20 &21 pleaseee 15 points

20 &21 Pleaseee 15 Points

Answers

Answer 1

Answer:

20. is B (second one)

21. is A (first one)

Step-by-step explanation:

Answer 2

Answer:

46=p x 98 because 46 is the product of multiplying the percentage(p) to 98

156+97 because subtracting a negative number is the same as adding


Related Questions

The box plots below show the miles per gallon (mpg) ratings distribution for three types of cars.

Answers

Pls help ASAP i don’t have time!!!!! Pls help ASAP i don’t have time!!!!!

need help ASAP mid term .
- 60 points

Answers

the metal bar/random line is almost the same size as the other two sides of the triangle. if one side is 32ft, then the opposite side is 32ft also. the bottom is 100ft, so we could eliminate C. because it couldnt be that number. now the bottom triangle, one side is 40ft so the other side has to be 40ft as well. its asking about the metal bar.

its either:

A. 53.2ft     or

B. 44.4

because the line is almost the same size as 32ft. its almost a equallateral triangle. i would go with A. though because if you imagine the line at the bottom of the line (100ft.) the line would go over half of it (and 53.2 is over half of 100) so i would say

A.53.2

if this didnt help let me know. and i will delete this (if i can-)

A water tank fills through two pipes. Water flows in
through one pipe at a rate of 25,000 gallons per hour
and in through the other pipe at a rate of 45,000
gallons per hour. Water leaves the system at a rate of
60,000 gallons per hour.
There are 3 of these tanks, and each tank holds
1 million gallons. Each tank is half full. Water is
entering and leaving a tank at the maximum
amounts. Determine the number of hours, x, it will
take to fill all 3 tanks one at a time.​

Answers

Answer:

130,000

Step-by-step explanation:

Answer:oh hey yulissa ✌️

Step-by-step explanation:

The vertical cross-sectional shapes of this prism are all congruent triangles.
A. True
B. False

Answers

Answer:

false

Step-by-step explanation:

I hope i helped :)

The vertical cross-sectional of a triangular prism gives a quadrilateral shape.

What is a three dimensional shape?

A three dimensional shape is a shape that have length, width and height. Example of three dimensional shapes are prism, pyramid, cone, cylinder and so on.

A triangular prism have two triangular bases and three quadrilateral lateral faces

The vertical cross-sectional of a triangular prism gives a quadrilateral shape.

Find out more on three dimensional at: https://brainly.com/question/10557391

#SPJ2

George places $5,000 into an account that earns a simple interest of 4.3%. John places $5,500 into an account that earns 4%. Who has earned the most interest at the end of 6 years?​

Answers

Answer/Step-by-step explanation:

George:

4.3% ÷ 100 = 0.043

0.043 × 5000 = 215

John:

4% ÷ 100 = 0.04

0.04 × 5500 = 220

End of 6 years:

George: 215 × 6 = 1290

John: 220 × 6 = 1320

John has earned the most interest at the end of 6yrs. $1320

Write the rate below in simplest form?
12: 144
A.3:36
B.4:48
C.1:12
D.6:72

Answers

the answer is C. 1:12, since the greatest common factor is 12. 12/12 = 1 and 144/12 = 12, therefore 1:12

Answer:

C. 1:12

Step-by-step explanation:

12 : 144 = 1 : 12 divide both numbers by 12

Correct option is C

Determine the area of the rectangle
6x + 3
X+5

Answers

Answer:

Step-by-step explanation:

multiply the two expressions

(6x + 3)(x + 5)

6x^2 + 30x + 3x + 15

6x^2 + 33x + 15

simplify if needed

3(2x^2 + 11x +5)

hope this helps <3

Harriet Cutter’s gross pay for this week is $555. She is single and claims 1 allowances. What amount will be withheld from Harriet’s pay for federal income tax?

Answers

Answer:

85 dollars will be withheld with a 7.65% income tax because she is only making 1,110 dollars.

Step-by-step explanation:

PLEASE HURRY
In a local city, the temperature at noon is Negative 3 degrees Celsius. The temperature is expected to decrease by 2.5 degrees Celsius each hour until the temperature reaches Negative 18 degrees Celsius. How many hours will it take for the temperature to reach Negative 18 degrees Celsius? 6 hours 7 hours 7.2 hours 8.4 hours

Answers

Answer:

6 hours

Step-by-step explanation:

-3-2.5-2.5-2.5-2.5-2.5-2.5=18

srry if I took too long

Answer:

6 HOURS

Step-by-step explanation:

The correct answer would be 6 hours or A!

