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3 years ago

PLEASE HELP QUICKLY❗️❗️❗️

Mathematics

2 answers:

baherus [9]3 years ago

8 0

Answer:

Step-by-step explanation:

Savatey [412]3 years ago

4 0

Answer:

Step-by-step explanation:

Can I have Brain List

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Which of the following represents the solution set to the equation 2x^(2-3)= 64

kolbaska11 [484]

Answer:

$x = \frac{1}{32} \\$

Step-by-step explanation:

${2x}^{(2 - 3)} = 64 \\ {2x}^{ - 1} = 64 \\ \frac{2}{x} = 64 \\ x \times \frac{2}{x} = 64 \times x \\ 2 = 64x \\ \frac{2}{64} = \frac{64x}{64} \\ \frac{1}{32} = x \\$

6 0

3 years ago

30 Yuri has two plum trees, A and B. in his garden

telo118 [61]

Answer:

42kg

Step-by-step explanation:

We are given the amount of plums produced from Tree A. We simply need to find the amount produced by Tree B and add the two numbers up.

Step 1:

Tree B produces 10% more than Tree A, which produces 20kg of plums:

$B=\frac{110}{100} *\frac{20}{1} \\\\B=\frac{110}{5}=\\\\B=22$

Ok! Tree B produces 22kg of plums. Let us find the total amount of plums Yuri gets from both trees.

Step 2:

$Total=A+B\\\\Total=20+22\\\\Total=42$

Yuri gets 42 kg of plums from the trees.

I hope this helps! Let me know if you have any questions :)

4 0

3 years ago

State which of the following sets of ordered pairs represent a function.

stich3 [128]

A function is an equation that has only one answer for y for every x. This means that:

Set A and Set C are functions because their y values don’t repeat.

Set B is NOT a function because the 2 in the y values repeats twice.

Hope I helped!

8 0

3 years ago

Combine like terms 4a2-3b2+ 4b + 10a2

jolli1 [7]

Answer:

14a² - 3b² + 4b

Step-by-step explanation:

Like terms are the terms that have similar stuff on it, like same variables, no variables, and stuff like that.

4a2-3b2+ 4b + 10a2

4a² and 10a² is similar. 4a² + 10a² = 14a²

Now, the equation is 14a² - 3b² + 4b. There is no more like terms left, so that is the answer.

Hope this helps!!

-Ketifa

4 0

3 years ago

Find the area of the region that lies under the parabola y=5x - x^2, where 1≤x≤4. I would definitely like to see some work :)

Elena L [17]

Answer:

16.5 square units

Step-by-step explanation:

You are expected to integrate the function between x=1 and x=4:

$\displaystyle\text{area}=\int_1^4{(5x-x^2)}\,dx=\left.\left(\dfrac{5}{2}x^2-\dfrac{1}{3}x^3\right)\right|_{x=1}^{x=4}\\\\=\dfrac{5(4^2-1^2)}{2}-\dfrac{4^3-1^3}{3}=37.5-21=\boxed{16.5}$

Additional comment

If you're aware that the area inside a (symmetrical) parabola is 2/3 of the area of the enclosing rectangle, you can compute the desired area as follows.

The parabolic curve is 4-1 = 3 units wide between x=1 and x=4. It extends upward 2.25 units from y=4 to y=6.25, so the enclosing rectangle is 3×2.25 = 6.75 square units. 2/3 of that area is (2/3)(6.75) = 4.5 square units.

This region sits on top of a rectangle 3 units wide and 4 units high, so the total area under the parabolic curve is ...

area = 4.5 +3×4 = 16.5 . . . square units

4 0

2 years ago