Connor believed that he did not do well in his ABC physics test. All ABC physics test scores are normally distributed with a mean of 20 and standard deviation of 8. A student gets an F grade if he or she scores less than 5. If Connor is at the 20th percentile, does he pass the test?

Answer:

2.

a. true.

b. false.

c. true.

d. true.

Answer:

i think its c

sorry if im wrong!

Step-by-step explanation:

Answer:

The multiples of 5 are (b.10,25,45,60)

Answer:its equal to for ?

Step-by-step explanation:..

Answer:

Step-by-step explanation:

x+94  = 4x+25

69 = 3x

x = 23°

Answer:

Arc length, S...is given  by

S  =  r (theta  in radians)

So

S  = 28  (3π/4)      =  28 (3/4)*π =  [ 21 π ]   inches    

Step-by-step explanation:

The length of the arc  intercepted by a central angle that measures 3π/4 radians will be 113.04 millimeters.

The circle is a closed two dimensional figure , in which the set of all points is equidistance from the center.

Given that;

The central angle =  3π/4

And, A circle has a radius of  48 millimeters.

Now,

We know that in circle;

Arc = Radius × Angle

Substitute all the values, we get;

⇒ Arc = 48 ×  3π/4

⇒ Arc = 3 × 12 × 3.14

⇒ Arc = 113.04 millimeters

Thus, The length of the arc will be;

Arc = 113.04 millimeters

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The answer is A. 245 words  can he type in 7 minutes.

In mathematics, multiplication is a method of finding the product of two or more numbers. It is one of the basic arithmetic operations, that we use in everyday life.

here, we have,

Milo types 35 words per minute.

words can he type in 7 minutes is 35*7

                                                      =245

because I have to multiple the amount of words he can type in one minute by 7.

hence, The answer is A. 245 words  can he type in 7 minutes.

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Answer:

x=8

Step-by-step explanation:

7/x/2=28

2/7• 7x/2= 2/7•28

x=8

Answer:

24

Step-by-step explanation:

first the left part: 1x10=10, 10-4=6

Right part: 2x10=20, 20-2=18

And the final 18+6=24

Answer:

B

Step-by-step explanation:

it would be b cause like when there like  a parentheses beside a number it  means to times so yea. and please mark braonliest

Answer:

Width = x

Length = 3x+4

Step-by-step explanation:

Equations

Let's call x = width of the rectangle.

We know the length is 4 feet longer than 3 times the width, thus:

length = 3x + 4

Dimensions of the rectangle:

Width = x

Length = 3x+4

Answer:

0.004

Step-by-step explanation:

Answer:

0.004

Step-by-step explanation:

Answer:

domain is 6,5,4,3

range is 8,9,10,11

Answer: They sold 65 tetras.

Step-by-step explanation:

Let x= Number of tetras

y= Number of angel fish.

As per given,

x+y= 110                  (i)

0.40x+1.20y=80         (ii)

Multiply 2.5 on both sides of (ii), we get

x+3y=200        (iii)

Eliminate (i) from (iii)

[tex]2y=90\\\\\Rightarrow y=45[/tex]

Put value of y in (i)

[tex]x+45=110\Rightarrow x=65[/tex]

Hence, they sold 65 tetras.

Answer:

Not possiblie

Step-by-step explanation:

I took the test

Answer:

not possible

Step-by-step explanation:

i also took the test ^^

Answer

y = 3(2) = 6

Thus, she tutored for 2 hours and cleaned tables for 6 hours.

Explanation

These questions are all about writing down mathematically what they are saying in words. Use variables whenever there is an unknown, and try to write equalities based on what is said.

So, taking it one step at a time:

Eva is working two summer jobs,

Cool.

making $16 per hour and $8 per hour clearing tables.

I'm guessing this is $16/hr for tutoring, and $8/hr for clearing tables?

Last week Eva worked 3 times as many hours clearing tables as she worked tutoring hours

Let C = the number of hours Eva worked at clearing tables

Let T = the number of hours Eva worked at tutoring

Last week Eva worked C = 3 * T

and earned a total of $80.

The amount she earned at each place is:

8*C = money from clearing tables

16*T = money from tutoring

8*C + 16*T = 80

Solve a system of equations in order to determine the number of hours Eva worked tutoring last week, X, and the number of hours Eva worked clearing tables last week, Y,

Welp, I guess they wanted X and Y but it doesn't matter. From the equations above we can say:

8*C + 16*T = 80

C = 3*T

That should be enough to solve for:

C = ?

T = ?