Hope this helps! Have a great day! :))

Laura Simplified the expression 5x[(3.14+4.16)×9+2] as shown

Step 1: 5x[7.3x9+2]
Step 2. 5x[7.3x11]
Step 3. 5x80.3
Step 4. 401.5

Questions:

A. In what step did Laura first make a mistake?

B. Explain what the mistake was using mathematical detail academic language

C. Show your step by step work using mathematical detail and academic language to simplify the expression

D. What is the correct answer to the expression ​

Answers

                                      Answer and Explanation

__________________________________________________________

A. Step 2

B. Step 2 is wrong because multiplying is first before adding, and Laura added before multiplying and got 401.5 instead of 338.5

C. [tex]5\cdot\left(\left(3.14+4.16\right)\cdot9+2\right)[/tex] = [tex]?[/tex]

     [tex]5\cdot\left(\left(7.3\right)\cdot9+2\right)[/tex] = [tex]?[/tex]

     [tex]5\cdot\left(65.7+2\right)[/tex] = [tex]?[/tex]

     [tex]5\cdot\left(67.7\right)[/tex] = [tex]?[/tex]

D.  [tex]338.5[/tex]

__________________________________________________________

Hope this helps! <3

__________________________________________________________

Thomas draws a triangle with side lengths of 5 centimeters and 12 centimeters and one angle of 90. The length of the longest side of the triangle is unknown. How many different triangles can be drawn with these dimensions?

Answers

Answer:

107

Step-by-step explanation:

5.41 + k = 9.7 what is the value of k

Answers

K=9.7-5.41
K=4.29
The value of k is 4.29. Hope this help

What is the circumference of a circular swimming pool with a diameter of 20
feet? (Round your answer to the nearest tenth.)
A. 62.8 ft
B. 15.7 ft
c. 125.7 ft
D. 314 ft

Answers

Answer:

A. 62.8 ft

Step-by-step explanation:

[tex]C = \pi \: d = 3.14 \times 20 = 62.8 \: ft[/tex]

The answer is A 62.8

Can somebody help please

Answers

What is the question?

5. Evaluate 13 + 6 + 7 + 4.
b. 29
a. 2184
c. 20
d. 30

Answers

Answer:

D is the answer for the question

Answer:

30/D

Step-by-step explanation:

just add the numbers :)

Daniela got 78% on her last history test. If there were 50 questions on the test , how many did she get correct

Answers

Answer:

39.

Step-by-step explanation:

78% of 50 is 39. To calculate x% of a number y, we use the following rule: x% of y = (x / 100) × y.

EZ POINTS AND BRAINLEYIST IF YOU ANSWER
Which of the following is true about a linear function?
a: it may curve in some parts and be horizontal in others
b: it must cross the origin
c: it has a constant rate of change
d: it must contain only positive values

Answers

Answer:

b is the correct answer

Step-by-step explanation:

Ms. Guthrie spent 80% of her cash on gifts.
What fraction of her cash did she spend on gifts?
She spent type your answer...
of her cash on gift.

Answers

Answer:

She spend (8/10) or (4/5) of her cash on gift.

Step-by-step explanation:

4/5 is simplified.

but not simplified its 8/10

cuánto es 120 por 12

Answers

Answer:

120 x 12 = 1440

Step-by-step explanation:

Answer:

es 1440

Step-by-step explanation:

solo pones 120

x12

Plz help me get the right answer

Answers

Model H shows 9/10
This is because have of 10 is 5
And you would only fill in half a circle after that

Hope this helps

Answer: Choice H (upper right corner)

====================================================

Explanation:

Refer to the diagram below.

