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3 years ago

What are the equations for these?? someone plz help me:(

Mathematics

1 answer:

vovangra [49]3 years ago

6 0

Answer:

Can u give me a picture more clear

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If P(x) = ax 3 + bx - 3 and P(-1)-0, then the value of P(1) is:

sergey [27]

Answer:

(a) -6

Step-by-step explanation:

P(x) = ax^3 +bx - 3

P(-1) = -a-b-3 = 0
therefore a+b=-3
P(1) = a+b-3
P(1) = -3 - 3 = -6
(a)

7 0

3 years ago

Write the measurements of Sides AB, BC, and CD of the correct net.

scZoUnD [109]

AB- 3in.
BC- 5in.
CD- 7.2in.

sorry i don't really have an explanation I just looked at the picture and i guess imagined it in my head? lol sorry but here are the answers I hope that helps at least a little bit :))

8 0

3 years ago

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Ivan is painting 3 walls in his living room. Each wall measures 9 3/4 feet tall by 14 1/4 feet wide. Ivan needs to estimate the

Alenkinab [10]

Answer:

The estimated area is $416\frac{13}{16}\ ft^{2}$

Step-by-step explanation:

we know that

To estimate the area that Ivan will paint , calculate the area of one wall and then multiply by 3

step 1

Convert the dimensions to an improper fractions

$9\frac{3}{4}\ ft=\frac{9*4+3}{4}=\frac{39}{4}\ ft$

$14\frac{1}{4}\ ft=\frac{14*4+1}{4}=\frac{57}{4}\ ft$

step 2

Find the area of one wall

$(\frac{39}{4})*(\frac{57}{4})=\frac{2,223}{16}\ ft^{2}$

step 3

Multiply the area of one wall by 3

$(3)*\frac{2,223}{16}=\frac{6,669}{16}\ ft^{2}$

step 4

Convert to mixed number

$\frac{6,669}{16}=\frac{6,656}{16}+\frac{13}{16}=416\frac{13}{16}\ ft^{2}$

4 0

3 years ago

Given that y is directly proportional to x. If y = 30 and x= 5, write an equation that connects y with x.

Licemer1 [7]

Given:

y is directly proportional to x.

$y=30$ when $x=5$

To find:

The equation that connects y with x.

Solution:

It is given that, y is directly proportional to x. So,

$y\propto x$

$y=kx$ ...(i)

Where, k is the constant of proportionality.

We have, $y=30$ when $x=5$ . Substituting these values in (i), we get

$30=k(5)$

Divide both sides by 5.

$\dfrac{30}{5}=k$

$6=k$

Substituting $k=6$ in (i), we get

$y=6x$

Therefore, the required equation is $y=6x$ .

8 0

3 years ago

PLEASE BRAINLY AND 25 PIONTS!!!!!!! PLEASE ONLY CORRECT!<br><br> Evaluate the radical.<br><br> 8√3

Anni [7]

So first calculate root of 3 which is 1.732
Next multiply by 8 to get 13.856
Hope this helps:)

7 0

4 years ago

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