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melomori [17]
3 years ago
12

Judy thought of a number, subtracted 11 from it, divided the result by 8 and then added seven to it and got an answer of 10. Wha

t is Judy's number?
Mathematics
1 answer:
scZoUnD [109]3 years ago
6 0
10+7=17
17 * 8=136
136+ 11= 147
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Write sin81 in terms of cosine
strojnjashka [21]

Answer:

Since 81° is less than 90, we can express this in terms of a cofunction. sin(θ) = cos(90 - θ) sin(81) = cos(90 - 81) sin(81) = cos(9)

Step-by-step explanation:

7 0
3 years ago
The solution of this equation has an error. Which of the following steps has the error? 18 − (3x + 5) = 8
Margarita [4]

Answer:

Step 1

Because the number in front of the bracket is 1 and it is also affected by the negative sign(-),5 is supposed to be negative not positive because (negative by positive is negative)

And since the first step has an error in it,the remaining steps would also be wrong.

3 0
3 years ago
1/8x=-5 solve the equation
amm1812
To solve 1/8x = -5 , you will need to multiply both sides of the equation by 8. once you do that you will get the answer:
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4 0
4 years ago
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Definition:A sailboat set a course of N 25° E from a small port along a shoreline that runs north and south. Sometime later the
kicyunya [14]

Answer:

S 75°E

S 55°E

Step-by-step explanation:

Take the law if sines of a triangle:

\frac{a}{sinA} = \frac{b}{sinB} = \frac{c}{sinC}

Where,

a = 28 miles

B = 25°

b = 12 miles

First solve for A, using the law of sines:

\frac{a}{sinA} = \frac{b}{sinB}

\frac{28}{sinA} = \frac{12}{sin25}

Cross multiply:

28 sin25 = 12 sinA

11.83 = 12 sinA

Sin A = \frac{11.83}{12}

Sin A = 0.986

A = sin^-^1(0.986)

A = 80.44 degrees

Since A = 80.44° find A supplement, A`:

A` = 180 - 80.44

A` = 99.56°

If A` + B < 180°, find C.

Thus,

A` + B = 99.56 + 25 = 124.56

We can see that A` + B < 180

Find C:

C = 180 - (80.44+25) = 74.56° ≈ 75°

C` = 180 - (99.56+25) = 55.44° ≈ 55°

Rewrite in bearing form:

S 75°E

S 55°E

5 0
3 years ago
80 is what percent 300 ( please explain)
egoroff_w [7]
It’s about 26.67%... hope this helps!
6 0
3 years ago
Read 2 more answers
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