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andrew11 [14]
3 years ago
12

Write a quadratic equation in standard form that has the following solutions: x = 4/3 and x = - 2/5

Mathematics
1 answer:
Leni [432]3 years ago
6 0

Answer:

15x^2 - 14x - 8 = 0.

Step-by-step explanation:

(x  - 4/3)(x + 2/5) = 0

Converted to integer values by multiplying the first bracket by 3 and the second by 5:

(3x - 4)(5x + 2) = 0

Expanding the brackets:

15x^2 + 6x - 20x - 8 = 0

15x^2 - 14x - 8 = 0.

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Jobisdone [24]

Answer:

I = p× r× t

300×8×4

pinicipal × rate × time

That is the formula

the answer is 300×8×4= 9600

8 0
3 years ago
What is the smallest number that is a multiple of both 4 and 6
lana66690 [7]

Answer:

2

Step-by-step explanation:

4 2x2 is 4

2x3 is 6

sorry for the long type it says 20 character above

5 0
3 years ago
Read 2 more answers
Search cos jk and tan jk knowing that sin jk = 8/3
aleksley [76]

Answer:

cosjk = √55 i/3

tanjk = 8/√55 i

Step-by-step explanation:

Given

sin jk = 8/3

According to SOH CAH TOA

Sin theta = opposite/hypotenuse = 8/3

Opposite = 8

hypotenuse = 3

Get the adjacent using the pythagoras theorem

hyp² = opp²+adj²

adj² = hyp² - opp²

adj² = 3² - 8²

adj² = 9-64

adj² = -55

adj = √-55

adj = √55 i (i = √-1)

Get cosjk

cosjk = adj/hyp

cosjk = √55 i/3

Get tanjk

tanjk = opp/adj

tanjk = 8/√55 i

3 0
3 years ago
Which situation could be solved using the equation -4+4=0
navik [9.2K]

we are supposed to explain

Which situation could be solved using the equation -4+4=0

As we can see in the given equation , one number is -4 and the other number is 4

When we add two number of same value but opposite in sign we get zero.

This equivalent to the real life situation of paying a post paid bills.

Suppose you are using a post paid service , and the bills gets generated at the end of the month.

Suppose the bills amount is $x.

Once you pay that bills , then total outstanding again becomes $0.

Because -x+x=0

5 0
3 years ago
Find the percent of change. Round to the nearest tenth of a percent if necessary. 57 people to 65 people. About___ % increase.​
kap26 [50]

Answer:

  14.0% increase

Step-by-step explanation:

One formula you can use for this is ...

  percent change = ((new value)/(old value) -1) × 100%

  = (65/57 -1) × 100%

  ≈ 0.1403 × 100%

  ≈ 14.0% . . . . . . the positive sign indicates an increase

5 0
3 years ago
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