Mathematics High School

Yesterday, there were 100 problems assigned for math homework. Deb did 70% of them
correctly. How many problems did Deb get right?
problems
Submit
Worltout

Answers

Answer 1

Answer:

70 problems are correct

Step-by-step explanation:

Related Questions

:) ur thoughts on this???

Answers

Answer:

it looks dead ..............

Greyson rides his bike at a constant rate. In 30 minutes, Greyson can bike 7 miles. I need help on number 3.

Answers

Step-by-step explanation:

The answer is In the picture above

I lien ratios for problems like these.

7miles/30 minutes = x miles/105 minutes

Cross multiply
(7miles)(105 minutes) = (30 miles) (x)
735 = 30x
x = 24.5 miles

You can also divide 7 by 30 to get miles/ minute = 0.233 and then multiply that by 105 minutes

0.2333 x 105 = 24.5 miles

Not super good at understanding surface area yet, someone answer it please.

Answers

It’s 175.5 multiply length x with x height

You start out with a penny that will double every day for 30 days. Find the average rate of change from day 7 to day 14. Remember that this function has already been shown to be f(x)=0.01(2)^x.

Answers

Answer:

$23.22 per day.

Step-by-step explanation:

For a general function f(x), the average rate of change between A and B (when B > A) is:

[tex]r = \frac{f(B) - f(A)}{B - A}[/tex]

In this case we know that the function is:

f(x) = 0.01*(2)^x

And we want to find the average rate of change from day 7 to day 14

Then if we use the above equation we get that the rate of change from day 7 to day 14 is:

[tex]r = \frac{0.01*(2)^{14} - 0.01*(2)^7}{14 - 7} = 23.22[/tex]

Because this equation is in dollars, we can conclude that the average rate of change between day 7 and day 14 is $23.22 per day.

An average rate of change between A and B (where B>A) for a generic function [tex]f(x)[/tex] is:

[tex]\to r=\frac{f(B)-f(A)}{B-A}\\\\[/tex]

In this situation, the function is:

[tex]\to f(x) = 0.01\times (2)^x[/tex]

And we'd like to calculate the average rate of change from day 7 to day 14.Using the aforementioned equation, we can calculate the rate of change from day 7 to day 14 as follows:

[tex]\to r=\frac{0.01\times 2^{14} -0.01 \times 2^7}{14-7}=23.22[/tex]

Since this equation is stated in dollars, we can calculate that the average rate of change between days 7 and 14 is [tex]\$23.22[/tex] each day.

Learn more:

brainly.com/question/12997887

Hey guys, I'll be posting 5 questions, and here's #1 :) I'll give brainliest for the best answer.
The question is about volume, and I provided an image :)

Answers

Answer:

B

Step-by-step explanation:

Volume of a cone: pi r^2 h/3 where h is height and r is radius.

So pi *72.25 (8.5^2) *6( 18/3)= 1361.8.

Have a great day!

Greg is at his house he gets in his car drives north 9.6 miles and stops at a store then he turns around and drives south 8.4 miles to his friends house how far is the friends house from Greg’s houses?

Answers

Hhahah 55644 tgxeth



91x 13= ytz 2564

A jar contains 40 marbles. 12 are green, 14 are blue and the rest are red. What is the probability of picking a green marble?

Answers

Answer:

12 out of 40 or in simplist terms 3/10

I need help with arc measure please help I beg of you

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i think it’s 93 cause it’s a central angle and then the measure is the same thing. not sure tho

Please help me :(bbbbbb

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Answer:

im sorry this seems to not be correctly stated

Step-by-step explanation:

If your input is 5 what is the output?

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Answer:

When the input is 5, the output is 11.

Step-by-step explanation:

Replace x with 5:  3(5) - 4 = 15 - 4 = 11

When the input is 5, the output is 11.

The input is 5 the output is 1

g(1) = 4

g(n) = g(n-1).(-3)
g(3)=

Answers

Answer

g(1) = 4

g(n) = g(n-1).(-3)

g(3)= 2g(2) = 24 = 16

find rational numbers between -3/2 and 5/3

Answers

Answer:

Five rational numbers between -5/3 and -8/7 are- Read more on Sarthaks.com - https://www.sarthaks.com/830151/find-five-rational-numbers-between-5-3and-8-7

Step-by-step explanation:

Mhanifa please help im almost done!!

Answers

Answer:

Easy way is to plot the points and confirm visually.

See the attached

We can see opposite sides are parallel and congruent.

This confirms the quadrilateral is a parallelogram.

Jamie sees a sale at the Gaming Store where all games are the same price. He buys 3 video games. His sister talks him into also buying two $1.50 candy bars and a $2.00 drink for a total of $57.50. Write an equation to find the price of one video game.

