Which of these geometric terms best describes railroad tracks?
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The price of a pair of shoes is $45.90. The sales-tax rate is 5 percent. How much sales tax do you need to pay?a)0.30 b)2.30 c)23 d)48.20
What is 7/24 by 35/38
B. 2.50p ≥ 135; p ≥ 54
C. 2.50p ≥ 135; p ≥ 132.5
D. 135p ≥ 2.50; p ≥ 54
Answers
Answer:
2.50p ≥ 135 , p ≥ 54.
Thus, option (B) is correct.
Step-by-step explanation:
Given: The French club is sponsoring a bake sale and their goal is to raise at least $135.
We have to find the number pastries they must sell at $2.50 each in order to meet the given goal.
Let p be the number of pastries baker sales.
Then cost of p pastries at $2.50 each is 2.50p
and the goal is to raise at least $135 (135 or more than 135)
Thus, inequality becomes,
2.50p ≥ 135
Solving inequality,
Divide both side by 2.50, we have,
Simplify, we have,
p ≥ 54.
Thus, option (B) is correct.
Answer:
B
Step-by-step explanation:
Gradpoint
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A decimal represents a value out of a whole, the "." representing everything under the amount of a whole (1). A percentage is essentially the same thing, except the "%" sign basically replaces the decimal. To convert a percentage to a decimal, move the decimal (and if there isn't one, add one to the right of the last number). Then, move that decimal two places to the right. For every empty space you move, add a zero there.
Answers
Answer:
x = - 7, x = - 1
Step-by-step explanation:
Given
x² + 8x + 7 = 0
Consider the factors of the constant term (+ 7) which sum to give the coefficient of the x- term (+ 8)
The factors are + 7 and + 1 , since
7 × 1 = 7 and 7 + 1 = 8 , then
(x + 7)(x + 1) = 0 ← in factored form
Equate each factor to zero and solve for x
x + 7 = 0 ⇒ x = - 7
x + 1 = 0 ⇒ x = - 1
Answer:
Step-by-step explanation:
where a
0 so a = 1 b = 8 c = 7
Quadratic Formula:
Evaluate the exponent and multiply 4ac
Subtract b^2 - 4ac and multiply 2a
Solve for the sqrt root of 35
x = - 8 ± 6/2 =
x = - 8 + 6/2 = -1
x = - 8 - 6/2 = -7
А=P(1 + Tt)
Answers
Answer:
Option C. r = (27 – P)/3P
Step-by-step explanation:
The following data were obtained from the question:
A = 27
t = 3
r =?
А = P(1 + rt)
With the above formula, we can obtain the value of r as follow
А = P(1 + rt)
27 = P(1 + 3r)
Divide both side by P
27/P = 1 + 3r
Subtract 1 from both side
27/P – 1 = 1 – 1 + 3r
27/P – 1 = 3r
(27 – P)/P = 3r
Divide both side by 3
r = (27 – P)/P ÷ 3
r = (27 – P)/P × 1/3
r = (27 – P)/3P
−5
−7
5
7
Answers
Answer:
-5
Step-by-step explanation:
To Solve x we can use the product rule and multiply 4 in the the brackets:
We can move the fourty to the right hand side of the equal sign and then simplify the equation by dividing the whole expression by 8:
The value of x is -5
8x + 40 = 0
8x = -40
x = -5
a - { a - [ a- (2a - b) + 3a ]}
Answers
= a - {a - (a - 2a + b + 3a)}
= a - {a - (2a + b)}
= a - (a - 2a -b )
= a - (-a - b)
= a + a + b
= 2a + b