MATHEMATICS MIDDLE SCHOOL

8(1/4)-1+0.5(10)
please help meeeeeee

Answers

Answer 1
Answer:

Answer:

6

Step-by-step explanation:

8(1/4) is 2 bc 1/4 of 8 is 2

2-1=.5(10)

.5 works like 1/2 so 1/2 is 10 is 5

then you get 2-1+5 then after that you get 6

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76.11 Multiply fractions and mixed numbers: word problems 5N)Sean had 1/3 of a pound of blueberries. Sean let his friend Kendra eat 3/4 of the blueberries
How many pounds of blueberries did Kendra eat?

Answers

Answer:

Kendra ate 1/4 pounds of blueberries.

Step-by-step explanation:

The amount of blueberries Sean had  =  1/3 pound

The amount of blueberries Kendra ate  = 3/4 of Total available

= 3/4 of (1/3 pounds)

Now, we need to find out the 3/4 amount of 1/3 pound.

3/4 of 1/3 pound  = (3)/(4)  * (1)/(3)   = (1)/(4 )

⇒ 3/4 of the amount 1/3 pound  = 1/4 pound

Hence Kendra ate 1/4 pounds of blueberries.

1)What are the first four terms of the sequence represented by the expression n(n-1)-5

Answers

a_n=n(n-1)-5 \n \na_1=1(1-1)-5=1 * 0-5=0-5=-5 \na_2=2(2-1)-5=2 * 1-5=2-5=-3 \na_3=3(3-1)-5=3 * 2-5=6-5=1 \na_4=4(4-1)-5=4 * 3-5=12-5=7

The first four terms are -5, -3, 1 and 7.

The ratio of two numbers is 7 to 5. The sum of the numbers is 24. What are the numbers?12 and 12

 

14 and 10

 

21 and 15

 

18 and 6

Answers

Answer:

14 and 10

Step-by-step explanation:

The ratio of the 2 numbers = 7x : 5x

The sum of the 2 numbers is 24, hence

7x + 5x = 24

12x = 24 ( divide both sides by 12 )

x = 2

7x = 7 × 2 = 14

5x = 5 × 2 = 10

Thus the numbers are 14 and 10

John needs to make a scale drawing of his school building for art class. If the building is 256.25 meters long, and John scales it down using a ratio of 25 meters to 1 inch, how long will the building be in the sketch?My question is what do I start with first. Divide, multiply. and what numbers. My math is on line and I have not worked math problems in 30 years

Answers

Each 25 meter will be represented by a segment of 1 inch length. So for example a length of 250 meters, is drawn as 10 in on paper.

So first we need to know how many 25 meters are there in 256.25 meters, so we need to divide 256.25 meters by 25 meters which is 10.25.

This means we will draw 10.25 in.

What is the product written in scientific notation?(2.6 × 10^–4)(2.2 × 10^8)



A.


5.72 × 10^4


B.


5.72 × 10^–32


C.


4.8 × 10^4


D.


4.8 × 10^–2

Answers

(2.6*x^(-4))*(2.2*x^(8)) = (2.6*2.2)*(x^(-4) * x^(8))=(5.72)*(x^(-4+8))= \n =5.72*x^(4)

What is Algebraic Expression?

Answers

An algebraic expression contains numbers and variables and also operators (adding, subtracting, multiplying, and dividing)

Here are a few examples:

a+3, b-6, c/5, 7d, etc.

Explanation: Algebraic expression is a mathematical expression that consists of variables, numbers, and operations.

8: ← Variable

(x): ← Operation

5: ← Constant

Example:  x+12

The variable in the expression is x.

The operation in the expression is +.

The constant in the expression is 12.

Hope this helps!

Thanks!

Have a great day!
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