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3 years ago

Will mark brainliest

Mathematics

2 answers:

Lapatulllka [165]3 years ago

5 0

Answer:

12. 5x

13. 5/x-z

Step-by-step explanation:

12. product means multiplication so multiply 5 by x= 5x

13. quotient means division and difference means subtraction. so you divide 5 by x-z= 5/x-z

Serggg [28]3 years ago

4 0

Answers:

$\huge \boxed{{12. \ 5x}}$

$\huge \boxed{{13. \ \frac{5}{x-z} }}$

$\rule[225]{225}{2}$

Step-by-step explanation:

The product is the result after multiplying values together.

The product of 5 and x is:

$5 * x$

$5x$

The quotient is the result after dividing values together.

The difference is the result after subtracting values together.

The quotient of 5 and the difference of x and z is:

$\displaystyle \frac{5}{x-z}$

$\rule[225]{225}{2}$

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3 years ago

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vesna_86 [32]

Answer:

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7 0

3 years ago

Evaluate the expression (-4)^2+12x2

Elza [17]

Answer:

Step-by-step explanation:

step 1: (-4)^2=16

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step3: 16+24+40

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7 0

3 years ago

The function below is written in vertex form or intercept form. Rewrite them in standard form and show your work.

lora16 [44]

Answer:

The standard form as $y=5x^2+30x+41$

Step-by-step explanation:

Given: A function which is written in vertex form or intercept form.

We have to re-write it in standard form that in terms of

Given $y = 5(x+3)^2-4$

Squaring using $(a+b)^2=a^2+b^2+2ab$ , we get,

$y=5(x^2+9+6x)-4$

Multiply 5 inside , we get,

$y=5x^2+45+30x-4$

Solving further , we get,

$y=5x^2+30x+41$

Thus , we have obtained the standard form as $y=5x^2+30x+41$

8 0

3 years ago

Read 2 more answers

The claim is that the proportion of adults who smoked a cigarette in the past week is less than 0.30, and the sample statistics

IrinaK [193]

Answer: 0.84

Step-by-step explanation:

let p be the population proportion of adults who smoked a cigarette in the past week.

As per given , we have

$H_a: p$

Sample size : n= 1491

The sample proportion of adults smoked a cigarette= $\hat{p}=\dfrac{x}{n}=\dfrac{462}{1491}=0.30985915493\approx0.31$

The test statistic for proportion is given by :-

$z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}$

Substitute all the values , we get

$z=\dfrac{0.31-0.30}{\sqrt{\dfrac{0.30(1-0.30)}{1491}}}\\\\=\dfrac{0.01}{\sqrt{0.000141}}\\\\=\dfrac{0.01}{0.011874342087}=0.84261497731\approx0.84$

Hence, the value of the test statistic = 0.84

6 0

3 years ago