Evaluate 5+7x when x=3

Please help i need this answear asap

julsineya [31]

Answer:

19/15

Step-by-step explanation:

1 2/3=5/3

So 5/3 - 2/5 ( + - is -)

Making the denominator equal we get

(25-6)/15=19/15

3 0

3 years ago

An office manager has received a report from a consultant that includes a section on equipment replacement. The report indicates

Umnica [9.8K]

Answer:

The answer is "36.14%"

Step-by-step explanation:

The complete question is given in the attached file please find it.

$\mu =41\\\\\sigma= 4\\\\P(42$

Using z-table to find the value.

$\to P(41$

This means that between 42 and 48 months, 36.14 % of scanners could be predicted will break down.

5 0

3 years ago

8x2 +43x +30=0solve for x

storchak [24]

Use the quadratic formula to find the values of x:

$x=\frac{-b\pm\sqrt[]{b^2-4ac}}{2a}$

Where a, b and c are the coefficients of the quadratic equation.

$\begin{gathered} x=\frac{-43\pm\sqrt[]{43^2-4\cdot8\cdot30}}{2\cdot8} \\ x=\frac{-43\pm\sqrt[]{1849-960}}{16} \\ x=\frac{-43\pm\sqrt[]{889}}{16} \end{gathered}$

The equation has two solutions for x.

$\begin{gathered} x1=\frac{-43+\sqrt[]{889}}{16} \\ x2=\frac{-43-\sqrt[]{889}}{16} \end{gathered}$

As decimal numbers:

$\begin{gathered} x1=-0.8239 \\ x2=-4.5510 \end{gathered}$

8 0

1 year ago

Aleks [24]

Answer: We can be 95% confident that the true proportion of all college students gain weight in their freshman year.

Step-by-step explanation:

A 95% confidence interval interprets that a person can be 95% confident that the true population parameter lies in it.

Given : A popular claim, nicknamed "freshman fifteen," states that many college students gain weight in their freshman year.

The 95% confidence interval as 55.9% < p < 78.4%.

Here : Population parameter = p , where p is the proportion of college students gain weight in their freshman year.

Interpretation of 95% confidence interval : We can be 95% confident that the true proportion of all college students gain weight in their freshman year.

3 0

3 years ago

Next Statistical Models: Mastery Test Subm 2 Select the correct answer. Which experimental result best matches the theoretical p

scZoUnD [109]

Answer:

Mia has a bag that contains a letter block for each of the 26 letters of the alphabet. She draws a letter block from the bag, writes down the letter, and puts the block back in the bag. She repeats this 26 times. The results show that she drew a vowel (A, E, I, O, or U) 6 times.

Step-by-step explanation:

4 0

3 years ago

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