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2 years ago

Please help me it would mean a lot thanks!

Mathematics

2 answers:

marishachu [46]2 years ago

7 0

Answer:

the answer would be -20

Step-by-step explanation:

Yuki888 [10]2 years ago

5 0

Answer:

1/8

Step-by-step explanation:

First you substitute b for -6.

-6 + 7 = -1

Then you substitute a for -4

2× -4 = -8

Now you have -1/-8, but because they are both negative the solution becomes positive

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What is 1/300000 as a decimal?

olasank [31]

Answer:

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Step-by-step explanation:

I am not sure my answer correct or not,hope you know it.

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10 months ago

-8-8x^2=-31<br> how to solve for x

Zepler [3.9K]

Answer:

x = ± $\sqrt{\frac{23}{2\sqrt{2}}}$

Step-by-step explanation:

-8 - 8x^2= -31

Since this is a quadratic, it needs to be factored.

First, move the x to the other side:

-8 = 8x^2 - 31

Then, get the x alone by first adding 31:

23 = 8x^2

then dividing by 8:

x^2 = 23/8

Finally, square root both sides and remember the even roots property:

x = ± $\sqrt{\frac{23}{8}}$

and simplify the root 8:

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Note: This answer may have a mistake.

8 0

1 year ago

Evaluate the expression a•b for a =24 and b=8

Butoxors [25]

$\huge\text{Hey there!}$

$\mathsf{a\times b}}$

$\mathsf{= 24\times8}$

$\mathsf{= 192}$

$\huge\textbf{Therefore, your answer should be:}$

$\huge\boxed{\mathsf{192}}\huge\checkmark$

$\huge\text{Good luck on your assignment \& enjoy your day!}$

<h3>~ $\frak{Amphitrite1040:)}$ </h3>

4 0

1 year ago

How would you work out this equation? <br> 4x+3y=-23 <br> -2x-3y=25

tigry1 [53]

You need to move your contents e.I. 3,4,5 and your variables e.I.2x, 5y, 2z first

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2 years ago

Find the coordinates of P ' if D o, 2.4 (x,y) is applied to the triangle below

guajiro [1.7K]

Answer:

The coordinates of P' are (4.8,-4.8).

Step-by-step explanation:

The rule of dilation $D_{o,2.4}(x,y)$ represent the dilation with scale factor 2.4 and center at origin.

If the scale factor of the dilation is k and the center is (0,0), then

$(x,y)\rightarrow (kx,ky)$

Since the scale factor is 2.4, therefore

$(x,y)\rightarrow (2.4x,2.4y)$

From the given figure it is noticed that the coordinates of P are (2,-2). The coordinates of P' are

$P(2,-2)\rightarrow P'(2.4(2),2.4(-2))$

$P(2,-2)\rightarrow P'(4.8,-4.8)$

Therefore the coordinates of P' are (4.8,-4.8).

3 0

3 years ago