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sukhopar [10]
3 years ago
11

Simplify: -2x(3 - 5x)

Mathematics
2 answers:
AnnyKZ [126]3 years ago
4 0

Answer:

-6x+10x^2

Step-by-step explanation:

you just have to distribute the -2x to the numbers inside the parenthesis.

hope this helps

Lemur [1.5K]3 years ago
3 0

Answer:

10x² - 6x

Step-by-step explanation:

-2x(3 - 5x)

={(-2x) . 3} - {(-2x) . 5x}

=-6x - (-10x²)

=-6x + 10x²        [negative plus negative=positive]

=10x² - 6x

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Which value of x makes the equation 0.5(x + 15) = 2 + 0.75(x - 4) true?
SIZIF [17.4K]

Answer:

Step-by-step explanation:

\frac{1}{2}(x+15) = 2 + \frac{3}{4}(x-4)

To make this easier, to get ride of the fractions, we can multiply both sides by 4

2(x+15) = 8 + 3(x-4)

now use the distributive property

2x + 30 = 8 + 3x - 12\\

now we want to isolate x to one side and isolate all the constants to the other

2x - 3x = 8 - 12 - 30\\

now simplify

-x = -34\\x = 34

to test, we can plug in back to the original

\frac{1}{2}(34+15) = \frac{49}{2}\\\frac{8}{4} + \frac{3}{4}(34-4) = \frac{8}{4} + \frac{90}{4} = \frac{98}{4} = \frac{49}{2}

it works

7 0
3 years ago
A pair of sunglasses has 2 lenses. Each lenses has a radius of 3.5 inches.
melisa1 [442]

Answer:

Area = π×(3.5)^2+ π×(3.5)^2

=76,96902001295 inch²

4 0
3 years ago
tanya makes 5/8 of the foul shots she attempts during a basketball practice, if she took 48 shots, how many did she make?
zaharov [31]

18

calculate \frac{5}{8} × 48 = 5 × 6 = 30

she had 30 foul shots hence 48 - 30 = 18

She made 18 shots


4 0
4 years ago
Read 2 more answers
80% of the 350 employees at animal kingdom park have college degrees. how many employees at the park have college degrees?
DerKrebs [107]

350 \times 80\% \\  = 350 \times  \frac{80}{100}  \\  = 280

Answer : 280 employees at the park have college degrees.

Hope this helps. - M
3 0
3 years ago
1 Point
ki77a [65]

Answer:

Population

Step-by-step explanation:

In mathematics, when we talk about the people, places, or things under consideration, we are referring to the population. The Population is the entire sum of objects in a study. When a researcher wants to study factors that concern a particular set of people, places, or things, the group under study is the population. For example, the researcher might want to do a study on the amount of food consumed by Brazilian students in the year 2019. The Brazilian students represent the population, because they are the group of people being studied.

The population under study might sometimes be difficult to study as a whole. For example, the study of the entire Brazilian students might be cumbersome. In such cases, a sample can be drawn from the population and studied, or the population narrowed down a little more, so that it can be easily studied.

8 0
3 years ago
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