simplify without calculator(-5)(7)+4*5​

Answer:

45

Step-by-step explanation:

530 use division 12 equals ,44.166 so round up

Answer: C. $1071.30

Step-by-step explanation:

I got this answer by subtracting $174 and $54.70 because those are the federal and state biweekly deductions from her income of $1300.

Answer:

C

Step-by-step explanation:

Just took the quiz and got this right.

Answer: X = 15  

Explanation:

Well, If 12 equals X minus 3 then we first must flip the signs.

which is adding. So we take 12 and add 3 which would get us 15.

Double check  :  15 (X) - 3 = 12

Answer:

1 error / about 8 minutes and 30 seconds

Step-by-step explanation:

1/8.5                    Divide the fraction by 7.

By dividing both numbers of the fraction, you are finding how many errors are in the number of minutes you make them.

Exact answer: 1/8.571428 repeated

Rounded answer: 1/8.56

Answer:

Step-by-step explanation:

Answer:

  2)  (-∞, 17]

Step-by-step explanation:

The leading coefficient of the function is negative, so the parabola opens downward. The vertex will be a maximum, the upper end of the range. The lower end of the range will be -∞.

The vertex of the function lies on the axis of symmetry. The maximum can be found by evaluating the function at x=-4.

  y = -(-4)² -8(-4) +1 = -16 +32 +1 = 17

The range of the function is (-∞, 17].

Answer:

there is no figures could you please um take picture so we can help

[tex][Hello,BrainlyUser!\; I'm\;Lenvy][/tex]

[tex]Your\;Answer\;Is\;Below[/tex]

Answer:

42 feet

Step-by-step explanation:

First let know what is

Yards to Feet

Note that;

1 Yard ⇒ 3 Feet

Thus, Formula: Multiply the length value by 3

Given:

Lena bought 14 yards of ribbon. How many feet of ribbon did she buy?

Therefore, 14 * 3 = 42

Hence, Answer is Lena brough 42 feet of ribbon.

~[CloudBreeze]~

Answer:

42 feet

Step-by-step explanation:

Important Info:

Lena bought 14 yards of ribbon. How many feet of ribbon did she buy?

Notice it say how many feet..

Therefore, Let's first know what yards to feet..

1 Yard → 3 feet

Since we know that We can Solve now:

To Find how many feet of ribbon she buy let's multiply;

14 x 3  = 42

or

14 + 14 + 14 = 42

Hence, Knowing that Lena brought 42 ribbon in feet.

[RevyBreeze]

[tex]g(a) = 2a + 4[/tex]

[tex]g(8) = 2(8) + 4 = 20[/tex]

_________________________________

[tex]h(a) = {a}^{2} + 1 [/tex]

[tex]h(g(8)) = h(20) = {20}^{2} + 1 = 401 \\ [/tex]

Done...♥️♥️♥️♥️♥️

The car gets 46 miles per gallon in the city.

Divide total miles driven in th city by miles per gallon to find total number of gallons of gas used:

10,000 miles / 46 miles per gallon = 217.3913 gallons of gas used.

Now multiply gallons used by price per gallon:

217.3913 x $1.75 = $380.43 per year

Answer:

1200 km

Step-by-step explanation:

Just multiply by 20

Answer:

[tex]\displaystyle \perp\:y = -\frac{4}{7}x + 6\frac{4}{7} \\ \parallel\:y = 1\frac{3}{4}x - 12[/tex]

Step-by-step explanation:

Perpendicular equations have OPPOCITE MULTIPLICATIVE INVERCE RATE OF CHANGES [SLOPES], so 1¾ becomes −⁴⁄₇, and we move forward:

[tex]\displaystyle 2 = -\frac{4}{7}[8] + b \hookrightarrow 2 = -4\frac{4}{7} + b; 6\frac{4}{7} = b \\ \\ \boxed{y = -\frac{4}{7}x + 6\frac{4}{7}}[/tex]

Parallel equations have SIMILAR RATE OF CHANGES [SLOPES], so 1¾ remains as is as we proceed:

[tex]\displaystyle 2 = 1\frac{3}{4}[8] + b \hookrightarrow 2 = 14 + b; -12 = b \\ \\ \boxed{y = 1\frac{3}{4}x - 12}[/tex]

I am joyous to assist you at any time.

