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3 years ago

12

Please help me, i really need help

2 answers:

Mashcka [7]3 years ago

4 0

Answer:

23

Step-by-step explanation:

45

valentina_108 [34]3 years ago

4 0

In miles it is 1.2 and in hours for the first one 1 hour and 4 hours ratio 1:2,1:5.1:9:2:3

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In triangle abc, the sides are ac=bc=8 inches and ab=4. find the angles

Virty [35]

Answer:

$m\angle A=m\angle B=75.5^{\circ},\\ \\m\angle C=29^{\circ}$

Step-by-step explanation:

In triangle ABC the sides AC=BC=8 in and AB=4 in.

Use the cosine rule:

$AB^2=AC^2+BC^2-2\cdot AC\cdot BC\cdot \cos \angle C,\\ \\4^2=8^2+8^2-2\cdot 8\cdot 8\cdot \cos \angle C,\\ \\16=64+64-128\cos \angle C,\\ \\16-64-64=-128\cos \angle C,\\ \\\cos \angle C=\dfrac{112}{128}=\dfrac{7}{8},\\ \\m\angle C\approx 29^{\circ}.$

Since triangle ABC is isosceles, angles A and B have the same measures. Then

$m\angle A=m\angle B=\dfrac{180^{\circ}-29^{\circ}}{2}=75.5^{\circ}.$

5 0

3 years ago

How do i do this on my calculator 72.5 - 70 divided by 3 divided by .5?

Dmitriy789 [7]

You must put 72.5 - 70the result you pnes X / 3and the result you put X .5

5 0

3 years ago

What's is greater 34.653 or 4.653?

Strike441 [17]

The greater one is 34.653
because

34 is greater than 4
so, 34.653>4.653

4 0

4 years ago

Suppose you are saving money to buy a digital video camera that costs $340. You have already saved $120 and plan to save $20 eac

Svetradugi [14.3K]

Answer:

11 weeks

Step-by-step explanation:

340 - 120 = 220

220/20=11

6 0

3 years ago

Help please :)))))))))))))))))))))))))))))))))))))))))))))))))))))))))))

Sphinxa [80]

Answer:

c

Step-by-step explanation:

you do 520 divided by two hours

5 0

3 years ago

Read 2 more answers