Can some one help me idk what to do

Mathematics

2 answers:

Anna [14]3 years ago

8 0

9/10-(1/5+2/10)=
9/10-(2/10+2/10)=
9/10-4/10=5/10=
1/2

oksian1 [2.3K]3 years ago

7 0

The answer is 1/2. Hope this helps!

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If you're good at trig please help meeeee

ikadub [295]

Answer:

the angle of ABC is 90 and the height of C is6.5

4 0

3 years ago

Pls help I will fail 10th grade

dsp73

Answer:

B) -6

Step-by-step explanation:

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3 years ago

A rectangular storage container with an open top is to have a volume of 10 m3. The length of this base is twice the width. Mater

Gala2k [10]

L = 2 W
B = L x W = 2 W²
Side Area = 2 W H + 2 L H = 2 H ( W + L ) = 6 H W
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W ² = 270 : 60
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Answer: The cost of materials for the cheapest such container is $149.15.

8 0

3 years ago

In △ABC , line AB is extended up to point E and line BC is extended up to D . The measure of some of the angles is given as; ∠BA

Over [174]

Answer:

$\angle ACD = 130 ^\circ$ .

Step-by-step explanation:

$\angle ABC$ and $\angle EBC$ are supplementary angles. Their sum should be $180^\circ$ . $\angle EBC = 120^\circ$ $\implies \angle ABC = 180^\circ - \angle EBC = 180^\circ - 120^\circ = 60^\circ$ .

The sum of the three angles in triangle $\triangle ABC$ : $(\angle ABC + \angle BAC + \angle ACB)$ should be equal to $180^\circ$ .

$\angle ABC = 60^\circ$ and $\angle BAC = 70^\circ$ $\implies \angle ACB = 180^\circ - \angle ABC - \angle ACB = 180^\circ - 70^\circ - 60^\circ = 50^\circ$ .

$\angle ACB$ and $\angle ACD$ form another pair of supplementary angles. Their sum should also be $180^\circ$ . $\angle ACB = 50^\circ$ $\implies \angle ACD = 180^\circ - \angle ACB = 180^\circ - 50^\circ = 130^\circ$ .