Answer: upper bound = 89.36 and lower bound = 94.64

Step-by-step explanation:

Confidence interval for mean : [tex]\overline{x}\pm z^*\dfrac{\sigma}{\sqrt{n}}[/tex], where [tex]\overline{x}[/tex] = sample mean , n= sample size , z* = two-tailed critical value, [tex]\sigma[/tex]= population standard deviation

As per given , we have

[tex]\overline{x}[/tex] = 92

n =  55

[tex]\sigma[/tex]= 10

Critical value for 95% confidence interval = 1.96

Required confidence interval :  [tex]92\pm (1.96)\dfrac{10}{\sqrt{55}}[/tex]

[tex]92\pm (1.96)(1.3484)\approx92\pm2.64\\\\= (92-2.64,\ 92+2.64)\\\\=(89.36,\ 94.64)[/tex]

Hence, for 95% confidence interval for the mean IQ of primary school students:

upper bound = 89.36 and lower bound = 94.64

Answer:

Your correct answer is 32.

Step-by-step explanation:

175 percent (calculated percentage %) of what number equals 56?

Answer: 32

A number 98 is 175 percent of 56.

We have to given that,

To find a number which is 175% of 56.

Let us assume that,

A number which is 175% of 56 is, x

Hence, We can write as,

x = 175% of 56

x = 175/100 × 56

x = 1.75 × 56

x = 98

Therefore, The solution is, 98

Learn more about the percent visit:

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Step-by-step explanation:

Consider the problem

Let, E 1 and E 2

​  be the respective events of items produced by machine A and B.

And let x be the event that the produced item was found to be defective.

Therefore,

Probability of items produced by machine A,P (E 1)=60%= 53

Probability of items produced by machine B,P (E 2)=40%= 52

And,

Probability that machine A produced defective items, P( E 1 x)=2%= 1002

Probability that machine B produced defective items, P( E 2 x)=1%= 1001

So, the probability that randomly selected items was from machine A is given by P( x E 1)

Now, Apply Bayes' Theorem

P( x E 1)= P(E 1)P( E 1x )+P(E 2)P( E 2x)P(E 1)P( E 1x)= 52× 1001 + 5

3× 1002

53× 100

2= 2+5

6= 11

6

Hence, the required probability of machine A is  

11

6

​

The required answers are,

A.) The probability that the unit is defective is 0.046

B.) The probability that it was manufactured by machine M2​ is 0.4

Probability is the extent to which an event is likely to occur, measured by the ratio of the favorable cases to the whole number of cases.

Now given that,

Product produced by machine M1 = 60%

⇒ P(M1) = 60% = 0.6

Defective units = 5%

⇒ P(D1) = 5% = 0.05

Product produced by machine M2 = 40%

⇒ P(M2) = 40% = 0.4

Defective units = 4%

⇒ P(D2) = 4% = 0.04

Now, a unit is selected at random from the whole product

So, probability that it is defective is given as,

P(D) = P(D|M1) * P(D1) + P(D|M2) * P(D2)

⇒ P(M1|M2) = (0.6 X 0.05) + (0.4 X 0.04)

⇒ P(M1|M2) = 0.03 + 0.016

⇒ P(M1|M2) = 0.046

And probability that it was produced on the first machine(M2).

P(M2|D1) = P(M2∩D1) / P(D1)

⇒ P(M2|D) = (0.4 X 0.04)/0.04

⇒ P(M2|D) = 0.016 / 0.04

⇒ P(M2|D) = 0.4

Thus, the required answers are,

A.) The probability that the unit is defective is 0.046

B.) The probability that it was manufactured by machine M2​ is 0.4

To learn more about probability :

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Answer:

64

Step-by-step explanation:

72-18+4+6=64

Answer:

64

Step-by-step explanation:

Answer: 14 dollar discount

Step-by-step explanation:

Answer:

y = 25x +100

He will collect 275 pounds in 7 weeks

It will take him 12 weeks.

Hope this helps!

Using the normal distribution, it is found that 62.46% of students would be expected to score between 350 and 550.

