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2 years ago

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Mathematics

1 answer:

dedylja [7]2 years ago

7 0

Answer:(-5,2)

Step-by-step explanation:

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Does anybody know how to do Factor with distribution property (Variables) ?

____ [38]

Hope i was able to help

3 0

2 years ago

Read 2 more answers

Picture explains<br> asdasdasd

tamaranim1 [39]

Answer:

Yes, AB is tangent

Step-by-step explanation:

The tangent is perpendicular to the radius. The given triangle is right if AB is tangent.

Use Pythagorean to verify

20² = 16² + 12²
400 = 256 + 144
400 = 400

Confirmed

7 0

1 year ago

Suppose you deposit $12.50 into your savings account each week for 4 weeks and then withdraw $4.80 each week for the next two we

monitta

Answer:

The total change in the amount of money in my account is $ 9.60

Step-by-step explanation:

Given:

Amount of money deposited each week, $A_{d}=\$12.50$

Amount of money withdrawn each week, $A_{w}=\$4.80$

∴ Amount of money deposited in 4 weeks, $A_{dT}=A_{d}\times 4=12.50\times 4 = \$50$

∴ Amount of money withdrawn in 2 weeks, $A_{wT}=A_{w}\times 4=4.80\times 2 = \$9.6$

Now, amount of money left in the account is the difference of the two amounts.

So, amount left = $A_{dT}-A_{wT}=50-9.6=\$40.4$

Therefore, the total change in the amount of money in my account is given as:

Total change = Initial amount after 4 weeks - Final amount in the account.

Total change = $ 50 - $40.4 = $ 9.6

7 0

2 years ago

The sum of a number and twice another number is 17. The sum of twice the first number and the second number is 4. What are the t

zhannawk [14.2K]

Step-by-step explanation:

Given that,

a + 2b = 17

Also,

2a + b = 4

By adding the above expressions we get,

a + 2b + 2a + b = 17 + 4

3a + 3b = 21.

3 (a + b) = 21

a + b = 21/3

a + b = 7 Let us take 'b' = 10

a + 10 = 7

a = 7 - 10

a = -3

Now let's check by verifying by putting a = -3 and b = 10 in the previous expressions

a + 2b = 17

-3 + (2 × 10) = 17

-3 + 20 = 17

17 = 17

2a + b = 4

(2 × -3) + 10 = 4

-6 + 10 = 4

4 = 4

Therefore, a = -3 and b = 10 [(-3,10)] is the solution.

8 0

2 years ago

Please answer this question

Gnesinka [82]

Answer:

There are 20 kids total in the class.

Step-by-step explanation:

15/100 × 20 = 3

You can use direct proportion for any percent calculation.

Compare each number with its percent.

3 i s 15 % of what number? Let the number be x

So, 3 represents 15 % and x represents 100 %

x/ 100 = 3/15

Multiply by 100 to isolate x

x = $\frac{3 x 100}{15}$

x = 20

Check: 15/ 100 × 20 = 3

3 0

2 years ago