MATHEMATICS MIDDLE SCHOOL

If a = 1/2, b = -3, and c = 1, evaluate 4a^2+2b(c-3).

Answers

Answer 1

Answer:

Answer:

$13$

Step-by-step explanation:

Step 1: Set a to 1/2, b to -3 and c to 1

$4a^2 + 2b(c - 3)$

$4(1/2)^2 + 2(-3)((1) - 3)\n$

$4(1/4) - 6(-2)$

$1 + 12$

$13$

Answer: $13$

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Answers

Answer:

Step-by-step explanation:

What is the solution set for x2+12x=-11

Answers

Answer:

Step-by-step explanation:

x^2 + 12x = -11

x^2 + 12x + 11 = 0

(x + 1)(x + 11) = 0

x + 1 = 0 x + 11 = 0

x = -1 x = -11

x = -1, x = -11

How many ounces go into 21 grams?

Answers

in one ounce there are 28.3495 grams
rounded 28.25 grams
so in 21 grams there are 0.7407532009 ounces
rounded to 3/4 = .75
there are 3/4 of an ounce in 21 grams

28.25 g per ounce

21 grams divided by 28.25

answer= 0.74

Seven pounds of grapes cost 10.43. How much would 3 pounds cost?

Answers

To answer this we will find the unit rate by dividing. Lets do it:-

10.43 ÷ 7 = 1.49
1 pound of grapes = $1.49

CHECK OUR WORK:-

1.49 × 7 = 10.43
we were RIGHT!!!

Now lets multiply to see how much 3 pounds would cost.

1.49 × 3 = 4.47

CHECK OUR WORK:-

4.47 ÷ 3 = 1.49
We were RIGHT!!

So, 3 pounds of grapes cost $4.47.

Hope i helped ya!!

3 pounds of grapes will cost $4.47.

Jimmy Bullard and his friend went for fishing.They got six fishes without heads, nine fishes without the tail and eight fishes cut in two halves.

How many fishes did they caught ?

Answers

They caught 19 fishes

Harry just moved into his new house he had 318 boxes to unpack he unpacked 2/6 of the boxes in the first week he unpacked 1/2 of the boxes in the second week how many boxes did he have left to unpack the third week

Answers

so

2/6 of 318=106

so 106-1/2 or 106/2=53

So he has 53 boxes left

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