In a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

In this problem, the mean and the standard deviation are respectively, given by: [tex]\mu = 425, \sigma = 110[/tex]

The proportion of students that would be expected to score between 350 and 550 is the p-value of Z when X = 550 subtracted by the p-value of Z when X = 350, hence:

X = 550:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{550 - 425}{110}[/tex]

[tex]Z = 1.14[/tex]

[tex]Z = 1.14[/tex] has a p-value of 0.8729.

X = 350:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{350 - 425}{110}[/tex]

[tex]Z = -0.68[/tex]

[tex]Z = -0.68[/tex] has a p-value of 0.2483.

0.8729 - 0.2483 = 0.6246

62.46% of students would be expected to score between 350 and 550.

More can be learned about the normal distribution at https://brainly.com/question/24663213

Answer:

The answer is D

Step-by-step explanation:

Given : Number 35,187.

To find : In which number does the 5 represent a value 10 times the value represented by the 5 in number ?

Solution :

According to place value system,

Ten Thousand     Thousand      Hundred     Tens      Ones

      3                         5                    1                8             7

The 5 value is at thousand.

A value 10 times the value represented by the 5 in 35,187 is given by any number placed in ten thousand place.

Therefore, The answer is D

Answer:

"B"

Step-by-step explanation:

The "5" Starts at the place of the "1" and

moves up by one because the "0" in the 10 to make

"B"'s Answer.

Let me know if you elaboration!

Using the normal distribution, it is found that there is a 0.6406 = 64.06% probability that the company will have to refund money to a customer.

In a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

Researching the problem on the internet, it is found that the mean and the standard deviation are, respectively, given by [tex]\mu = 13[/tex] and [tex]\sigma = 2.75[/tex].

The probability it lasts less than 14 years is the p-value of Z when X = 14, hence:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{14 - 13}{2.75}[/tex]

[tex]Z = 0.36[/tex]

[tex]Z = 0.36[/tex] has a p-value of 0.6406.

0.6406 = 64.06% probability that the company will have to refund money to a customer.

More can be learned about the normal distribution at https://brainly.com/question/24663213

Answer:

6/6 x 3/5, 1/4 x 3/5, 1 2/5 x 3/5, 2 x 3/5

Hope this helps

Step-by-step explanation:

Answer:

Slope = -1/2.

Step-by-step explanation:

2 points on the line are (10, 0) which is where the line passes through the x-axis and (0, 5 ) where it passes through the y-axis.

The slope = (difference in y coordinates) / ( corresponding difference in  x coordinates)

= (5 - 0) / (0 - 10)

= -5/10

= -1/2.

Answer:

65 degrees

Step-by-step explanation:

Since the two straight lines are parallel, this means that Angle 1 and the 65 degrees angle are alternate interior angles; meaning that they're congruent.

So:

Angle 1 = 65 degrees

Hope this helps!

Please let me know if I'm incorrect :)

Answer:

The answer is 65  (degree symbol here)

Step-by-step explanation:

two interior angles on the inside of this shape will always be the same

Answer:

The first one is : B. 12

The second one is: B. 4

Step-by-step explanation:

1 Explained:

12 * 3 = 36

36 - 24 = 12

Therefore if he had taken 3 times as many he would have had 36. And 36 is 24 more than 12.

2 Explained:

blue + green + yellow = 240

120 + 40= 160

240 - 160= 80

Yellow= 80

120/20= 6

40/20= 2

80/20= 4

6 blue

2 green

4 yellow

12 in total.

Polynomial functions' standard form is f(x)=ax^n+bx^n-1...+k

However, polynomials can also be written in intercept form

f(x)=(x-x1)(x-x2)(x-x3)...(x-xn) for roots/zeros x1,x2,x3,...,xn

With the three numbers that you have -2, 3, -4 you can write function

f(x)=(x-(-2))(x-3)(x-(-4))

Then you can simplify and distribute

f(x)=(x+2)(x-3)(x+4)

f(x)=(x^2-x-6)(x+4)

f(x)=x^3+3x^2-10x-24

Which would be the answer

Answer:

$20.93

Step-by-step explanation:

2.99 x 7= 20.93

Answer:

Two sample test of paired means with unknown variance (standard deviation)

Step-by-step explanation:

Answer:

it is 48

Step-by-step explanation:

the reason it is 48 is because the length is 6 feet and it is 8 wide so 8x6=48

and it would be 480.00$