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4 years ago

Evaluate the expression when =m6 m2-18

1 answer:

8 0

So first, we should substitute the variable m for the value that we are given. If m=6, then plugging in 6 for m will give us the equation 6(2)-18. Then, we will get 12-18. After subtracting 18 from 12, we will get -6 as an answer.

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For what values of h and k does the linear system have infinitely many solutions? 2x1 + 5x2 = −1 hx1 + kx2 = 7

Kruka [31]

Answer:

The values of $h$ and $k$ for a linear system with infinitely many solutions are -2 and 5, respectively.

Step-by-step explanation:

Let $2\cdot x_{1}+5\cdot x_{2} = -1\cdot h\cdot x_{1} + k\cdot x_{2} = 7$ , if this linear system has infinitely many solutions, then the following conditions must be met:

$-1\cdot h = 2$ and $k = 5$ .

$h = -2$ and $k = 5$

The values of $h$ and $k$ for a linear system with infinitely many solutions are -2 and 5, respectively.

4 0

3 years ago

Is this statement true the top of the parallelogram is twice the circumference

Ratling [72]

No, because a parallelogram does not have a circumference, only circles do. <span />

3 0

3 years ago

What is the y-intercept? O (0, -5) O (0-2) O (0, 2) O (0, 4)

marin [14]

Answer:

0,0

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

How many vertices does a trinagular prism have ?

choli [55]

Answer: A triangular prism has 6 vertices. hope this helps :)

brainliest?

6 0

3 years ago

Reagan has a savings account that earns 1.87% interest, compounded quarterly. If she needs $20,857 for a down payment on a house

MatroZZZ [7]

To solve this, we are going to use the compounded interest formula: $A=P(1+ \frac{r}{n} )^{nt}$
where
$A$ is the final amount after $t$ years
$P$ is the initial investment
$r$ is the interest rate in decimal form
$n$ is the number of times the interest is compounded per year
$t$ is the time in years

We know from our problems that she needs $20,857 for a down payment on a house in 9 years, so $A=20857$ and $t=9$ . To convert the interest rate to decimal form, we are going to divide the rate by 100%
$r= \frac{1.87}{100} =0.0187$
Since the interest is compounded quarterly, it is compounded 4 times per year; therefore, $n=4$ .
Lets replace the values in our formula to find $P$ :
$A=P(1+ \frac{r}{n} )^{nt}$
$20857=P(1+ \frac{0.0187}{4} )^{(4)(9)}$
$P= \frac{20857}{(1+ \frac{0.0187}{4} )^{(4)(9)}}$
$P= \frac{20857}{(1+ \frac{0.0187}{4} )^{36}}$
$P=17633.17$

We can conclude that the correct answer is: <span>B. 17,633.17</span>

7 0

4 years ago