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AysviL [449]
3 years ago
10

a.) Simplify the following expression: (9x2+2x−5)+(6x2−5x+4)(9x2+2x-5)+(6x2-5x+4) b.) Explain how you know your answer is correc

t.
Mathematics
1 answer:
MatroZZZ [7]3 years ago
3 0
54x4-12x3-30x2-45x3-10x2+25x+9x2+2x-5+6x2-5x+4= 54x4-57x3-25x2+22x-1. This is the correct answer because I distributed the first parentheses to the second. then from there you combine like terms.
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If Denise and Alex add a 15% tip after the tax is applied, what is the total cost, including tip?
Murljashka [212]
What’s the cost before the tip? We need to know that before calculating the cost with the tip.
4 0
3 years ago
Which is bigger 4 pints or 4 quarts
Marat540 [252]
4 quarts is bigger :)
3 0
3 years ago
an electronics company is designing a watch with a face that is in the shape of a hexagon and two congruent trapezoids attached.
nalin [4]

The total area of the face of the watch to the nearest tenth of a square centimemter is 9.0 cm²

Since an electronics company is designing a watch with a face that is in the shape of a hexagon and two congruent trapezoids attached. The heights of the trapezoids and the apothem of the hexagon measure 2 centimeters each, and the length of the shorter base of each trapezoid is 1.5 centimeters, the radii of the hexagon, and the base of the trapezoid form a triangle of

  • height, h = apothem of the hexagon = 2 cm and
  • base, b = length of shorter base of trapezoid.
<h3>Area of the triangle</h3>

So, the area of this triangle is A = 1/2bh

= 1/2 × 1. 5 cm × 2 cm

= 1.5 cm × 1 cm

= 1.5 cm²

<h3>Area of the hexagon</h3>

Since there are 6 of such triangles in the hexagon, the area of the hexagon, A' = 6A

= 6 × 1.5 cm²

= 9.0 cm²

So, the total area of the face of the watch to the nearest tenth of a square centimemter is 9.0 cm²

Learn more about area of a hexagon here:

brainly.com/question/369332

5 0
2 years ago
Benjamín made 3 times more than Alberto and Carlota 2 times more than Benjamín, so how much is it, help me
vichka [17]

Step-by-step explanation:

you are "hiding" some more information (like how much they made together).

without that we cannot calculate the actual values.

all I can do is set up the equations expressing the given relations between the parts of the total :

a = amount Alberto made

b = amount Benjamin made

c = amount Carlota made

b = 3×a

c = 2×b = 2× 3×a = 6×a

that's it.

your see ? now we need something that "ties" all 3 together, an equation of all 3 variables, where we can use the first 2 equations (by substitution) and then solve for the remaining third variable.

and that is missing.

if it is something like "together they made x", then we would have

a + b + c = x

a + 3a + 6a = x

10a = x

a = x/10

b and c we get then from the first 2 equations by simply using the calculated value of a :

b = 3×(x/10) = 3x/10

c = 6×(x/10) = 6x/10 = 3x/5

7 0
2 years ago
PLZZZZ!!! IT'S VERY URGENT I WILLARK BRAINLIEST .
Pani-rosa [81]

Answer:

x^3 + 1

Step-by-step explanation:

Swap x and y and solve for y:

x =(y-1)^⅓

x³ = y-1

y = x³+1

f(x) = x³+1

4 0
3 years ago
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