Let x = # of hrs spent tutoring, y = # of hrs spent cleaning tables

We know she worked 3 times as many hours cleaning tables as she did tutoring, which implies:

3x = y

Also, her total earnings add up to $80, which implies:

16x + 8y = 80

This gives us the following system of equations:

3x = y

16x + 8y = 80

Let's make the substitution y = 3x into the 2nd equation:

16x + 8(3x) = 80

16x + 24x = 80

40x = 80

x = 2.

Next, plug in x = 2 into the first equation:

y = 3(2) = 6

Thus, she tutored for 2 hours and cleaned tables for 6 hours.

Answer: 40% of 50 is 14

Step-by-step explanation:

Answer:

x = -49/61

Step-by-step explanation:

I hope I helped!!

let me know if you want me to show the steps:)

Answer:

x = -49/61.

Step-by-step explanation:

6(10x+8)=2-(x+3)

60x + 48 = 2 - x - 3

60x + x = 2 - 3 - 48

61x = -49

x = -49/61

Answer/Step-by-step explanation:

Decompose each shape, find the volume of each cuboid, and add both volumes you get together.

Recall: volume of cuboid = L*W*H

4. Volume of cuboid 1: L*W*H = 12*10*4 = 480 ft³

Volume of cuboid 2: L*W*H = 12*3*5 = 180 ft³

Volume of the shape = 480 + 180 = 660 in.³

5. Volume of cuboid 1: L*W*H = 11*2*5 = 110 yd³

Volume of cuboid 2: L*W*H = 10*4*2 = 80 yd³

Volume of the shape = 110 + 80 = 190 yd³

6. Volume of cuboid 1: L*W*H = 8*3*2 = 48 in.³

Volume of cuboid 2: L*W*H = 14*2*3 = 84 in.³

Volume of the shape = 48 + 84 = 132 in.³

7. Volume of cuboid 1: L*W*H = 5*3*2 = 30 yd³

Volume of cuboid 2: L*W*H = 6*2*5 = 60 yd³

Volume of the shape = 30 + 60 = 90 yd³

8. Volume of cuboid 1: L*W*H = 12*2*18 = 432 in.³

Volume of cuboid 2: L*W*H = 18*5*6 = 540 in.³

Volume of the shape = 432 + 540 = 972 in.³

9. Volume of cuboid 1: L*W*H = 13*11*4 = 572 ft³

Volume of cuboid 2: L*W*H = 13*6*7 = 546 ft³

Volume of the shape = 572 + 546 = 1,118 ft³

Answer

what are the answer choices

Step-by-step explanation:

I says which of the following so I need the choices.

Answer:

i pretty sure its 10cm

Step-by-step explanation:

Answer:

1.6

Step-by-step explanation:

1.6!

Step-by-step explanation:

Answer:

There are 86 acres of old-growth trees.

Step-by-step explanation:

Answer:

A. 45 + b = 88, so b = $43

Step-by-step explanation:

We know that he's earned $45 dollars, plus b dollars for babysitting. This gives us the first part of the equation (45 + b). The total amount he earned was $88, so 45 + b = 88.

Then, you can solve it.

45 + b = 88

-45         -45

0 +  b = 43

b = 43

This means he earned $43 babysitting his younger brother.

Hope this helps :)

Answer:

Step-by-step explanation:

Answer:

A. 45 + b = 88, so b = $43

Step-by-step explanation:

We know that he's earned $45 dollars, plus b dollars for babysitting. This gives us the first part of the equation (45 + b). The total amount he earned was $88, so 45 + b = 88.

Then, you can solve it.

45 + b = 88

-45         -45

0 +  b = 43

b = 43

This means he earned $43 babysitting his younger brother.

Hope this helps :)

Answer:

b = 8.89, c = 11.96 and m∠B = 48°

Step-by-step explanation:

From the given triangle ABC,

We will apply sine ratio for angle A,

sin(A) = [tex]\frac{\text{Opposite side}}{\text{Hypotenuse}}[/tex]

sin(42)° = [tex]\frac{BC}{AB}[/tex]

sin(42)° = [tex]\frac{8}{AB}[/tex]

AB = [tex]\frac{8}{\text{sin}(42)}[/tex]

AB = 11.96

c = 11.96

By triangle sum theorem,

m∠A + m∠B + m∠C = 180°

42° + m∠B + 90° = 180°

m∠B = 180 - 132

m∠B = 48°

By cosine ratio of angle A,

cos(A) = [tex]\frac{\text{Adjacent side}}{\text{Hypotenuse}}[/tex]

cos(42)° = [tex]\frac{AC}{AB}[/tex]

AC = AB.cos(42)°

AC = (11.96)cos(42)°

AC = 8.89

b = 8.89