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satela [25.4K]
3 years ago
15

Bill scored 78, 63, 81, 86, and 74 on the first five math tests. Round each score to the nearest 10 to find an estimate of the t

otal points Bill scored. A. 320 B. 340 C. 360 D. 380\
Mathematics
2 answers:
telo118 [61]3 years ago
4 0

Answer:

D. 380

Step-by-step explanation:

Round all test results to the nearest ten.

78 -> 80

63 -> 60

81 -> 80

86 -> 90

74 -> 70

--

Add the numbers together.

80+60+80+90+70=380

The total points Bill scored is <u>380.</u>

shutvik [7]3 years ago
4 0

Answer:

The answer is D

Step-by-step explanation:

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Evaluate 1/2a^-4b^2 for a=-2 and b=4<br> A) 2<br> B) 1/2<br> C)3<br> D)4
shepuryov [24]

Answer:

The answer to your question is: letter B) 1/2

Step-by-step explanation:

Data

a = -2

b = 4

Equation

(1/2)a⁻⁴b²

Substitution

= (1/2)(-2)⁻⁴(4)²

= (1/2) (1 /2⁴)(4)²

= 1/2 (1/16) (16)

= 16 / 32

= 1 / 2

5 0
3 years ago
a copy of a document that was originallly 24 in by 36 in is now 8 in by 12 in. what scale was used for the reduction
Arte-miy333 [17]

Answer:

Each of the inches was reduced by 3 in.

Step-by-step explanation:

This is the answer because if you divide the 24 by 3 you will get 8 and the same thing occurs if you divide the 36 by 3 and you will get 12

7 0
2 years ago
What is the solution to f(x) = g(x)
Vaselesa [24]

Answer:

B) -1 and D) 1

Step-by-step explanation:

We want to find the solution to

f(x)=g(x)

Which means that we want to find the values of x at which the two functions f(x) and g(x) are equal.

In order to do that, we have to look at the table, and see at which values of x the two functions have the same value.

We observe that the only two values at which this occurs are:

at x=-1, where both functions are equal to f(x)=g(x)=-3

at x=1, where both functions are equal to f(x)=g(x)=5

7 0
3 years ago
A large container holds 5 gallons of water. It begins leaking at a constant rate. After 10 minutes, the container has 3 gallons
valentinak56 [21]
Answer would have to be too the gallon of water would have to be2
8 0
3 years ago
Simplify the expression 5+6i/4+6i<br> A) 56-6i/-20<br> B) -16-6i/-20<br> C)56-6i/52<br> D) -16-6i/52
IRISSAK [1]

Answer:

The\ simplified\ form\ of\ the\ \frac{5 + 6i}{4 + 6i}\ is\ \frac{56-6i}{52}.

Option (C) is correct .

Step-by-step explanation:

As the expression given in the question as follows.

= \frac{5 + 6i}{4 + 6i}

Now rationalize the expression.

= \frac{5 + 6i\times 4 - 6i}{4 + 6i\times 4 - 6i}

Using the formula

a² - b² = (a - b) (a + b)

Using in the above

= \frac{5 + 6i\times 4 - 6i}{(4)^{2} - (6i)^{2}}

= \frac{5\times 4-5\times 6i+6i\times 4-36\ i^{2}}{16 - 36(i)^{2}}

As i² = -1

= \frac{20-30i+24i+36}{16 + 36}

= \frac{56-6i}{52}

Therefore\ the\ simplified\ form\ of\ the\ \frac{5 + 6i}{4 + 6i}\ is\ \frac{56-6i}{52}.

Option (C) is correct .

8 0
2 years ago
Read 2 more answers
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