Answers

Answer: 3x + 5 = 57.50

Step-by-step explanation:

Assume that the price of one video game is x. Jamie bought 3 video games so the expression will be:

= 3x

His sister talked him into buying two $1.50 candy bars and a $2.00 drink. The total of this is:

= 1.50 + 1.50 + 2.00

= $5.00

The total amount spent on both the video game and the snacks is $57.50. Equation will therefore be:

3x + 5 = 57.50

Please help and I’ll give brainliest. No link answers though.

Answers

Answer:

I think it's positive

Step-by-step explanation: sorry if i'm wrong tho

which is the correct inequality?

Answers

Answer:

x<8 is correct

Step-by-step explanation:

Find the volume of a pyramid with a square base, where the side length of the base is
11.8 ft and the height of the pyramid is 5.2 ft. Round your answer to the nearest
tenth of a cubic foot.

Answers

Answer:

241.3ft^3

Step-by-step explanation:

Volume of Pyramid:

V=\frac{1}{3}Bh

V=

3

1

​

Bh

\text{Side length of base}=11.8

Side length of base=11.8

\text{Area of base}=11.8^2=139.24

Area of base=11.8

2

=139.24

B=

B=

\,\,139.24

139.24

h=

h=

\,\,5.2

5.2

V=

V=

\,\,\frac{1}{3}Bh

3

1

​

Bh

V=

V=

\,\,\frac{1}{3}(139.24)(5.2)

3

1

​

(139.24)(5.2)

V=

V=

\,\,241.3493333

241.3493333

what is 8 030 070 in words​

Answers

Answer:

eigth million thirty thousand seventy

A cylinder has a base radius of3 and a hight of 20m what is its volume in cubic m,to the nearest tenths

Answers

Answer:

hi

Step-by-step explanation:

Answer:

V = 565.5

Step-by-step explanation:

Cylinder Formulas in terms of r and h

Calculate the volume of a cylinder: V = πr2h Calculate the lateral surface area of a cylinder (just the curved outside): L = 2πrh Calculate the top and bottom surface area of a cylinder (2 circles): T = B = πr2 Total surface area of a closed cylinder is: A = L + T + B = 2πrh + 2(πr2) = 2πr(h+r)

Find cos theta if tan theta=9/2

Answers

Answer:

square root of 654

Step-by-step explanation:

need help with this !!!

Answers

Answer:

(5,20)

Step-by-step explanation:

solve for the first variable in one of the equations
x = 5
y = 20

What is the perimiter of a quadrilateral with verticles at (5,2), (10,2), (5,5), and (10,5)

Answers

Answer:

55

Step-by-step explanation:

Find the area of a circle with radius 6yd.
Use the value 3.14 for and do not round your answer.
Be sure to include the correct unit in your answer.

Answers

Answer:

X30

Step-by-step explanation:

The answer is 113.04 yd^2

Find the volume for each.​

Answers

Answer:

Volume of cuboid = 1,386 inch³

Step-by-step explanation:

Given:

Length of cuboid = 14 inch

Width of cuboid = 9 inch

Height of cuboid = 11 inch

Find:

Volume of cuboid

Computation:

Volume of cuboid = Length of cuboid x Width of cuboid x Height of cuboid

Volume of cuboid = 14 inch x 9 inch x 11 inch

Volume of cuboid = 126 inch² x 11 inch

Volume of cuboid = 1,386 inch³

what is 4+9+8+6+5+44+88+90+78

Answers

Step-by-step explanation:

4+9+8+6+5+44+88+90+78= 332

4+9+8+6+5+44+88+90+78=332

The price of an item has been reduced by 60%. The original price was $45. What is the price of the item now?​

Answers

Answer:

$27

Step-by-step explanation:

Part A. Write the equation 5=10x−5y in slope-intercept form.

Part B. Identify the y-intercept.

Answers

Answer:

Part A: y=2x-1

Part B: -1

PART A:

slope intercept form is y=mx + b

5=10x-5y subtract 10 both sides
-10x+5=-5y divide -5 both sides
2x-1=y

slope intercept form is y=2x-1

PART B:

In slope intercept form (y=mx+b), the y intercept is always ‘b’ therefore using the new equation the y intercept= -1




Please help me with the answer to these. The pictures go together for the problem

Answers

Answer:

6.6

Step-by-step explanation:

Rob is saving to buy a new MP3 player. For every $16 he earns babysitting, he saves $9. On Saturday, Rob earned $32 babysitting. How much money did he save?



If he earned $32, he saved $____

Answers

Answer:

18 dollars

Step-by-step explanation:

32÷16=2

9×2=18

Determine the equation of the midline of the following graph. ITS NOT HARD I JUSST DONT KNOW IT!!!!HELP PLEASE.

Answers

Answer:

y=1

Step-by-step explanation:

it is in the middle of the maximum and minimum.

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