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faust18 [17]
3 years ago
12

Which is a solution to the equation 3x2 + 2x − 20 = 2x2 + 15?

Mathematics
1 answer:
qaws [65]3 years ago
5 0

Answer:

33/2

Step-by-step explanation:

6+2x -20= 2×2 +15

-14+2x=19

add 14 to both sides

2x=33

divide 2 in both sides

x=33/2

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If u can do #11 and #12 that would be great but just one would be fine. THANK UUU
12345 [234]

Answer:

x=38

×= 90÷4( divide it to get the answer)

4 0
3 years ago
Susan invests $Z at the end of each year for seven years at an annual effective interest rate of 5%. The interest credited at th
aleksley [76]

Answer:

2.02955

Step-by-step explanation:

Given that:

Susan invests $Z as each year ends for seven years.

So we assume that Z = 1

Susan's accrued value comprises $7 invested each year at a 6 percent annual effective rate.

The cashflow interest:

The cashflow of Susan interest payments are:

Payments   Time

0                     1

0.05               2

2(0.05)           3

3(0.05)           4

4(0.05)            5

5(0.05)            6

6(0.05)            7

The accumulated value of this cash flow is:

(0.05)I_{6\%} = (0.05) \dfrac{((1+0.06)_{6\%} - 6)}{0.06} \\ \\ \implies 1.1653

So Susan accumulated values is:

X = 7 + 1.1653

X = 8.1653

Lori's accumulated value is $14, which she has set aside to plan her cash flow for interest.

The cashflow of Lori interest payments are;

Payments    0     0.025     2(0.025)       3(0.025)    .........   13(0.025)

Time             1        2              3                    4            ..........  14

The accumulated value of cash flow is:

(0.025 )(I)_{3\%} =(0.025) \dfrac{(1+0.03)_{3\%}-13}{0.03}\\ \\= 2.5719

Now, Lori's accumulated value is:

Y = 14 + 2.5719

Y = 16.5719

Since; Susan value X = 8.1653

Lori's value Y = 16.5719

∴

\dfrac{Y}{X}= \dfrac{16.5719}{8.1653}

= 2.02955

7 0
3 years ago
Factorizar 10m-8n-20 ​
omeli [17]

Answer:

-18

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Bài 2: Cho ∆ABC có AB AC = , M là trung điểm của BC . Trên tia đối của tia MA lấy điểm D sao cho MA = MD .
Gennadij [26K]
Hình nè kdowowndjlwlejrbnenabdbsbnwnwnsnsnjdjww

3 0
3 years ago
Evaluate the given algebraic expression for X=-2 and y = 3.<br> ху<br> 24<br> 12<br> 54<br> -24
Jobisdone [24]

Answer:

12 i think, bc 3 is bigger than 2, in apsolute number, so its 12

5 0
4 years ago
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