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Contact [7]
4 years ago
5

3x into 4x minus 5 plus 3 if x is equal to 1/2

Mathematics
1 answer:
Solnce55 [7]4 years ago
8 0

Answer: 8 3/4

Step-by-step explanation:

3x(4x-5+3); where x is 1/2

Substitute the value 1/2 with x

3 1/2 (4 1/2 - 5+3)

7/2 (9/2 -2)

7/2 (5/2)

35/4 = 8 3/4

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A gardener is planting two types of trees:
denpristay [2]

It takes 12 years for both trees to be of same height

<em><u>Solution:</u></em>

Assume the year that it would take to these trees have the same height is : x (years)

<em><u>Type A is 7 feet tall and grows at a rate of 23 inches per year:</u></em>

Convert 7 feet to inches

We know that,

1 foot = 12 inch

7 feet = 12 x 7 inch = 84 inch

Thus, type A is 84 inches tall and grows at a rate of 23 inches per year

We can frame a equation as:

Type A = 84 + 23(number of years)

Type A = 84 + 23x ---------- eqn 1

<em><u>Type B is 5 feet tall and grows at a rate of 25 inches per year</u></em>

Convert 5 feet to inches

5 feet = 5 x 12 inches = 60 inches

Thus, type B is 60 inches tall and grows at a rate of 25 inches per year

We can frame a equation as:

Type B = 60 + 25(number of years)

Type B = 60 + 25x --------- eqn 2

For both the trees to be of same height, eqn 1 must be equal to eqn 2

84 + 23x = 60 + 25x

25x - 23x = 84 - 60

2x = 24

x = 12

Thus it takes 12 years for both trees to be of same height

7 0
4 years ago
Round 6.512459 to the nearest ten thousandths?
PtichkaEL [24]
6.512459\\\\Since\ the\ fifth\ place\ (hundred\ thousandths)\ is\ 5\ or\ more\ (it's\ 5),\\the\ fourth\ place\ (ten\ thousandths)\ is\ increased\ by\ 1.\\\\Answer:6.512459\approx6.5125
4 0
3 years ago
IF you add 6 tens of thousands, 5 thousands and 3 hundreds together what is the value of the largest digit of the answer?
victus00 [196]

Answer:

ten thousands place

Step-by-step explanation:

6 tens of thousands = 60,000

5 thousands= 5,000

3 hundreds= 300

60,000

+  5,000

<u>+      300</u>

 <u>6</u>5,300

5 0
3 years ago
PLEASE ANSWER ASASP FOR BRAINLEST!!!!!!!!!!!!!!!!!!!!!
Zinaida [17]
Answer: 8-n>_10 letter A
3 0
3 years ago
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When you write a numerical expression, how can ypu show which operation to do first?
Scrat [10]

Answer:

using PEMDAS

Step-by-step explanation:

P   parenthesis

E  exponents

M multiplication

D division

A addition

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6 0
3 years ago
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