Pls help now. -2/5 -4/5 + -9/10 =

Answer:

fwoggy

Step-by-step explanation:

Answer:

At 10 days, no line is above the '0' means no one is producing widgets at 10 days point. Since the y axis represents number of widgets produced, this means none of the plants have produced more than 0 widgets yet.

Answer:

Step-by-step explanation:

[tex]\frac{15}{1000} \times 100=1.5[/tex]

The option that best describes the slope of the graph of the equation in the xy-plane is: D) For every increase of 1 in the average customer rating, the estimated increase in income is $44.

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Answer:

1

144

8/343

0.16

4/9

0.343

Answer

3.5 hours

Step-by-step explanation:

Let us represent

The time spent walking as x

The time spent riding as y

Jim began a 146​-mile bicycle trip to build up stamina for a triathlete competition.​ Unfortunately, his bicycle chain​ broke, so he finished the trip walking. The whole trip took 5 hours.

Hence:

x + y = 5.... Equation 1

x = 5 - y

If Jim walks at a rate of 4 miles per hour and rides at 40 miles per​ hour,

The formula for Distance = Speed × time. Hence,

4 × x + 40 × y = 146 miles

4x + 40y = 146.... Equation 2

We substitute 5 - y for x in Equation 2

4(5 - y) + 40y = 146

20 - 4y + 40y = 146

Subtract 20 from both sides

20 - 20 - 4y + 40y = 146 - 20

- 4y + 40y = 146 - 20

36y = 126

y = 126/36

y = 3.5 hours

Since the time he spent raiding his bicycle is represented by "y", the amount of time he spent on the bicycle is 3.5 hours      

I think this is right I had this question I think it was the same one I dont know tho

Answer:

Bottom left

Step-by-step explanation:

Dots are on the inside and outside of the line as well as being on the line

Answer:

Step-by-step explanation:

a=F/m

a=18/4.5

a=4 m/s/s

hope this helped! :D

Answer:

The answer is A

Step-by-step explanation:

Supplementary angles are angles which add up to 180°

∠1 and ∠3 add up to 180°, so they are supplementary.

Answer:

width = 4

Step-by-step explanation:

Use the formula for finding width, and plug in the numbers

w = V/h*l

w = 300/(5*15)

Simplify.

w = 300/(5*15)

w = 4

The length of x in the right triangle is 31.9 units.

A right triangle is a triangle that has one of its angles as 90 degrees. The sum of angles in a triangle is 180 degrees.

Therefore, the side of a right triangle can be found using trigonometric ratios as follows:

Hence,

cos 15° = adjacent / hypotenuse

adjacent side = x

hypotenuse side = 33 units

cos 15° = x / 33

cross multiply

x = 33 cos 15°

x = 33 × 0.96592582628

x = 31.8755522675

Therefore,

x = 31.9 units

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Answer:

Step-by-step explanation:

Together:

Dien needs  x seconds to eat pizza

Jane needs  x - 5 seconds to eat pizza

In one second, Dien can eat 1/x, Jane can eat 1/(x - 5), together 1/6 of a pizza

Dien can eat a pizza in 15 seconds, Jane can eat a pizza in 10 seconds

Answer:

13/2

Step-by-step explanation:

2x-8=5

2x=5+8

2x=13

x=13/2

hope it helps

Answer:

8 full gas cans

Step-by-step explanation:

The volume of the rectangle is 8000 cm³. That divided by 1000 is 8...

240 because I know how to do this

Answer:

hi

Step-by-step explanation:

According to the Rational Roots Theorem, the possible rational roots are all the factors of the constant term expressed over the factors of the leading coefficient of the polynomial function. The reason is that the numerator of this rational root is a factor of 4 and the denominator is a factor of 25.

DOES IT HELP?!

Answer: D

Step-by-step explanation: Got it right

What is the full question!?

Answer:

Then if each would bring 1 of each so there would be 2 pizzas and 2 bag of chips

Step-by-step explanation:

lol id.k/ if this was supposed to be a joke but here I am ◑﹏◐

Answer:      2. 3 and 4. -3

Step-by-step explanation:

Answer:

1/4

Step-by-step explanation:

I think that the expression is correct

(1/2)^3 x 2 = 1/8 x 2 = 1/4

Answer:

For the .5s, go between the numbers for example, 4.5 is between 4 and 5 so you graph between them. Remember that the rule is (x,y) so graph the x (first number) on the horizontal line and graph the y (second number) on the vertical line.

