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UNO [17]
2 years ago
10

At what rates did she invest? $1500 invested at___% $800 invested at ____%

Mathematics
1 answer:
frosja888 [35]2 years ago
3 0

Answer:

4% and 5% respectively

Step-by-step explanation:

Let the intrest rate be x in the first account at x% and (x+1)% in the second account.

ATQ, 100=(x)*1500/100+(x+1)*800/100

x=4.

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Tell whether the system has one solution, infinitely many solutions, or no solution.
nadya68 [22]
X=-7y+34
x+7y=32

To begin with make the two problems the same kind of problem. By adding 7y on both sides for the first problem.
x+7y=34
x+7y=32

So the correct answer would be no solution because it's the same problem and it can't equal to different answers.

8 0
3 years ago
Anyone knows the answer
vesna_86 [32]

Answer:

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Step-by-step explanation:

hope this helps

7 0
2 years ago
A community is building a square park with sides that measure 150 meters. To separate the picnic
Firlakuza [10]

Answer:

212 meters

Step-by-step explanation:

The diagonal of a square is the square root of 2 times the length of the square. This can be rewritten as the square root of (2*area)

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The square root of 45000 is about 212.13, which would round down to 212 meters.

7 0
3 years ago
a man invested a total of $3,000 in two investments. he made a profit of 3% on the first investment and 4% on the second investm
klio [65]
Let the first investment be x
and second be 3000-x

so 3%of x + 4% of (3000-x) = 107
By solving x = 1300 

First investment is 1300
second investment is 1700
7 0
3 years ago
Write the slope-intercept form of the equation of the line that passes through the point (-4,0 ), and is parallel to y=-(5/4x)+4
amid [387]

Answer:

Step-by-step explanation:

hello :

note :

Use the point-slope formula.

y - y_1 = m(x - x_1)   when : x_1= -4      y_1= 0  

     m= +5/4 (parallel means same slope)

an equation in the point-slope form is : y +0= -5/4(x+4)

4 0
2 years ago
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