the same level of significance and is also two-sided, includes the value 2.5. The confidence interval is, in this case, equivalent to the acceptance region for the hypothesis test, so the null hypothesis failed to be rejected.

If the null hypothesis mean would have fallen outside of the limits of the confidecence interval, the null hypothesis would have been rejected.

This is the case of H0: μ=1.2, which lies outside the confidence interval (in the rejection region). Then, the null hypothesis is rejected.

3 0
3 years ago
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