MATHEMATICS MIDDLE SCHOOL

HELPPPPPPPP!!!!!!!!!!
HELPPPPPPPP!!!!!!!!!! - 1

Answers

Answer 1
Answer:

Step-by-step explanation:

98 = 188t - 16t^2

-16t^2 + 188t = 98

-16t^2 + 188t - 98 = 0

8t^2 - 94t + 49 = 0

Use the quadratic formula with a = 8 , b = -94 , c = 49 to get the solutions

t = [(47 - root 1817) / 8]≈ 0.55

and

t = [(47 + root 1817) / 8] ≈ 11.20

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Malik stops at the grocery store to buy a bag of diapers and 2 cans of formula. He spends a total of $37. The next week he stops and buys 2 bags of diapers and 5 cans of formula for a total of $87. How much does a bag of diapers cost? How much is one can of formula?
How can you make this into a fraction 0.82
Write and solve a real world problem that can be represented by the expression (-3)(5)+10
Which is true about the degree of the sum and difference of the polynomials 3xy - 2xy4 - 7xy and -8xy + 2x°y4 + xy?O Both the sum and difference have a degree of 6.O Both the sum and difference have a degree of 7.The sum has a degree of 6, but the difference has a degree of 7.The sum has a degree of 7, but the difference has a degree of 6.
Factor the expression 15n - 18

1) 3 - 7 x 5 + 2 x 4=2) 7 - 2 x 5 + 9 x 3=

3) 2 - 8x + 3x When x = 5

4) 4 - 2x + 5x when x= 4

5) z divided 2 - 4z + 3(z-3) when z =8

Answers

1) -24

2) 24

3) -23

4) 16

5) -8/15

Please give me brainliest answer. I need it to level up!

GEMDAS!

1:

3 - 7 x 5 + 2 x 4

3 - 35 + 2 x 4

3 - 35 + 8

3 - 27

-24


2:

7 - 2 x 5 + 9 x 3

7 - 10 + 9 x 3

7 - 10 + 27

7 + 17

24


3:

2 - 8x + 3x When x = 5

2 - 8(5) + 3(5)

2 - 40 + 15

2 - 25

-23


4:

4 - 2x + 5x when x= 4

4 - 2(4) + 5(4)

4 - 8 + 20

4 + 12

16


5:

z ÷ 2 - 4z + 3(z - 3) when z = 8

8 ÷ 2 - 4(8) + 3(8 - 3)

8 ÷ 2 - 32 + 24 - 9

4 - 32 + 24 - 9

4 - 8 - 9

-13


I might've did #5 incorrect.... Really really sorry...

Why is 8(s-3) considered a single term when (s-3) is the difference of two terms?

Answers

When you have 8(s-3) you are find a product of 8 times whatever s-3 is however s-3 you are find the difference between whatever s is and 3.

Find the equation of the line perpendicular to the line y=4x+5, passing through the point (0,-3)

Answers

Answer:

y=-0.25x-3

Step-by-step explanation:

-3=-1/4*0+b

b=-3

720 is 1/10 of what number

Answers

So what you have is do is multiply 720 by the denominator (10) to get 7200.

On a coordinate plane, a solid straight line has a positive slope and goes through (0, negative 1) and (3, 0). Everything above and to the left of the line is shaded.Which linear inequality is represented by the graph?

y ≤ One-thirdx − 1
y ≥ One-thirdx − 1
y < 3x − 1
y > 3x − 1

Answers

Answer:

Option B.

Step-by-step explanation:

A solid straight line passes through (0, -1) and (3, 0)

Slope of the line = (y-y')/(x-x')

= (0+1)/(3-0)

= (1)/(3)

Equation of the line passing through (0, -1) will be  

y - y' = m(x - x')

y+1=(1)/(3)(x-0)

y=(1)/(3)x-1

Since this line is solid then there will the sign of (≥ or ≤)

If everything above and to the left of the line is shaded then the inequality will be

y\geq (1)/(3)x-1

Therefore, the answer will be option B. y\geq (1)/(3)x-1

Answer: C

Step-by-step explanation:

Just took the test and made a 100%

Recipe for cookies calls for 3 1/4 cups of sugar Amy has already put three and one nights cup how many more cups so she need to put in

Answers

Answer:

So she need (5)/(36)\ cups more to put in.

Step-by-step explanation:

Given:

Recipe for cookies calls for 3 1/4 cups of sugar.

Amy has already put three and one nine cups.

Now, to find the number of cups she need to put in.

Number of cups of sugar for recipe calls = 3(1)/(4) =(13)/(4)\ cups.

Amy has already put = 3(1)/(9) =(28)/(9)\ cups.

So, to get the number of cups she need to put in we subtract number of cups of sugar for recipe calls from number of cups of sugar for recipe calls:

(13)/(4) -(28)/(9)

Subtracting by taking the same denominator:

=(117-112)/(36)

=(5)/(36)

Therefore, so she need (5)/(36)\ cups more to put in.
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