Answer:
Step-by-step explanation:
This system of equations is convenient, because the second equation already expresses y in terms of x. Now, you can substitute that in.
Multiplying both sides by -1 and bringing the 5 over:
Combining like terms and factoring out 5:
Factoring:
Solutions:
Hope this helps!
Let x be the amount he invests at 6%
1280 = 0.06x + 0.07(20000 - x)
1280 = 0.06x + 1400 - 0.07x
1280 - 1400 = -0.01x
-120 / -0.01 = x
x = 12000
Therefore, he invests $12,000 at 6% and $8,000 at 7%
Answer:
A separate answer sheet for Part I has been provided to you. Follow ... Record your answers to the Part I multiple-choice questions on the separate ... Your answer sheet cannot be accepted if you fail to sign this ... x V(x). 0. 4. 1 5.4. 2 7.29. 3 9.84. Which equation and statement ... Number of Candy Bars Sold.
Step-by-step explanation:
Answer:
The size of an angle is measured in degrees (see Angle Measures). When we say 'the angle ABC' we mean the actual angle object. If we want to talk about the size, or measure, of the angle in degrees, we should say 'the measure of the angle ABC' - often written m∠ABC.
Step-by-step explanation:
hope this helped
Answer: The triangle is a obtuse triangle. Because two angles are less than 90 and 110 is a obtuse angle.
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