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dedylja [7]
3 years ago
5

Drew's weekly allowance is $8. His friend Jan's weekly allowance is $10. Drew spends $3 a week and Jan spends $4 a week.

Mathematics
1 answer:
Oxana [17]3 years ago
3 0
For drew
5w=55

5w/5=55/5

W=11
11 weeks

For jan

6w= 55

6w/6 = 55/6

W=9.16
9 weeks

Together
6+5 = 11
11w=55
11w/11=55/11
W=5
5 weeks
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1. The equation of a circle is x^2 + y^2 + 6x - 4y + 4 = 0. What are the center and the radius of the circle? Show ALLLLLL your
Novosadov [1.4K]

Answer:

(2, -3) and r = 3.

Step-by-step explanation:

you can also plug this equation in desmos but I guess it's good to know how to do it also:

The equation of a circle is (x-h)^2 + (y-k)^2 = r^2

Now in order to make a perfect square on both sides, we need to do this:

First add 9 to both sides:

x^2 + 6x + 9 + y^2 -4y +4 = 9.

I purposely shifted it to show the perfect square created when you add 9 to both sides. Factor:

(x+3)^2 + y^2 - 4y + 4 = 9.

now the second bolded part is allso a perfect square. Factor:

(x+3)^2 + (y-2)^2 = 9

Based on the equation of a circle, the center must be at (2, -3) and the radius is the square root of 9 which is 3.

:)

8 0
2 years ago
Practice Skills_ Simplifying Inequality1. 3( 1/2 - y) = 3/5 + 15y. What isthe solution to the given inequality?
Angelina_Jolie [31]

3( 1/2 - y) = 3/5 + 15y

Applying distributive property:

3*1/2 - 3y = 3/5 + 15y

3/2 - 3y = 3/5 + 15y

3/5 is adding on the right, then it will subtract on the left

3y is adding on the left, then it will subtract on the right

3/2 - 3/5 = 15y + 3y

15/10 - 6/10 = 18y

9/10 = 18y

18 is multiplying on the right, then it will divide on the left

9/10*1/18 = y

1/10*1/2 = y

1/20 = y

6 0
1 year ago
Which equation illustrates the identity property of multiplication? (x + yi) × z = (xz + yzi) (x + yi) × 0 = 0 (x + yi) × (z + w
Ilia_Sergeevich [38]

Answer: (x + yi) × 1 = (x + yi)

Step-by-step explanation:

8 0
2 years ago
What i
shusha [124]

Answer:

Answer: B, 6/11

Step-by-step explanation:

<em>Well we know that 3+2+1=6+3=9.</em>

<em>So that means we will add the 2 brown crayons to the denominator.</em>

<em>The denominator before we added 2 to it, it was 9 as a common denominator. If we want to get the common numerator we are going to have to add the top and that will become 9 then you will have to subtract that by 3</em>

<em>6/11 is also the smallest number that you can get.</em>

<em>You can turn the fraction into a decimal and have it that way to make it easier.</em>

<em>When you turn a fraction into a decimal the number is always the same but with comparing numbers it is a lot easier to do than comparing fractions</em>

Hope this helps, and if it did I would appreciate it if you marked me as Brainllest. Have a wonderful day!

6 0
2 years ago
Is 1 5/8 greater than, less than, or equal to 1.6?​
tigry1 [53]

Answer:

1 \frac{5}{8}  > 1.6

Step-by-step explanation:

1 \frac{5}{8}  \: ... \: 1.6

\frac{1 \times 8 + 5}{8}   \: ... \: 1.6

\frac{8 + 5}{8}  \: ... \: 1.6

\frac{13}{8}  \: ... \: 1.6

\frac{13}{8}  \: ... \:  \frac{16}{10}

\frac{13 \times 5}{8 \times 5}  \: ... \:  \frac{16 \times 4}{10 \times 4}

\frac{65}{40}  \: ... \:  \frac{64}{40}

\frac{65}{40}  >  \frac{64}{40}

#IfWrongPleaseReport

#StudyTogetherWithMe

#ILoveMath

8 0
3 years ago
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