All categories

2 years ago

2x+x+x+8=76 plz help

Mathematics

2 answers:

Paha777 [63]2 years ago

7 0

Answer:

x=17

Step-by-step explanation:

andrey2020 [161]2 years ago

6 0

17. Reasoning: use reverse pemdas, so do addition first. To get rid of the +8, subtract 8 on both sides. This gets you 2x+x+x=68. Then combine like terms to get 4x=68. The to get rid of the 4, divide both sides by 4. This gets you x=17

You might be interested in

The table shows ordered pairs of the function . What is the value of y when ?

12345 [234]

Answer:

Hello in order to complete this question we need the table. If you give the table I am sure you will get more helpful and accurate information

Step-by-step explanation:

4 0

3 years ago

The surface area of a cone with radius r units and slant height s units is shown below:

Effectus [21]

Lateral Area = (π • r • slant height)
If radius = 2 and
slant height = 3 then


Lateral Area = (π * 2 * 3)

The lateral area = 18.8495559215

3 0

3 years ago

Two less than 2 times a number is the same as the number plus 64. What is the number?

sineoko [7]

What is 3 times the number?

3*66 = 198

4 0

3 years ago

Read 2 more answers

The article "Occurrence and Distribution of Ammonium in Iowa Groundwater" (K. Schilling, Water Environment Research, 2002:177–18

Papessa [141]

Answer: 95% confidence interval for the difference between the proportions would be (1.31, 1.39).

Step-by-step explanation:

Since we have given that

Number of alluvial wells = 349

Number of quaternary wells = 143

Number of alluvial wells that had concentrations above 0.1 = 182

Number of quaternary wells that had concentrations above 0.1 = 112

Average of alluvial wells = 0.27

Standard deviation = 0.4

Average of quaternary wells = 1.62

Standard deviation =1.70

So, 95% confidence interval gives

alpha = 5% level of significance.

$\dfrac{\alpha}{2}=2.5\%\\\\z_{\frac{\alpha}{2}}=1.96$

So, 95% confidence interval becomes,

$(1.62-0.27)\pm 1.96\sqrt{\dfrac{0.4^2}{349}+\dfrac{1.7^2}{143}}\\\\=1.35\pm 1.96\times 0.020\\\\=(1.35-0.040,1.35+0.040)\\\\=(1.31,1.39)$

Hence, 95% confidence interval for the difference between the proportions would be (1.31, 1.39).

6 0

3 years ago

Estimates the sum of 1/2-1/3

VladimirAG [237]

decimal: 0.166666667

fraction: 1/6

this is if you were asking the difference which is subtraction, you asked for the sum and the difference

8 0

4 years ago