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4 years ago

Can I get some help plz

Mathematics

1 answer:

saul85 [17]4 years ago

4 0

The line y=-x-3 begins in Q II and ends in Q IV. Since you have the "equal to or greater than" operator, the shaded area is ABOVE this line, and the line itself is dark (shaded) because of the "equal to."

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Please help in math I give lots of points.

disa [49]

$\text{Put the value of x to the expression}\\\\\sqrt{x+3};\ x=15\\\\\sqrt{15+3}=\sqrt{18}=\sqrt{9\cdot2}=\sqrt9\cdot\sqrt2=\boxed{3\sqrt2}$

$\text{Put the value of x to the expression}\\\\\dfrac{6}{\sqrt{x}},\ x=3\\\\\dfrac{6}{\sqrt3}=\dfrac{6\cdot\sqrt3}{\sqrt3\cdot\sqrt3}=\dfrac{6\sqrt3}{3}=\boxed{2\sqrt3}$

$\text{Put the value of x to the expression}\\\\4\sqrt{x+1}-3\sqrt{2x+6},\ x=3\\\\4\sqrt{3+1}-3\sqrt{2(3)+6}=4\sqrt4-3\sqrt{6+6}=4(2)-3\sqrt{12}\\\\=8-3\sqrt{4\cdot3}=8-3\sqrt4\cdot\sqrt3=8-3(2)\cdot\sqrt3=\boxed{8-6\sqrt3}$

8 0

3 years ago

3/20<br> 4x + 2(x - 6) = 12

Nat2105 [25]

Answer:

4x+2(x-6)=12

$4x {}^{2} - 24 + 2x - 12 = 12 \\ 4x {}^{2} - 36 + 2x = 12 \\ 4x {}^{2} + 2x = 12 + 36 \\ 4x {}^{2} + 2x = 48 \\ 4x { }^{2} + 2x - 48 = 0$

7 0

3 years ago

Jamal has a bag with 5 orange, 4 blue and 3 green marbles. He pulls out one marble without looking, puts it back in the bag and

VLD [36.1K]

Answer:

Step-by-step explanation:

the whole bag is made of 5 orange +4blue+3 green= 12 marbles

P of orange than green = P orange * P green = 5/12 * 3/12 = 15/144 = 5/48

you multiply when the events depend on each other to happen, so for the orange and then green to happen you need the orange and also the green

7 0

3 years ago

What is the sum of the first five terms of a geometric series with a1= 10 and r= 1/5

JulsSmile [24]

$\bf \qquad \qquad \textit{sum of a finite geometric sequence}\\\\S_n=\sum\limits_{i=1}^{n}\ a_1\cdot r^{i-1}\implies S_n=a_1\left( \cfrac{1-r^n}{1-r} \right)\quad \begin{cases}n=n^{th}\ term\\a_1=\textit{first term's value}\\r=\textit{common ratio}\\----------\\a_1=10\\r=\frac{1}{5}\\n=5\end{cases}$

$\bf S_5=10\left( \cfrac{1-\left( \frac{1}{5} \right)^5}{1-\left( \frac{1}{5} \right)} \right)\implies S_5=10\left( \cfrac{1-\frac{1^5}{5^5}}{\frac{4}{5}}\right)\implies S_5=10\left( \cfrac{\frac{3124}{3125}}{\frac{4}{5}} \right)\\\\\\S_5=10\cdot \cfrac{781}{625}\implies S_5=\cfrac{1562}{125}$

5 0

3 years ago

If you have a decimal answer, round to the nearest tenth!<br><br> 8n−6=2n+13

cupoosta [38]

Answer:

n = 3.17

Step-by-step explanation:

Given:

8n − 6 = 2n + 13

Collect like terms

8n - 2n = 13 + 6

6n = 19

Divide both sides by 6

n = 19/6

= 3.167

Approximately to the nearest tenth

n = 3.17

5 0

3 years ago