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4 years ago

4. Which value of x makes the inequality true?

Mathematics

1 answer:

MArishka [77]4 years ago

8 0

0.16

option D

this is the answer

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Subtract 7x-9from 2x^2-11

Solnce55 [7]

Answer:

2X^2 - 7x - 2

Step-by-step explanation:

Subtract 7x-9from 2x^2-11

the 9 will be added to the -11

5 0

3 years ago

Two lighthouses are located 60 miles from one another on a north-south line. If a boat is spotted S 21o E from the northern ligh

jasenka [17]

Answer:

(A)The northern lighthouse is 8.2 miles closer than the southern lighthouse.

Step-by-step explanation:

The triangle attached represents the given problem.

First, let us determine the distance of the Boat from each of the lighthouse.

In Triangle ABC,

∠A+∠B+∠C=180 degrees

21+∠B+16=180

∠B=180-37=143 degrees.

Using Law of Sines

$\frac{a}{Sin A}=\frac{b}{Sin B}\\\frac{a}{Sin 21^0}=\frac{60}{Sin 143^0} \\\text{Cross Multiply}\\a*sin143=60*sin21\\a=60*sin21\div sin143\\a=35.73 miles$

Similarly

$\frac{c}{Sin C}=\frac{b}{Sin B}\\\frac{c}{Sin 16^0}=\frac{60}{Sin 143^0} \\\text{Cross Multiply}\\c*sin143=60*sin16\\c=60*sin16\div sin143\\c=27.48 miles$

Difference in Distance =35.73-27.48=8.25 miles

Therefore, the northern lighthouse is 8.2 miles closer than the southern lighthouse.

8 0

4 years ago

1. Solve for x. 10 18 4 х

mart [117]

Answer:

18/4=x/10

Step-by-step explanation:

7 0

3 years ago

If TU = 6 units, what must be true? SU + UT = RT RT + TU = RS RS + SU = RU TU + US = RS

lana [24]

Answer:

Since RT = 12, TU = 6 and RS = 24, T and U are the midpoints of RS and TS respectively. This means that SU + UT = RT.

4 0

3 years ago

15 − b × d ÷ c for b = 1, c = 6, and d = 18.

nirvana33 [79]

Answer:

This is simple. And, you best not be cheating either.

15 - 1 x 18 / 6

1x18 = 18

18/6 is 3.

15 - 3 = 12

12 is the answer.

Step-by-step explanation:

6 0

4 years ago