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Lana71 [14]
3 years ago
9

Determine which consecutive integers do not have a real zero of between them. a. (–6, –5) c. (–2, –1) b. (–5, –4) d. (1, 2) Plea

se select the best answer from the choices provided A B C D
Mathematics
1 answer:
svetoff [14.1K]3 years ago
7 0
We have by the intermediate value theorem that if a continuous function takes values both above and below zero at 2 points, there is a zero of the function in-between. We have that polynomials are continues. Let's calculate f(-6) and f(-5). f(-6)=-36 while f(-5)=-1. Thus, we cannot conclude that there is a root between them.
F(-2)=8, f(-1)=-1, so there is a flip; a zero must exist between them.
F(1)=-1, f(2)=20, so again there is a change of signs.
f(-5)=-1, f(-4)=14 so there is a root still.
We have that the only choice that does not have a root between the integers is choice a.

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Solve (x + 9)2 = 25. Apply the square root property of equality: Isolate the variable. StartRoot (x + 9) squared EndRoot = Plus
Licemer1 [7]

Answer:1

Step-by-step explanation: I dont know

4 0
3 years ago
Read 2 more answers
A transaction is positive if there is a sale and negative when there is a return. Each time a customer uses credit card for a tr
anastassius [24]

Full question:

A transaction is positive if there is a sale and negative when there is a return. Each time a customer uses credit card for a transaction, the credit company charges Isabel. The credit company charges 1.5% of each sale and a fee of 0.5 % for returns

Let x represent the amount of a transaction and let f(x) represent the amount Isabel is charged for the transaction. Write a function that expresses f(x)

Answer:

f(x)= 0.015(x)

f(x)= 0.005(x)

Explanation:

If Isabel makes a sale, she has a positive transaction and therefore is charged 1.5%(which is 0.015) by the credit company for the transaction. If the product is returned, it is a negative transaction and the credit company charges 0.5%(which is 0.005) for the transaction. The functions for positive and negative transactions would be different as indicated in the answer since transactions( given by x) are different- positive and negative.

4 0
3 years ago
Find the product of (5t-3) and (3t +7) when t = 6
emmasim [6.3K]

Answer:

675

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Step-by-step explanation:

<u>Step 1: Define</u>

(5t - 3) · (3t + 7)

t = 6

<u>Step 2: Evaluate</u>

  1. Substitute in <em>t</em>:                    (5(6) - 3) · (3(6) + 7)
  2. (Parenthesis) Multiply:       (30 - 3) · (18 + 7)
  3. (Parenthesis) Subtract:      27 · (18 + 7)
  4. (Parenthesis) Add:             27 · 25
  5. Multiply:                              675
8 0
3 years ago
Read 2 more answers
A lasagna recipe uses 1 2/4 teaspoon basil 1/4 teaspoon pepper and 4 teaspoons parsley if you double the recipe how many teaspoo
Nimfa-mama [501]

Answer:

11 1/2 teaspoons

Step-by-step explanation:

1 2/4 basil= 1.5 tsp If you multiply this by two to double the recipe you will have 3 teaspoons of basil.

1/4*2= 2/4 pepper

4*2=8 parsley

After you double everything you need to add them together:

3+2/4+8

Which brings you to the final answer of 11 2/4 teaspoons or if you simplify it.... 11 1/2 teaspoons

6 0
3 years ago
A limo is rented at a fixed cost for an evening. It is rented by 12 people, the average cost for each person will be $2 less tha
kari74 [83]

Answer:

$120

Step-by-step explanation:

According to the information in the statement and taking into account that the price for renting the limo is fixed, you can say that the cost of renting the limo for 12 people is equal to the cost of renting it for ten. Then, the cost for 12 people is 12 for the cost per person which is equal to 10 for the cost per person and you can express it as follow:

x is the cost per person when the limo is rented by 10 people.

12*(x-2)=10*x

You can solve for x:

12x-24=10x

12x-10x=24

2x=24

x=24/2

x=12

Now that you have the cost per person when the limo is rented by 10 people, you can multiply this value for 10 to find the cost of renting the limo for the evening:

12*10=120

The answer is that the limo cost $120 for the evening.

4 0
3 years ago
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