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Evgen [1.6K]
3 years ago
9

Which method do you prefer to use to find sums-count be tens and ones use compatible numbers or use friendly numbers and adjust?

Explain why.
Mathematics
2 answers:
AnnyKZ [126]3 years ago
7 0
To the CFCs h n b jfnfbvb
Stels [109]3 years ago
4 0
You can use the cfc formula                                                        
You might be interested in
Divide.
MArishka [77]

Answer:

3.75

Step-by-step explanation:

5 1/4÷1/3

so,

= 5 1/4×3/1

= 5 × 0.75

= 3.75

8 0
3 years ago
HELP ASAP what is 9/10-5/10=
Fofino [41]

9/10 - 5/10

because the denominators are the same you keep it and just subtract the numerators

=4/10

This can be reduced to 2/5

6 0
3 years ago
Read 2 more answers
Simplify the expression
chubhunter [2.5K]

Answer:

  sin(α) -cos(α)

Step-by-step explanation:

\dfrac{2\sin^2{\alpha}-1}{\sin{\alpha}+\cos{\alpha}}=\dfrac{(2\sin^2{\alpha}-1)(\sin{\alpha}-\cos{\alpha})}{(\sin{\alpha}+\cos{\alpha})(\sin{\alpha}-\cos{\alpha})}\\\\=\dfrac{(2\sin^2{\alpha}-1)(\sin{\alpha}-\cos{\alpha})}{\sin^2{\alpha}-\cos^2{\alpha}}=\dfrac{(2\sin^2{\alpha}-1)(\sin{\alpha}-\cos{\alpha})}{\sin^2{\alpha}-(1-\sin^2{\alpha})}\\\\=\dfrac{(2\sin^2{\alpha}-1)(\sin{\alpha}-\cos{\alpha})}{2\sin^2{\alpha}-1}\\\\=\sin{\alpha}-\cos{\alpha}

4 0
4 years ago
How would you do this?
Goshia [24]

Using the formula y=200+50x, plug in x=1 to get y=250.


6 0
3 years ago
How can i solve the following <br> 4x-3=2x+7
yan [13]

Answer:

x = 5

Step-by-step explanation:

Note the equal sign, what you do to one side, you do to the other. Isolate the variable, x.

Add 3 and subtract 2x from both sides of the equation:

4x (-2x) - 3 (+3) = 2x (-2x) + 7 (+3)

4x - 2x = 7 + 3

2x = 10

Next, isolate the x by dividing 2 from both sides of the equation:

(2x)/2 = (10)/2

x = 10/2

x = 5

5 is your answer for x.

~

6 0
3 years ago
Read 2 more answers
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