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siniylev [52]
3 years ago
9

When the quantity of the sum of 5 times a number and 7 is decreased by 1, the result is 1 more than 6 times the number. What is

the equation that models the verbal description, and what is the number?
A. 5n + 7 – 1 = 6n + 1; n = 5
B. 5n(7 + 1) = 6n + 1; n = 7
C. 7(5n – 1) = 6n – 1; n = 5
D. 5n + 7 – 1 = 6n + 1; n = 31
Mathematics
2 answers:
sineoko [7]3 years ago
6 0
A. 5n + 7 - 1 = 6n + 1. n = 5
Juli2301 [7.4K]3 years ago
5 0

Answer:

a

Step-by-step explanation:

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What fraction is greater than 2/3
lutik1710 [3]

2/3 is basically 0.6666666667 which is the same as 66% so any percentage bigger than 66% such as 75% (0.75) which is 3/4 (as a fraction) is bigger than 2/3

8 0
3 years ago
Caleb bought groceries and paid \$1.60$1.60dollar sign, 1, point, 60 in sales tax. The sales tax rate is 2.5\%2.5%2, point, 5, p
saveliy_v [14]

Answer:

Price of Caleb's groceries before tax = $64

Step-by-step explanation:

Let the price of groceries before tax be =$ x

Sales tax charged = $1.60

Sales tax rate =2.5%

Sales tax charged in terms of x will be = 2.5% of the Original price of grocery =2.5\% of x = 0.025\times x=0.025x

So, we have,

0.025x=1.60

Dividing both sides by 0.025

\frac{0.025x}{0.025}=\frac{1.60}{0.025}

∴ x=64

∴ Price of Caleb's groceries before tax = $64

5 0
4 years ago
Mrs. Adesso wants to take her class on a trip to either the science center or natural history museum. The science center charges
BartSMP [9]

Answer:

  25

Step-by-step explanation:

When we write expressions for the total cost of each field visit and set them equal, we find the solution to be the ratio of the difference in fixed cost to the difference in variable cost.

  y = 75 +7x . . . . . cost for x students to visit the science center

  y = 50 +8x . . . . cost for x students to visit the natural history museum

__

Subtracting the first equation from the second, we get ...

  0 = -25 +x

  25 = x . . . . . add 25; the number of students such that costs are equal

The cost will be the same either place for 25 students.

__

<em>Additional comment</em>

Here, the fixed cost difference is 75-50=25, and the variable cost difference is 8-7=1. The ratio of these costs is ...

  $25/($1 /student) = 25 students.

This relationship only holds when the higher fixed cost is associated with the lower variable cost. Charges are such that one place caters to larger numbers of students (science center), and one prefers fewer students (natural history museum).

4 0
2 years ago
James is earning money to buy a $100 bike. For each dollar James earns, his mom has agreed to give him $1. So far, he has earned
djyliett [7]
14+7=21 21+21=42 100-42=68
6 0
4 years ago
Select the correct answer.
lakkis [162]

Answer:

6x + 4y ≤ 50

x + y ≥ 10

Step-by-step explanation:

$6 is the cost of stuffed animals $4 is the cost of toy trucks and the her maximum budget is $50 it would be 6x+4y is less then or equal to 50 and there is AT LEAST 10 people so the amounts which are x and y would be equal to or greater than 10.

8 0
3 years ago
Read 2 more answers
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