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Ilya [14]
3 years ago
15

I don't understand please help

Mathematics
1 answer:
kirill [66]3 years ago
5 0

Answer:2x+30 =90

If the angle is 90° altogether

60=A 30=30

Step-by-step explanation:


2x+30 =90

-30 -30

2x=60

÷2. ÷2

x=30

2*30=60

60+30=90

60=A B=30

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a train travels 304 miles in 4 hours if it continues to travel at the same rate how many miles will it travel in seven and a hal
svlad2 [7]

Answer:

570 miles

Step-by-step explanation:

304/4 is how many miles it travels in each hour and if its 7.5 hours then you multiply that by each mile it takes each hour.

304/4 = 76

76 x 7.5 = 570

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3 years ago
What is 87.65•26.889=
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Answer:

2,356.82085‬

Step-by-step explanation:

87.65*26.889= 2,356.82085

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3 years ago
If x+y=10 and x-y=4 then x2=?
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3 years ago
Identify all solutions for a triangle with A - 38°, b= 10, and a=8. Round to the nearest tenth.
Alex

Answer:

B= 50.35°

C=91.65°

c= 12.77

Step-by-step explanation:

Given:

A = 38°

b= 10 and a=8.

Required:

angles B and C, and sides c.

By  using the rule for law of sines

sin B=b\frac{sinA}{a} = \frac{(10)(0.62)}{8} => 0.77

B= sin^-^1(0.77) => 50.35°

For angle C:

angle C= 180 - A - B => 180 - 38 - 50.35

            =91.65°

For side c:

c=a(\frac{sinC}{sinA} ) => 8(\frac{0.99}{0.62})

c= 12.77

3 0
3 years ago
Read 2 more answers
What is the y-intercept of the quadratic function f(x) = (x – 8)(x + 3)?
german
Y= -24
Y-intercept always have x equaling zero
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