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2 years ago

Answer the 3 questions above (in the picture) please!!!

Mathematics

1 answer:

Karo-lina-s [1.5K]2 years ago

5 0

Answer:

1. X = 17/A --- answer is (A)

2. (6, 0.7) (10, 1.9)

3. $10.99D + $9.99 ≤ $100

Step-by-step explanation:

1. AX + 4AX = 51 + 2AX

5AX = 51 + 2AX .... -2AX both side

3AX = 51 .. divide 3A

X = 17/A --- answer is (A)

2. 10y = 3x -11

(2, 0.5): 3*2 -11 = - 5 10y = 10*0.5 = 5 ..... not correct

(4, 1) 3*4 - 11 = 1 10y = 10*1 = 10 ....... not correct

(6, 0.7) 3*6 - 11 = 7 10y = 10*0.7 = 7 .....Correct

(8,2.3) 3*8 -11 = 13 10y = 10*2.3 =23 ..... not correct

(10, 1.9) 3*10 -11 = 19 10y = 10*1.9 = 19 .... correct

3. 1D cost $10.99

D piece cost: $10.99D

Shipping: $9.99

No more than $100: ≤ 100

D piece DVD + Shipping withtotal no more than $100:

$10.99D + $9.99 ≤ $100

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(100 points) Give a step by step explanation on how you solved this problem

Lina20 [59]

Use substitution
Given both y values, you know that they have to be equal

3x + 3 = x - 1
2x + 3 = -1
2x = -4, divide by 2
x = -2
Now plug x value into any of the equation to find y value
y = 3(-2) + 3
y = -6 + 3, y = -3

Solution: x = -2, y = -3

4 0

3 years ago

Read 2 more answers

SOLUTION: a diver jumps from a diving board that is 24 feet above the water. the height of the diver is given by h= -16(t-1.5)(t

lara [203]

Answer:

The diver will hit the water at 1.5 seconds

Step-by-step explanation:

Given

$h= -16(t-1.5)(t+1)$

Required (Missing from the question)

When will the diver hit the water?

To do this, we simply solve for t

When the diver hits the water, the height is 0 (at that point)

So, substitute 0 for h in $h= -16(t-1.5)(t+1)$

$0= -16(t-1.5)(t+1)$

Divide both sides by -16

$\frac{0}{-16} =\frac{-16(t-1.5)(t+1)}{-16}$

$\frac{0}{-16} =(t-1.5)(t+1)$

$0 =(t-1.5)(t+1)$

$(t-1.5)(t+1)=0$

Split

$t - 1.5 = 0$ or $t + 1 = 0$

Solve for t

$t = 1.5$ or $t = -1$

But time (t) can not be negative.

So:

$t = 1.5$

Hence, the diver will hit the water at 1.5 seconds

8 0

3 years ago

Pls Help me. There is 20 points to anyone who answers this first.

Alexeev081 [22]

bro doesnt it say the correct answer right there??

6 0

3 years ago

Which set represents the same relation as the graph below? A B C D

eimsori [14]

Answer:

B. {( -1,-2 ), ( -3,-2 ), ( -5,4 ), ( 2,0 ), ( 3,3 ), ( 4,5 ), ( 6,-4 )}

Step-by-step explanation:

We are given the graph showing the points of a relation.

According to the graph, we see that, the given points of the relation are:

( -1,-2 ), ( -3,-2 ), ( -5,4 ), ( 2,0 ), ( 3,3 ), ( 4,5 ) and ( 6,-4 ).

As, we see that there are 7 points in the relation.

So, option C and D are not correct as they have 5 and 6 points respectively.

Also, option A is wrong as it contains different set of points.

Hence, we get that option B is correct.

That is the set representing the graphed relation is {( -1,-2 ), ( -3,-2 ), ( -5,4 ), ( 2,0 ), ( 3,3 ), ( 4,5 ), ( 6,-4 )}

8 0

3 years ago

Read 2 more answers

PLEASE HELP ME FAST

Stells [14]

Step-by-step explanation:

answer--A (-2,0)

pls brain list

4 0

2 years ago