I started with the set of five circles you were given. Then I cut each of them in half. This results in 2*5 = 10 sections (each section is numbered in blue). If you shade 9 of those 10 sections, then you'll represent the fraction 9/10. This is what choice H represents, so that's why it's the answer

9/10 = 0.90 in decimal form

0.90 = 90% in percent form

Integrate the following:
[tex]\displaystyle \int \frac{x^2}{x^2+x+3}\, dx[/tex]

Answers

Answer:

[tex]\int {\frac{x^2}{x^2+x+3} } \, dx = - \frac{5\sqrt{11} }{11}arctan(\frac{\sqrt{11}(2x+1) }{11} ) - \frac{1}{2}ln|x^2+x+3| +x + C[/tex]

General Formulas and Concepts:

Pre-Algebra

Distributive Property

Algebra I

Completing the SquareRearranging Variables

Algebra II

Long Division

Calculus

U-Substitution[Integration Trick 1] Numerator Split[Integration Trick 2] Completing the SquareIntegration Rule 1: [tex]\int {cf(x)} \, dx = c\int {f(x)} \, dx[/tex]Integration Rule 2: [tex]\int {f(x)+g(x)} \, dx =\int {f(x)} \, dx + \int {g(x)} \, dx[/tex]Integration 1: [tex]\int {\frac{1}{u} } \, du =ln|u| + C[/tex]Integration 2: [tex]\int {\frac{du}{u^2+a^2} } = \frac{1}{a} arctan(\frac{u}{a} )+C[/tex]Integration 3: [tex]\int {x^n} \, dx = \frac{x^{n+1}}{n+1} +C[/tex]

Step-by-step explanation:

Step 1: Define

[tex]\int {\frac{x^2}{x^2+x+3} } \, dx[/tex]

Step 2: Simplify Function

We do long division to simplify the function inside the function.

See Attachment for Long Division Work.

Once we do long division, our function becomes [tex]1-\frac{x+3}{x^2+x+3}[/tex]

Now we rewrite our Integral: [tex]\int ({1-\frac{x+3}{x^2+x+3} }) \, dx[/tex]

Step 3: Integrate Pt. 1

Distributive Integral [Int Rule 1]:                    [tex]\int {1} \, dx - \int {\frac{x+3}{x^2+x+3} } \, dx[/tex]Integrate 1st Integral [Int 3]:                          [tex]x - \int {\frac{x+3}{x^2+x+3} } \, dx[/tex]

Step 4: Identify Variables Pt.1

Set variables for u-substitution.

u = x² + x + 3

du = (2x + 1)dx

Step 5: Integrate Pt. 2

Rewrite Integral [Int Rule 1]:                                                                [tex]x - \frac{1}{2} \int {\frac{2(x+3)}{x^2+x+3} } \, dx[/tex]Distribute 2 [Alg]:                                                                             [tex]x - \frac{1}{2} \int {\frac{2x+6}{x^2+x+3} } \, dx[/tex]Rewrite Integral [Alg]:                                                                      [tex]x - \frac{1}{2} \int {\frac{2x+1+5}{x^2+x+3} } \, dx[/tex]Rewrite Integral [Int Trick 1]:                                       [tex]x - \frac{1}{2} [\int {\frac{2x+1}{x^2+x+3} } \, dx + \int {\frac{5}{x^2+x+3} } \, dx ][/tex](2nd Int) Complete the Square:                              [tex]x - \frac{1}{2} [\int {\frac{2x+1}{x^2+x+3} } \, dx + \int {\frac{5}{(x+\frac{1}{2})^2 + \frac{11}{4} } } \, dx ][/tex]

Step 6: Identify Variables Pt. 2

Set variables for u-substitution for 2nd integral.

z = x + 1/2

dz = dx

a = √(11/4)

