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2 years ago

Multiply (x+4)(2x-3)

Mathematics

1 answer:

Hunter-Best [27]2 years ago

5 0

Answer:

2x^2 + 5x - 12

Step-by-step explanation:

(x+4)(2x-3)

2x^2 - 3x + 8x - 12

2x^2 + 5x - 12

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A rectangular piece of metal is 15 in longer than it is wide. Squares with sides 3 in long are cut from the four corners and the

ziro4ka [17]

Answer:

The original dimensions of the piece of metal are

Length: 36 inches

Width: 21 inches

Step-by-step explanation:

Let

x ----> the original length pf the piece of metal

y ----> the original width pf the piece of metal

we know that

$x=y+15$ ----> equation A

The volume of the box is equal to

$V=LWH$

we have

$V=1,350\ in^3$

$L=(x-3-3)=(x-6)\ in\\W=(y-3-3)=(y-6)\ in$

$H=3\ in$

substitute in the formula of volume

$1,350=(x-6)(y-6)(3)$ ----> equation B

substitute equation A in equation B

$1,350=(y+15-6)(y-6)(3)$

solve for y

$450=(y+9)(y-6)$

$y^2-6y+9y-54=450\\y^2+3y-504=0$

Solve the quadratic equation by graphing

using a graphing tool

The solution is y=21

Find the value of x

$x=21+15=36$

therefore

The original dimensions of the piece of metal are

Length: 36 inches

Width: 21 inches

5 0

2 years ago

Is 0.007 times 10 equivalent to 0.07

katen-ka-za [31]

Yes 0.007*10= 0.07
Youre correct

7 0

2 years ago

Read 2 more answers

If you roll a standard six sided dice, what is the probability you will roll a four?

astra-53 [7]

Answer:

1/6

Step-by-step explanation:

There are 6 sides on a dice. Every time you roll you you will have one of those sides. So it is a 1 in 6 chance of you getting 4, meaning that the answer to this problem is 1/6

7 0

3 years ago

Q1. In a fruit cocktail, for every 30 ml

lora16 [44]

Answer:

3/10

Step-by-step explanation:

$\frac{30}{30 + 20 + 50} = \frac{3}{10}$

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2 years ago

Can someone answer this question??

Andrews [41]

Answer:

don't ask for an explanation. your answer is below.

Step-by-step explanation:

$\frac{(xy+1)^x^+^y^-^(^x^+^y^)(x-y)^x^+^yy^2^xx^-^x^-^y}{(xy-1)^y^+^x}$

8 0

2 years ago