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3 years ago

1,Combine the Like Terms: -2x + 7 + 9x - 4

Mathematics

1 answer:

hodyreva [135]3 years ago

3 0

1. 7x+3
2. 8x+19
3. 13x-12
4. 3x-38
5. 6x-1

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Consider an experiment with a deck of 52 playing cards, in which there are 13 cards in each suit, two suits are black, and two s

lakkis [162]

Answer:

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

Number of playing cards = 52

Number of suits = 4

Number of cards per suit = 13

Number of black suits = 2

Number of red suits = 2

2. Suppose E1 = the outcome is a red card and E2 = the outcome is a face card (K, Q, J). Determine P(E1 or E2).

P (E1) = Number of red cards/Total of playing cards

P (E1) = 26/52 = 1/2 = 50%

P (E2) = Number of face cards/Total of playing cards

P (E2) = 12/52 = 3/13 = 23%

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3 years ago

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What can be a segment bisector

Vera_Pavlovna [14]

Answer: A segment bisector, always passes through the midpoint of the segment and divides a segment in two equal parts. Points, lines, segments, and rays are all types of segment bisectors. If either a ray or a line serves as a segment bisector, it will be infinite.

Hello your very welcome :)

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3 years ago

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Suppose the U. S. president wants an estimate of the proportion of the population who support his current policy toward revision

xxMikexx [17]

Answer:

Step-by-step explanation:

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3 years ago

A circle has a radius of 10. An arc in this circle has a central angle of 72 degrees

dmitriy555 [2]

Answer:

the d is 20mm

Step-by-step explanation:

7 0

3 years ago

Will mark brainliest plz help

PtichkaEL [24]

Answer:

A. 5b > 650 + 2.25b; B. 237 brownies

Step-by-step explanation:

A. Set up the inequality

Let b = the number of brownies. Then

Cost = 650 + 2.25b

Sales = 5b

Profit = Sales - Cost

To make a profit, we must have

Sales - Cost > 0 or

5b > 650 + 2.25b

2. Solve the inequality

$\begin{array}{rcl}5b & > & 650 + 2.25b\\2.75b & > & 650\\b & > & \dfrac{650}{2.75}\\\\& > & 236.4\\\end{array}\\\text{Albert can't sell a fraction of a brownie, so b $>$ 237}\\\text{Albert must sell at least $\large \boxed{\textbf{237 brownies}}$ to make a profit.}$

3. Check

$\begin{array}{rcl}5 \times 237 & > & 650 + 2.25 \times 237\\1185 & > & 650 + 533.25\\1185 & > & 1183.25\\\end{array}$

OK.

5 0

4 years ago