3 years ago

What is the value of y?

Mathematics

1 answer:

murzikaleks [220]3 years ago

7 0

180 - 114

114/2 = 57

y = 57 (b)

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y=−2x+4 iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

GalinKa [24]

Answer:

2x+y=4

Step-by-step explanation:

7 0

2 years ago

Which of the following expressions is a polynomial?

Assoli18 [71]

Hello from MrBillDoesMath!

Answer:

The second choice

Discussion:

The first choice is not a polynomial because it contains sqrt(x)

The third choice is not a polynomial because it contains (1/x)

The fourth choice is not a polynomial because it contains x in the exponent (ie. 5^x)

Thank you,

MrB

4 0

2 years ago

I'm not sure of my answer I know that you have to multiply diagonally then add or subtract I'm not sure.

Dima020 [189]

-18(1) = -18,right?

4(3) = 12, right?

-18 - 12 = -30

From the looks of it, we had to "Subtract" the outcome of each problem that we went over

You're correct: -30 (option A.) would be your answer

7 0

2 years ago

A survey showed that out of 600 surgery patients at ABC Medical Center, 8% of them had eye surgery. Find the number of patients

N76 [4]

Answer:

Step-by-step explanation:

.08x600=48

8 0

2 years ago

Read 2 more answers

Ming works as a quality assurance analyst at a bottling factory. She wants to use a one-sample z interval to estimate what propo

Nastasia [14]

Answer:

Sample size is $n=423$

Step-by-step explanation:

Given that,

Margin of error $=4$ %

Confidence level $=90$ %

Suppose, sample proportion $=0.5$

i.e. $\hat{P}=0.5$

We know that,

Margin of error $=2^*\sqrt{\frac{\hat{p}(1-\hat{p})}{n} }$

∴ $1.64\sqrt{\frac{0.5(0.5)}{n} } \leq 4\%$

$\Rightarrow 1.64\sqrt{\frac{0.25}{n} } \leq 0.04$

$\Rightarrow \frac{0.5}{\sqrt{n} } \leq \frac{0.04}{1.64}$

$\Rightarrow \frac{0.5}{\sqrt{n} } \leq 0.0243$

$\Rightarrow \sqrt{n}\geq \frac{0.5}{0.0243}$

$\Rightarrow \sqrt{n}\geq 20.57$

squaring on both side,

∴ $n=423.1249$

Hence, the sample size is,

$n=423$

Hence, the correct option is $(b).$

7 0

2 years ago