Answer:
The values are 9 and 8
Step-by-step explanation:
Let the first number be x
Let the second number be y
The sum of x and y is x+y=17
The difference of x and y is x-y=1
x+y=17 (this is equation 1)
x-y=1 (this is equation 2)
Now we will add equation 1 and equation 2.
x+y = 17
x-y = 1
______
2x =18
x= 18/2
x= 9
Now put the value of x in equation 1.
x+y = 17
9+y = 17
y = 17-9
y = 8
Solution Set ={(x,y)(9,8)}
Answer:
$3.90
Step-by-step explanation:
The total cost was $24.40.
We know the cost for beads for each necklace is also $2.20, multiply this by four to find the cost of the beads for all the necklaces.
$2.20 × 4 = $8.80
Now we will subtract this from the total price.
$24.40 - $8.80 = $15.60
$15.60 Is the remaining cost for the pendants of all four necklaces. We will now divide this by four to find the price of a single pendant.
$15.60 ÷ 4 = $3.90
<u>This means the cost of each pendant is $3.90</u>
Because he needs less than (note that he didn't say he needs no more than) 6 pounds, first inequality is C) x+y<6
Now in inequalities that have 7 and 5 in them, 7 represents the cost of first ingredient and 5 the cost of second ingredient. If we multiply each of that number with quantity of that ingredient and sum both up we get the price of the mixture.
Because he says that he wants that mixture costs no more than 30 that means that it costs less than 30 but 30 can be the answer as well.
The last answer is E) 7x + 5y
Answer:
<u>114</u>
<u>Steps listed below</u>
Set up the proportion:
<u>36</u> <u> x </u>
120 380
Cross Multiply to get:
120x and 13680
Divide each side by 120:
<u>120x</u> <u>13680</u>
120 120
Answer:
<u>x=114</u>
Answer: the z score is - 5.33
Step-by-step explanation:
Since the results for the standardized test are normally distributed, we would apply the formula for normal distribution which is expressed as
z = (x - µ)/σ
Where
x = test reults
µ = mean score
σ = standard deviation
From the information given,
µ = 1700 points
σ = 75 points
We want to the Z-score test result of 1300 points.
For x = 1300,
z = (1300 - 1700)/75 = - 400/75 =
- 5.33