MATHEMATICS MIDDLE SCHOOL

Rounding these numbers to the nearest 100340
666
985
1902
2771
7540
9999

Answers

Answer 1
Answer: Here this might help you use this method numbers below 5 or higher the number changes all the other numbers 0 but 5 or higher changes them to the next number.
340=300
666=700
985=1000
1902=2000
2771=3000
7540=8000
9999=10000
Answer 2
Answer:

Answer:

rounded to the nearest hundredth

340 = 300

666 = 700

985 = 1,000

1902 = 1,900

2771 = 2,800

7540 = 7,500

9999 = 10,000

Step-by-step explanation:

estimation

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A waffle recipe calls for 2 1/4 cups of flour if Chad wants to make 1 and 1/2 times the recipe how much flour does he need

Answers

3 and 3/8 cups of flour

Is 87 Prime or Composite

Answers

87 is Composite, not prime

87 :1,3,29,87 

Prime numbers have exactly two factors: 1 and itself. 
Composites have more than two factors.

Meghan counted the candies she had in a jar. She discovered that half of the candies were red. If she had 50 red candies, in which equation does x represent the total number candies in the jar?

Answers

50x2=x

50 represents the red candies.

2 represents the other half of candies.

x represents the total amount of candies.

Hope this helps!

-2(10r + 4) + 10(7r + 2)

Answers

Answer:

\large\boxed{-2(10r+4)+10(7r+2)=50r+12}

Step-by-step explanation:

-2(10r+4)+10(7r+2)\qquad\text{use the distributive property}\ a(b+c)=ab+ac\n\n=(-2)(10r)+(-2)(4)+(10)(7r)+(10)(2)\n\n=-20r-8+70r+20\qquad\text{combine like terms}\n\n=(-20r+70r)+(-8+20)\n\n=50r+12
The answer would be 50r+12

-2(10r+4)+10(7r+2)

Remove parentheses

-20r-8+70r+20

Collect like terms

50r+12

Sketch the quadratic function f(x) = x2 + 4x + 3. Which key feature of the graph is given incorrectly?A) minimum (-2, -1)
B) y-intercept (0, 2)
Eliminate
C) x-intercept (-3, 0)
D) x-intercept (-1, 0)

Answers

Answer:

B

Step-by-step explanation:

x-intercepts:

factor the function

f(x)=(x+3)(x+1)

zeros at x=-3,-1

x-intercepts  --> (-3,0),(-1,0)

y-intercepts:

set x=0 in f(x)

f(0)=(0)^2+4(0)+3=3

y-intercept  --> (0,3)

find minimums and maximums

The max or min of a quadratic function occurs at x=-b/(2a). If a is negative, the max value of the function is f(-b/(2a)).  if a is positive, the minimum value of the function is f(-b/(2a)).

f(x)=ax^2+bx+c

f(x)=x^2+4x+3

here a is positive so you are looking for a minimum,

x=-b/(2a)

x=-4/(2*1)

x=-2   ----> plug into f(x), f(-2)=(-2)^2+4(-2)+3=-1

minimum (-2,-1)

Answer:B

Step-by-step explanation:

List the partial products of 35 times 7

Answers

30 x 7 = 210 
5 x 7 = 35

However, if 5 x 7 = 35, 35 will be the product.
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