MATHEMATICS MIDDLE SCHOOL

Can someone help me?

Answers

Answer 1

Answer:

-3 - 1 = -4; -3 + 1 = -2

44 - 1 = 43; 44 + 1 = 45

-97 - 1 = -98; -97 + 1 = -96

-78 - 1 = -79; -78 + 1 = -77

56 - 1 = 55; 56 + 1 = 57

95 - 1 = 94; 95 + 1 = 96

50 - 1 = 49; 50 + 1 = 51

8 - 1 = 7; 8 + 1 = 9

36 - 1 = 35; 36 + 1 = 37

-89 - 1 = -90; -89 + 1 = -88

-83 - 1 = -84; -83 + 1 = -82

-37 - 1 = -38; -37 + 1 = -36

-14 - 1 = -15; -14 + 1 = -13

86 - 1 = 85; 86 + 1 = 87

2 - 1 = 1; 2 + 1 = 3

-18 - 1 = -19; -18 + 1 = -17

6 - 1 = 5; 6 + 1 = 7

76 - 1 = 75; 76 + 1 = 77

96 - 1 = 95; 96 + 1 = 97

84 - 1 = 83; 84 + 1 = 83

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Notebooks cost $1.20 each. This weekend they will be on sale for $0.80. What percentage is the sale?
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a jet airliner flies 4,100 km from New York City to San Francisco in 4.25 h. What is its average speed?
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A bag contains 2 white marbles and 7 purple marbles. Two marbles are drawn at random. One marble is drawn and not replaced, then a second marble is drawnA. What is the probability of selecting a purple marble and then a white marble?
B. What is the probability of selecting 2 white marbles?
C. Is there a greater chance of selecting 2 white marbles in a row or 2 purple marbles in a row? Show your work!

Hallie is trying to win the grand prize on a game show. Should she try her luck by spinning a wheel with 6 equal sections labeled from 1 to 6 and hope she gets a 5, or should she roll two number cubes and hope she gets the same number on both cubes. Show your work?

Answers

A. likely

B. unlikely

C. There is a greater chance in picking to purple marbles because there are less of the white and more purple.

Hallie should spin the wheel because u have a greater chance of landing on a 5 then rolling two number cubes and hoping both number cubes come to equal 5.

two white marbles: probability first is white is \frac{2}{9} probability second is white given that the first is white is \frac{1}{8} again probability both happen is \frac{2}{9}\times \frac{1}{8}

Hope this helps.

Write 57.6% as a fraction in simplest form?

Answers

The simplest form of the 57.6% as a fraction is 72 / 125.

What is a fraction?

A fraction is a numeral that represents a rational number.

Let a and b be two numbers, then their fraction can be represented as a/b.

The given percent value is 57.6 %.

The fraction value of 57.6% can be written as

= 57.6 / 100

= 576 / 1000

= 72 / 125

The simplest form of the 57.6% as a fraction is 72 / 125.

To know more about Fraction on:

brainly.com/question/10708469

#SPJ5

57.6% = 57.6/100 = 576/1000

$(576)/(1000) =(72*8)/(125* 8) =\boxed{\bf{(72)/(125)}}$

Karina rows a boat downstream for 66 miles. The return trip upstream took 16 hours longer. If the current flows at 4 mph, how fast does Karina row in still water?

Answers

Answer:

7 mph

Step-by-step explanation:

Let x be the speed in still water hence

Time to move downstream will be $\frac {66}{x+4}$

Time to move upstream will be $\frac {66}{x-4}$

Difference will be

$\frac {66}{x-4}-\frac {66}{x+4}=16$

$66(x+4)-66(x-4)= 16(x^(2)-16)$

$66x+264-66x+264=16x^(2)-256$

$16x^(2)-256-528=0$

$x^(2)-16-33=0$

$x^(2)=49$

x=7

What is the factor form of x^2-9x+14

Answers

$x^2-9x+14 =x^2-2x-7x+14=x(x-2)-7(x-2)=(x-7)(x-2)$

Answer:

(x - 7)(x - 2)

Step-by-step explanation:

Consider the factors of the constant term (+ 14) which sum to give the coefficient of the x- term (- 9)

The factors are - 7 and - 2, since

- 7 × - 2 = + 14 and - 7 - 2 = - 9, hence

x² - 9x + 14 = (x - 7)(x - 2) ← in factored form

Question 4 (1 point)AT&T has a cell phone that is 20% off the original price of $129. How much is the discount (in dollars)?
Blank 1:

Answers

Answer: $25.80

Step-by-step explanation:

the discount would be $25.80

Please help I only have today to do this type of work and I'm struggling!! Alice, Raul, and Maria are baking cookies together. They need cup of flour and cup of butter to make a dozen cookies. They each brought the ingredients they had at home. Alice brought cups of flour and cup of butter, Raul brought cup of flour and cup of butter, and Maria brought cups of flour and cup of butter. If the students have plenty of the other ingredients they need (sugar, salt, baking soda, etc.), how many whole batches of a dozen cookies can they make?

Answers

Answer is In the Picture

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