MATHEMATICS HIGH SCHOOL

The Smiths are sending out a batch of holiday cards. Emily signed 2/5 of the cards. Then Josh signed 1/9 of the remaining cards. Tatiana signed 20% of what Josh had left. If there were 75 cards in all, how many cards are left to be signed? There are____ cards yet to be signed.

Answers

Answer 1

Answer: There are 32 cards left

Answer 2

Answer:

Answer:

Step-by-step explanation:

start with 75 cards. Emily did 2/5 of the 75 cards = 30 cards (75 divided by 5 times 2)

75-30=45 cards

Josh signed 1/9 which you have to convert to irregular fraction (45 divided by 9 =5) so 45-5=40 left

Of those left Tatiana completed 20% (40*.20=8)

so 40-8=32

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What is 187.2 divided by 8.
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What multiplies to 5 and adds to 6
I need to find how many solutions does the system have.
Pls, help Which of the following is true?|−6| < 5|−6| < |5||−5| < |−6||−5| < −6

You purchase a computer for $875.00 plus 5% sales tax. You decide to finance it through the store's 0% program for 12 months. The terms state that you must pay $100.00/month and that if you miss a payment, you will be assessed a late fee of $39.00 plus the interest accrued to that point at a 14.25% APR. If you miss a payment in the eighth month, how much interest will you be charged?. A. $83.13. B. $16.63. C. $87.28. D. $20.78

Answers

At first you need to know total  cost $(875)(1.05) = 918.75$
According to the fact that you have already paid for 7 months, we have to substract   $700 = 218.75$ ---> what still needs to be payid.
On the 8 moth you have missed the payment so  (218.75)(8/12), and remaining moths are nearly 145.83333
To finish, multiply by the apr and you will get $20.78 interest charged. So, I am pretty sure that he answer is D.

Answer:

87.28

Step-by-step explanation:

i saw the guys above me answer and he got it wrong so it gave me the answer

Define a function. Describe what the vertical line test is used for. Describe a real life situation that can be represented by a function.

Answers

A function is a relationship with a quantity (number). For example, if you made a table, and had one side be 1 2 3 4 5 (X axis) and then the y axis (other side) be 5, 10, 15, 20, 25, the function (rule) would be y= x5. The vertical line test is used to see if a graph has a function or not, so if it creates a vertical line on a graph, it has a function.
A real life situation would be miles per hour, so, for the x axis (hours) it said 1, and for the y axis (miles) it would be 60, this means in a duration of 1 hour you went 60 miles. Well, lets say you went 2 hours driving, the miles would be 120.
For 3 hours, it would be 180. The function here is y= x60!
If you have any questions ask me!

A specific aircraft can ascend 1,635 meters in 15 seconds.
What is the rate of ascent?

Answers

Answer:

109m/s

Step-by-step explanation:

You idiot sandwich

Hey guys, I got positive 2 for this one but there is only -2. PLS help! Solve the equation -25p – 2 = 48 for p. A. -2 B. 1 C. 3 D. 8

Answers

Answer:

p=-2

Step-by-step explanation:

-25p-2=48

Take 2 to the other side which becomes positive

-25p=48+2

-25p=50

Divide both sides by the coefficient of x that is -25

-25p/-25=50/-25

p=-2

Answer:

A. p= -2

Step-by-step explanation:

To solve this equation, we need to find out what p is. In order to do this, we must get p by itself on one side of the equation. Perform the inverse operations to both sides of the equation.

-25p-2=48

2 is being subtracted from -25p. The inverse of subtraction is additon. Add 2 to both sides.

-25p-2+2=48+2

-25p=48+2

-25p=50

p is being multiplied by -25. The inverse of multiplication is division. Divide both sides by -25.

-25p/-25=50/-25

p=50/-25

p=-2

Let's check our solution. Plug -2 in for p in the original equation.

-25p-2=48

-25(-2)-2=48

50-2=48

48=48

Both sides are the same, so we know our solution is correct.

A fountain on a lake sprays water in a parabolic arch modeled by the equation y = −0.4x2 + 3x, where y is the height in feet and x is the horizontal distance. A beam of light is passed through the fountain to create a rainbow effect. If the beam is directed at an angle modeled by the equation -2.2x + 4.9y = 8.18, at what distance from the ground will the beam first touch the water spray?

Answers

Hello,

y=-1.4x²+3x
y=2.2/4.9 x +8.18/4.9

-0.4x²+3x=2.2/4.9 x +8.18/4.9

==>1.96 x² -12.5x +8.18=0
Δ=92.1188....=9.597...²

x=(12.5-9.597...)/(2*1.96)=0.7403433....
=>y=-0.4*0.7403...²+3*0.7403...=2.00178682...

Answer: 2.001... ft

Find each difference. (–6s2 + 12s – 8) – (3s2 + 8s – 6)

Answers

Answer:

-9s2 + 4s -2

Step-by-step explanation:

(–6s2 + 12s – 8) – (3s2 + 8s – 6)=

(-6s2-3s2) +12s-8s -8+6=

-9s2 + 4s -2

Answer:

$-9s^2+4s-2$

Step-by-step explanation:

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