Step 7: Integrate Pt. 3

[Integrate] U-Substitution:                                 [tex]x - \frac{1}{2} [\int {\frac{1}{u} } \, du + \int {\frac{5}{z^2 + (\sqrt{\frac{11}{4}})^2} } \, dz ][/tex]Rewrite Integral [Int Rule 1]:                                     [tex]x - \frac{1}{2} [\int {\frac{1}{u} } \, du + 5\int {\frac{dz}{z^2 + (\sqrt{\frac{11}{4}})^2} } ][/tex]Integrate 1st Integral [Int 1]:                                       [tex]x - \frac{1}{2} [ln|u| + 5\int {\frac{dz}{z^2 + (\sqrt{\frac{11}{4}})^2} } ][/tex]Integrate 2nd Integral [Int 2]:                            [tex]x - \frac{1}{2} [ln|u| + 5(\frac{1}{\sqrt{\frac{11}{4}}}arctan(\frac{z}{\sqrt{\frac{11}{4} } } ) ) ][/tex]Distribute 5 [Alg]:                                                 [tex]x - \frac{1}{2} [ln|u| + \frac{5}{\sqrt{\frac{11}{4}}}arctan(\frac{z}{\sqrt{\frac{11}{4} } } ) ][/tex]Distribute -1/2 [Alg]:                                           [tex]x - \frac{1}{2}ln|u| - \frac{5}{2\sqrt{\frac{11}{4}}}arctan(\frac{z}{\sqrt{\frac{11}{4} } } )[/tex]Rationalize [Alg]:                                                   [tex]x - \frac{1}{2}ln|u| - \frac{5\sqrt{11} }{11}arctan(\frac{z}{\sqrt{\frac{11}{4} } } )[/tex]Resubstitute variables [Alg]:                              [tex]x - \frac{1}{2}ln|x^2+x+3| - \frac{5\sqrt{11} }{11}arctan(\frac{x+\frac{1}{2} }{\sqrt{\frac{11}{4} } } )[/tex]Simplify/Rationalize [Alg]:                     [tex]x - \frac{1}{2}ln|x^2+x+3| - \frac{5\sqrt{11} }{11}arctan(\frac{\sqrt{11}(2x+1) }{11} )[/tex]Rewrite [Alg]:                                [tex]- \frac{5\sqrt{11} }{11}arctan(\frac{\sqrt{11}(2x+1) }{11} ) - \frac{1}{2}ln|x^2+x+3| +x[/tex]Integration Constant:                            [tex]- \frac{5\sqrt{11} }{11}arctan(\frac{\sqrt{11}(2x+1) }{11} ) - \frac{1}{2}ln|x^2+x+3| +x + C[/tex]

And we have our final answer! Hope this helped you on your Calculus Journey!

hope this will help you........

50 points.


Record the simplified expression

Answers

Answer:

-4x+5

Step-by-step explanation:

-(4x-2) change sign of each in parenthesis so they are now -4+2

now you have -4x+2+3 add like terms

now you have -4x+5

Distribute

[tex]\sf \longmapsto−4x+2+3[/tex]

Combine like terms

[tex]\sf \longmapsto−4x+2+3[/tex]

[tex]\sf \longmapsto(−4x)+(2+3)[/tex]

[tex]\sf \longmapsto−4x+5[/tex]

I need help please!!!!!

Answers

Obtuse angle. If wrong I’m sorry lol

What is the equation of the line in slope-intercept form? Please help thank you

Answers

Answer:

y = -5/4x + 5

Step-by-step explanation:

the slope is down 5 over 4 and it crosses the y-axis at 5

can someone help me pleas

Answers

The last choice is the correct answer (-1,-2)

Answer:

(-1,-2)

Step-by-step explanation:

D's original postion/location is at (1,-2)

You basically take the point D and keep your y coordinate, -2, the same /constant and change your x coordinate (flip the sign)

So keeping the y-coordinate constant, -2 changing positive 1 to negative 1

So.. D's location reflected on the y axis is (-1,-2)

*Let's Say: D was reflected on the x-axis you would do the opposite by keeping the x coordinate constant and flipping the y-coordinate sign (to positive)

So...

D's location reflected on the x-axis is (1,2)

which of the following is not a valid probability?
A. 1
B. 0
C. 0.0000001
D. 1.0002

Answers

Answer:

0

Step-by-step explanation:

The Reiter family uses three different-sized scoops to serve mashed potatoes : blobs, globs and gobs (these names are so weird aren't they). 2 blobs are equal to 1 glob, and 5 globs equal 3 gobs of mashed potatoes. A bowl holds 12 gobs of potatoes. How many blobs are there in the bowl? RATIO PROBLEM!!! DUH, DUH, DUHHHHHHH.

Answers

Answer: 30 blobs

Step-by-step explanation:

The ratios are:

2 blobs: 1 glob

5 globs: 3 gobs

If the bowl can hold 12 gobs, then we can multiply the 5:3 ratio by 4, to make solving easier. We get the ratio 15:12 and then we need to multiply the 2:1 ratio by 15 to get the answer 30 blobs

Give three examples of equations where the solution will be unique that is only one solution is possible.

Answers

Answer:

5x = 3x

4+8t-y=y-t+8

98/r=34t

Step-by-step explanation:

someone please help!! 60 points!!

Answers

Answer:

It C am sure it correct....

Answer:

I think the answer would be C.

Quick please help

The graph below represents the number of toys Rudolfo has in his toy box after x number of
months. Which equation below best represents this graph?

A. Y=15x
B. Y=30x
C. Y= 1/15x
d. y = 10x

Answers

Answer:

I would say the answer is C

Step-by-step explanation:

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