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asambeis [7]
1 year ago
7

Which input in this table is incorrect?Cost ofTax onItem Item1.00.082.00 .163.00 .246.00 .5610.00.80Noter all entries are in dol

larsTotal Costof Item1.082.163.247.5610.80A. 6.00B. 3.00C. 2.00D. 10.00I

Mathematics
1 answer:
Norma-Jean [14]1 year ago
6 0

From the table, we can observe that the formula for the total cost of item is

\text{Total cost of item = Cost of item + Tax on item}

From the data in the table, cost of item 6.00 has the input incorrect because the sum of the cost of its item and tax on the item is,

\text{Total cost of item=6.00+56=6.56}

but the total cost was incorrectly inputed as 7.56.

Hence, the correct option is Option A.

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I need to know the answer
Ainat [17]

Answer:

a) 5

b) 20

c) 28

d) 10

Step-by-step explanation:

a) 7-2=5

b) 2(7)+3(2)

= 14+6

= 20

c) 2(7)(3)= 28

d) (7-2)^2

= (14-4)

= 10

4 0
2 years ago
Read 2 more answers
Hello:) anyone able to explain how to solve the equestrian for part (d) ? Thank youu
Anna007 [38]

Answer:

see explanation

Step-by-step explanation:

Given

4a^{4} - 5a² + 1 = 0

Use the substitution u = a², then equation is

4u²  - 5u + 1 = 0

Consider the product of the coefficient of the u² term and the constant term

product = 4 × 1 = 4 and sum = - 5

The factors are - 4 and - 1

Use these factors to split the u- term

4u² - 4u - u + 1 = 0 ( factor the first/second and third/fourth terms )

4u(u - 1) - 1(u - 1) = 0 ← factor out (u - 1) from each term

(u - 1)(4u - 1) = 0

Equate each factor to zero and solve for u

u - 1 = 0 ⇒ u = 1

4u - 1 = 0 ⇒ 4u = 1 ⇒ u = \frac{1}{4}

Convert u back into terms of a, that is

a² = 1 ⇒ a = ± 1

a² = \frac{1}{4} ⇒ a = ± \frac{1}{2}

Solutions are a = ± 1 , a = ± \frac{1}{2}

7 0
3 years ago
Two cars drive on the same highway in the same direction. The graphs show the distance, , of each one as a function of time, . W
WINSTONCH [101]

Answer:

Car b

Step-by-step explanation: Because it’s going higher on the graph because it’s going more straight than car a which is going more sideways

6 0
3 years ago
Convert the mixed number to an improper fraction. 2 7/10 A.14/10 B.27/10 C.34/10 D.37/10
boyakko [2]
So, to make a mixed number into an improper fraction, you have to multiply the whole number by the denominator and then add the numerator o that number.
2 and 7/10:
2x10=20+7=27/10!
<u>The answer would be B!</u>
I hope this helps!
7 0
3 years ago
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Factor completely. wait for photo
rjkz [21]
Apparently there's no solution?? i tried solving it, and i also used a special calculator, but no solution came up
4 0
2 years ago
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