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3 years ago

If i have 71% as a grade and i get 100% on a test and 100% on another test,what will be my final grade?

Mathematics

1 answer:

Vlada [557]3 years ago

5 0

$\frac{71 + 100 + 100}{3}$

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If cos x = sin(20 + x) ° and 0°

Varvara68 [4.7K]

Answer:

x = 35°

Step-by-step explanation:

The question is as following

cos x = sin(20 + x)° and 0° < x < 90° , find X?

==============================================

cos x = sin(20 + x)°

sin and cos are co-functions,

which means that: cos x = cos [90 - (20 + x)]

∴ x = 70 - x

∴ 2x = 70

∴ x = 35°

======================

Note: cos θ = sin ( 90 - θ )

4 0

3 years ago

Explain the steps needed to determine the value of the expression shown below be sure to provide the correct value of the expres

inn [45]

Answer:

-3/2

Step-by-step explanation:

In the picture attached, the complete question is shown.

The expression is:

$\frac{ \frac{1}{2} }{ \frac{-2}{5}} + \frac{-1}{4}$

You can rewrite the first term, expressing the division as a multiplication, that is, inverting the fraction in the denominator, as follows:

$\frac{1}{2} \times \frac{-5}{2}+ \frac{-1}{4}$

$\frac{-5}{4} + \frac{-1}{4}$

The addition of a negative fraction is simply the subtraction by that fraction:

$\frac{-5}{4} - \frac{1}{4}$

$\frac{-5 - 1}{4}$

$\frac{-6}{4}$

Which can be simplified dividing by two both numerator and denominator:

$\frac{-3}{2}$

8 0

3 years ago

S19for 11 + 19 + 27 + 35 +...

MrRissso [65]

8 is the answer because it goes 11 and if you add 8 it becomes 19 add 8 it becomes 27 add 8 35 add 8 43

3 0

3 years ago

Emily bought 51 yards of fabric to make curtains,

OLga [1]

51 x3 is 153 is 153 x 12 is 22032

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2 years ago

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F(x)=2x^2-x+1 find the vertex

Galina-37 [17]

The Answer fam is (1/4,7/8)

5 0

3 years ago