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vovangra [49]
3 years ago
14

Solve 8x2 + 7x - 15 = - 7.

Mathematics
1 answer:
prohojiy [21]3 years ago
7 0
Step by ... 8*x^2+7*x-15-(-7)=0 ... 3.2<span>Solving 8x2</span>+7x<span>-8 = 0 by Completing The Square .</span>
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A Bank offers an annual simple interest rate of 8% on home improvement loans. Tobias borrowed $17,000 over a period of 2 years.
Alex17521 [72]

We first find out the amount in dollars of interest accrued after 2 years  time.

Interest = Prt

where P is the principal, r is the rate and t is  time

8% written in decimal fraction → 8/100 → 0.08

Interest = 17000 × 8% × 2

Interest = 1700 × 0.08 × 2

Interest =  2,720 dollars

We add the principal and the interest to get full amount paid, so:

17000 + 2,720 = 19,720

I hope that you good day

6 0
4 years ago
Add 7/8 + 2 3/24 + 6 1/6
natali 33 [55]

Answer:

9 4/24 or 9 1/6

  1. Find the LCM(lowest common multiple) of 8, 24 and 6.
  2. The LCM of 8, 24 and 6 is 24.
  3. We now want to turn all the denominators into 24 so we are going multiply 7/8 by 3 and 1/6 by 4. We won't need to turn the denominator of 3/24 into 24 because it's already 24
  4. Whatever you do to the denominator you have to do to the numerator, so you also have to multiply the numerator of 7/8 by 3 and the numerator of 1/6 by 4
  5. That now results in 21/8 + 2 3/24 + 6 4/24
  6. Now you have to add all the fractions together which is going to equal to 28/24
  7. Because 28/24 is more than the whole, subtract 28 from 24 which gives us 4. That 4 is now our new numerator
  8. We are now going to all the whole numbers 6+2+1=9. Incase you're wondering, the '1' came from the 28/24
  9. The answer you should get should be 9 4/24 or if it should be simplified it would be 9 1/6
3 0
3 years ago
the results of a survey of 878 students show that 62% plan to upgrade their smartphone how many will upgrade
OLga [1]

544 people will upgrade. To get this just make them into fractions

X/878 = 62/100

And then cross multiply

4 0
3 years ago
If the dot product of two nonzero vectors v1 and v2 is nonzero, what does this tell us?
vredina [299]

ANSWER

A) v1 is not perpendicular to v2

EXPLANATION

Two non-zero vectors are orthogonal or perpendicular if their dot product is zero.

In other words,if two non-zero vectors are not orthogonal or perpendicular then their dot product is not equal to zero.

From the question v1 and v2 are non-zero vectors and their dot product is not equal to zero.

This tells us that, the two vectors are not perpendicular.

The correct choice is A.

6 0
3 years ago
A first number plus twice a second number is 1. Twice the first number plus the second totals 23. Find the numbers.
TEA [102]
X=15
Y= -7
Remember to form simultaneous equations with the information given

7 0
3 years ago
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