I’m stuck on all of these
:( any help would be very appreciated

Answer:

B

Step-by-step explanation:

Answer:

6 degrees Celsius

Step-by-step explanation:

It started at 2 degrees Celsius below zero. The next day, it dropped to 12 degrees Celsius below zero. The next day, it rose to 7 degrees below zero. The next day, it increased to 6 degrees ABOVE zero. -7+13=6

Answer:

Most number lines have left be negative and right be positive. Hence, -3, which is more positive than -4, would be to the right of -4.

Step-by-step explanation:

Answer:

The triangle on the left for a is 79 degrees and the one to the right is 63 degrees

Step-by-step explanation:

A triangle is equal to 180 degrees and to find the missing side you subtract the two values that you have to get the missing one.

Answer:

Linear Equation: A linear equation is an algebraic equation. · 2. Polynomial Equation: · 3. Quadratic Equation: · 4. Trigonometric equation: · 5. Radical Equation:

Step-by-step explanation:

Answer:

1. y-intercept = 4 ⇒ slope = [tex]\frac{1}{3}[/tex]

2. y-intercept = -2 ⇒ slope = [tex]-\frac{3}{5}[/tex]

3. y-intercept = 1 ⇒ slope = 4

4. y-intercept = 3 ⇒ slope = [tex]-\frac{3}{2}[/tex]

5. y-intercept = 4 ⇒ slope = 1

Step-by-step explanation:

The slope-intercept form of the linear equation is y = m x + b, where

Let us solve the questions using the form above

1. y = [tex]\frac{1}{3}[/tex] x + 4

∵ m =  [tex]\frac{1}{3}[/tex] and b = 4

∴ y-intercept = 4 ⇒ slope =  [tex]\frac{1}{3}[/tex]

2. y = [tex]-\frac{3}{5}[/tex] x - 2

∵ m =  [tex]-\frac{3}{5}[/tex] and b = -2

∴ y-intercept = -2 ⇒ slope =  [tex]-\frac{3}{5}[/tex]

3. y = 4x + 1

∵ m = 4 and b = 1

∴ y-intercept = 1 ⇒ slope = 4

4. y = [tex]-\frac{3}{2}[/tex] x + 3

∵ m =  [tex]-\frac{3}{2}[/tex] and b = 3

∴ y-intercept = 3 ⇒ slope =  [tex]-\frac{3}{2}[/tex]

5. y = x + 4

∵ m = 1 and b = 4

∴ y-intercept = 4 ⇒ slope = 1

Answer:

(A) The probability that a bulb burns between 778 and 834 hours is 0.51118.

(B) The probability that the average light bulb life is at least 820 hours in a random sample of 40 bulbs  is 0.00079

Step-by-step explanation:

Let X denote the life time of light bulbs.

It is provided that X follows a normal distribution with mean of 800 hours and standard deviation of 40 hours.

(A)

Compute the probability that a bulb burns between 778 and 834 hours as follows:

[tex]P(778<X<834)=P(\frac{778-800}{40}<\frac{X-\mu}{\sigma}<\frac{834-800}{40})\\\\=P(-0.55<Z<0.85)\\\\=P(Z<0.85)-P(Z<-0.55)\\\\=0.80234-0.29116\\\\=0.51118[/tex]

Thus, the probability that a bulb burns between 778 and 834 hours is 0.51118.

(B)

Compute the probability that the average light bulb life is at least 820 hours in a random sample of 40 bulbs as follows:

[tex]P(\bar X\geq 820)=P(\frac{\bar X-\mu}{\sigma/\sqrt{n}}\geq \frac{820-800}{40/\sqrt{40}})\\\\=P(Z>3.16)\\\\=1-P(Z<3.16)\\\\=1-0.99921\\\\=0.00079[/tex]

Thus, the probability that the average light bulb life is at least 820 hours in a random sample of 40 bulbs  is 0.00079

Using the normal distribution and the central limit theorem, it is found that there is a:

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:

Item a:

The probability is the p-value of Z when X = 834 subtracted by the p-value of Z when X = 778, hence:

X = 834:

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

[tex]Z = \frac{834 - 800}{40}[/tex]

[tex]Z = 0.85[/tex]

[tex]Z = 0.85[/tex] has a p-value of 0.8023.

X = 778:

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

[tex]Z = \frac{778 - 800}{40}[/tex]

[tex]Z = -0.55[/tex]

[tex]Z = -0.55[/tex] has a p-value of 0.2912.

0.8023 - 0.2912 = 0.5111

0.5111 = 51.11% probability that a bulb burns between 778 and 834 hours.

Item b:

Sample of 40, hence [tex]n = 40, s = \frac{40}{\sqrt{40}}[/tex].

The probability is 1 subtracted by the p-value of Z when X = 820, hence:

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

By the Central Limit Theorem

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

[tex]Z = \frac{820 - 800}{\frac{40}{\sqrt{40}}}[/tex]

[tex]Z = 3.16[/tex]

[tex]Z = 3.16[/tex] has a p-value of 0.9992.

