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Leviafan [203]
3 years ago
5

A street vendor sells two types of newspapers, one for $.25 and the other for $.40. If she sold 100 newspapers for $28.00, how m

any newspapers did she sell at $.25?
Mathematics
2 answers:
yaroslaw [1]3 years ago
4 0

Answer:

Bruh answer if your looking in 2020

Step-by-step explanation:

den301095 [7]3 years ago
3 0

Answer:

A) 80

Step-by-step explanation:

This is the RSM answer

wow u asked this in 2018

anyone else from RSM...

it is (A)

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Y= -3/2x-2 graph graph
evablogger [386]

Answer:

To graph (like the provided picture) you must understand y=mx+b. Your m would stand for your slope which you need to determine with rise over run. Rise over run can be done by finding a place where both the x and y values are lined up. (0,-2) can be used as an example from the picture. You then want to find the next point where the x and y values line up which (-2,1) can be used. Go up 3 units and go to the LEFT 2 times which makes this a negative run. The slope would then be represented as -3/2.

Your x value stands for your x-value moving up or down while you b value stands for your y-intercept which point (0,-2) is represented as. Y represents the y value after the equation is plugged in with x and solved.

8 0
3 years ago
Please help asap 40 pts
kap26 [50]
Short Answer: C
Remark

The first thing you really ought to do is get a graph from one of the graphing programs on the internet. Most of the time, I use Desmos. That will give you the answer. I will put the graph at the bottom of the page.

The second thing you could do is just set up the given points to see which one gives you the answer.

The third thing (and I'll do this one) is to actually solve the problem by completing the square.

Givens
a = -2
b = 6
c = -1

Solution
Put brackets around the first two terms.
y = (- 2x^2 + 6x ) - 1                               Take out the common factor of - 2
y = -2(x^2 - 3x ) - 1                                 Complete the square inside the brackets.

y = -2(x^2 - 3x + (3/2)^2 ) - 1                  Add what it took to complete the square after the - 1

y = -2(x^2 - 3x + (3/2)^2 ) - 1 + 2(3/2)^2 * See remark at end to see why its +
y = -2(x^2 - 3x + 9/4) - 1 + 2 * (9/4)
y = -2(x^2 - 3x + 9/4) - 1 + 18/4
y = -2(x^2 - 3x + 9/4) + 14/4         Show the brackets in square form.
y = -2(x - 3/2)^2 + 14/4  but 3/2 =1.5 and 14/4 = 3.5
y = -2(x - 1.5)^2 + 3.5

The axis of symmetry is x = 1.5  The vertex is (1.5, 3.5)

Discussion
You may wonder why you are adding 18/4 outside the brackets when you are completing the square and all you have inside the brackets is 9/4.

The reason is because first of all there is a - 2 outside the brackets. That gets you 18/4. Because you have got a minus 2, you have to compensate the result so that you get 0. The only way to do that is to add 18/4.



3 0
3 years ago
Read 2 more answers
Eduardo says that an increase from 10 to 40 is 300% therefore a decrease from 40 to 10 must be a 300% decrease do you agree with
attashe74 [19]

Answer:

Eduardo's second statement is wrong.

Step-by-step explanation:

Eduardo says that an increase from 10 to 40 is 300% which is true. Because there is an increase by (40 - 10) = 30 and the percent of increase is calculated with respect to 10.  

So, % of increase = \frac{30 \times 100}{10} = 300%.

But when we consider a decrease from 40 to 10, then the decrease is by (40 - 10) = 30, but the percent of decrease will be calculated with respect to 40.

Therefore, the % decrease = \frac{30 \times 100}{40} = 75%.

Hence, Eduardo's second statement is wrong. (Answer)

4 0
3 years ago
In the diagram shown below is it given (known) that FB and EH intersect at A and ZEAG is right. Give
djverab [1.8K]

Answer:

Angle HAB and Angle FAE are congruent angles

Step-by-step explanation:

we know that

Two angles are supplementary if their sum is equal to 180 degrees

In this problem

m∠FAH+m∠HAB=180°  ----> by a linear pair

Remember that

A linear pair of angles is formed when two lines intersect. Two angles are said to be linear if they are adjacent angles formed by two intersecting lines. A linear pair of angles must add up to 180 degrees

m∠FAH+m∠FAE=180°  ----> by a linear pair

therefore

m∠HAB=m∠FAE -----> by vertical angles

Angle HAB and Angle FAE are congruent angles

5 0
3 years ago
Please help 5 more minutes left !
kondor19780726 [428]

Answer:

y = -127/3 + 1.5

Step-by-step explanation:

Slope intercept form should have both slope and y intercept.

Basically, find two points per table.

so x2-x1/y2-y1

100-36.5/0-1.5 = 63.5/-1.5 = -127/3

Now that we have m in 'y=mx+b', we need b

y intercept is where x = 0, or where the line crosses the y intercept.

y = -127/3x + 1.5

8 0
3 years ago
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