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1 year ago

9uv + 3s³t² + 5uv

Mathematics

1 answer:

Mila [183]1 year ago

7 0

The expression after combining the like terms is 14uv+ 3s³t²

Expression:

Mathematical expression consist of at least two numbers or variables, at least one arithmetic operation, and a statement. It's possible to multiply, divide, add, or subtract with this mathematical operation.

Variable:

A variable in algebra is an alphabet that is used to symbolise the unknowable integer. It stands in for the value. An amount that can fluctuate depending on the mathematical issue is referred to as a variable.

⇒9uv + 3s³t² + 5uv

⇒ 14uv+ 3s³t² { addition of like terms}

Therefore,The expression after combining the like terms is 14uv+ 3s³t²

Learn more about expression here:

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In a survey of 1005 adults, a polling agency asked, "When you retire, do you think you will have enough money to live comfort

Sphinxa [80]

Answer: (0.504, 0.556)

Step-by-step explanation:

Given : Sample size : n= 1005

Number of adults stated that they were worried about having enough money to live comfortably in retirement = 531

Then the proportion of adults stated that they were worried about having enough money to live comfortably in retirement : $p=\dfrac{531}{1005}\approx0.53$

Significance level : $\alpha: 1-0.90=0.1$

Critical value : $z_{\alpha/2}=1.645$

The confidence interval for population proportion is given by :-

$p\pm\ z_{\alpha/2}\sqrt{\dfrac{p(1-p)}{n}}\\\\=0.53\pm(1.645)\sqrt{\dfrac{0.53(1-0.53)}{1005}}\\\\\approx0.53\pm0.026\\\\=(0.504,\ 0.556)$

Hence, the 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement = (0.504, 0.556)

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3 years ago

Can you help me ? :)

Stels [109]

Hi! Answer choices A and C represent the same level of precision!

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4 years ago

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Hello!

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4 years ago