MATHEMATICS MIDDLE SCHOOL

What is 3+0.5(4a+8)=9-2a is your solving for (a).

Answers

Answer 1

Answer:

Answer:

$a = 1/2$

Step-by-step explanation:

Step 1: Distribute

$3 + 0.5(4a + 8) = 9 - 2a$

$3 + (0.5 * 4a) + (0.5 * 8) = 9 - 2a$

$3 + 2a + 4 = 9 - 2a$

Step 2: Combine like terms

$(3 + 4) + 2a = 9 - 2a$

$7 + 2a = 9 - 2a$

Step 3: Subtract 7 from both sides

$7 + 2a - 7 = 9 - 2a - 7$

$2a = 2 - 2a$

Step 4: Add 2a to both sides

$2a + 2a = 2 - 2a + 2a$

$4a = 2$

Step 5: Divide both sides by 4

$4a / 4 = 2 / 4$

$a = 1/2$

Answer: $a = 1/2$

Answer 2

Answer:

Answer:

It is 1/2

Step-by-step explanation:

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3/11 as a decimal using long division
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2. Simplify -6x - (-9x+4)
What is 12 divided by one third
the base of a regular pyramid is a hexagon whose perimeter is 84 feet. the volume of the pyramid is approximately 4,677.85 cubic feet. find the height of the pyramid.

A person invests 7500 dollars in a bank. The bank pays 6% interest compounded semi-annually. To the nearest tenth of a year, how long must the person leave the money in the bank until it reaches 16200 dollars?

Answers

Answer:

$13.0\ years$

Step-by-step explanation:

we know that

The compound interest formula is equal to

$A=P(1+(r)/(n))^(nt)$

where

A is the Final Investment Value

P is the Principal amount of money to be invested

r is the rate of interest in decimal

t is Number of Time Periods

n is the number of times interest is compounded per year

in this problem we have

$t=?\ years\n P=\$7,500\n r=0.06\nn=2\n A=\$16,200$

substitute in the formula above

$16,200=7,500(1+(0.06)/(2))^(2t)$

$(2.16)=(1.03)^(2t)$

Apply log both sides

$log(2.16)=(2t)log(1.03)$

$t=log(2.16)/[(2)log(1.03)]$

$t=13.0\ years$

PLEAS EHELP I BEG YOU!!!!!

Answers

X^a+bm
3rd answer
Parenthesis means b x m
a is not right next to b so you add that to b x m

x^a(x^b)^m = x^(a+bm)

When multiplying numbers, the base (x) must be the same. Add the exponents. When raising (x^b)^m, multiply exponents.

Examples: x²x³ = x^5.
x²(x³)² = x²x³x³ = x^8 [2x(3x2)]

In the second equation, division of exponents means to subtract. The big clue is 8/4 = 2, so any correct answer must be preceded by 2.

5-4 = 1, and x^1 = x. So: 2x

Harry is at a Pizza Hut and he sees that 5 pizzas cost $300.He needs 15 pizzas.How much does 15 pizzas cost.

Answers

If 5 pizzas cost $300, 5 x 3 = 15, so $300 x 3 = $900

Dawn bought 12 grams of chocolate. she ate half of the chocolate. How many grams of chocolate did she eat?

Answers

Dawn ate 6 grams of chocolate.

What is Division method?

Division method is used to distributing a group of things into equal parts. Division is just opposite of multiplications. For example, dividing 20 by 2 means splitting 20 into 2 equal groups of 10.

Given that;

Dawn bought 12 grams of chocolate.

Here, She ate half of the chocolate.

Hence, The amount of eat chocolate = 12 / 2 grams

= 6 grams

Learn more about the divide visit:

brainly.com/question/28119824

#SPJ2

6 grams. you just divide it in half.

I have a few problems on combining like terms please help:1)   12r-8-12
2)      n-10+9n-3
3)    -4x-10x
4) -r-10r

Answers

Combing like terms is actually pretty simple. As long as you can do basic addition, multiplication, division, and subtraction, you should be fine. Like terms are two or more terms that have the same variable(s) -- sometimes like terms can be two or more regular numbers without variables as well. When combing like terms without a variable, just perform the operation as normal (i.e. 2 + 5 = 7). When combing like terms with a variable, perform the operation on the coefficients (i.e. 10x + 5x = (10+5)x = 15x).

1) 12r - 8 - 12
Here the like terms are -8 and 12.
-8 - 12 = -20
12r - 20

2) n - 10 + 9n - 3
Here the like terms are n and 9n and -10 and -3.
To make it easier you can reorder the expression to be n + 9n - 10 - 3.
n + 9n = (1 + 9)n = 10n
-10 - 3 = -13
10n - 13

3) -4x - 10x
Here the like terms are the only two terms in the expression, -4x and -10x.
(-4 - 10)x = -14x
-14x

4) -r - 10r
Here the like terms are the only two terms in the expression, -r and -10r.
(-1 - 10)r = -11
-11r

$12r-20\n 10n-13\n -14x\n -11r$

Please help me thank you

Answers

up the ramp because the ramp has a steeper angle than the hill...

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