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4 years ago

Evaluate x(–y + z) for x = –1, y = 2, and z = 5. 7 –7 –3 3

Mathematics

2 answers:

ICE Princess25 [194]4 years ago

8 0

Just plug in the numbers

-1(-2+5) = -3

Bogdan [553]4 years ago

3 0

-1(-2+5) = -3

hope it helps

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On the average, five smokers pass acertain street corners every ten minutes, what is the probability that during a given 10 minu

sattari [20]

Answer:

The answer will be A. 6 or fewer.

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2 years ago

adoni [48]

Answer:

9 quarters

Step-by-step explanation:

Total cost of money in the coin bank = $3.55

Let the number of dimes be = d

Let the number of quarters be = q

Let the number of nickels be = n

Where:

1 quarter = $0.25

1 dime = $0.1

1 nickel = $0.05

Hence,

0.1(d) + 0.25(q) +0.05(n) = $3.55

In the question, we are told that:

The number of dimes is four less than the number of quarters, mathematically

d = q - 4

The number of nickels is seven more than the number of quarters, mathematically,

n = q + 7

From the question, we are ask to find q

0.1(d) + 0.25(q) +0.05(n) = $3.55

since d = q - 4

n = q + 7

We substitute

0.1(q - 4) +0.25( q )+ 0.05(q + 7) = $3.55

0.1(q - 4) +0.25( q )+ 0.05(q + 7) =$3.55

0.1q - 0.4 +0.25q + 0.05q + 0.35 = $3.55

Collect like terms

0.1q + 0.25q + 0.05q = 3.55 + 0.4 - 0.35

0.4q = 3.6

q = 3.6/0.4

q = 9

Therefore the number of quarters is 9.

6 0

3 years ago

Write an equivalent expression dor 8x + 6 using distributive property

Lostsunrise [7]

The equivalent expression is 2(4x+3)

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3 years ago

What is the amplitude, period, and phase shift of

nasty-shy [4]

Correct answer would be D. hope this helps :)

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3 years ago

While taking a ride in a hot-air balloon in Napa Valley, Francisco wonders how high he is. To find out, he chooses a landmark th

Delicious77 [7]

Answer:the height of the balloon is 670.244 feet

Step-by-step explanation:

The right angle triangle BLD represents the scenario.

h represents the height of the balloon.

We would apply trigonometric ratio to determine h.

Tan # = opposite side/adjacent side

Looking at triangle LCD,

# = 61 degrees

h = opposite side

x = adjacent side

Tan 61 = h/x

1.7321 = h/x

h = 1.7321x

Looking at triangle LBD,

# = 54 degrees

h = opposite side

x + 100 = adjacent side

Tan 54 = h/x + 100

1.3764 = h/x + 100

h = 1.3764(x + 100)

Therefore,

1.7321x = 1.3764(x + 100)

1.7321x = 1.3764x + 137.64

137.64 = 1.7321x - 1.3764x

137.64 = 0.3557x

x = 137.64/0.3557 = 386.955

h = 1.7321x = 386.955 × 1.7321

h = 670.244 feet

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4 years ago