1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Reika [66]
3 years ago
13

Question 2: You want to donate 30% of the $400 earned at your yard sale to

Mathematics
1 answer:
lilavasa [31]3 years ago
4 0

Answer:

10%= 40$ 30%=120$

Step-by-step explanation:

ok so u earn 400$ at a yard sale. you divide it by 100 400/100=4. ok so then you multiply four by 10=40 and that is 10% multiply it by 30 u get 120 or 30%

sorry for the bad spelling

You might be interested in
Can someone explain this to me & also give me the answer for it
Vikentia [17]
Hey there!

You can write out equations for both of these situations. 

The first situation can be represented by f(x) = 382 + 2x, where 382 is the initial cost, x is the total amount of miles, 2x is the cost per additional mile, and f(x) equals to total that Jason has had to pay to drive his truck. 

The second situation can be presented by g(x) = 379 + 5x, where 379 is the initial amount Jason will get paid, x is the amount of miles he's driven, 5x is the money he's being paid depending on how many miles he's driven, and g(x) is the total amount he's been paid. 

You can graph these two equations on the computer or by hand to find where they will meet up. The place where they intersect will be the place where Jason breaks even. You can see on the graph I attached that, after one mile, the lines intersect and Jason spends and makes a total of 384 dollars. 

Hope this helped you out! :-)

4 0
3 years ago
Read 2 more answers
PLEASE HELP WILL MARK WILL MARK BRAINLIEST THANK YOU
Anika [276]

Answer:

We are given that the frame is 2 units wide, which means that we subtract the length of the outer frame by 2 units for each side:

7 - 2 -2 = 3

9 - 2 -2 = 5

Now, we have the length and width for the smaller rectangle, so we use the area formula (area = length*width) to get:

3*5 = 15

Step-by-step explanation:

Please support my answer.

6 0
2 years ago
A gym charges a $50 activation fee and $17 per month for a membership. If you spend $356, for how many months do you have a gym
Paha777 [63]
18 months bc 356-50=306/17=18                                  
6 0
3 years ago
is the following statement sometimes,always or never true?negative - positive =negative defend your answer
Elanso [62]
It is always negative, because it keeps going down on the number line. Say it is negative 8 minus 5, it would be negative 13, because it adds to the negatives, so it would go deeper into the negatives.
7 0
3 years ago
A trough has ends shaped like isosceles triangles, with width 5 m and height 7 m, and the trough is 12 m long. Water is being pu
Svet_ta [14]

Answer:

\dfrac{dh}{dt}=21 \text{m/min}

the rate of change of height when the water is 1 meter deep is 21 m/min

Step-by-step explanation:

First we need to find the volume of the trough given its dimensions and shape: (it has a prism shape so we can directly use that formula OR we can multiply the area of its triangular face with the length of the trough)

V = \dfrac{1}{2}(bh)\times L

here L is a constant since that won't change as the water is being filled in the trough, however 'b' and 'h' will be changing. The equation has two independent variables and we need to convert this equation so it is only dependent on 'h' (the height of the water).

As its an isosceles triangle we can find a relationship between b and h. the ratio between the b and h will be always be the same:

\dfrac{b}{h} = \dfrac{5}{7}

b=\dfrac{5}{7}h this can be substituted back in the volume equation

V = \dfrac{5}{14}h^2L

the rate of the water flowing in is:

\dfrac{dV}{dt} = 6

The question is asking for the rate of change of height (m/min) hence that can be denoted as: \frac{dh}{dt}

Using the chainrule:

\dfrac{dh}{dt}=\dfrac{dh}{dV}\times \dfrac{dV}{dt}

the only thing missing in this equation is dh/dV which can be easily obtained by differentiating the volume equation with respect to h

V = \dfrac{5}{14}h^2L

\dfrac{dV}{dh} = \dfrac{5}{7}hL

reciprocating

\dfrac{dh}{dV} = \dfrac{7}{5hL}

plugging everything in the chain rule equation:

\dfrac{dh}{dt}=\dfrac{dh}{dV}\times \dfrac{dV}{dt}

\dfrac{dh}{dt}=\dfrac{7}{5hL}\times 6

\dfrac{dh}{dt}=\dfrac{42}{5hL}

L = 12, and h = 1 (when the water is 1m deep)

\dfrac{dh}{dt}=\dfrac{42}{5(1)(12)}

\dfrac{dh}{dt}=21 \text{m/min}

the rate of change of height when the water is 1 meter deep is 21 m/min

6 0
3 years ago
Read 2 more answers
Other questions:
  • A recipe requires 1/4 of a cup of cranberries for 1 batch of scones. How many batches of scones can be made using 6 1/2 cups of
    7·2 answers
  • At best buy they have a 42" TV that sells for $1250 and is on sale for 15% and sales tax is
    15·1 answer
  • someone earns a commission she makes 4.5% of the amount she sells she sold 800$ worth of cloths how much was her commission​
    12·1 answer
  • 8-3x=17 what does x equal
    14·2 answers
  • Write 0.65 as a fraction
    10·2 answers
  • A chemist is mixing a 30% salt solution with a 20% salt solution to make 35 L of a new solution that will contain 25% salt. How
    14·1 answer
  • Step by step linear combination. 3x+2y=-4 4x-y=13
    14·1 answer
  • Find the volume of each cone below
    10·1 answer
  • Brayden says that the probability of catching a cold is 1/2 because there are two possible outcomes, catching a cold and not cat
    7·1 answer
  • Read this sentence and answer the question below:
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!