All categories

2 years ago

(−7c+8d)0.6 khan academy pls help.

Mathematics

1 answer:

Burka [1]2 years ago

4 0

Answer:

$\sf -4.2c+4.8d$

Step-by-step explanation:

$\sf \left(-7c+8d\right)\cdot \:0.6$

$\sf 0.6\left(-7c+8d\right)$

Apply distributive property

$\sf 0.6\left(-7c\right)+0.6\times \:8d$

$\sf -4.2c+4.8d$

Have a good day!

You might be interested in

If 2/5 of pizza costs $1.00 how much will the whole pizza cost

Genrish500 [490]

Answer:

2/5

Step-by-step explanation:

3 0

2 years ago

Triangle X Y Z is shown. Angle X Z Y is a right angle. Angle Z X Y is 60 degrees and angle X Y Z is 30 degrees. The length of hy

vladimir1956 [14]

Answer:

StartFraction StartRoot 3 EndRoot Over 3 EndFraction

Step-by-step explanation:

see the attached figure to better understand the problem

step 1

we know that

In the right triangle XYZ

$cos(Y)=\frac{ZY}{XY}$ ---> adjacent side divided by the hypotenuse

substitute the values

$cos(30\°)=\frac{ZY}{4}$

Remember that

$cos(30\°)=\frac{\sqrt{3}}{2}$

substitute

$\frac{\sqrt{3}}{2}=\frac{ZY}{4}$

$ZY=(4)\frac{\sqrt{3}}{2}$

$ZY=2\sqrt{3}\ units$

step 2

$sin(Y)=\frac{XZ}{XY}$ --> opposite side divided by the hypotenuse

substitute the values

$sin(30\°)=\frac{XZ}{4}$

Remember that

$sin(30\°)=\frac{1}{2}$

$\frac{1}{2}=\frac{XZ}{4}$

$XZ=2\ units$

step 3

$tan(Y)=\frac{XZ}{ZY}$ --> opposite side divided by adjacent side

substitute the values

$tan(Y)=\frac{2}{2\sqrt{3}}$

$tan(Y)=\frac{1}{\sqrt{3}}$

Simplify

$tan(Y)=\frac{\sqrt{3}}{3}$

StartFraction StartRoot 3 EndRoot Over 3 EndFraction

7 0

3 years ago

Read 2 more answers

How can I write a story about the doubles plus 2 fact 5+7=12.??

aksik [14]

One <u>possible story</u> is:

I had 5 apples. My sister gave me 7, and now I have 12.

Explanation:

We are writing a story for 5+7=12. This means we need to start with 5 objects and somehow gain 7 more. In our story, we start with 5 apples and we get 7 more.

The last part is that our total must be 12. In our story, we end with 12 apples.

3 0

2 years ago

Read 2 more answers

Answer..........please

Marina86 [1]

Answer: 2.5

Step-by-step explanation:

I believe 2.5 because If we take y/x we have 4,10 so I divide.

7 0

3 years ago

Read 2 more answers

When steve woke up. his temerature was 102. two hours later it was 3 lower what is his temerature now?