1 - 0.9992 = 0.0008

0.0008 = 0.08% probability that the average light bulb life is at least 820 hours.

To learn more about the normal distribution and the central limit theorem, you can take a look at https://brainly.com/question/24663213

Answer:

y+8.1<24

Step-by-step explanation:

Sum of= addition

y+8.1

less than is <

<24

Step-by-step explanation:

{

x

=

1

y

=

4

Explanation:

Take a look at your starting system of equations

{

5

x

+

y

=

9

10

x

−

7

y

=

−

18

Notice that if you multiply the first equation by

(

−

2

)

, and add the right-hand sides and the left-hand sides of the equations separately, you can eliminate the

x

-term.

This will leave you with one equation with one unknown,

y

.

{

5

x

+

y

=

9

∣

⋅

(

−

2

)

10

x

−

7

y

=

−

18

{

−

10

x

−

2

y

=

−

18

10

x

−

7

y

=

−

18

---------------------------------------------------

−

10

x

−

2

y

+

10

x

−

7

y

=

−

18

+

(

−

18

)

−

9

y

=

−

36

⇒

y

=

(

−

36

)

(

−

9

)

=

4

Now use this value of

y

in one of the two original equations to find the value of

x

5

x

+

(

4

)

=

9

5

x

=

5

⇒

x

=

5

5

=

1

Answer:

144 grams

Step-by-step explanation:

Im assuming you want to mass of grapes, do total mass subtracted by the mass of the bowl

Answer:

i belive its 19/33

Step-by-step explanation:

Answer:

ehhhh???

Step-by-step explanation:

Answer: Less than 1

Step-by-step explanation: 4.23 x 10^-5 simply translated to 0.0000423

which is less than 1.

Answer:

less than 1

Step-by-step explanation:

4.23 * 10^5 is less than 1

Answer:

90!

Step-by-step explanation:

even, ends in zero, and 9 times ten! :)

Answer: D) 32

Step-by-step explanation:

1. You have to add 5 on both side which you get x=32

2. x=32 which means 32 is the # for x

:)

Answer:

105

Step-by-step explanation:

180-(55+20)=105

105 is the missing angle because every triangle equals 180 degrees so you just subtract the angles you have already found from 180.

the person above me is correct i checked it so it is indeed 105!

Answer:

decimal - 0.875

percent - 87.50%

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

120/60=2

2 hours

The time required in minutes to set the sterilizer is 120. The correct option is B.

The mathematical expression is the combination of numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also be used to denote the logical syntax's operation order and other properties.

Given that you work in a hospital, instructions for an instrument state that it should be cleaned in the sterilizer for two hours.

The time in minutes will be calculated as:-

Time = 2 hours

Time = 2 x 60 minutes

Time = 120 minutes

Therefore, the time required in minutes to set the sterilizer is 120. The correct option is B.

To know more about an expression follow

https://brainly.com/question/11096532

#SPJ2

Answer:

[tex]1/x^5[/tex]

Step-by-step explanation:

[tex]x^-^y = 1/x^y[/tex]

Answer:

1/x^5

Step-by-step explanation:

When you have a negative exponent, you have to put 1 over that power without the negative sign in the exponent. You put 1 over x^5

Answer: 1/x^5

Answer:

50 $20 bills equals $1,000

Step-by-step explanation:

1000 / 20=50

50 $20 bills equal $1000

The unitary method is a method in which you find the value of a unit and then the value of a required number of units.

Given here $1000 bill to find its $20 equivalent we divide the amount with 20 thus $20 equivalent of $1000 is  $1000/20=50

Hence, $1000 bill equivalent of $20 is 50

Learn more about the unitary method here:

https://brainly.com/question/22056199

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Answer:

3 = 18 ( 3 * 6 = 18 ) 4 = 32 ( 4 * 8 = 32 ) 5 = 50 ( 5 * 10 = 50 ) 6 = 72 ( 6 * 12 = 72 ) 7 = 98 ( 7 * 14 = 98 ) 8 and 9 are Missing. So, there must be Pattern, 8 = 128 ( 8 * 16 = 128 ) 9 = 162 ( 9 * 18 = 162 )

Answer:

Me too not trying to get the points but how are u suppose to solve this anyway

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

Y=mx=b

m= slope

b= y- intercept

x&y are variables

Answer:

1,2,5,10

Step-by-step explanation:

Greatest common factor is 10

Answer:

a=70 b=.16 c=350

Step-by-step explanation:

50 messages is 8 dollars

Answer:

I think it's the first one... but I'm not pretty sure.

Answer:

C

Step-by-step explanation:

edge 2020

Answer:

7

Step-by-step explanation:

So:a=3

b=(-2)

c=2

Substitute the numbers into each letters

so a is represented by 3,c by 2 and b -2

therefore giving us: 2

3+(-2)=9+(-2)=7