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GuDViN [60]
3 years ago
9

1. Jackson has 75¢ in dimes, d, and nickels, n, in his pocket. Which equation could be solved to find the possible combinations

of dimes and nickels Jackson has?
A. 75 = d + n B. 75 = dn C. 75 = 10d ·5n D. 75 = 10d + 5n

The linear equation below has two variables. PLEASE HELP ME!
y = (-1/4)x – 1

Which shows the solutions to the equation when x = 4, x = 0, and x = -4?

A. (-2, 4), (1, 0), (0, -4) C. (2, -4), (-1, 0), (0, 4)
B. (4, -2), (0, -1), (-4, 0) D. (-4, 2), (0, 1), (4, 0)

A 50-foot roll of fencing will be used to enclose a rectangular garden. Which equation below could not be solved to find the possible lengths, l, and widths, w, of the garden?

A. 50 = 2lw C. 2(l + w) = 50
B. 50/2 = l + w D. 50 = 2l + 2w


4. Ms. Monti bought x adult tickets and y children’s tickets to an ice-skating show. She spent a total of $145. The equation below describes the relationship between x and y.

25x + 15y = 145

The ordered pair (4, 3) is a solution of the equation. What does the solution (4, 3) represent?

A. Ms. Monti bought 4 adult tickets and 3 children’s tickets.
B. Adult tickets cost $4 each and children’s tickets cost $3 each.
C. Ms. Monti spent $4 on adult tickets and $3 on children’s tickets.
D. The cost of 4 adult tickets equals the cost of 3 children’s tickets.


The growth of a kitten is described by the equation y = 2.5x + 4, where y represents the kitten’s weight in ounces x weeks after it was born. What is the meaning of the fact that the point (4, 14) lies on the graph of the equation?

A. The kitten had an initial weight of 4 ounces.
B. The kitten is growing at a rate of 4 ounces per week.
C. The kitten weighed 4 ounces when it was 14 weeks old.
D. The kitten weighed 14 ounces when it was 4 weeks old.
Mathematics
1 answer:
SpyIntel [72]3 years ago
8 0

Answer:

Part 1) Option D 75=10d+5n

Part 2) Option B (4, -2), (0, -1), (-4, 0)

Part 3) Option A 50=2LW

Part 4) Option A Ms. Monti bought 4 adult tickets and 3 children’s tickets

Part 5) Option D The kitten weighed 14 ounces when it was 4 weeks old

Step-by-step explanation:

Part 1)

we know that

1\ dime=\$0.10

1\ nickel=\$0.05

Let

d-------> the number of dimes

n-----> the number of nickels

so

0.10d+0.05n=0.75

Multiply by 100 both sides

10d+5n=75

Part 2)

we have

y=(-\frac{1}{4})x-1

To calculate the solutions of the equation for an x value, substitute the value of x in the equation and find the value of y

For x=4 -----> y=(-\frac{1}{4})(4)-1=-2 ----> (4,-2)

For x=0 -----> y=(-\frac{1}{4})(0)-1=-1 ----> (0,-1)

For x=-4 -----> y=(-\frac{1}{-4})(4)-1=0 ----> (-4,0)

Part 3)

we know that

The perimeter of a rectangle is equal to

P=2(L+W)

we have

P=50\ ft

substitute

50=2(L+W) ------> 50/2=(L+W) -----> 50=2L+2W

Par 4)

Let

x------> the number of adult tickets

y------> the number of children tickets

we have

25x + 15y = 145

The ordered pair (4,3) represent

x=4\ adult\ tickets

y=3\ children\ tickets

therefore

Ms. Monti bought 4 adult tickets and 3 children’s tickets

Part 5)  

Let

x------> the number of weeks after it was born

y-----> the kitten’s weight in ounces

we have

y=2.5x+4  

The ordered pair (4,14) represent

x=4\ weeks

y=14\ ounces

therefore

The kitten weighed 14 ounces when it was 4 weeks old


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2 years ago
BRAINLIEST IF RIGHT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Trevon's Custom Kitchen Supplies sells handmade forks an
AURORKA [14]

Answer:

D. 9 forks and 6 spoons

Step-by-step explanation:

Let's calculate how many forks and spoons were made.  We need to guess a pair of variable values that will add up to $24.60.  We'll do this by substituting all the possible pairs in:

Here's the pair for A:

[($1.80 * a) + ($1.40 * b)]

= [($1.80 * 8) + ($1.40 * 10)]

= [$14.40 + $14]

= $28.40

Is $28.40 equal to $24.60? No, this is not correct.

Here's the pair for B:

[($1.80 * a) + ($1.40 * b)]

= [($1.80 * 8) + ($1.40 * 8)]

= [$14.40 + $10.80]

= $25.20

Is $25.20 equal to $24.60? No, this is not correct.

Here's the pair for C:

[($1.80 * a) + ($1.40 * b)]

= [($1.80 * 9) + ($1.40 * 9)]

= [$16.20 + $12.60]

= $28.80

Is $28.80 equal to $24.60? No, this is not correct.

Here's the pair for D:

[($1.80 * a) + ($1.40 * b)]

= [($1.80 * 9) + ($1.40 * 6)]

= [$16.20 + $8.40]

= $24.60

Is $24.60 equal to $24.60? Yes, this is correct.

Therefore, we know the answer is (D) 9 forks and 6 spoons

We can also check by substituting these values to find the amount Trevon's Custom Kitchen Supplies earned last April:

[($4.60 * a) + ($5.40 * b)]

= [($4.60 * 9) + ($5.40 * 6)]

= [$41.40 + $32.40]

= $73.80

This is equal to the amount of money earned last April.

I hope this helps! Tell me if I'm wrong, please!

4 0
3 years ago
Giovanni spent a total of $13.75 bowling. He rented bowling shoes for $2.50 and bowled 3 games. Each game cost the same amount.
irina [24]
It’s $13.75=3x-$2.50 -> $11.25=3x -> $3.75=x
X=g
7 0
2 years ago
18. What is the value of 4k + 6(j – 2) when k = 3<br> and j = 5?
Alexxx [7]

Answer:

30

Step-by-step explanation:

you plug in k with 3 and j with 5

4 times 3 + 6(5 – 2) = 30

6 0
2 years ago
?????????????????????????????????????????
Gwar [14]

Answer: b

Step-by-step explanation:

7 0
2 years ago
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