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4 years ago

If f(x)=-3x^2-2x+1, find 2[f(r)]

Mathematics

1 answer:

katen-ka-za [31]4 years ago

5 0

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I really need some help . I don’t know if my answer is correct or not ?

Aleks [24]

Answer:

$\sqrt{2p + 5} - 3 (p = 10) \\ \sqrt{20 + 5} - 3 \\ \sqrt{25} - 3 \\ 5 - 3 \\ 2$

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3 years ago

Read 2 more answers

A gift box has the shape of a rectangular prism. How much wrapping paper do you need to cover the box?

Natasha_Volkova [10]

Answer:

768 in²

Step-by-step explanation:

Surface Area = 2(15*14) + 2(15*6) + 2(14*6)

Surface Area = 2(210 + 90 + 84)

Surface Area = 2(384)

Surface Area = 768

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

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3 years ago

Talehia is working on the monthly budget her monthly income is 500 she has allocated 200 for savings 100 for vehicle expenses an

olganol [36]

Answer:

125

Step-by-step explanation:

total earning = 500

saving = 200

reaminings = 500-200

temainings= 300

vehical expenses=100

now remainings= 300-100

remaining=200

closing= 75

remaings=200-75

remainings for entertainment= 125

3 0

3 years ago

Which equation has the solution x = 6? One-sixth x = three-fourths x + 2 One-fourth x + one-half = one-third x One-half x + 3 =

NISA [10]

Answer:

x = 6

One-fourth x + one-half = one-third x

Step-by-step explanation:

1/4 x + 1/2 = 1/3 x

1/4 x - 1/3 x = - 1/2

(3x - 4x)/12 = -1/2

-x/12 = -1/2

-x = -12/2

-x = -6

x = 6

6 0

4 years ago

Find the equation of a line, in slope-intercept form of a line that passes through the point (-5, -1) and is parallel to -2x+4y=

Lana71 [14]

Answer:

$y=\frac{1}{2}x+\frac{3}{2}$

Step-by-step explanation:

Let's write $-2x+4y=8$ to slope-intercept form.

We do this by solving for $y$

$-2x+4y=8\\$

Add 2x to both sides

$4y=8+2x$

Divide both sides by 4

$y=\frac{1}{2} x+2$

Now that we have that equation in slope-intercept form, the question wants us to find a line that is parallel to it that passes the point (-5, -1).

A line is parallel to another line is they have the same exact slope.

The slope is $\frac{1}{2}$ .

Slope-intercept form: $y=mx+b$ , where $m$ is the slope and $b$ is the y-intercept.

So, let's see what we have here so far.

$y=\frac{1}{2}x +b$

All we have to do is find $b$ .

The question wants the line to pass the point (-5, -1).

Let's plug that point in.

$-1=\frac{1}{2} (-5)+b\\-1=\frac{-5}{2}+b\\\frac{3}{2} =b\\$

We have all the information needed to finish this problem!

So, the line that is parallel to $-2x+4y=8$ and passes through the point (-5, -1).

$y=\frac{1}{2}x+\frac{3}{2}$

3 0

3 years ago