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Pachacha [2.7K]
3 years ago
7

david has $17,000 to invest.he invests $12,000 in a mutual fund that pays 12% simple interest.if he wants to make at least $2200

in yearly interest at what minimum rate does the remainder of the money need to be invested
Mathematics
1 answer:
valentina_108 [34]3 years ago
6 0
Think the awnser is$11040
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If x-y=1 and xy= 56 then find the value of x+y​
tester [92]

Answer:

x + y = ±15

Step-by-step explanation:

Step 1: Write out systems of equations

x - y = 1

xy = 56

Step 2: Rearrange 1st equation

x = y + 1

Step 3: Substitution

(y + 1)y = 56

Step 4: Distribute

y² + y = 56

Step 5: Solve for <em>y</em>

y² + y - 56 = 0

(y - 7)(y + 8) = 0

y = -8, 7

Step 6: Plug in <em>y </em>to find <em>x</em>

x - 7 = 1

x = 8

x - (-8) = 1

x + 8 = 1

x = -7

Step 7: Find answer

x + y = ?

8 + 7 = 15

-7 + -8 = -15

So both 15 and -15 could be the answer.

3 0
3 years ago
Read 2 more answers
A scale on a blue print drawing of a house shows that 10 1010 centimeters represents 2 22 meters. What number of actual meters a
Ivenika [448]

Answer:

On Blue print 18 centimeters represents <u>3.6 meters</u>.

Step-by-step explanation:

Given:

Scale is 10 cm = 2 m

We need to find the number of actual meters are represented by 18 1818 centimeters on the blue print.

Solution:

Now we know that;

10 cm = 2 m

so 1 cm = Number of meters in 1 cm.

By using Unitary method we get;

Number of meters in 1 cm = \frac{2}{10}=0.2\ m

Now we know that;

1 cm = 0.2 m

18 cm = Number of meters in 18 cm.

Again by using Unitary method we get;

Number of meters in 18 cm = 0.2\times 18 = 3.6\ m

Hence On Blue print 18 centimeters represents <u>3.6 meters</u>.

7 0
3 years ago
Answer like gauss 1+3+5+7+...=999
raketka [301]

1+3+5+7+...+999 =

= 1+2+3+4+...+500

     +1+2+3+...+499

= 2·(1+2+3+...+499) + 500

= 2·(499·500)/2 + 500

= 499·500 + 500

= 500·(499 + 1)

= 500·500

= 250.000

7 0
3 years ago
A town has accumulated 2 inches of snow, and the snow depth in increasing by 6 inches every hour. A nearby town has accumulated
earnstyle [38]
Town A starts with 2in and has a rate of accumulation of 6in every 1 hour
Town B starts with 9in and has a rate of accumulation of 3in every 1 hour

If X is number of hours then:

2+ 6X= 9+3X
6x-3x=9-2
3x=7
X=7/3 is about 2 hours
7 0
3 years ago
How many hours did Miriam stop to rest? How many hours did it take Miriam to walk the initial 8 miles?
makvit [3.9K]
Give the rest of the question
4 0
3 years ago
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