Answer:

Integers are any whole number negative or positive

Step-by-step explanation:

Answer:

R+O(I think)

Step-by-step explanation:

The odds of drawing that particular card is 1/7. The odds of drawing a red card are 5/7 and a blue card, 2/7. (This is just my answer)

Answer:

Red 1

B OR O

R AND O

Red 3

B OR O

B'

E'

Red 5

E'

R OR E

R AND O

Step-by-step explanation:

Answer:

19a−219/18

Step-by-step explanation:

(2)/(3)a-7+(7)/(18)a-5(1)/(6)

=19a−219/18

Answer:

x - 6.

Step-by-step explanation:

3(x-6) = 3x -18

3x -18 + 4x + 12 -6x = x - 6

Answer:

3. No

4. Yes

5. Yes

Step-by-step explanation:

Ez and good luck

Answer:

3. no

4. yes equation: [tex]y=x+4[/tex]

5. yes equation: [tex]y=-2x+3[/tex]

Step-by-step explanation:

3. you can get it to that y=mx+b because it has x to the power 2

4. you just need to reverse the equation instead of the RHS of the equation 4+x it will be x+4

5. the same as question number 4

Answer:

a = 19

Step-by-step explanation:

-2(a + 3) = -4a + 32

-2a - 6 = -4a +32

+2a        +2a      

-6 = -2a + 32

-32         -32

-38 = -2a

divide by -2

a = 19

Answer:

a=19

Step-by-step explanation:

-2(a+3) = -4a + 32

-2a - 6 = -4a + 32(Group like terms)

-2a+4a=32+6

2a=38(Divide both sides by 2)

a=19

Complete question is;

Scores of an IQ test have a​ bell-shaped distribution with a mean of 100 and a standard deviation of 13. Use the empirical rule to determine the following.

​(a) What percentage of people has an IQ score between 87 and 113​?

​(b) What percentage of people has an IQ score less than 74 or greater than 126​? ​

(c) What percentage of people has an IQ score greater than 139​?

Answer:

A) 68% of the people had an IQ score between 87 and 113

B) 5% of the people had IQ scores less than 74 and greater than 126.

C) 0.15% had an IQ score greater than 139

Step-by-step explanation:

We are given;

Mean; x¯ = 100

Standard deviation; σ = 13

According to the empirical rule in statistics;

>> 68% of the data lies within one standard deviation of the mean

>> 95% of the data lies within two standard deviations of the mean

>> 99.7% of the data lies within three standard deviations

A) We want to find the percentage of people with an IQ score between 87 and 113.

Within one standard deviation, we have;

x¯ ± σ

>> (100 - 13), (100 + 13)

>> (87, 113) which is the range we are looking for.

Thus, 68% of the people had an IQ score between 87 and 113

B) we want to find percentage of people has an IQ score less than 74 or greater than 126.

Let's first find those who had between 74 and 126.

Let's use two standard deviations within the mean.

x¯ ± 2σ

>> (100 - (2×13)), (100 + (2×13))

>> (74, 126) which is the range we are looking for.

So percentage that have IQ scores between 74 and 126 is 95%

Thus;

Percentage of those who had less than 74 and greater than 126 is;

P = 1 - 95%

P = 5%

C) we want to find the percentage of people that had an IQ score greater than 139.

Let's use the z-score formula;

z = (x¯ - μ)/σ

z = (139 - 100)/13

z = 39/13

z = 3

This means it is 3 standard deviations above the mean.

Thus;

Since it's one side outside the mean, then;

Percentage of people with an IQ score greater than 139 = (1 - 99.7%)/2 = 0.3%/2 = 0.15%

Answer:

74 degrees

The angles are adjacent, since they have a common side (adjacent basically means right next to each other).

Step-by-step explanation:

180 - 106 = 74

Both angles are supplementary, since they add up to 180 (make a straight line together).