PLEASE HELP! How do I solve this problem?

Answers

Answer 1

Answer:
The toughest part of this problem could be deciding what names to give the quantities of one-Euro and two-Euro coins.

-- I called the number of one-Euro coins ' N '.
Each of them is worth 1 Euro, so all ' N ' of them are worth ' N ' Euros.

-- I called the number of two-Euro coins ' T '.
Each of them is worth 2 Euros, so all ' T ' of them are worth ' 2T ' Euros.

-- The total number of coins in Penny's pocket is (N + T), and it says there are 11.

-- Their total value is (N + 2T), and it says the total value is 18.

So now you have two equations, with two unknowns.

   N + 2T = 18
   N + T = 11

Subtract the bottom equation from the top one, and you get:

(N - N) + (2T - T) = (18 - 11)

   T = 7    (there are 7 two-Euro coins in her pocket)

That right there is the answer to the question, so you don't need to go
any farther. But if you wanted to, you could also figure out how many
one-Euro coins there are in her pocket.

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Explain how to do the factor tree for 75

Answers

separate 75 into two numbers. Lets use 15 and 5. 15 can be reduced into 3 and 5, while 5 cannot be reduced. The remaining numbers you have will be 5, 5, and 3.

75
/ \
15 5
/ \
3 5

Like this- . 75 . /. \. . 25. 3 . /. \. . 5. 5. So the factors are- 3x5x5. Hope I helped!

What is x if
-10x - 2 = 18

Answers

Answer:

x = -2

Step-by-step explanation:

To solve -10x - 2 = 18 for x, you have to do the inverse of each operation, but backward. Since the equation subtracted two last, we have to add (since the opposite of subtraction is addition) 2 first. 18 + 2 = 20, so now we have -10x = 20. This is because -2 + 2 cancels out the -2 (it equals 0).

Then, we have to divide both sides of the equation by -10 to get x by itself. Since the equation multiplied by -10, we have to do the opposite of multiplication, which is division. $(-10x)/(-10) = x$ because -10 divided by -10 equals 1 and one multiplied by x is 1x, or just x. Now we have $x = (20)/(-10)$ since we have to do the same thing on both sides. A positive divided by a negative is a negative, and 20 divided by 10 is 2, so our answer is negative 2. Therefore, x = -2.

Pedro works as a newspaper deliverer. He receives a base pay plus an additional amount per newspaper delivered. Last week, Pedro delivered 5 newspapers and earned $37.50. This week, he delivered 20 newspapers and earned $75. Let x equal the number of newspapers Pedro delivers and y be the earnings he receives in dollars. Which linear function models the scenario?

Answers

y=mx+b
x=number of newspapers
37.5 earned for 5 newspapers
37.5=5m+b

earned 75 and deliverd 20 newpapers
75=20m+b

we have

37.5=5m+b and
75=20m+b
multiply first equaiton by -1 and add to other equaiton

-37.5=-5m-b
75=20m+b +
37.5=15m+0b

37.5=15m
divide both sides by 15
2.5=m

sub back to find b
75=2.5(20)+b
75=50+b
minsu 50 both sides
25=b

y=2.5x+25 is lnear funtion

The linearfunction is y=2.5x+25

What is linear function?

A linear function is a function whose graph is a straightline, that is, a polynomial function of degreezero or one.

As, we know equation of line

y=mx + b

x=number of newspapers

37.5=5m+b...............(1)

also,

75=20m+b....................(2)

Solving (1) and (2) , we get

37.5=15m

m=2.5

and, 75=2.5(20)+b

75=50+b

b= 25

Hence, y=2.5x+25 is linear function.

Learn more about this concept here:

brainly.com/question/21107621

#SPJ5

4x - 7 < 5 which is not a solution to the inequality

Answers

First, you want to subtract 7 from both sides. On the left, it cancels out, so you're just left with 4x. On the right, your left with -2. Then, you divide 4 on both sides. On the left, it cancels out, and on the right it leaves you with 0.5. Anything below 0.5 (for ex 0, 0.25) would be correct. Anything above will be incorrect. Hope this helped!

First you want to subtract 7 from both sides. On the left, it cancels out, so you're just left with 4x. On the right, your left with -2. Then, you divide 4 on both sides. On the left, it cancels out, and on the right it leaves you with 0.5. Anything below 0.5 (for ex 0, 0.25) would be correct. Anything above will be incorrect. Hope this helped!!

C(-2,-1), K(8,3) find distance between each pair of points

Answers

D=square root sign (x2-x1)^2+(y2-y1)^2
If u need help plugging the numbers in lmk.

$48 marked down by 20%

Answers

48-20%=48*(1-0.2)=48*.8= 38.4
$38.40

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