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lesantik [10]
3 years ago
9

Help?I need explaining doe am stoopid

Mathematics
2 answers:
nekit [7.7K]3 years ago
8 0
The answer to the first one is $7.60 because when you add $0.40 with $0.90, you get $1.30. because you have to add this to the money in the piggy bank, you would get $7.60; $6.30 + $1.30
Alinara [238K]3 years ago
6 0

Answer:

1.) 7.60

2.) 3.70

3.) 7.20

4.) 9.20

Step-by-step explanation:

6.30 + 0.40 + 0.90 = 7.60

Barrys has $7.60 total

3.20 + 1.60 = 4.80

8.50 - 4.80 = 3.70

Henrys change is $3.70

1.20 + (1.20 × 5)

1.20 + 6 = 7.20

The bouncy ball and pen cost $7.20 together

Monday: $2.30

2.30 × 3 = 6.9

Tuesday: $6.90

6.90 + 2.30 = 9.20

Joe found $9.20 total on Monday and Tuesday

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A new table is on sale for 15% off. If the sale price is $340, what was the original price?
viva [34]

Answer:$400

Step-by-step explanation:

Let them original price be cp

Selling price=340

Percentage decrease=15

Percentage decrease=(cp-sp)/sp x 100

15=(cp - 340)/cp x 100

Cross multiplying

15cp=100(cp-340)

Opening brackets

15cp=100cp-34000

Collect like terms

100cp-15cp=34000

85cp=34000

Divide both sides by 85

85cp ➗ 85=34000 ➗ 85

cp=400

8 0
3 years ago
N equation of a line through (0, 2) which is perpendicular to the line y=3x+3y=3x+3 has slope
zhannawk [14.2K]
Something's not quite right here.  What do you mean by "N?"

I could and will make assumptions regarding what you meant.  (Feel free to correct me if need be.)

Find the equation of a line through (0,2) <span>which is perpendicular to the line y=3x+3.  To find the slope of this perpendicular line, take the negative reciprocal of 3 (the slope of the given line).  It is -1/3.

Using the point-slope form of the equation of a straight line:

y = (-1/3)x + 2 (answer)</span>
7 0
3 years ago
What is the standard form of the equation of the circle with center (-2, -3) and a radius of √2/4?
Lesechka [4]
Centre of circle = (-2, -3)

Equation of the circle:

( x - ( -2) )² + ( y - (-3) )² = (√2/4)²

(x + 2)² + (y + 3)² = 1/8 (Answer D)

7 0
3 years ago
Pen are shipped to the office supply store in boxes of 12 each. Write a function rule to calculate the total number of pens when
Tom [10]

p = 12x is the  function rule to calculate the total number of pens when you know the number of boxes

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

Given that,

Pen are shipped to the office supply store in boxes of 12 each

To find: Write a function rule to calculate the total number of pens when you know the number of boxes

Let "p" be the total number of pens

Let "x" be the number of boxes

Number of pens in each box = 12

Then from given information,

Total number of pens = Number of boxes multiplied by number of pens in each box

p = x \times 12\\\\p = 12x

Thus the function rule is found

6 0
4 years ago
a man pays 330 each month for his gym membership what is the change in the amount of money in his account after two thirds of a
olasank [31]

\dfrac{\$330}{1\,month}\times\dfrac{12\,month}{1\,year}\times\dfrac{2}{3}\,year\\\\=\$2640

The account will have decreased by $2640 after 2/3 year.

6 0
4 years ago
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