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aleksklad [387]
2 years ago
7

Plzzzzzzzzzzzzzzzzzzzzzzzz

Mathematics
1 answer:
lesantik [10]2 years ago
6 0

Answer:

10x^2-11x-6

Step-by-step explanation:

To expand, we use the FOIL method. You do this by multiplying each number inside the parenthesis by the other numbers in the other set of the parenthesis. For example, on this problem, you would multiply 5x by 2x, and then 5x by -3.

Step by step, you would:

5x * 2x = 10x^2

5x * -3 = -15x

2 * 2x = 4x

2 * -3 = -6

In an equation, it would expand to 10x^2-15x+4x-6

To simplify, you add like terms (constants and those with the same variable). In this case, you would add together all the terms ending in x.

-15x+4x=-11x

Now, you have added like terms together, so your simplified answer is 10x^2-11x-6.

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A scale for a scale drawing is 10 cm:1 mm. Which is larger, the actual object or scale drawing? Explain.
Marysya12 [62]
The <u>correct answer</u> is:

The scale drawing is larger.

Explanation:

A scale for a scale drawing is written as a ratio in the form
(scale size):(actual size).  

For example, on a map you may have a scale that says 1 in: 2 mi.  This means that 1 inch on the scale is equal to 2 miles on the map.

The scale for this problem is 10 cm: 1 mm.  This means that 10 cm on the scale drawing represents 1 mm on the actual object.

10 cm is larger than 1 mm, so the scale drawing is larger.
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3 years ago
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MONEY Dinner and admission tickets to the aquarium costs $180 for three ladults. If two people each pay $70, how much will the t
EastWind [94]

if three ladult where having $180,and two adults out of the three pay$70 each

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6 0
2 years ago
Mhanifa please help fast! I will mark brainliest!
Mama L [17]

Answer:

1.33

Step-by-step explanation:

if you re-arrange the position of the first triangle and divide the

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8 0
3 years ago
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Sofia has been saving money to buy a new computer. For her birthday, Sofia’s mother gave her twice what she had already saved. N
MAXImum [283]

Answer:

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8 0
2 years ago
Someone please help me ✨
DedPeter [7]

Okay, so keeping mind that the equation for area is A = L x W, look at the measurements you already have. 5.5 x 10^5 is the length, and 4.2 x 10^4 is the width. Switch them into full form and use a calculator to multiply the two for the area in meters.

550000 x 42000 = 23100000000, which in scientific form is 2.31 × 10^10. So that's answer one.

For the second, in kilometers, just take the full measurement you already have, 23100000000 m, transfer it into kilometers, 23100000 km, and then find its scientific notation, 2.31 × 10^7. That's answer two.

To answer the last question for which is more suitable, just consider what number you'd prefer to look at: a bigger number or a smaller one. Since the kilometer measurement number is smaller, its correct.

Summarily, the answers are 2.31 × 10^10, 2.31 × 10^7, and square kilometers, in that order.

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2 years ago
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